CN104015489B - Liquid housing container - Google Patents

Abstract

The present invention provides a liquid storage container capable of reducing the possibility of a film coming off from a container case. The liquid storage container includes: a housing case (130) having a housing opening (132); and a film (133) covering the housing opening (133). 132) is bonded to the container shell (130), forming a liquid storage chamber (137) capable of containing liquid between the film (133) and the container shell (130); and the reinforcing component (212), the The reinforcing member (212) is provided along the surface of the membrane (133) at a position on the opposite side of the membrane (133) to the side of the liquid storage chamber (137) so as to prevent deformation of the membrane (133) toward the opposite side.

Description

liquid container

technical field

The present invention relates to a liquid container for containing liquid supplied to a liquid consuming device.

Background technique

Conventionally, an inkjet printer that performs printing (recording) by ejecting ink (liquid) from a liquid ejecting head onto a target such as paper is known as one type of liquid consuming apparatus. In addition, it has been proposed that in such a printer, in order to continuously and stably supply ink to the liquid ejection head when performing printing that consumes a relatively large amount of ink, the ink is supplied to the liquid ejection head from a liquid container having a relatively large ink storage capacity. structure (for example, Patent Document 1).

Further, in such a liquid storage container, a film is thermally welded (bonded) to an opening of a bottomed box-shaped tank body (container case), and the opening is covered with the film to form a liquid storage chamber for containing ink.

However, when forming a liquid storage chamber capable of containing a relatively large amount of ink, the area of the opening of the tank body increases, and the load applied to the film due to the water level difference of the stored ink increases. Therefore, in the liquid storage container containing a large amount of ink, there is a possibility that the film is deformed or the film falls off from the tank main body.

In addition, such a problem is not limited to the liquid storage container containing the ink supplied to the printer, but is generally common to the liquid storage container containing the liquid supplied to the liquid consuming device.

Patent Document 1: Japanese Patent Document Laid-Open No. 2012-51307.

Contents of the invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a liquid storage container capable of reducing the possibility of the membrane falling off from the container case.

Means for solving the above-mentioned problems and their operational effects are described below.

A liquid storage container that solves the above-mentioned problems includes: a container case that has a case opening; and a film that is bonded to the container case so as to cover the case opening. A liquid storage chamber capable of containing liquid is formed between the storage body case and a reinforcing member, the reinforcement member being located on the opposite side of the membrane to the side of the liquid storage chamber so as to prevent deformation of the membrane toward the opposite side. Set along the surface of the above film.

According to this configuration, even when the membrane is intended to deform toward the side opposite to the liquid storage chamber, the reinforcing member can press the membrane from the outside of the liquid storage chamber, thereby reducing the possibility of the membrane falling off the container case.

Preferably, the liquid storage container further includes a cover covering the opening of the housing via the film.

According to such a configuration, the cover can be used to press the membrane from the outside of the liquid storage chamber, and the reinforcing member can also be used to press the membrane, whereby deformation of the cover can be suppressed.

Preferably, in the liquid storage container, reinforcing ribs extending along opposing surfaces of the membranes are formed on the cover.

According to such a structure, the rigidity of a cover can be improved by forming a reinforcing rib in a cover. That is, deformation of the cover due to the load applied via the film can be suppressed, and the film can also be pressed by the cover.

Preferably, in the above-mentioned liquid storage container, at least a part of the reinforcing rib is formed at a position closer to a gravity direction side than a central position in the gravity direction of the liquid storage chamber.

According to such a configuration, since at least a part of the reinforcing rib is formed on the side in the direction of gravity relative to the central position of the liquid storage chamber, the rigidity of the cover can be increased on the side in the direction of gravity where a large load is likely to be applied. Therefore, deformation of the cover due to the load applied via the film can be further suppressed.

Preferably, in the liquid storage container, the reinforcing member is provided between the film and the lid. According to such a configuration, since the reinforcing member can be covered by the cover, the appearance can be improved compared to the case where the reinforcing member is provided outside the cover.

Preferably, in the liquid storage container, when the film is in the direction of gravity, at least a part of the reinforcement member is provided so that at least a part thereof is located closer to the direction of gravity than the center of the liquid storage chamber in the direction of gravity. s position.

When the liquid storage chamber in the state where the membrane is in the direction of gravity accommodates liquid, a large load is applied to the side of the direction of gravity compared with the side of the liquid storage chamber, so the film is different from the side of the direction of gravity against gravity. Parts on the side in the direction of gravity are also easily deformed. In this regard, according to such a configuration, since the reinforcing member is located on the gravity direction side relative to the central position of the liquid storage chamber, the easily deformable portion of the film can be pressed from the outside while suppressing enlargement of the reinforcing member.

Preferably, in the above-mentioned liquid storage container, a plurality of adhesive ribs to which the film is bonded are formed in the liquid storage chamber of the container case, and the reinforcing member is provided on the side of the adhesive ribs on which the film is bonded. The area where the bonded surfaces face each other.

According to such a configuration, the area of the portion where the housing case and the film are bonded can be increased by forming the bonding rib. That is, the bonding state between the container case and the film can be made more stable. Furthermore, since the reinforcing member presses the film at the position where the bonding rib and the film are bonded, the possibility of the film coming off from the bonding rib can be reduced.

Preferably, in the liquid storage container, the liquid storage chamber further includes: a first liquid storage chamber in which an injection port into which a liquid can be injected is formed; and a second liquid storage chamber in which the second liquid The storage chamber is separated from the first liquid storage chamber by a partition wall, and at least a part of the reinforcement member is provided at a position opposite to the first liquid storage chamber side of the membrane.

In a liquid storage container capable of injecting liquid, the force when injecting the liquid from the injection port is also applied to the membrane, and a larger load tends to be applied to the membrane constituting the first liquid storage chamber. In this regard, according to such a structure, by dividing the liquid storage chamber into the first liquid storage chamber and the second liquid storage chamber, and providing at least a part of the reinforcement member on the side of the first liquid storage chamber where the injection port is formed, it is possible to press the A membrane constituting the first liquid holding chamber.

Preferably, in the above-mentioned liquid storage container, the area of the portion where the film is bonded at the lower end portion on the gravity direction side of the opening of the housing is larger than the middle portion between the upper end portion on the anti-gravity direction side and the lower end portion. The portion where the film is bonded has a large area, and at least a part of the reinforcing member is provided at a position opposite to the middle portion side of the film.

With regard to the film and the container case, the smaller the area of the bonded part, the easier it is for the part to come off. In this regard, according to such a configuration, the reinforcing member presses the film at the middle portion where the area of the bonded portion of the film and the housing case is small. Thus, the possibility of film detachment can be reduced.

Description of drawings

FIG. 1 is a perspective view of a printer to which a liquid container according to a first embodiment is fixed;

Fig. 2 is a perspective view showing a state where the liquid storage container is fitted to the fitting portion;

Fig. 3 is a perspective view showing the liquid container in a state where the slider is separated;

Fig. 4 is an exploded perspective view showing the configuration of a connection portion of the liquid storage container;

5 is a cross-sectional view showing the configuration of a connection portion of a liquid storage container;

6( a ) is an exploded perspective view showing the configuration of the slider, and FIG. 6( b ) is a perspective view showing the rear side of the slider;

7( a ) is an exploded perspective view showing the configuration of the chip holder, and FIG. 7( b ) is a perspective view of the chip holder on which the recording chip is placed;

FIG. 8( a ) is a perspective view showing the structure of the opening and closing cover, FIG. 8( b ) is a cross-sectional view showing the state where the opening and closing cover is attached to the slider, and FIG. 8( c ) is a diagram showing engagement. Partial enlarged view of the composition of the department;

9( a ) and ( b ) are diagrams showing the liquid storage container in a state where the opening and closing cover is located at the cover opening position, and FIG. 9( a ) is a perspective view showing a state where the injection port is covered with a cover, (b) of FIG. 9 is a perspective view showing a state in which the cover is removed from the injection port;

Figure 10 is a top view of the liquid container;

Fig. 11 is a diagram showing a cross-sectional structure of a liquid container, which is a cross-sectional view taken along the line AA in Fig. 10;

(a) and (b) of FIG. 12 are diagrams showing a cross-sectional structure of a liquid container, (a) of FIG. 12 is a cross-sectional view taken along the line BB in FIG. The cross-sectional view of the CC line in 10;

Fig. 13 is an exploded perspective view of the liquid container;

Fig. 14 is a side view of the container shell with the film bonded;

Fig. 15 is an enlarged view of part D in Fig. 11;

Fig. 16 is an enlarged view of a container case with a film bonded thereto;

Fig. 17 is an enlarged view of a container case to which a film is bonded;

Fig. 18 is a partial sectional view of the container housing;

Fig. 19 is a partial sectional view of the container housing;

(a) of FIG. 20 is a sectional view taken along the EE line in FIG. 19, and (b) of FIG. 20 is a sectional view taken along the FF line in FIG. 19;

Figure 21 is a bottom view of the container housing;

Fig. 22 is an exploded perspective view showing a part of the container case and each constituent part of the float valve;

Fig. 23 is an explanatory diagram of the action of the slider in the liquid container fitted to the holder;

(a) of FIG. 24 is a perspective view showing the chip holder and the communication part before engagement, and (b) of FIG. 24 is a side view showing the engaged state of the chip holder and the communication part in a partial cross section. FIG. 24 (c) is a side view showing the engaged chip holder and communication part;

25 is a perspective view showing the positional relationship between the liquid storage container and the liquid storage source when ink is injected;

26 is a partial sectional side view showing the positional relationship between the liquid storage container and the liquid storage source when ink is injected;

FIG. 27 is a plan view showing the range of rotation around the fixing portion of the covering member of the liquid storage container;

28 is a partial cross-sectional view showing the state of the float valve when the remaining amount of ink is close to the threshold remaining amount;

29 is a partial cross-sectional view showing the state of the float valve when the remaining amount of ink is less than the threshold remaining amount;

Fig. 30 is a side view of the liquid storage container of the second embodiment;

Fig. 31 is a sectional view taken along line G-G in Fig. 30;

FIG. 32 is a partial side view of a film-bonded containment body shell and reinforcement member;

Fig. 33 is a cross-sectional view of the float valve of the first modified example;

34 is a cross-sectional view of a float valve in which a float member is located above a second modified example;

Figure 35 is a sectional view of the float valve with the float member lowered from the upper position;

Fig. 36 is a cross-sectional view of a float valve of a third modified example;

Fig. 37 is a perspective view of a container case to which a film is bonded according to a fourth modification and a fifth modification;

Fig. 38 is a bottom view of a container case of a sixth modification;

Figure 39 is a cross-sectional view taken along the line H-H in Figure 38;

40 is a partial side view showing the vicinity of an injection port of a liquid injection source according to a seventh modification;

41 is a partial side view showing the vicinity of an injection port of a liquid injection source according to an eighth modification;

42 is a partial side view showing the vicinity of an injection port of a liquid injection source according to a ninth modified example;

43 is a partial side view showing the vicinity of an injection port of a liquid injection source according to a tenth modification;

44 is a perspective view showing a liquid injection source and a liquid containing body container according to an eleventh modification;

45 is a partial perspective view showing the vicinity of an injection port of a liquid injection source according to a twelfth modification.

detailed description

(first embodiment)

Hereinafter, a first embodiment of an inkjet printer (hereinafter also referred to as “printer”) as an example of a liquid container and a liquid consuming device that consumes liquid supplied from the liquid container will be described with reference to the drawings.

As shown in FIG. 1 , a printer 11 according to this embodiment includes a leg portion 13 to which a wheel 12 is attached at a lower end, and a substantially rectangular parallelepiped device body 14 assembled to the leg portion 13 . In addition, in the present embodiment, the direction along the gravitational direction is defined as the vertical direction Z, and the longitudinal direction of the device main body 14 intersecting (orthogonal in the present embodiment) with the vertical direction Z is defined as the horizontal direction X. . In addition, a direction intersecting (orthogonal in the present embodiment) both the up-down direction Z and the left-right direction is referred to as the front-rear direction Y.

As shown in FIG. 1 , a supply unit 15 protruding upward is provided at the rear of the device main body 14 . In the supply unit 15 , a roll paper R that is loaded with a paper S that is a long medium is wound and stacked in a cylindrical shape. In the frame portion 16 constituting the outer package of the apparatus main body 14 , an insertion opening 17 for introducing the paper S delivered from the supply unit 15 is formed at a position on the front side of the supply unit 15 . Inside the frame part 16.

On the other hand, a discharge port 18 for discharging the paper S to the outside of the housing portion 16 is formed on the front side of the apparatus main body 14 . A medium transport mechanism (not shown) is accommodated in the frame portion 16. The medium transport mechanism transports the medium sheet S from the insertion port 17 side to the discharge port 18 side. The paper S is transported from the supply unit 15 by the transport mechanism supply. Further, on the front side of the apparatus main body 14 , a medium receiving unit 19 for receiving the paper S discharged from the discharge port 18 is provided at a position below the discharge port 18 .

In addition, an operation panel 20 for performing setting operations or input operations is provided on an upper portion of the device main body 14 at one end side (right end side in FIG. 1 ) outside the transport path of the paper S in the left-right direction X. Further, a liquid storage container 21 capable of containing ink as an example of liquid is fixed to the lower part of the device main body 14 at one end side (the right end side in FIG.

A plurality of (four in this embodiment) liquid storage containers 21 are provided according to the type or color of the ink. Furthermore, the liquid storage unit 22 is constituted by arranging a plurality of liquid storage containers 21 aligned in the left-right direction X. As shown in FIG. In addition, the liquid storage unit 22 has a portion exposed to the front side (outward side) of the device main body 14 in a state where the liquid storage containers 21 are fixed to the device main body 14 . In addition, both sides in the left-right direction X and the bottom in the vertical direction Z of the exposed portion of the liquid storage unit 22 are covered by a frame member 23 having a substantially U-shaped cross section fixed to the device main body 14 side.

In addition, a carriage 25 on which the liquid ejection head 24 is mounted is housed in the housing portion 16 in a state capable of reciprocating in the left-right direction X that is the main scanning direction. A liquid supply mechanism (not shown) for supplying the ink contained in the liquid container 21 to the liquid ejection head 24 is housed in the housing portion 16 . Then, recording (printing) is performed by ejecting ink droplets from the liquid ejection head 24 onto the paper S conveyed by the medium conveyance mechanism, and the ink in the liquid container 21 is consumed by such ink droplet ejection.

Next, the mounting part 31 which mounts the liquid containing container 21 in a fixed state with respect to the device main body 14 and the liquid storage container 21 which is fixed to the device main body via the mounting part 31 will be described. 14. In FIG. 2 , in order to avoid complicating the drawing, only a part of the liquid supply mechanism that supplies ink from each liquid storage container 21 to the liquid ejection head 24 side, that is, the supply unit 32 is shown, and the two-dot chain line The liquid storage container 21 corresponding to the illustrated one supply unit 32 is shown in a state before being mounted on the mounting unit 31 as indicated by a blank arrow. In addition, in FIG. 3, the liquid storage body 33 which comprises the liquid storage container 21, and the slider 34 which is an example of a sub-holding member are shown in the separated state.

As shown in FIG. 2, an assembly part 31 is provided on the printer 11, and the assembly part 31 has an upper frame 35 and a lower frame 36, and the upper frame 35 and the lower frame 36 are spaced apart in the vertical direction (vertical direction Z). They are arranged at predetermined intervals. In addition, a supply unit 32 that is a part of the liquid supply mechanism is attached to the mounting portion 31 corresponding to each liquid storage container 21 . In addition, in FIG. 2, the upper frame 35 is shown in the state which cut away partly in the left-right direction X. As shown in FIG.

The liquid storage container 21 is fixed so as not to move relative to the printer 11 in a state where one end side in the longitudinal direction (the right end side in FIG. 2 ) is located in the mounting portion 31 . In a state fixed to the printer 11 , the ink contained in the liquid containers 21 is supplied to the liquid jet head 24 side by the supply unit 32 attached corresponding to one end of the liquid containers 21 of the mount 31 . Therefore, in the present embodiment, the state in which the liquid container 21 is mounted on the mounting portion 31 of the printer 11 and fixed so as to be immovable with respect to the printer 11 becomes the posture state of the liquid container 21 in use.

Then, as shown in FIGS. 2 and 3 , the liquid container 21 of the present embodiment includes: a liquid container 33 containing ink; The upper side in the anti-gravity direction in the vertical direction of the storage body 33 is stacked and arranged.

The liquid container 33 is formed such that the direction perpendicular to the longitudinal direction of the device main body 14 in the substantially horizontal direction is defined as the longitudinal direction (front-rear direction Y), and the short direction perpendicular to the longitudinal direction in the substantially horizontal direction is formed. A rectangular parallelepiped that has a certain width in the side direction (left-right direction X) and is approximately L-shaped when viewed from the side. That is, the liquid container 33 includes: a first container portion 37 whose side shape is approximately square as viewed from its short side direction (left-right direction X); The second accommodating body part 38 is long and approximately rectangular. Further, on the upper surface 39 of the liquid container 33 , flat surfaces 41 and 42 extending continuously in the longitudinal direction (front and rear direction Y) without steps are formed at both ends in the short direction, and the slider 34 can move along the flat surface. The faces 41, 42 slide. On the other hand, the lower surface 40 of the liquid container 33 is formed in a shape in which the first container part 37 is lower than the second container part 38 in the longitudinal direction (front-rear direction Y).

Furthermore, in the present embodiment, the fixed portion 37a (see FIG. 13 , FIG. 14 , and FIG. 20 ) provided on the lower surface of the first housing portion 37 is screwed to the device by using the screw 37b (see FIG. 20 ). The liquid storage container 21 is configured so as to be immovable with respect to the printer 11 at a fixing portion (not shown) on the side of the device main body 14 . Moreover, the liquid container 33 fixed by screwing forms the second part of the second container part 38 located almost entirely in the device main body 14 of the printer 11, and on the other hand, is located in the printer 11 by the first container part 37. The first part exposed toward the front of the device main body 14 is formed outside the device main body 14 .

In addition, the second housing part 38 is provided with a connection part 43 on the rear end side opposite to the side of the first housing part 37 in the longitudinal direction thereof. (Accommodating body case 130 shown in FIG. 13 ) is formed from a different member, and is attached to the second accommodating body portion 38 so as to be relatively movable with respect to the second accommodating body portion 38 . The connection portion 43 is formed with an ink flow path that guides the ink contained in the liquid container 33 to the ink supply needle 44 included in the supply portion 32 attached to the mounting portion 31 side, and a transfer mechanism. The transmission mechanism transmits the presence or absence of ink in the liquid container 33 to the remaining ink level detection stick 45 included in the supply unit 32 .

Here, the structure of the connection portion 43 in which the ink flow path and the transfer mechanism are formed will be described with reference to FIGS. 4 and 5 . In addition, in FIG. 4 and FIG. 5 , among the components of the supply unit 32 , the components related to the supply needle 44 and the remaining amount detection rod 45 are illustrated, and other components are omitted as appropriate.

As shown in FIGS. 4 and 5 , the connecting portion 43 included in the second containing body portion 38 has a box-like frame body with a bottom that is open on one side, and the bottom wall thereof constitutes the second containing body portion of the liquid containing body 33 . 38 near the end surface 46 of the supply part 32 side. Further, a needle insertion hole 47 into which the supply needle 44 of the supply unit 32 is inserted is formed on the end surface 46 of the connection portion 43, and a rod into which the remaining amount detection rod 45 is inserted is formed at a position adjacent to the needle insertion hole 47. Insert hole 48 . In addition, on the lower surface side of the connecting portion 43 , a protruding portion 49 having a substantially cylindrical surface is formed.

A substantially flat plate-shaped attached member 50 formed to have a predetermined thickness in a direction in which the supply needle 44 is inserted into the needle insertion hole 47 is provided in the frame of the connection portion 43 . In this attached member 50, an approximately cylindrical outflow port 52 into which the supply needle 44 is inserted through the needle insertion hole 47 is formed on an end surface 51 on the supply portion 32 side in the thickness direction thereof; Cylindrical liquid chamber 53 . Furthermore, as indicated by thick solid line arrows in FIG. 5 , an outflow channel 55 that communicates the liquid chamber 53 and the outflow port 52 is formed through the attached member 50 .

An on-off valve 59 composed of a spring 56 , a valve member 57 and a gasket 58 is installed in the outflow port 52 to suppress the ink supplied from the liquid container 33 side from flowing out by inserting the supply needle 44 through the needle insertion hole 47 . In addition, a seal 60 covering the outlet 52 is provided in a welded manner so that ink does not flow out until the supply needle 44 is inserted.

In addition, a flexible film 61 is welded to the liquid chamber 53 so as to cover the opening of the liquid chamber 53 . Therefore, the volume of the liquid chamber 53 changes as the thin film 61 deforms as the internal pressure changes. In addition, a spring 62 that urges the film 61 to the outside of the liquid chamber 53 is provided in the liquid chamber 53 . Furthermore, a pressure receiving plate 63 that transmits the biasing force of the spring 62 to the membrane 61 is interposed between the spring 62 and the membrane 61 .

In addition, a moving member 64 is attached to the outer surface of the liquid chamber 53 in the attached member 50 . The moving member 64 is configured to be rotatable around a predetermined rotation fulcrum extending in a horizontal direction (left-right direction X) perpendicular to the longitudinal direction (front-back direction Y) of the liquid container 33 , and moves from the outside of the liquid chamber 53 . It is in contact with the thin film 61 constituting a part of the inner surface of the liquid chamber 53 .

On the other hand, on the other end surface 50 a in the thickness direction of the attached member 50 , a substantially cylindrical inlet 65 is protrudingly formed along the thickness direction of the attached member 50 . Corresponding to the inflow port 65 , a substantially cylindrical outlet port (outlet port portion) 69 into which the inflow port 65 is inserted is provided on the liquid container 33 (second container portion 38 ) side. By inserting the inflow port 65 into the outlet port 69 , the inside of the liquid container 33 (second container portion 38 ) communicates with the liquid chamber 53 . In addition, a gasket 70 for suppressing the ink contained in the liquid container 33 from leaking and flowing out is installed in the outlet 69, and a seal 71 covering the opening of the outlet 69 is provided in a welding manner so that Ink does not flow out from the liquid container 33 until the inflow port 65 is inserted into the liquid container 33 (second container portion 38 ).

In addition, the mounted member 50 is urged toward the fitting portion 31 side in the connection portion 43 by the compression spring 72 inserted between the mounted member 50 and the liquid container 33 (second container portion 38 ), so that, for example, The insertion of the supply needle 44 into the outflow port 52 and the contact with the remaining amount detection rod 45 of the moving member 64 are stable.

Here, the transmission mechanism will be described with reference to FIG. 5 . As shown in FIG. 5 , in the connection portion 43 , the thin film 61 of the liquid chamber 53 is pressed by the spring 62 via the pressure receiving plate 63 so that the volume of the liquid chamber 53 increases. Therefore, the ink in the liquid container 33 flows into the liquid chamber 53 through the inflow port 65 as the volume of the liquid chamber 53 increases. On the other hand, the ink in the liquid chamber 53 flows out from the liquid chamber 53 through the outflow channel 55 when the ink is sucked from the outlet 52 to the supply needle 44 by the supply unit 32 . At this time, in this embodiment, since the inner diameter of the outflow channel 55 is set larger than the inner diameter of the inflow port 65, the outflow amount of the ink flowing out from the liquid chamber 53 cannot catch up with the inflow amount of the ink flowing into the liquid chamber 53. , so that the inside of the liquid chamber 53 becomes a negative pressure. Therefore, the film 61 deforms so as to be drawn into the liquid chamber 53 against the urging force of the spring 62 . In addition, FIG. 5 illustrates a state where the film 61 is drawn into the liquid chamber 53 .

The negative pressure generated in the liquid chamber 53 is gradually eliminated by the ink in the liquid container 33 flowing into the liquid chamber 53 through the inflow port 65 . Then, with the force of the spring 62, the film 61 is pushed to the outside of the liquid chamber 53 again, and the volume of the liquid chamber 53 is restored. Therefore, after a predetermined time elapses after the supply unit 32 stops supplying ink to the liquid ejection head 24 , the initial state before the ink supply to the liquid ejection head 24 starts is restored. In addition, when the ink is supplied from the supply unit 32 to the liquid jet head 24 side again, the inside of the liquid chamber 53 becomes a negative pressure, and the film 61 is drawn into the liquid chamber 53 . On the other hand, when the ink in the liquid container 33 is consumed, the ink does not flow into the liquid chamber 53 even if the pressure in the liquid chamber 53 is negative. That is, even after a predetermined time elapses after the supply of ink by the free supply unit 32 stops, the negative pressure in the liquid chamber 53 is not eliminated, and the state in which the film 61 is drawn into the liquid chamber 53 is maintained.

A spring (not shown) that biases the remaining amount detection rod 45 so that the remaining amount detection rod 45 is pressed against the moving member 64 is attached to the remaining amount detection rod 45 . In addition, the other end portion 45b of the remaining amount detection rod 45 on the opposite side to the one end portion 45a in contact with the moving member 64 is a detection target portion to be detected by the concave sensor 68 . The sensor 68 is a transmissive optical sensor, and is provided to face a light receiving unit and a light emitting unit (not shown). The presence or absence of ink in the liquid container 33 is detected by a detection signal output from the sensor 68 .

That is, when the ink in the liquid container 33 is empty, the ink does not flow from the liquid container 33 into the liquid chamber 53 , so the film 61 remains deformed in a direction to reduce the volume of the liquid chamber 53 . Therefore, when the moving member 64 is pressed by the end portion 45a of the remaining amount detecting rod 45 biased by a spring (not shown), the moving member 64 rotates around the pivot point, and the remaining amount detecting rod 45 moves toward the liquid container 33 side. Thus, the other end portion 45b of the remaining amount detection rod 45 is inserted between the light emitting portion and the light receiving portion of the sensor 68 . Therefore, the sensor 68 detects that the ink in the liquid container 33 has disappeared based on the fact that the light is maintained in the blocked state.

Next, returning to FIG. 2 and FIG. 3 , the slider 34 will be described. As shown in FIG. 3 , at the first position outside the printer 11 in the liquid container 33 , an injection port (injection port) 73 for injecting ink into the liquid container 33 is provided on the upper surface 39 of the liquid container 33 . . In this embodiment, the first housing portion 37 corresponds to the first portion, and the injection port 73 is provided in the first housing portion 37 . Furthermore, it is configured to be able to be covered by the slider 34 so that the injection port 73 located outside the printer 11 is not exposed except when ink is injected.

That is, the slider 34 is formed in a substantially rectangular shape in the longitudinal direction, and is formed in an outer shape substantially overlapping the upper surface 39 of the liquid container 33 . Moreover, when the slider 34 is arranged in a state of being substantially overlapped with the upper surface 39 of the liquid container 33 by inserting one end thereof into the fitting portion 31 , the liquid is covered by the openable and closable cover 74 . Above the ink injection port 73 of the container body 33 . Specifically, the slider 34 is provided with an open-close cover 74 at an end in the longitudinal direction thereof, and the open-close cover 74 is displaced between a position covering the filling port 73 and a position opening the filling port 73 . In addition, in the following description, in the case of an "insertion direction", it means the "insertion direction" of the slider 34 with respect to the mounting part 31 unless otherwise specified.

In the present embodiment, the opening and closing cover 74 is positioned closer to the second storage body portion 38 (second portion) side than the injection port 73 in the state of covering the injection port 73 so as to move along the liquid storage body 33 . The axis extending in the short-side direction is rotatably supported by the slider 34 so that the axis of rotation is used as the center of rotation. Therefore, as shown by the two-dot chain line in FIG. And the opening and closing cover 74 is turned about 180 degrees toward the side of the printer 11 which is the side of the second housing portion 38 .

As a result, by making the opening and closing cover 74 change from the covered state of the injection port 73 shown by the solid line in FIG. 3 to the open state of the injection port 73 shown by the two-dot chain line in FIG. The cover 74 is displaced so as to be located on the rear side with respect to the injection port 73 . In addition, in the present embodiment, since the injection port 73 is provided near the front end of the first container portion 37 of the liquid container 33 , the opening and closing cover 74 needs to cover the injection port 73 in the front-rear direction Y. The long sides don't get too long.

In addition, a chip holder 76 as an example of a recording unit holding member capable of mounting a recording chip 75 as an example of a storage unit on the end 34a of the slider 34 in the insertion direction of the mounting unit 31 is attached. On the recording chip 75 , relational information on the ink injected from the injection port 73 into the liquid container 33 is recorded. Moreover, when the slider 34 is inserted into the mounting portion 31 in a state overlapping the upper surface 39 of the liquid container 33 , the recording chip 75 mounted on the chip holder 76 can be placed on the mounting portion 31 of the printer 11 . The communication part 77 on the side is engaged. By engaging with the communication unit 77 , the recording chip 75 mounted on the chip holder 76 contacts and is electrically connected to the electrical terminal 78 included in the communication unit 77 . As a result, the relationship information recorded by the recording chip 75 is transferred to the printer 11 side.

In addition, in the printer 11 of the present embodiment, when inserted into the mounting portion 31 of the printer 11 while overlapping the upper surface 39 of the liquid container 33 , the slider 34 is attached to the mounting portion together with the connecting portion 43 A pair of leaf springs 79 of 31 are positioned within printer 11 .

That is, as shown in FIG. 2 , in the vertical direction, leaf springs 79 are fixed to the upper frame 35 and the lower frame 36 by screws, and the leaf springs 79 each have an inclined shape whose interval becomes narrower toward the insertion direction. Furthermore, the leaf spring 79 of the upper frame 35 is in contact with the protruding part 80 provided on the chip holder 76 provided on the slider 74 in a biased state. The protruding portion 49 (see FIG. 5 ) of 43 abuts in a biased state. As a result, the slider 34 (chip holder 76 ) and the connecting portion 43 are positioned in the up-down direction Z by the pair of leaf springs 79 .

In addition, both the slider 34 inserted while overlapping the liquid container 33 and the second container portion 38 of the liquid container 33 are positioned in the mounting portion 31 . That is, as shown in FIG. 2 , guide grooves (not shown) are provided on the lower surface of the upper frame 35 of the mounting portion 31 , and the convex portion 82 extending along the longitudinal direction on the upper surface side of the slider 34 is aligned with the upper surface of the slider 34 . This guide groove is inserted into the fitting portion 31 while being in sliding contact. In addition, a guide groove 84 is provided on the upper surface of the lower frame 36 of the mounting part 31, and the protruding part 83 (see FIGS. The slot 84 is engaged. Therefore, the slider 34 and the second housing portion 38 are respectively positioned in the short-side direction by the engagement of the respective protrusions with the guide grooves. As a result, the slider 34 (and the chip holder 76 attached to the slider 34 ) and the connecting portion 43 included in the second housing portion 38 are respectively positioned in the short-side direction.

Then, in the liquid storage container 21 of the present embodiment, the chip holder 76 and the opening and closing cover 74 included in the slider 34 are detachably attached to the slider 34 . Furthermore, the slider 34 is slidable with respect to the upper surface 39 of the liquid container 33 in a state where the chip holder 76 and the opening and closing cover 74 are attached. In other words, when the liquid container 33 is fixed to the printer 11 , the slider 34 can be inserted and removed from the mounting portion 31 .

Furthermore, the structure of the slider 34 is demonstrated with reference to FIG.6(a) and FIG.6(b).

As shown in FIG. 6( a ), a holder mounting portion 86 is formed at the end 34 a of the slider 34 on the rear side in the insertion direction of the fitting portion 31 . The approximately U-shaped opening 85. Insertion and extraction of the chip holder 76 with respect to the opening 85 can be performed in a direction intersecting the insertion direction of the slider 34 , that is, the sliding direction. In the present embodiment, the flange-shaped portion 87 provided on the upper side of the chip holder 76 and the opening 85 forming the holder mounting portion 86 are formed from above the slider 34 on the opposite side to the liquid container 33 . The chip holder 76 is inserted into the opening 85 so as to abut against the approximately C-shaped upper surface 88 of the chip holder 76 . In addition, the chip holder 76 is pulled upward from the holder mounting portion 86 to be pulled out from the slider 34 .

On the other hand, a rotating shaft 89 is formed at the end portion 34b of the slider 34 on the front side in the insertion direction of the fitting portion 31, and a bearing portion 90 formed on the opening and closing cover 74 is fitted into the rotating shaft 89 to open and close the cover. 74 is attached to the slider 34 in a rotatable (swing) manner.

The slider 34 of the present embodiment, to which the chip holder 76 and the opening and closing cover 74 are attached in this way, is in a state of being overlapped with the liquid container 33 , and the upper surface 39 of the liquid container 33 and the short side direction of the liquid container 33 are separated. (left-right direction X), that is, both end portions in the short-side direction abut against each other, and are slidable in the long-side direction (front-back direction Y) of the liquid container 33 .

Specifically, as shown in FIG. 6( b ), on the lower surface side of the slider 34 overlapping the upper surface 39 of the liquid container 33 , there are formed on both sides in the width direction intersecting the longitudinal direction. Linear rib-shaped side wall portions 91 and 92 extending in the longitudinal direction. On the other hand, on both ends of the upper surface 39 of the liquid container 33 in the short direction intersecting with the long direction, there are formed abutment surfaces along the longitudinal direction that are abutting surfaces for the side wall parts 91 and 92 respectively. Extended linear flat surfaces 41 , 42 . Therefore, the side wall portions 91 , 92 formed on the slider 34 can move (slide) in the longitudinal direction while abutting on the flat surface portions 41 , 42 formed on the upper surface 39 of the liquid container 33 , respectively.

That is, as shown in FIGS. 2 and 3 , a plurality of protrusions 93 are formed on the upper surface 39 of the liquid container 33 along the longitudinal direction and adjacent to the inside of the flat surfaces 41 and 42 . Therefore, movement of the slider 34 in the short-side direction (left-right direction X) is restricted by the plurality of protrusions 93, whereby the slider 34 moves stably in the long-side direction (front-back direction Y) relative to the liquid container 33 ( slide).

However, in the printer 11 of the present embodiment, a slide handle 94 is provided on the upper side of the liquid container 21 fixed to the printer 11 in a state where the second container portion 38 is located in the fitting portion 31 . It is provided so as to be able to slide and move in the up and down direction. By displacing the slide knob 94 provided on the printer 11 from above to below and engaging with the concave portion 95 provided on the upper surface of the slider 34, the slider 34 is regulated in the direction of pulling out from the mounting portion 31 in the longitudinal direction. Move (swipe). Therefore, when the user moves the slide handle 94 upward from the bottom, the engagement between the slide handle 94 and the concave portion 95 is released, and the slider 34 is in a detachable state from the mounting portion 31 . Furthermore, in this state, the user can insert and remove the slider 34 with respect to the mounting part 31 by sliding the slider 34 with respect to the liquid container 33 . Furthermore, in the present embodiment, the slider 34 has a finger hook portion 96 protruding in the short side direction on the upper surface thereof, and the user can easily insert and remove the block 34 through the finger hook portion 96 .

Furthermore, in this embodiment, the recording chip 75 placed on the chip holder 76 can be placed instead. This configuration will be described with reference to FIG. 7( a ) and FIG. 7( b ). In FIG. 7( a ) and FIG. 7( b ), the chip holder 76 is shown in a state pulled out from the slider 34 .

As shown in (a) of FIG. 7 , the chip holder 76 is constituted by a plurality of walls. The chip holder 76 is provided with a concave portion 97 that is open on both the rear side and the upper side of the insertion direction of the slider 34 of the mounting portion 31 in the state assembled to the slider 34 , and the concave portion 97 is provided with an insertion direction direction. The lower slope 98. A cylindrical boss 99 is formed on the lower end side of the inclined surface 98 , and a plate-shaped rib 100 is formed on the upper end side of the inclined surface 98 with the insertion direction relative to the mounting portion 31 being the longitudinal direction. Any or all of these slopes 98 , cylindrical bosses 99 and ribs 100 are referred to as support portions.

On the other hand, in this embodiment, the recording chip 75 mounted on the chip holder 76 has a substantially rectangular shape, and a plurality of (here, nine) electrodes 75 a are provided on the surface thereof with the insertion direction as the longitudinal direction. Further, in the recording chip 75 , a round hole 101 is formed at one end portion where the insertion direction of the plurality of electrodes 75 a is front and rear, and a slit 102 is formed at the other end portion. Then, the boss 99 provided on the chip holder 76 is inserted into the circular hole 101 formed on the recording chip 75, and along with the insertion, the chip holder is inserted into the chip holder with respect to the slit 102 provided on the recording chip 75. 76 for 100 ribs. As a result, the recording chip 75 is placed on the inclined surface 98 of the chip holder 76 in a state inclined with respect to the horizontal direction. In addition, the chip holder 76 is supported on the recording chip 75 so that the wall of the chip holder 76 protrudes in the direction of gravity from the recording chip 75 regardless of the orientation (arbitrary orientation) of the chip holder 76 placed on the plane. . An identification sticker 104 (identification label) for identifying the mounted recording chip 75 is attached to at least a part of the upper surface 103 of the chip holder 76 according to the present embodiment. The identification sticker 104 is the same color as the liquid contained in the liquid container 21 corresponding to the chip holder 76 or the liquid contained in the liquid injection source 126 described later.

As shown in FIG. 7( b ), when the recording chip 75 is placed on the chip holder 76 , the recording chip 75 is restricted from rotating around the boss 99 within the slope 98 by the rib 100 . In addition, a slight gap is provided between the circular hole 101 and the boss 99 and between the slit 102 and the rib 100 , so that the mounted recording chip 75 can be pulled out from the chip holder 76 .

In addition, although only one side of the chip holder 76 is shown in FIG. 7( a ) and FIG. The side wall portions 105 formed on both sides in the direction X are provided with groove-shaped portions 107 extending in the insertion direction and having chamfered portions 106 formed at the side ends in the insertion direction. In addition, on the upper surface 103 of the chip holder 76 , a protruding portion 80 abutting against the leaf spring 79 provided on the upper frame 35 is formed.

Next, the structure of the open-close cover 74 will be described with reference to FIG. 8( a ), FIG. 8( b ), and FIG. 8( c ). In the present embodiment, the opening and closing cover 74 is detachably attached to the slider 34 , and a load is applied to the rotation around the rotation shaft 89 at the closing position of the injection port 73 . to suppress rotation.

As shown in (a) of FIG. 8 , the opening and closing cover 74 forms two bearing portions 90 and an abutting portion 109 in an approximately semi-cylindrical shape, and the two bearing portions 90 are connected to the rotating shaft 89 provided on the slider 34 . The shaft end portions 108 on both sides of the shaft end portion 109 engage with each other, and the abutting portion 109 abuts against the substantially central portion in the axial direction of the rotating shaft 89 from the direction opposite to the bearing portion 90 . In the opening and closing cover 74, two flexible plate-shaped parts protruding from the inner surface (rear surface 74a) side facing the injection port 73 are provided, which have an approximate J-shape when viewed from the short side direction. At the hook portion 110, an abutting portion 109 is provided at the tip of the hook shape. Furthermore, when the two bearing portions 90 are engaged with the shaft end portion 108 of the rotating shaft 89, after the abutting portion 109 is temporarily displaced by the rotating shaft 89 accompanying the bending displacement of the hook portion 110, the bearing portion 90 is engaged with the shaft end portion 108 of the rotating shaft 89 , the bending displacement is restored, whereby the opening and closing cover 74 is engaged with the rotating shaft 89 in a substantially contact state. Thereby, the opening-closing cover 74 is pivotally supported so as to be rotatable with respect to the rotation shaft 89 .

In addition, extending portions 111 extending in the longitudinal direction are respectively provided on the side wall portions 91 , 92 on both sides in the short direction of the slider 34 . A groove portion 112 is formed in the extending portion 111 along the vertical direction. On the other hand, the cover side wall portions 91a, 92a constituting a part of the side wall portions 91, 92 of the slider 34 in the opening and closing cover 74 cover the injection port 73 with the opening and closing cover 74 attached to the liquid storage body 33. In this state, a protruding line portion 113 capable of locking with the groove portion 112 is formed at a position corresponding to the groove portion 112 .

That is, as shown in (b) and (c) of FIG. The closure 74 is assembled to the slider 34 . When the assembled opening-closing cover 74 is located at the cover-closing position covering the injection port 73, the ribs 113 formed on the cover side walls 91a and 92a overlap the grooves 112 when viewed from the short-side direction and enter the grooves. 112 engaged state. Therefore, when the closing cover 74 is rotated around the rotation shaft 89 and displaced to the opening position of the injection port 73 as shown by the dashed-two dotted line in FIG. rotating load. In this regard, the groove portion 112 of the slider 34 functions as an example of an engaging portion that engages with the opening-closing cover 74 to suppress displacement of the opening-closing cover 74 from the cover-closing position to the cover-opening position.

Next, the peripheral structure of the injection port 73 in the liquid storage container 21 will be described.

As shown in FIG. 9( a ), a liquid receiving surface 116 as an example of a liquid receiving portion extending in a direction intersecting the vertical direction Z is formed on the front portion of the upper surface 39 of the liquid container 33 . The liquid receiving surface 116 is formed in a substantially rectangular shape in plan view, and its width in the left-right direction X is slightly smaller than the width in the left-right direction X of the liquid container 33 .

Further, on the upper surface 39 of the liquid container 33 , a peripheral wall portion 117 protrudes upward (anti-gravity direction) intersecting the liquid receiving surface 116 so as to surround the liquid receiving surface 116 . Further, a notch groove 118 recessed downward relative to other parts of the peripheral wall portion 117 is formed substantially at the center in the left-right direction X of the front wall portion of the peripheral wall portion 117 . That is, in the present embodiment, the notch groove 118 as an example of a concave portion is formed in the peripheral wall portion 117 as an example of a peripheral position of the injection port 73 . On the other hand, a pair of reinforcing ribs 119 intersecting the wall portion on the rear side of the peripheral wall portion 117 and extending rearward are formed.

In addition, a covering member 121 including a covering body 120 formed in a substantially cylindrical shape and capable of covering or opening the injection port 73 (see FIG. 9( b )) is placed on the liquid receiving surface 116 . The cover body 120 is formed with a handle portion 122 formed in a substantially cylindrical shape protruding upward from the upper surface of the cover body 120 . The handle portion 122 is a portion that the user grasps when pulling out the cover 120 from the injection port 73 or conversely covering the injection port 73 with the cover 120 .

In addition, in the state shown in FIG. 9( a ), a fixing portion 123 for fixing the cover member 121 to the liquid receiving surface 116 is provided on the rear side of the cover member 121 opposite to the front side provided with the cover body 120 . . The fixing portion 123 is fixed to a fixing hole 124 (see FIG. 10 ) opened in the liquid receiving surface 116 so as to be rotatable around the axis of the fixing hole 124 and cannot be detached from the liquid receiving surface 116 . Therefore, the cover member 121 can be rotated with respect to the liquid receiving surface 116 around the fixed portion 123 as a rotation center, but it is difficult to pull out from the liquid receiving surface 116 . However, the covering member 121 including the fixing portion 123 can be replaced with a new covering member 121 .

In addition, the cover member 121 is provided with connecting portions 125 that are provided multiple times in the direction intersecting the vertical direction Z (in the horizontal direction X in this embodiment) when the cover member 121 is placed on the liquid receiving surface 116 . 3 times) Bending and connecting the covering body 120 and the fixing part 123 . The cross-sectional shape of the connecting portion 125 in the extending direction is rectangular, and the length along the liquid receiving surface 116 in the rectangular cross-sectional shape is longer than the direction intersecting the liquid receiving surface 116 (vertical direction Z). Therefore, when the connecting portion 125 is placed on the liquid receiving surface 116 , the contact area between the connecting portion 125 and the liquid receiving surface 116 becomes large, and thus is stably placed on the liquid receiving surface 116 .

In addition, since the covering body 120 , the connecting portion 125 , and the fixing portion 123 constituting the covering member 121 are formed of elastic bodies such as rubber or resin, they are elastically deformable. Therefore, in the state shown in FIG. 9( a ), the covering body 120 fits with the injection port 73 in a state of elastic deformation, thereby covering the injection port 73 without a gap between the covering body 120 and the injection port 73 . Entrance 73.

As shown in (a) of FIG. 9 , the cover body 120 pulled out from the injection port 73 can be placed on the back surface 74 a (an example of the bottom surface) of the opening and closing cover 74 at the opening position. Moreover, since the area of the back surface 74a of the openable cover 74 is larger than the projected area when the cover 120 is projected in the vertical direction Z, the cover 120 can be mounted more stably.

Furthermore, the back surface 74 a of the opening and closing cover 74 is a surface inclined downward toward the front where the filling port 73 exists when the opening and closing cover 74 is located at the opening position (the state shown in FIG. 9( a )). In addition, at both side ends of the back surface 74a of the opening and closing cover 74 located in the cover opening position, the cover side wall parts 91a and 92a are in a state facing upward. Therefore, the cover side walls 91a and 92a also serve as shielding parts that prevent the ink from leaking out from the openable cover 74 when the cover body 120 to which ink is attached is placed on the back surface 74a of the openable cover 74 at the open position. One instance functions.

FIG. 9( b ) shows the liquid storage container 21 in a state where the cover 120 is pulled out from the injection port 73 and the cover 120 is placed on the back surface 74 a of the openable cover 74 . As shown in FIG. 9( b ), the injection port 73 formed in part of the liquid receiving surface 116 is exposed through the opening, and the user can inject ink into the liquid container 33 through the injection port 73 (the first ink chamber 151 (Refer to Figure 14)). In addition, the opening edge 73 a serving as the upper end edge of the injection port 73 is chamfered and formed in an inclined shape so that the ink can easily flow into the injection port 73 when the ink is injected.

Also, as shown in FIG. 9( b ), the length of the connecting portion 125 of the cover member 121 is such that only the cover body 120 can be placed on the back surface 74 a of the openable cover 74 in the open position. In the state shown in FIG. 9( b ), the connecting portion 125 is slightly stretched, while the cover body 120 is placed on the back surface 74 a of the opening and closing cover 74 and is in contact with the opening and closing cover 74 . The state where the hook portion 110 is in contact with each other.

As shown in FIG. 10 , in the vicinity of the wall portion on the rear side (the right side in FIG. 10 ) of the peripheral wall portion 117 of the liquid receiving surface 116 , an opening for the covering member 121 is formed in a direction intersecting the liquid receiving surface 116 . The fixing hole 124 into which the fixing part 123 is inserted and fixed is fixed. The fixing hole 124 is provided such that the center position in the left-right direction X of the fixing hole 124 substantially coincides with the center position in the left-right direction X of the injection port 73 . In addition, although the fixing hole 124 is opened in the liquid receiving surface 116 in the same manner as the injection port 73 , it does not communicate with the first ink chamber 151 .

As shown in FIG. 11 , in the front-rear direction Y, the liquid receiving surface 116 is formed to incline downward (gravity direction) as it goes toward the injection port 73 . Therefore, the vicinity of the fixing hole 124 , which is a position separated from the injection port 73 , is the highest position in the liquid receiving surface 116 . That is, since the fixing portion 123 of the covering member 121 fixed to the fixing hole 124 is positioned higher than the periphery of the injection port 73 on the liquid receiving surface 116, when ink is injected into the injection port 73, etc., even if the ink is placed on the liquid receiving surface 116, the ink is also difficult to adhere to the liquid receiving surface 116.

In addition, as shown in FIG. 12( a ), the liquid receiving surface 116 is formed so as to incline downward toward the injection port 73 even in the left-right direction X. Furthermore, as shown in FIG. 12( b ), the liquid receiving surface 116 is formed to incline downward toward the center in the left-right direction X at a position close to the fixing hole 124 separated from the injection port 73 .

Next, the internal structure of the liquid container 33 will be described.

As shown in FIG. 13 , the liquid container 33 includes: a container casing 130, which is approximately L-shaped when viewed from the left and right directions X; a floating valve 131, and the floating valve 131 It is a kind of valve mechanism housed in the container case 130; the film 133 is bonded (for example, thermally welded) to the case opening 132 of the container case 130; and a resin cover 134 , the cover 134 covers the case opening 132 via the film 133 . In addition, the container housing 130 is integrally formed with the right side open, and a locking portion 130 a is formed outside the ring-shaped housing opening 132 , and the locking portion 130 a is locked and formed on the cover 134 . The upper claw 134a.

As shown in FIG. 14, when the film 133 is bonded to the case opening 132 of the container case 130, the space area surrounded by the container case 130 and the film 133 serves as an air chamber 136 communicating with the atmosphere, as a container An ink chamber 137 , which is an example of a liquid storage chamber for ink, and an outlet flow path 138 , which is an example of a liquid flow path, function. In addition, one end of the lead-out flow path 138 communicates with the ink chamber 137, and a lead-out port 69 (see FIG. 4 and FIG. 5 ) is formed on the other end side thereof, and the lead-out port 69 leads to the liquid jet head 24 (the printer 11 side). Ink is contained in the ink chamber 137 .

Next, the air chamber 136 and the configuration for taking air into the air chamber 136 will be described.

As shown in FIG. 10 , an air communication hole 140 communicating with the atmosphere and a positioning protrusion 141 extending in the left-right direction X are formed on the upper surface 39 of the injection port 73 of the container case 130 . Furthermore, at least one (in this embodiment, two) zigzag grooves 142, 143 zigzag formed between the reinforcing rib 119 and the positioning protrusion 141, and zigzag grooves surrounding the zigzag grooves 142, 43 are formed. convex portion 144 .

Moreover, as shown in FIGS. 10 and 15 , an air passage forming film 147 covering the meandering grooves 142 and 143 to form the air passages 145 and 146 is adhered (for example, thermally welded) to the upper surface 39 of the container case 130 . . That is, when the air passage forming film 147 is adhered to the meandering protrusion 144 in a state of being positioned on the reinforcing rib 119 and the positioning protrusion 141, the first air passage 145 is formed by the first meandering groove 142 and the air passage forming film 147. . Also, the second air passage 146 is formed by the second meander groove 143 and the air passage forming film 147 .

As shown in FIGS. 10 and 11 , the atmosphere communication hole 140 communicates with the first air chamber 136a.

In addition, one end 142a of the first meandering groove 142 communicates with the first air chamber 136a, and the other end 142b communicates with the second air chamber 136b. In addition, one end 143a of the second zigzag groove 143 communicates with the second air chamber 136b, and the other end 143b communicates with the third air chamber 136c.

As shown in FIG. 16 , an air inlet 148 is formed in the third air chamber 136c, and the third air chamber 136c communicates with the ink chamber 137 via the air inlet 148 . Therefore, for example, when the ink contained in the ink chamber 137 is led out to lower the pressure in the ink chamber 137, the outside air taken in from the atmosphere communication hole 140 passes through the first air chamber 136a, the first air passage 145, and the second air chamber. 136 b , the second air passage 146 , and the third air chamber 136 c are taken into the ink chamber 137 .

Next, the ink chamber 137 will be described.

As shown in FIG. 14 , the shape of the ink chamber 137 is the same as that of the liquid container 33 , and the height dimension in the vertical direction Z on the front side is larger than the height dimension in the vertical direction Z on the rear side. In addition, the ink chamber 137 is partitioned into a first ink chamber 151 as an example of a first liquid storage chamber and a second ink chamber 152 as an example of a second liquid storage chamber by a partition wall 150 that is connected to the forming ink chamber. The top surface 137b which is an example of the injection port formation surface of the injection port 73 of the chamber 137 intersects.

In addition, the partition wall 150 is provided so as to extend in the up-down direction Z, and also intersects the bottom surface 153 that is opposed to the top surface 137b. In addition, the width of the partition wall 150 in the left-right direction X is approximately equal to the width from the left side wall 130 b of the container case 130 to the case opening 132 . In addition, at a position on the front side of the ink chamber 137 where the height in the vertical direction Z is large, the partition wall 150 is perpendicular to the side wall 130b of the container case 130, and extends from the side wall 130b to the case opening 132. The side (the near side in FIG. 14 ) is integrally formed with the container case 130 so that it protrudes. Therefore, the height of the second ink chamber 152 on the side of the first ink chamber 151 in the vertical direction Z is approximately equal to the height of the first ink chamber 151 in the vertical direction Z, and is greater than the height in the vertical direction away from the rear side of the first ink chamber 151. the height of Z. Also, the volume of the first ink chamber 151 is smaller than the volume of the second ink chamber 152 .

Specifically, as shown in FIG. 11 , the partition wall 150 is formed so as to be substantially in line with the front wall surface 137 a of the first ink chamber 151 with the injection imaginary line M extending in the vertical direction Z through the center of the opening of the injection port 73 as the center. symmetry. That is, the injection port 73 is formed on the top surface 137 b of the first ink chamber 151 on the front side of the partition wall 150 .

In addition, as shown in FIG. 17 , at the position of the bottom surface 153 of the first ink chamber 151 close to the partition wall 150 , the concave portion 154 that is depressed along the direction of gravity in a manner away from the injection port 73 crosses the direction of gravity with the injection port 73 . stagger position setting in the direction of . That is, the concave portion 154 is provided over the left-right direction X at a position shifted from the imaginary injection line M in the front-rear direction Y.

As shown in FIG. 14 and FIG. 17, when the film 133 is bonded to the partition wall 150, the part formed by recessing from the bonding surface 150a toward the side wall 130b side functions as a wall communicating opening (wall communicating opening) 155, and Functioning as a wall ventilation opening (wall ventilation opening portion) 156, the wall communication opening 155 is an example of a communication opening, and the wall ventilation opening 156 is an example of a ventilation opening. That is, the first ink chamber 151 and the second ink chamber 152 communicate through the wall communication opening 155 and the wall ventilation opening 156 . In addition, the wall ventilation opening 156 is formed at the upper end of the partition wall 150 so as to be in contact with the top surface 137b, and is located above the wall communicating opening 155 .

On the other hand, the wall communication opening 155 is located on the bottom surface 153 side below the wall ventilation opening 156 , and is formed at a position separated upward from the recess 154 . Furthermore, in the wall communication opening 155, the lower surface 155a located on the lower side in the wall communication opening 155 is formed approximately perpendicularly and substantially horizontally with respect to the rear surface 155b on the left side. ) upper surface 155c is non-orthogonal with respect to the inner surface 155b. That is, the upper surface 155c inclines in a direction intersecting the horizontal direction, and moves away from the lower surface 155a as it moves away from the back surface 155b. In addition, for the wall communication opening 155, the communication port axis N passing through the center of the opening of the wall communication opening 155 and perpendicular to the cross section of the opening (extending in the front-rear direction Y in this embodiment) and the imaginary injection line M have neither parallel nor parallel. and mutually disjoint relationship. That is, the wall communication opening 155 is formed in a twisted position with respect to the injection port 73 .

Furthermore, the area of the wall communication opening 155 is equivalent to the area of the portion formed by the recess in the partition wall 150 , smaller than the area of the partition wall 150 , and smaller than the area of the injection port 73 . Furthermore, the area of the wall ventilation opening 156 is smaller than the area of the wall communication opening 155 .

In addition, as shown in FIG. 14 , in the second ink chamber 152 , at least one (nine in this embodiment) intersecting rib portions 157 a to 157 i extending in the up-down direction Z intersect with the top surface 137 b in the front-back direction Y. Formed at intervals. In addition, at least one (four in the present embodiment) transverse oblique ribs 158 a to 158 d intersecting the vertical direction Z and the front-rear direction (horizontal direction) Y are formed in the second ink chamber 152 as an example of eaves. In addition, these intersecting ribs 157a to 157i and transverse oblique ribs 158a to 158d are perpendicular to the side wall 130b of the housing body case 130, and extend from the side wall 130b to the side of the case opening 132 (in FIG. The near front side) is integrally formed with the container housing 130 in such a way that it protrudes.

The width of the intersecting ribs 157 a to 157 i in the left-right direction X is approximately equal to the width from the side wall 130 b of the container case 130 to the case opening 132 . In addition, part of the upper ends of the intersecting ribs 157a to 157i in contact with the top surface 137b are recessed toward the side wall 130b. Therefore, when the film 133 is bonded to the bonding surfaces (right end surfaces) of the intersecting ribs 157a to 157i, the recessed portions function as rib ventilation openings (rib ventilation openings) 160 as rib ventilation openings. An example of a ventilation opening. In addition, the rib ventilation opening 160 has a larger area than the wall ventilation opening 156 , and the vertical direction Z of the rib ventilation opening 160 is larger than the vertical direction Z of the wall ventilation opening 156 . That is, the lower opening end of the wall ventilation opening 156 is located closer to the top surface 137 b than the lower opening end of the rib ventilation opening 160 . Therefore, the wall ventilation opening 156 is formed at a position closer to the top surface 137 b than the rib ventilation opening 160 .

A first intersecting rib 157 a closest to the partition wall 150 and a second intersecting rib 157 b closest to the partition wall 150 are formed at a front position where the size in the vertical direction Z is large in the second ink chamber 152 with a gap from the bottom surface 152 a. Therefore, when the film 133 is bonded to the bonding surfaces of the first intersecting rib portion 157a and the second intersecting rib portion 157b, the lower ends of the first intersecting rib portion 157a and the second intersecting rib portion 157b serve as rib communication openings (rib communication openings). The rib communication opening 161 functions as an example of a communication opening through which ink can pass. In addition, the bottom surface 152 a of the second ink chamber 152 is a surface located on the lower side in the vertical direction Z of the second ink chamber 152 , and is partially curved and inclined to match the shape of the second ink chamber 152 . Furthermore, the float valve 131 is accommodated between the first intersecting rib portion 157a, the second intersecting rib portion 157b, and the bottom surface 152a.

The third intersecting rib portion 157c to the ninth intersecting rib portion 157i are formed at the rear of the second ink chamber 152 . In addition, part of the lower ends of the third to ninth intersecting ribs 157c to 157i are recessed toward the side wall 130b. Therefore, when the film 133 is bonded to the bonding surfaces (right end surfaces) of the third to ninth intersecting ribs 157 c to 157 i, the lower ends of the third to ninth intersecting ribs 157 c to 157 i face sideways. The recessed portion on the side of the wall 130 b functions as a rib communication opening 161 which is an example of a communication opening through which ink can pass. That is, the spaces formed by the intersecting rib portions 157 a to 157 i of the second ink chamber 152 communicate with each other through the rib communication opening 161 and the rib ventilation opening 160 formed on the top of the rib communication opening 161 . The position on the side of the surface 137b.

As shown in FIGS. 13 and 14 , the first horizontally inclined rib portion 158 a located at the highest position is formed so as to form a downward slope from the intersection point of the partition wall 150 and the top surface 137 b to the rear. In addition, the second lateral wall located at the second highest position is formed in the partition wall 150 so that it becomes a downward slope that is gentler than the first lateral oblique rib part 158a toward the rear from a position below the first lateral oblique rib part 158a. Diagonal rib portion 158b. That is, the first lateral oblique rib portion 158 a and the second lateral oblique rib portion 158 b are formed to intersect the partition wall 150 and intersect the front-rear direction Y. Moreover, the width of the left-right direction X of the 1st lateral oblique rib part 158a and the 2nd lateral oblique rib part 158b is smaller than the width of the partition wall 150 and the intersecting rib parts 157a-157i. Therefore, when the film 133 is bonded to the case opening 132 , gaps are formed between the first laterally inclined rib portion 158 a and the second laterally inclined rib portion 158 b and the film 133 . Therefore, the spaces defined by the first lateral oblique rib portion 158 a and the second lateral oblique rib portion 158 b communicate with each other via the gap.

In addition, a third lateral oblique rib portion 158c as an example of a first eave portion and a third lateral oblique rib portion 158c as an example of a second eave portion are formed on the bottom surface 152a side of the second lateral oblique rib portion 158b and above the float valve 131. The fourth transverse oblique rib portion 158d. A third lateral oblique rib portion 158c is formed between the partition wall 150 and the first intersecting rib portion 157a, and a fourth lateral oblique rib portion 158d is formed on the rear side of the second intersecting rib portion 157b. Furthermore, the third lateral oblique rib portion 158c and the fourth lateral oblique rib portion 158d are line-symmetric with respect to an axis (not shown) passing through the center of the float valve 131 in the direction of gravity, and are arranged from the center of the float valve 131 to The end portions are each formed so as to become downward slopes. That is, the distance between the upper end of the third oblique rib portion 158c and the upper end of the fourth oblique rib portion 158d is shorter than the distance between the lower end of the third oblique rib portion 158c and the lower end of the fourth oblique rib portion 158d.

In addition, the width in the left-right direction X of the third lateral oblique rib portion 158c and the fourth lateral oblique rib portion 158d is approximately equal to the width of the partition wall 150 . In addition, both ends of the third lateral oblique rib portion 158c and the fourth lateral oblique rib portion 158d are recessed toward the side wall 130b. Therefore, when the film 133 is bonded to the bonding surface (right end surface) of the third lateral oblique rib portion 158c and the fourth lateral oblique rib portion 158d, the portion formed concavely toward the side wall 130b side functions as a rib through which ink can pass. The communication opening 161 functions. Accordingly, the spaces defined by the third lateral oblique rib portion 158 c and the fourth lateral oblique rib portion 158 d communicate with each other via the rib communicating opening 161 .

As shown in FIGS. 17 and 18 , a flow path opening (flow path opening portion) 162 communicating with the lead-out flow path 138 is formed on the bottom surface 152 a of the second ink chamber 152 . That is, the lateral oblique ribs 158 a to 158 d are positioned above the flow path opening 162 and the float valve 131 , and are provided to cover the flow path opening 162 and the float valve 131 from above. In addition, the distance L1 between the flow path opening 162 and the partition wall 150 in the front-rear direction Y is shorter than the distance L2 between the bottom surface 153 and the wall communication opening 155 in the up-down direction Z. In addition, the distance L2 in this embodiment corresponds to the distance between the upper end of the recess 154 formed on the bottom surface 153 and the lower end of the wall communicating opening 155 . That is, the channel opening 162 is formed at a position close to the partition wall 150 on the bottom surface 152 a of the second ink chamber 152 .

Next, the outlet flow path 138 will be described.

As shown in FIG. 14 , the outlet flow path 138 is formed on the lower side of the second ink chamber 152 along the bottom surface 152 a of the second ink chamber 152 . Furthermore, the lead-out flow path 138 has a curved flow path portion 163 that is formed so as to be bent to match the shape of the liquid container 33 , in the direction in which the ink flows (hereinafter referred to as “flow direction”). Make the ink flow while changing. In addition, the outlet flow path 138 has a connecting flow path portion 164 connecting the flow path opening 162 and the curved flow path portion 163 and an inclined flow path portion 165 connecting the curved flow path portion 163 and the curved flow path portion 165. Export 69.

As shown in FIGS. 18 and 19 , the connection channel portion 164 includes a filter 166 having a substantially rectangular shape when viewed from the lower bottom surface. That is, the connection flow path portion 164 is divided by the filter 166 into a first connection flow path portion 164 a on the flow path opening 162 side and a second connection flow path portion 164 b on the float valve 131 side relative to the filter 166 . Furthermore, the connecting flow path portion 164 includes a third connecting flow path portion 164 c located closer to the outlet port 69 than the float valve 131 and connected to the curved flow path portion 163 .

As shown in FIG. 20( a ) and FIG. 20( b ), the cross-sectional area of the curved flow path portion 163 is larger than the cross-sectional area of the third connection flow path portion 164 c. In addition, the width of the outlet channel 138 in the left-right direction X is approximately equal throughout the flow direction. Therefore, the direction perpendicular to the flow direction of the curved flow path portion 163 (the first vertical flow path portion 163a in FIG. The width L3 in the front-rear direction Y) is wider than the width L4 in the direction (vertical direction Z) perpendicular to the flow direction of the third connection channel portion 164 c and perpendicular to the left-right direction X. Furthermore, the cross-sectional area of the inclined flow path portion 165 is approximately equal to the cross-sectional area of the curved flow path portion 163 . Therefore, the width L5 (see FIG. 14 ) in the direction perpendicular to the flow direction of the inclined flow path portion 165 and perpendicular to the left-right direction X is wider than the width L4 of the third connecting flow path portion 164c.

As shown in FIGS. 18 and 21 , on the lower surface 40 on the front side where the height in the vertical direction Z of the container case 130 is large, a substantially rectangular stepped portion 167 that is depressed toward the upper side of the ink chamber 137 side is formed. . In addition, first to third flow path forming recesses 168 a to 168 c are recessed toward the ink chamber 137 side in the step portion 167 . The other end side of the through hole 162a formed as the flow path opening 162 through one end of the bottom surface 152a of the second ink chamber 152 opens to the first flow path forming recess 168a. Furthermore, the first flow path forming recessed portion 168a is formed to have a different height so that the inner side of the substantially rectangular annular convex portion 169 is deeper than the outer side when viewed from the bottom surface of the bonded filter 166 . Furthermore, the flow path convex part 170 is formed in the peripheral edge of the 1st - 3rd flow path forming recessed part 168a-168c. That is, the through hole 162 a and the annular convex portion 169 are surrounded by the channel convex portion 170 .

Therefore, the connecting flow path portion 164 is formed by bonding the filter 166 to the annular convex portion 169 and bonding (for example, heat welding) the flow path forming film 171 to the flow path convex portion 170 . That is, when the channel protrusion 170 is bonded to the channel forming film 171, the first channel forming recess 168a functions as the first connecting channel part 164a and the second connecting channel part 164b. In addition, the second flow path forming recessed portion 168b functions as the second connecting flow path portion 164b. Furthermore, the third flow path forming recessed portion 168c functions as the third connecting flow path portion 164c. Furthermore, a substantially rectangular plate-shaped protective member 172 for protecting the flow path forming film 171 is attached to the stepped portion 167 .

As shown in FIG. 14 , the curved flow path portion 163 includes: at least one (two in this embodiment) vertical flow path portions 163a, 163b extending in the vertical direction Z; A plurality of (in this embodiment, four) bent portions 173 a to 173 d at the ends; and a lateral flow path portion 163 c extending in the front-rear direction Y.

That is, the first curved portion 173a is located on the lowermost side and connects the rear end of the third connecting flow path portion 164c and the lower end of the first vertical flow path portion 163a. The second curved portion 173b is located above the first curved portion 173a and connects the upper end of the first vertical flow path portion 163a and the front end of the lateral flow path portion 163c. The third curved portion 173c connects the rear end of the lateral flow path portion 163c and the lower end of the second vertical flow path portion 163b. The fourth curved portion 173d connects the upper end of the second vertical flow path portion 163b and the front end of the inclined flow path portion 165 . Therefore, the curved flow path portion 163 and the inclined flow path portion 165 have different ink flow directions, and are bent relative to the inclined flow path portion 165 .

Along the front-rear direction ( The inclined flow path portion 165 is formed so as to extend in a direction intersecting the horizontal direction) Y. That is, the inclined flow path portion 165 forms an upward slope that continues from the flow path opening 162 side toward the outlet port 69 side. Furthermore, the rear end side of the inclined flow path portion 165 is bent upward to communicate with the outlet 69 .

In addition, the lead-out flow path 138 is located on the side of the second ink chamber 152 in the direction of gravity, and is extended along the bottom surface 152 a. Therefore, the bottom surface 152a of the second ink chamber 152 at the portion corresponding to the connecting flow path portion 164 and the lateral flow path portion 163c is approximately horizontal, while the bottom surface 152a of the second ink chamber 152 at the portion corresponding to the inclined flow path portion 165 is approximately horizontal. It becomes a downward slope descending toward the flow path opening 162 side.

Next, the float valve 131 will be described.

As shown in FIG. 22 , the float valve 131 has: a floating member 181 arranged in the ink chamber 137; a valve body 182 arranged below the floating member 181; housing 183 ; and a coil spring 184 as an example of a urging member disposed between the floating member 181 and the restricting housing 183 . In addition, in FIG. 22 , in order to simplify the installation structure of the float valve 131 in the ink chamber 137, a part of the container case 130 forming the ink chamber 137 is shown together with the above-mentioned components constituting the float valve 131. .

Each component of the float valve 131 will be described below.

First, the floating member 181 has a rectangular frame body 185 whose inner side is partitioned into a plurality (four in this embodiment) of space regions. A thin film member 186 made of, for example, a transparent film or the like is bonded to the openings 185a of the left and right side surfaces of the frame body 185 along the front-rear direction Y. Therefore, in the floating member 181 , by closing the opening 185 a of the frame body 185 with the thin film member 186 , a plurality of (four in this embodiment) sealed gas chambers 187 are formed inside the thin film member 186 . Therefore, the floating member 181 can float in the vertical direction Z according to the change in the remaining amount of ink in the ink chamber 137 by the buoyancy force generated by these gas chambers 187 .

On the other hand, protrusions 188 protruding in the front-rear direction Y are respectively formed at the lower parts of the front and rear side surfaces along the left-right direction X of the frame body 185 where the opening 185 a is not formed. In addition, a pressing portion 189 formed in a substantially columnar shape protrudes vertically downward from the central position of the lower surface of the frame body 185 . In addition, a rod-shaped portion 190 arranged coaxially with the pressing portion 189 on the lower surface protrudes from the central position of the upper surface of the frame body 185 so as to extend vertically upward.

In addition, on the upper surface of the frame body 185, a plate-shaped portion 191 is formed around the rod-shaped portion 190 so that the protruding length from the upper surface of the frame body 185 is approximately half of the protruding length of the rod-shaped portion 190. The plate-shaped portion 191 has a cross shape when viewed from above with the rod-shaped portion 190 as the center. The size of the cross-sectional cross-section of the plate-like portion 191 is larger than the outer diameter of the coil spring 184 . A spring seat 191a for placing and supporting the coil spring 184 is formed in a rectangular cutout on the upper end of the plate-shaped portion 191 formed in the cross-sectional shape in the radial direction from the rod-shaped portion 190 .

Next, the valve body 182 is a substantially disk-shaped diaphragm valve formed of a flexible elastic body, and is disposed on the second connecting flow path portion 164 b and the third connecting flow path portion on the outlet flow path 138 . The boundary opening of 164c is formed at a position above the valve port 192 (see FIG. 19 and the like) on the bottom surface 152a of the second ink chamber 152 . That is, an annular mounting seat 193 surrounding the valve port 192 is formed on the bottom surface 152a of the second ink chamber 152, and an annular mounting tool 194 similarly formed is locked to the mounting seat 193 from above, and the valve core 182 It is disposed above the valve port 192 in a state of being sandwiched between the mounting seat 193 and the installation tool 194 .

In addition, when the coil spring 184 is a first urging member having a first urging force, the coil spring 195 functioning as a second urging member having a second urging force always contacts the spool 182 from below. It is arranged on the inner side of the mounting seat 193 in a connected manner. And, the coil spring 195 always biases the valve element 182 toward the valve opening position (the position shown in FIGS. 19 and 28 ) in which the outlet flow path 138 is opened upward away from the valve port 192 .

In addition, the force relationship between the first force of the coil spring 184 and the second force of the coil spring 195 is set to The force relationship is as follows.

That is, it is set so that when the remaining amount of ink in the ink chamber 137 is, for example, as shown in FIG. The sum of the buoyancy force and the second force of the coil spring 195 becomes smaller than the first force of the coil spring 184. On the other hand, it is set so that when the remaining amount of ink in the ink chamber 137 is, for example, as shown in FIGS. The sum of the second force of the springs 195 is greater than the first force of the coil spring 184 .

Next, the restricting case 183 has an annular wall portion 196 and an upper wall portion 197 formed in a box shape with an open bottom. The upper wall portion 197 blocks the upper opening of the annular wall portion 196 . That is, the annular wall portion 196 is formed in an annular shape capable of surrounding the floating region of the floating member 181 in the vertical direction Z at a distance from the side surface of the floating member 181 .

In addition, at the center of the upper wall portion 197 , a cylindrical portion 198 with its upper opening closed is formed so as to communicate with the lower opening of the cylindrical portion 198 via the inner space of the annular wall portion 196 . Further, an insertion hole 198 a through which the rod member 190 protruding upward from the upper surface of the floating member 181 can be inserted is formed through the upper wall portion of the cylindrical portion 198 . In addition, in the upper wall portion of the cylindrical portion 198, a cross-shaped portion in a plan view from above with the insertion hole 198a as the center is formed protruding downward with a plate formed with a cutout on the side of the lower floating member 181. The spring seat 191a of the shaped part 191 facing the vertical direction Z is a spring seat (not shown) facing the vertical direction Z.

In addition, in a state where the components of the float valve 131 are assembled to the left and right side walls 196 a in the front-rear direction Y, the annular wall portion 196 of the restricting case 183 is opposed to the film member 186 of the float member 181 . parts. A rectangular notch 199 extending in the vertical direction Z in which the floating member 181 floats is formed substantially at the center of the left and right side walls 196a in the front-rear direction Y from the lower edge of each side wall 196a upward. The notch 199 is formed such that its width in the front-rear direction Y is greater than the outer diameter of the cylindrical portion 198 of the upper wall 197 and its height in the up-down direction Z is greater than the height in the up-down direction Z of the frame body 185 in the floating member 181. The shape of the size.

Further, from the lower end portions of the front and rear side walls 196b in the front and rear directions X of the annular wall portion 196 of the restricting case 183, a strip-shaped strip having a predetermined width in the front and rear direction Y protrudes horizontally to the front and rear, respectively. The flange part 200. Then, from the substantially center of the flange portion 200 in the left-right direction X and substantially the center of the front-rear direction Y to a position slightly lower than the substantially center of each side wall 196 b in the vertical direction Z, along the vertical direction Z, A long guide hole 201 through which the protrusion 188 on the side of the floating member 181 can be inserted is formed. In addition, in the restricting case 183 , there are two places on the left and right long sides of the upper wall portion 197 to the upper end portions of the left and right side walls 196 a of the annular wall portion 196 and the upper end of the annular wall portion 196 . Each of the four corners of the upper portion is formed with through holes 202 that communicate the inside and outside of the restricting case 183 to allow the flow of ink.

Next, the coil spring 184 is disposed between the floating member 181 and the restriction housing 183 so as to be contractible in the vertical direction Z. That is, the coil spring 184 is placed on the spring seat 191a formed at the upper end of the plate-shaped portion 191 around the rod-shaped portion 190 by inserting the rod-shaped portion 190 of the floating member 181 from below inside the coil spring 184 . Then, from this state, when the floating member 181 is inserted into the insertion hole 198 a of the cylindrical portion 198 with the rod portion 190 relative to the restricting case 183 , and the frame body 185 is inserted into the annular wall portion 196 from below. , the upper end of the coil spring 184 abuts against a spring seat (not shown) protruding downward from the upper wall of the cylindrical portion 198 of the restricting case 183 .

Then, while maintaining the state in which the floating member 181 is pushed into the restricting case 183 by further shrinking the coil spring 184 from this state, the restricting case 183 inserted into the floating member 181 is attached to the second ink in the ink chamber 137. The bottom surface 152 a of the chamber 152 thereby accommodates the float valve 131 in the housing case 130 .

Therefore, next, the mounting structure of the float valve 131 in the container case 130 will be described.

As shown in FIG. 22, the bottom surface 152a of the second ink chamber 152 in the container case 130 sandwiches the mounting seat 193 of the spool 182 at a distance corresponding to the dimension in the front-rear direction Y of the restriction case 183. Locking rails 203 with inverted L-shaped cross sections are formed at two front and rear positions, and the locking rails 203 can be slidably inserted into the front and rear flanges 200 of the limiting housing 183 in the left-right direction X. In addition, two positioning portions 204 are formed between each locking rail portion 203 and the mounting seat 193 and at the front and back of the inner side of the container housing 130, and the positioning portion 204 can be inserted into the flange portion 200. The inner side wall 196 a of the left and right side walls 196 a along the front-back direction Y of the restriction case 183 , which has slid toward the back side of the container case 130 while locking the rail portion 203 , abuts against it.

Furthermore, on the bottom surface 152a of the second ink chamber 152, there are formed protrusions 205 at two positions on the near side corresponding to the positioning portion 204 on the rear side in the left-right direction X, and the protrusions 205 can be removed from the housing case. The front side of the opening side of the body 130 is locked to the lower end portion of the front side wall 196 a of the restriction case 183 such that the rear side wall 196 a comes into contact with the positioning portion 204 . The protruding portion 205 is an elastically deformable structure extending obliquely upward from the inner side of the container case 130 , and is provided so that the flange portion 200 of the restricting case 183 is inserted into the locking rail portion 203 so that When the housing 183 is slid and moved inwardly, the lower end edge of each side wall 196 a slides inwardly from the front side and can pass over the inclined posture of the protruding portion 205 . Then, after passing over the side wall 196a on the near side, the protruding portion 205 elastically returns to the original inclined posture and is locked on the face on the near side of the side wall 196a, thereby preventing the restricting housing 183 from the housing housing. The inner side of 130 is pulled out near the front side.

Next, the action of the liquid storage container 21 of this embodiment will be described. However, in FIG. 24( a ), FIG. 24( b ), and FIG. 24( c ), illustration of the slider 34 and the liquid container 33 is omitted.

As shown in FIG. 23 , a part of the second containing body portion 38 is located in the fitting portion 31 and is immovably fixed in the liquid container 21 of the printer 11. When the sliding handle 94 is displaced upward, the sliding handle 94 and the The engagement of the concave portion 95 of the slider 34 is released. Then, the user can remove the slider 34 from the printer 11 (attachment portion 31 ) by sliding the slider 34 in the direction opposite to the insertion direction along the longitudinal direction thereof.

By this pulling out, the part of the slider 34 located in the printer 11, that is, the part located in the printer 11 in the second container part 38 including the connection part 43 among the upper surface 39 of the liquid container 33 (the second The overlapping parts of the two parts) move toward the outside of the printer 11. In the present embodiment, the slider 34 moves to the point where the user can pull out the insert attached to the slider 34 from the holder mounting portion 86 of the slider 34 outside the printer 11 as shown by the dashed-two dotted line in FIG. 23 . The position of the chip holder 76 at the end 34a on the inner side. Therefore, the portion of the slider 34 that overlaps with a portion (second portion) located inside the printer 11 in the second container portion 38 including the connection portion 43 among the upper surface 39 of the liquid container 33 is regarded as being inside the printer 11. The moving part that moves between the printer 11 and the outside functions.

As a result, the user pulls out the chip holder 76 moved out of the printer 11 from the slider 34 (holder mounting portion 86 ). And, for example, when there is a recording chip 75 already placed on the chip holder 76, the relational information (for example, the hue, hue, Saturation, brightness, and the viscosity of the ink and the type of solute of the ink, etc.) recording chip 75. Then, after the user reinserts the chip holder 76 on which the replaced recording chip 75 is placed and attaches it to the slider 34 (holder mounting portion 86 ), the user moves the slider 34 along the upper surface 39 of the liquid storage body 33 . Insert it into the printer 11 (mounting part 31).

By the insertion of the slider 34, the recording chip 75 placed on the chip holder 76 obliquely with respect to the insertion direction contacts and is electrically connected to the electrical terminal of the communication unit 77 included in the supply unit 32, and transfers the recording chip to the printer 11 side. 75 recorded relationship information. When this connection is made, the recording chip 75 is positioned relative to the electrical terminals 78 . In a state where the relationship information recorded on the recording chip 75 is transferred (read) to the printer 11 , the chip holder 76 is located inside the printer 11 , and a part (first portion) of the slider 34 is located outside the printer 11 . In other words, in a state where the relationship information recorded by the recording chip 75 is read into the printer 11 side, the recording chip 75 and the chip holder 76 are located at a position where the user cannot touch it by hand.

That is, as shown in (a) of FIG. 24 , the communication section 77 provided on the supply section 32 is provided with a terminal section 114 including a plurality of electrodes 75 a formed on the recording chip 75 and a protruding section 115 . The protrusions 115 protrude in the short direction on both sides in the short direction and extend in the insertion direction. The terminal portion 114 engages with the recessed portion (engagement portion) 97 of the chip holder 76 , and the protrusion-shaped portion 115 engages with the groove-shaped portion 107 of the chip holder 76 . The concave portion 97 is formed on a surface constituting a wall of the chip holder 76 and is a surface on the recording chip 75 side.

At this time, as shown in (b) of FIG. It moves toward the communication part 77 while pressing the protruding part 80 from below. During this movement, the protruding portion 115 of the communication portion 77 is guided by the chamfered portion 106 and inserted into and engaged with the groove portion 107 of the chip holder 76 , whereby the chip holder 76 is positioned relative to the communication portion 77 . In this regard, the groove-shaped portion 107 of the chip holder 76 functions as an example of a positioning-shaped portion positioned in the printer 11 .

As a result, as shown in (a) and (c) of FIG. The electrical terminals 78 are suitably in contact with a plurality (here, nine) of electrodes 75 a of the recording chip 75 . In addition, when this contact is made, the electrode 75a of the recording chip 75 is inclined downward in the insertion direction, so the electric terminal 78 rubs against the surface of the electrode 75a.

Next, the operation related to the ink injection into the liquid storage container 21 will be described.

In addition, when injecting ink into the liquid container 33, the opening and closing cover 74 is displaced to the opening position as shown in FIG. The cover 120 is placed on the back surface 74a of the back surface 74a so that the injection port 73 is exposed.

At this time, after the user pulls out the injection port 73 from the cover body 120, the user rotates the cover member 121 by an arbitrary angle (180 degrees in this embodiment) with respect to the liquid receiving surface 116 around the fixed part 123 as a rotation center, The cover body 120 is placed on the back surface 74 a of the opening and closing cover 74 . In addition, in the state shown in FIG. 9( b ), the back surface 74 a of the open-close cover 74 is positioned higher in the vertical direction Z than the liquid receiving surface 116 . In the state of the back surface 74a of 74, the connecting portion 125 is in a slightly stretched state. Then, a restoring force accompanying the elastic deformation (extension) of the connecting portion 125 acts on the cover body 120 from the opening and closing cover 74 in the forward direction. In this regard, in this embodiment, since the cover body 120 abuts on the hook portion 110 of the opening and closing cover 74 , it is suppressed that the cover body 120 rolls off from the opening and closing cover 74 . In addition, the back surface 74a of the opening and closing cover 74 at the opening position is in the lowest state on the side where the hook portion 110 is formed. Therefore, for example, even if the covering body 120 with ink attached is placed on the back surface 74a of the opening and closing cover 74, This ink can be suppressed from spreading over the entire surface of the opening and closing cover 74 (particularly, the rear surface area).

Then, as shown in FIGS. 25 and 26 , the edge portion 128 of the overlaid film or the like is welded and ink is injected into the liquid container 33 from the liquid injection source 126 formed with the injection port 127 . When injecting ink, the edge portion 128 near the injection port 127 of the liquid injection source 126 is inserted and abutted against the notch groove 118 formed in the peripheral wall portion 117 of the liquid container 33, so that the liquid injection source 126 is positioned relative to the liquid container. 33 positioning. Then, as shown in FIG. 26 , the liquid injection source 126 is tilted so that the injection port 127 of the liquid injection source 126 is downward with the point of contact between the liquid injection source 126 and the liquid container 33 as the deflection center. The ink in the liquid injection source 126 is injected into the first ink chamber 151 through the injection port 73 of the liquid container 33 .

At this time, if the user suddenly tilts the liquid injection source 126 , the ink flowing from the injection port 127 of the liquid injection source 126 may overflow from the injection port 73 and flow around the injection port 73 in the liquid receiving surface 116 . Even in this case, the peripheral wall portion 117 surrounding the liquid receiving surface 116 intercepts the ink flowing to the liquid receiving surface 116 to suppress the ink from flowing out from the liquid receiving surface 116 to the outside. Since the liquid receiving surface 116 is inclined downward toward the inlet 73 in the left-right direction X and the front-rear direction Y, ink adhering to the liquid receiving surface 116 is guided to the inlet 73 along the inclination.

When the injection of ink is completed, as shown in (a) of FIG. The opening and closing cover 74 is displaced to the cover closing position, and the injection operation is completed.

In addition, as shown in FIG. 27 , in the state where a plurality of liquid storage containers 21 are arranged in a line and used, from the fixing portion 123 (fixing hole 124 ) of the cover member 121 in one liquid storage container 21 (for example, the left end) to the injection The distance L6 of the inlet 73 is shorter than the distance L7 from the fixing portion 123 in one liquid storage container 21 to the injection port 73 in the other liquid storage container 21 arranged in line with the liquid storage container 21 . As a result, as shown in FIG. 27 , even if the covering body 120 of the covering member 121 disposed corresponding to the liquid containing body 33 at the left end tends to align with the injection port 73 of the liquid containing body 33 ( In FIG. 27 , it is indicated by a two-dot chain line), and the covering body 120 cannot cover the injection port 73 either. In addition, distances L6 and L7 represent distances connecting the central positions of the fixed portion 123 (fixed hole 124 ) and the injection port 73 when viewed from above as shown in FIG. 27 .

Next, the action in the liquid container 33 when ink is injected from the injection port 73 will be described.

In addition, as shown in FIG. 14 , when ink is injected from the injection port 73 , the liquid level of the first ink chamber 151 rises, and the ink flows into the second ink chamber 152 through the wall communication opening 155 . In addition, since the concave portion 154 formed in the first ink chamber 151 and the inlet 73 are shifted in the front-rear direction Y, even if foreign matter accumulates in the concave portion 154 , it is possible to suppress foreign matter from flying up.

In addition, the first ink chamber 151 and the second ink chamber 152 communicate through the wall ventilation opening 156 . Therefore, the pressures in the first ink chamber 151 and the second ink chamber 152 are substantially the same, and therefore the liquid levels of the ink in the first ink chamber 151 and the second ink chamber 152 rise at substantially the same height in the vertical direction Z.

Rib communicating openings 161 are formed at both ends of the third transversely inclined rib portion 158c and the fourth transversely inclined rib portion 158d, so the ink passes through the rib communicating opening 161, and the liquid level of the ink is between the third transversely inclined rib portion 158c and the fourth transversely inclined rib portion 158c. Both sides of the oblique rib portion 158d are located at substantially the same position. And, the ink passes through the gap formed between the first horizontally inclined rib portion 158a and the second horizontally inclined rib portion 158b and the film 133, and the liquid level of the ink moves to a level higher than that of the first horizontally inclined rib portion 158a and the second horizontally inclined rib portion 158a. The part 158b is near the upper position. Then, when the liquid level of the ink rises further, the ink spreads to rise on the inclined bottom surface 152a, and the ink passes through the rib communication openings 161 of the fourth to ninth intersecting rib portions 157d to 157i to raise the liquid level.

Furthermore, since the rib ventilation openings 160 are formed in the intersecting ribs 157 a to 157 i , the pressures in the spaces on both sides of the intersecting ribs 157 a to 157 i are substantially the same in the second ink chamber 152 . Therefore, the liquid level of the ink in the second ink chamber 152 also rises in the vertical direction Z at substantially the same height as each other.

However, in the liquid container 33 having the injection port 73, foreign matter such as dirt or dust may be mixed through the injection port 73, the foreign matter itself may accumulate, or the ink itself may become a foreign matter due to drying of the ink at the air-liquid interface. In addition, in the first ink chamber 151 , foreign substances are deposited on the bottom surface 153 and the concave portion 154 . Furthermore, since the wall communication opening 155 is formed away from the recess 154 , the entry of foreign matter is suppressed compared with the inflow of ink into the second ink chamber 152 . That is, among the foreign objects entering from the injection port 73 , especially large-sized foreign objects or heavy foreign objects tend to stagnate in the first ink chamber 151 .

In addition, in the second ink chamber 152 , foreign matter accumulates on the laterally inclined ribs 158 a to 158 d in the front region and accumulates on the bottom surface 152 a in the rear region over time. Furthermore, since the lateral oblique ribs 158a to 158d and the bottom surface 152a on which foreign matter accumulates are inclined so as to intersect with the front-rear direction Y, when the liquid level of the ink is lowered when the ink is led out from the outlet 69, the movement of the liquid level is accompanied by a change in the liquid level. The accumulated foreign matter moves in one direction (downward direction).

Furthermore, when ink is injected from the injection port 73, air bubbles may enter along with the injection of the ink. Then, when air bubbles enter the second ink chamber 152 or the incorporated gas becomes air bubbles in the second ink chamber 152 , the air bubbles move upward and reach the horizontally inclined ribs 158 a to 158 d. In this regard, in this embodiment, since the horizontally inclined ribs 158a to 158d intersect with the front-rear direction Y, the air bubbles move along the inclined horizontally inclined ribs 158a to 158d and are guided to the liquid surface.

In addition, the ink in the second ink chamber 152 flows through the outlet flow path 138 from the flow path opening 162 and is led out from the outlet 69 . That is, first, foreign matter or air bubbles are captured by the filter 166 of the ink led out from the flow channel opening 162 . Then, the ink flows toward the curved flow path portion 163 via the second connection flow path portion 164b and the third connection flow path portion 164c.

In addition, since the curved flow path portion 163 changes the flow direction of the ink, the gas incorporated into the ink tends to generate bubbles. In this regard, according to such a configuration, since the cross-sectional area of the curved flow path portion 163 is larger than the cross-sectional area of the third connecting flow path portion 164c, the generated bubbles flow toward the inclined flow path portion 165 side along with the flow of ink. move. Furthermore, the cross-sectional area of the inclined flow path portion 165 is larger than that of the third connecting flow path portion 164c, and the side of the guide port 69 becomes an upward slope, so the air bubbles generated in the curved flow path portion 163 move along the inclined flow path portion 165 To the export port 69 side, the ink is exported from the export port 69 together.

Next, the action of the float valve 131 will be described.

In addition, the state shown in FIG. 19 is a state in which the liquid level line IL of the ink in the ink chamber 137 is very much above the line EL when compared with the threshold remaining amount, that is, the remaining amount of ink in the ink chamber 137 is from the liquid jet head. 24 A state in which a sufficient amount of ink is ejected to the sheet S to continue printing. Therefore, in the state shown in this FIG. 19 , the sum of the second force of the coil spring 195 and the buoyancy of the floating member 181 is above the first force of the coil spring 184, so the floating member 181 will not be moved by the force of the coil spring 184. The first acting force pushes down the valve core 182 to abut against the valve port 192 .

That is, in this case, as shown in FIG. 19 , the sum of the buoyancy forces generated by the gas chambers 187 of the floating member 181 exceeds the first biasing force of the coil spring 184 , and the floating member 181 becomes upward from the valve body 182 . The position where the party left is in a floating state. On the other hand, since the spool 182 is not pressed downward from the coil spring 184 via the floating member 181, only the second upward force from the coil spring 195 is received, and the spool 182 moves upward from the valve port 192 to move upward. It is located at the valve open position where the outlet flow path 138 is opened.

Furthermore, since the printing is continued from the state shown in FIG. 19 , the remaining amount of ink in the ink chamber 137 gradually decreases. When the ink liquid level line IL approaches the threshold remaining amount line EL, as shown in FIG. 28 , the sum of the force of the floating member 181 and the second biasing force of the coil spring 195 and the first biasing force of the coil spring 184 are in balance with each other. Therefore, the floating member 181 is pressed downward by the first urging force of the coil spring 184, and the pressing portion 189 on the lower surface of the floating member 181 comes into contact with the valve element 182 at the valve opening position from above. In addition, at this time, although the floating member 181 comes into contact with the valve element 182 from above, it does not displace the valve element 182 downward to the valve closed position.

Then, since the printing is continued from the state shown in FIG. 28 , the remaining amount of ink in the ink chamber 137 is further reduced. As shown in FIG. 29 , the sum of the buoyancy force of the floating member 181 and the second urging force of the coil spring 195 becomes smaller than the first urging force of the coil spring 184 . Therefore, the floating member 181 is further pressed downward by the first biasing force of the coil spring 184 , and the pressing portion 189 on the lower surface thereof presses the valve element 182 at the valve opening position downward. As a result, the spool 182 is displaced to the closed position for closing the valve port 192 .

Then, since the valve port 192 is blocked, the lead-out flow path 138 is closed, and the ink does not flow to the downstream side of the valve port 192 . Therefore, the ink does not flow into the liquid chamber 53 disposed on the downstream side of the outlet flow path 138. As a result, the remaining amount detection rod 45 moves to maintain the state of blocking the light between the light emitting part and the light receiving part of the sensor 68. Therefore, it is detected by the sensor 68 that the remaining amount of ink is less than the threshold remaining amount. Then, when the detection result is received and ink is injected into the ink chamber 137 from the injection port 73 again, the liquid level line IL of the ink in the ink chamber 137 is located above the threshold remaining line EL again, so the buoyancy force When the first biasing force of the coil spring 184 is exceeded, the floating member 181 floats away from the spool 182 upward.

At this time, the valve element 182 at the valve position closing the valve port 192 is in the state of the valve closing position when the pressing portion 189 of the floating member 181 is pressed downward by the first biasing force of the coil spring 184. If it is long, it may be stuck to the valve port 192 even after the floating member 181 releases the pressure from above. Regarding this point, in the case of this embodiment, the second biasing force of the coil spring 195 biases the valve element 182 at the valve closing position upward to the valve opening position, so even if the valve element 182 is temporarily attached to the valve port 192 By peeling off from the valve port 192, such a sticking state is released.

In addition, when the ink is suddenly injected into the ink chamber 137 from the injection port 73 , the inflow pressure of the ink into the ink chamber 137 at the time of the injection may also become strong. Therefore, the film member 186 which closes the opening 185a of the frame body 185 in the float valve 131 and forms the gas chamber 187 may be damaged or damaged when directly subjected to such a strong inflow pressure. In this regard, in the case of the present embodiment, the float valve 131 is arranged in the second ink chamber 152 separated from the first ink chamber 151 in which the injection port 73 is formed by the partition wall 150 . Therefore, the ink injected from the injection port 73 is prevented from directly falling onto the float valve 131 from above.

In addition, even when ink suddenly flows in from the first ink chamber 151 side to the second ink chamber 152 side through the wall communication opening 155 formed in the partition wall 150, there is a problem in the float valve 131 due to the inflow pressure. The thin film member 186 of the floating member 181 is subject to fear of damage. In this regard, in the present embodiment, the front-rear direction Y, which is the flow direction of the ink into the second ink chamber 152 via the wall communication opening 155, is in a non-opposed state, that is, as a thin film member. The floating member 181 is arranged in the second ink chamber 152 in a state along the front-rear direction Y at 186 . Therefore, the inflow pressure of the ink flowing into the second ink chamber 152 from the wall communication opening 155 acts on the membrane member 186 of the floating member 181 in a flow manner that flows in the front-rear direction Y along the membrane surface.

In addition, some of the plurality (four in this embodiment) of the gas chambers 187 may lose their airtight structure due to partial damage to the thin film member 186 of the floating member 181 due to deterioration over time. In addition, in this case, the buoyancy of the floating member 181 as a whole becomes small, and therefore, the valve function of the float valve 131 may be hindered. However, in this embodiment, it is set so that even if there is only one gas chamber 187, when the remaining amount of ink is greater than or equal to the threshold remaining amount, the buoyancy force generated by the one gas chamber 187 and the second force of the coil spring 195 The sum of the two acting forces is also above the first acting force of the coil spring 184 . Therefore, even when there is one gas chamber 187, the float valve 131 functions as a valve without hindrance.

In addition, when the floating member 181 floats in the up-and-down direction Z as the remaining amount of ink in the ink chamber 137 changes, the floating member 181 moves in the front-back direction by inserting the rod-shaped part 190 into the insertion hole 198a of the cylindrical part 198 . Alignment between Y and X in the left-right direction. Furthermore, since the protrusions 188 protruding from the front and rear side surfaces of the frame body 185 are inserted into the long guide holes 201 of the restriction housing 183 , the rotation of the floating member 181 around the rod-shaped portion 190 is restricted. Further, the float member 181 on which the coil spring 184 is placed is regulated by the upper wall of the cylindrical portion 198 of the control housing 183 to float upwardly from the valve opening position of the valve body 182 .

Furthermore, when the floating member 181 floats in the front-rear direction Y and the left-right direction X in the ink chamber 137, for example, the cross-shaped plate-shaped part 191 and the inner surface of the cylindrical part 198 contact each other in the horizontal direction to restrict the movement. The membrane member 186 is in surface contact with the opposite side wall 196 a of the limiting housing 183 . That is, the floating member 181 is set such that the distance between the front end edge in the radial direction of the plate-shaped portion 191 and the inner surface of the cylindrical portion 198 is set in a state where the rod-shaped portion 190 is inserted into the insertion hole 198 a of the cylindrical portion 198 . The distance is smaller than the separation distance between the film member 186 and the inner surfaces of the left and right side walls 196 a of the restriction case 183 . Therefore, the thin film member 186 that regulates the floating member 181 is in surface contact with the side walls 196 a that face the thin film member 186 in the restrictive case 183 . In this regard, the plate-like portion 191 functions as an example of a regulating abutment portion that restricts surface contact between opposing surfaces of the regulating housing 183 and the floating member 181 that face each other in the horizontal direction.

In addition, in this case, since the side wall 196a of the restriction case 183 and the film member 186 of the floating member 181 are opposed to each other in the left-right direction X, a rectangular cutout is formed in the side wall 196a of the restriction case 183. 199, therefore, it is also possible to prevent the film member 186 from sliding on the inner surface of the side wall 196a of the restricting case 183 to be damaged.

In addition, especially when the floating member 181 floats upward in the restricting case 183 , the ink in the restricting case 183 may be pressed from below by the floating member 181 to increase the ink pressure. In this regard, in this embodiment, ink is allowed to flow out from the through-holes 202 and cutouts 199 formed in a plurality of places in the restricting case 183 for such an increase in ink pressure, thereby suppressing an unnecessary increase in ink pressure.

According to the first embodiment described above, the following effects can be obtained.

(1) For the liquid storage container 21 , the injection port 73 is formed at a first portion (the first storage body portion 37 ) of the liquid storage body 33 outside the printer 11 , so in the state where the liquid storage body 33 is fixed to the printer 11 Able to inject ink. Therefore, it is possible to suppress damage or overflow of the liquid remaining inside during the ink injection operation. In addition, the liquid container 33 is more likely to be held in the printer 11 without falling due to the second portion (second container portion 38 ) of the liquid container 33 inside the printer 11 when the fixed state is released. .

(2) With regard to the liquid storage container 21 , the recording chip 75 that records the relationship information of the ink injected into the liquid storage body 33 that is fixed to be immovable can be transferred from the printer 11 using the slider 34 that slides relative to the liquid storage body 33 . Move outward to the inside of the printer 11. Therefore, when the recording chip is moved into the liquid consuming device, if the recording chip is designed to be in contact with, for example, the electrical terminal 78 provided in the liquid consuming device, the relationship information of the ink injected into the liquid container 33 can be stored. is passed to the printer 11 correctly. In addition, after the recording chip 75 is mounted on the chip holder 76 provided at the moving portion of the slider 34 outside the printer 11, the mounted recording chip 75 can be easily inserted into the printer 11 by sliding the slider 34. .

(3) Since the injection port 73 is covered by the slider 34 , entry of foreign matter into the injection port 73 can be suppressed without providing a separate cover for the injection port 73 .

(4) In a state where the slider 34 covers the injection port 73 , the injection port 73 can be covered or exposed by displacement of the provided opening and closing cover 74 without sliding the slider.

(5) In a state where the opening and closing cover 74 is displaced from the closing position to the opening position, the opening and closing cover 74 is located on the side of the printer 11 with respect to the injection port 73 . Therefore, the opening and closing cover 74 does not interfere with the operation of injecting ink into the injection port 73 .

(6 Since the opening and closing cover 74 can be stably maintained at the closed position, it is possible to prevent the opening and closing cover 74 from being accidentally opened and the injection port 73 being exposed.

(7) Since the chip holder 76 is positioned in the printer 11 in a direction intersecting the moving direction of the moving part, the recording chip 75 mounted on the chip holder 76 is also positioned in the printer 11 with high precision. Therefore, for example, the electrical terminal 78 included in the printer 11 is in contact with the recording chip 75 while suppressing misalignment with respect to the recording chip 75 , so the relationship information recorded on the recording chip 75 is transferred to the printer 11 with a high probability.

(8) Since the chip holder 76 is suppressed from moving in the sliding direction of the slider 34 , it is positioned with high precision with respect to the sliding direction of the slider 34 in the printer 11 . In addition, since the recording chip 75 placed on the chip holder 76 is inclined with respect to the sliding direction of the slider 34, for example, the electrical terminal 78 included in the printer 11 moves while rubbing on the recording chip 75 (electrode 75a), thereby are electrically connected. Therefore, the reliability of electrical conduction becomes high.

(9) When the user injects ink into the first ink chamber 151 (ink chamber 137 ) of the liquid container 33 through the injection port 73 , even if the ink drops around the injection port 73 , it can be received by the liquid receiving surface 116 . The ink. Furthermore, since the liquid receiving surface 116 is inclined downward (in the direction of gravity) toward the inlet 73 , the ink received by the liquid receiving surface 116 is guided to the inlet 73 along the inclined liquid receiving surface 116 . Therefore, when ink is injected into the injection port 73 of the liquid storage container 21, even if the ink drops to the periphery of the injection port 73, the ink can be prevented from flowing along the outer surface of the liquid storage container 21 from the periphery of the injection port 73. pollute the surroundings.

(10) By virtue of the peripheral wall portion 117 surrounding the liquid receiving surface 116 , when ink is injected into the first ink chamber 151 of the liquid container 33 , the ink can be prevented from overflowing to the outside of the liquid receiving surface 116 .

(11) When the user injects ink from the liquid injection source 126 into the first ink chamber 151 through the injection port 73 , the liquid injection source 126 can be positioned by bringing the liquid injection source 126 into contact with the cutout groove 118 of the peripheral wall 117 . Accordingly, when the user injects ink from the liquid injection source 126 into the first ink chamber 151, the ink can be stably injected.

(12) The covering body 120 covering the injection port 73 is fixed to the liquid container 33 via the connecting portion 125 and the fixing portion 123 . Therefore, when the covering body 120 is pulled out from the injection port 73, the possibility of losing the covering body 120 can be reduced. In addition, since the cover body 120 covers the injection port 73 , it is possible to suppress evaporation of ink from the first ink chamber 151 and mixing of foreign matter into the first ink chamber 151 .

(13) When injecting ink, the cover body 120 can be placed on the back surface 74 a of the opening and closing cover 74 at the opening position. Accordingly, when the user injects ink into the first ink chamber 151 , for example, it is possible to prevent the user from filling the ink with one hand being occupied by holding the cover 120 .

(14) When the cover 120 is placed on the cover 74 at the open position, even if ink adheres to the cover 120 , the ink can be prevented from leaking out of the cover 74 by the shielding portion.

(15) The covering body 120 can be placed so as to be accommodated in the surface area of the back surface 74 a of the opening and closing cover 74 at the opening position. Furthermore, even if ink adheres to the placed cover 120, since the back surface 74a of the opening and closing cover 74 is inclined downward (in the direction of gravity) toward the inlet 73, the ink can be prevented from spreading to the entire area of the back surface 74a.

(16) Since the connecting portion 125 of the covering member is bent, it can be placed on the liquid receiving surface 116 with good accommodation properties. In addition, when ink adheres to the cover body 120 when the cover body 120 is pulled out from the injection port 73, it is possible to make it difficult for the ink to transfer to the connection part 125 compared with the case where the connection part 125 is formed linearly. .

(17) Since the fixing portion 123 is fixed at a position higher than the injection port 73 on the liquid receiving surface 116, when ink is injected into the liquid container 33, it is possible to make it difficult for the ink flowing on the liquid receiving surface 116 to adhere to the liquid receiving surface 116. The fixing portion 123 of the cover member 121 is covered. According to this, for example, it is possible to suppress influence on the fixing state of the fixing part 123 due to ink adhering to and solidifying on the fixing part 123 .

(18) When the user injects a plurality of types of ink into a plurality of liquid storage containers 21 (ink chambers 137 ), it is possible to prevent the covering body 120 provided corresponding to one liquid storage container 21 from being covered by the one liquid storage container 21 . The injection ports 73 of other liquid storage containers 21 arranged in a row. This prevents ink from being mixed into the ink chamber 137 of the other liquid container 21 via the cover 120 due to the cover 120 provided corresponding to one liquid container 21 covering the injection port 73 of the other liquid container 21 .

(19) The wall communication opening 155 is located at a position twisted with respect to the injection port 73 and away from the bottom surface 153 . Therefore, the ink injected from the injection port 73 flows into the second ink chamber 152 through the wall communication opening 155, while foreign matter mixed in from the injection port 73 or generated in the first ink chamber 151 is less likely to pass through than the ink. The wall communicates with the opening 155 . That is, foreign matter can be easily retained in the first ink chamber 151 , and therefore, the ink in which the foreign matter is suppressed flows into the second ink chamber 152 . Therefore, even when foreign matter is mixed in from the injection port 73 or is generated inside, the possibility of drawing out the mixed foreign matter from the lead-out port 69 can be reduced and the ink can be led out satisfactorily.

(20) Since the bottom surface 153 is formed with the concave portion 154 that is depressed toward the direction of gravity, even when the foreign matter remaining in the first ink chamber 151 settles over time, the foreign matter can be accumulated in the concave portion 154 . That is, even when ink is injected from the injection port 73 while foreign matter is accumulated in the concave portion 154 , it is possible to suppress the deposited foreign matter from flying from the inside of the concave portion 154 to the outside of the concave portion 154 .

(21) It is possible to accumulate foreign matter mixed or generated in the concave portion 154 . Furthermore, since the concave portion 154 is provided at a position shifted from the injection port 73 in the direction intersecting with the direction of gravity, when ink is injected from the injection port 73 , it is possible to further suppress flying of foreign matter accumulated in the concave portion 154 .

(22) By making the distance L1 between the flow path opening 162 and the partition wall 150 smaller than the distance L2 between the upper end of the concave portion 154 and the lower end of the wall communication opening 155 , the flow path opening 162 can be formed near the partition wall 150 . Therefore, foreign matter passing through the wall communication opening 155 together with ink from the first ink chamber 151 side to the second ink chamber 152 side settles into the flow path opening 162 to reduce the possibility of entering the outlet flow path 138 .

(23) Even when a foreign matter enters the second ink chamber 152 or a foreign matter is generated in the second ink chamber 152, the foreign matter deposited in the second ink chamber 152 can be accumulated on the laterally inclined ribs 158a to 158d superior. Therefore, it is possible to further suppress foreign substances from being mixed into the ink that is led out from the flow path opening 162 located on the side in the direction of gravity with respect to the laterally inclined rib portions 158 a to 158 d to the outlet flow path 138 .

(24) Since the horizontal oblique ribs 158 a to 158 d extend in a direction intersecting the vertical direction and the front and rear direction Y, ink accumulated in the lateral oblique ribs 158 a to 158 d can be reduced as the ink stored in the second ink chamber 152 decreases. Foreign matter gathers in one direction.

(25) The float valve 131 that displaces the spool 182 using the floating member 181 that floats as the remaining amount of ink changes. possibility. In this regard, since foreign matter can be deposited on the transversely inclined ribs 158a to 158d provided on the anti-gravity direction side of the float valve 131, it is possible to suppress foreign matter settled in the second ink chamber 152 from accumulating on the floating member 181. .

(26) Even if the foreign matter accumulated on the third horizontal rib portion 158c and the fourth horizontal rib portion 158d moves from the third horizontal rib portion 158c to the fourth horizontal rib portion When the fourth lateral oblique rib portion 158d is dropped, foreign objects can be dropped while avoiding the float valve 131 .

(27) The ink led out from the flow path opening 162 can be made to flow toward the float valve 131 side after passing through the filter 166 . That is, for example, among the foreign matter mixed into the ink in the first ink chamber 151 from the injection port 73 , relatively large foreign matter stays in the first ink chamber 151 and accumulates on the lateral diagonal ribs in the second ink chamber 152 . on parts 158a-158d. Therefore, the size of the foreign matter mixed into the ink exported from the flow path opening 162 toward the outlet flow path 138 is relatively small, so for example, even when entering from the flow path opening 162, compared with the case where a large foreign matter enters, it is possible to Clogging of the outlet flow path 138 is suppressed. Furthermore, by passing the ink through the filter 166 provided in the lead-out flow path 138 , it is possible to further reduce foreign matter mixed into the ink led out from the lead-out port 69 .

(28) Since the area of the wall communication opening 155 is smaller than that of the injection port 73 , when a large foreign matter enters from the injection port 73 , the possibility of the foreign matter entering the second ink chamber 152 through the wall communication opening 155 can be reduced.

(29) Bubbles in the ink tend to stay in the bent portion of the outlet flow path 138 . In this regard, the air bubbles located in the curved flow path portion 163 are led out to the guide outlet 69 side through the inclined flow path portion 165 . Therefore, for example, it is possible to suppress the possibility that air bubbles remaining in the curved flow path portion 163 grow larger and clog the outlet flow path 138 , so that the ink can be led out while reducing the influence of the air bubbles.

(30) Air bubbles that have already occurred can be captured in advance by passing the ink through the filter 166 before flowing to the curved flow path portion 163 where air bubbles are likely to stagnate.

(31) Since the air bubbles generated in the ink chamber 137 move upward in the direction of gravity, the possibility of air bubbles entering from the flow channel opening 162 to the outlet flow channel 138 can be reduced by opening the flow channel opening 162 on the bottom surface 152 a.

(32) The ink chamber 137 can be reinforced by forming the laterally inclined ribs 158 a to 158 d. Since the oblique ribs 158a to 158d extend in a direction intersecting the horizontal direction, when air bubbles are generated in the ink contained in the ink chamber 137, the air bubbles can be moved along the oblique ribs 158a to 158d. That is, it is possible to reduce the possibility of air bubbles being trapped by the laterally inclined ribs 158a to 158d.

(33) The bottom surface 152 a of the ink chamber 137 can be inclined along the inclined flow path portion 165 . That is, since the inclined flow path portion 165 is formed so that the side of the flow path opening 162 is lower, the ink in the ink chamber 137 can be collected toward the side of the flow path opening 162 .

(34) Since the inclined flow path portion 165 has a large cross-sectional area, the possibility of clogging the inclined flow path portion 165 due to air bubbles generated in the curved flow path portion 163 can be reduced.

(35) Even when air bubbles are generated in the wall communication opening 155 , since the upper surface 155 c on the anti-gravity direction side is inclined, the possibility of air bubbles remaining in the wall communication opening 155 can be reduced.

(36) The pressure difference between the first ink chamber 151 and the second ink chamber 152 can be reduced by the wall ventilation opening 156 formed in the partition wall 150 . Moreover, the wall ventilation opening 156 formed in the partition wall 150 is formed at a position closer to the top surface 137b than the rib ventilation opening 160 formed in the intersecting rib portions 157a to 157i, so that the ink in the second ink chamber 152 can be reduced from being ventilated through the wall. The possibility of opening 156 into the first ink chamber 151.

(37) By forming the positioning protrusions 141 , it is possible to suppress deviation of the air passage forming film 147 and easily adhere to the meandering grooves 142 , 143 .

(38) The filter 166 can be easily replaced by attaching the filter 166 to the first channel forming recess 168 a formed on the lower surface of the early administration container case 130 .

(39) For the float valve 131 disposed in the second ink chamber 152 of the liquid container 33 , the film member 186 closing the opening 185 a of the gas chamber 187 does not directly receive the inflow into the second ink chamber 152 by injection from the injection port 73 . The inflow pressure of the ink in the ink chamber 152 . That is, the inflow pressure of the ink acts on the thin film member 186 along the film surface of the thin film member 186 . Therefore, even when ink is suddenly injected into the first ink chamber 151 of the ink chamber 137 from the outside through the injection port 73, the inflow pressure of the ink into the second ink chamber 152 through the first ink chamber 151 can be suppressed. The thin film member 186 of the floating member 181 strongly acts in a direction to press the thin film member 186 . Therefore, the float valve 131 arranged inside is not damaged by the inflow pressure of the ink injected from the outside, and proper valve operation can be maintained.

(40) Since the float valve 131 is disposed in the second ink chamber 152 separated from the first ink chamber 151 formed with the injection port 73 by the partition wall 150 , the ink injected from the outside through the injection port 73 can be prevented from directly falling to the float valve. 131 , regarding this point, the possibility of damage to the float valve 131 can be further reduced.

(41) For example, if the volume of the gas chamber 187 is designed to be the sum of the volumes of the remaining gas chambers 187 even if one of the gas chambers 187 in a plurality (four as an example) breaks the airtight state due to damage or the like When desired buoyancy is generated in the floating member 181, the function of the float valve 131 can also be maintained satisfactorily.

(42) In particular, after a long time elapses since the remaining amount of ink is less than the threshold remaining amount and the valve body 182 is located at the valve closed position, the remaining amount of ink is increased to be equal to or greater than the threshold remaining amount by injecting ink through the injection port 73 In this case, the valve element 182 can be prevented from being stuck to the valve closing position, and the valve element 182 can be quickly displaced from the valve closing position to the valve opening position.

(43) The inflow pressure of the ink flowing into the second ink chamber 152 can be suppressed from directly reaching the floating member 181 by the annular wall portion 196 of the restricting case 183 , and the floating member 181 is relative to the restricting case when floating in the up-down direction Z. The annular wall portion 196 of the body 183 slides in a surface contact state, thereby reducing the possibility of movement resistance occurring.

(44) When the floating member 181 floats in the vertical direction, the possibility of the thin film member 186 sliding on the annular wall portion 196 of the regulating case 183 and being damaged can be reduced.

(45) When the floating member 181 floats in the vertical direction Z, the ink is allowed to flow between the inner side and the outer side of the shape wall portion 196 of the housing 183 through the 202, so that the floating corresponding to the change in the remaining amount of ink can be ensured. The smooth floating state of the part 181.

(46) It is possible to reduce the possibility that the opposing surfaces of the restriction case 183 and the floating member 181 facing each other in the horizontal direction, that is, the film member 186 and the side wall 196a are fixed by the surface tension of the ink, and thus can be well maintained. Proper valve action of the float valve 131.

(47) By pressing the floating member 181 against the spool 182 with a small stroke, the spool 182 can be displaced between the valve opening position and the valve closing position, thereby contributing to downsizing of the float valve 131 .

(Second Embodiment)

Next, a second embodiment of the liquid storage container will be described with reference to the drawings. In this second embodiment, the shape of the cover 210 covering the case opening 132 of the container case 130 is different from that of the first embodiment. In addition, the other points are almost the same as those of the first embodiment, so the same reference numerals are assigned to the same configurations, and repeated descriptions are omitted.

As shown in FIG. 30 and FIG. 31 , in the part of the cover 210 that covers the case opening 132 through the film 133 and constitutes the front side of the first container part 37 , an opposing surface 210 a facing the film 133 is formed along the front side. Extending at least one reinforcing rib 211 . The reinforcing ribs 211 are formed on the outer surface 210b side opposite to the facing surface 210a over the vertical direction Z intersecting the front-back direction Y which is horizontal in the state of use. That is, at least a part of the reinforcing rib 211 is formed to be located on the lower side (the side in the direction of gravity) of the central position of the ink chamber 137 in the vertical direction Z. In addition, in this embodiment, the reinforcing rib 211 is formed along the vertical direction Z, but the direction in which the reinforcing rib 211 is formed is not limited thereto. For example, a form may be adopted in which the reinforcing rib 211 is formed in a direction intersecting the vertical direction Z and the front-rear direction Y. In addition, the reinforcing ribs 211 may also be arranged along the front-rear direction Y.

In addition, in the portion constituting the front side of the first container portion 37 in the cover 210, the supporting rib 213 as a portion supporting the reinforcing member 212 is along the front-rear direction Y intersecting the vertical direction Z in which the reinforcing rib 211 extends. form. In addition, the width of the support rib 213 in the vertical direction Z is wider than the width of the reinforcing rib 211 in the front-back direction Y, and a concave strip 213a is formed on the opposing surface 210a side, and the upper and lower sides of the concave strip 213a The respective dimensions in the direction Z and the left-right direction X are substantially the same as the dimensions of the reinforcing member 212 .

As shown in FIG. 31 , the reinforcing member 212 is arranged in the concave strip 213a on the side of the opposing surface 210a of the supporting convex strip 213 and is sandwiched between the film 133 and the cover 210 in the left-right direction X. That is, the reinforcing member 212 is provided along the surface of the film 133 at a position on the opposite side to the ink chamber 137 in the film 133 . Furthermore, when the film 133 is loaded by the weight of the ink contained in the ink chamber 137 , the reinforcing member 132 presses the film 133 from the outside of the ink chamber 137 to suppress deformation of the film 133 . In addition, the reinforcing member 212 of the present embodiment is a rectangular plate material formed of metal such as iron or copper, and is more rigid than the cover 210 formed of resin, so that it is less likely to be deformed.

In FIG. 32 , the housing case 130 and the reinforcing member 212 are shown without the cover 210 . As shown in FIG. 32 , when the film 133 is in the gravitational direction, the reinforcing member 212 is formed in the front-back direction Y at a position lower than the center position of the ink chamber 137 in the up-down direction Z. That is, the reinforcing member 212 is provided in a region facing the bonding surface 150 a of the partition wall 150 formed in the ink chamber 137 as an example of the bonding rib to which the film 133 is bonded. In addition, a part of the reinforcement member 212 (a front end portion that is one end portion in the front-rear direction Y in FIG. 32 ) is provided at a position opposite to the first ink chamber 151 in the film 133 .

However, in the case opening 132, at the lower end portion 132a and the upper end portion 132b, the portion to which the film 133 is bonded is formed along the front-rear direction Y, while at the middle portion 132c, the portion to which the film 133 is bonded is formed along the direction Y. The up and down direction Z is formed. Therefore, the area of the portion where the film 133 is bonded in the middle portion 132c in the horizontal direction is smaller than the areas of the portion where the film 133 is bonded in the lower end portion 132a and the upper end portion 132b. Moreover, the intermediate part 132c is a position which becomes between the lower end part 132a and the upper end part 132b of the case opening part 132 in the up-down direction Z. As shown in FIG. Furthermore, the reinforcing member 212 is provided at a position on the opposite side to the intermediate portion 132c in the film 133 .

According to the second embodiment described above, the following effects can be obtained.

(48) Even when the film 133 is intended to deform toward the side opposite to the ink chamber 137 side, the film 133 can be pressed from the outside of the ink chamber 137 via the reinforcement member 212 . Therefore, it is possible to reduce the possibility that the film 133 falls off from the container case 130 .

(49) The membrane 133 can be pressed from the outside of the ink chamber 137 via the cover 210 , and the reinforcement member 212 can press the membrane 133 , thereby suppressing deformation of the cover 210 .

(50) The rigidity of the cover 210 can be improved by forming the reinforcing rib 211 on the cover 210 . That is, deformation of the cover 210 due to the load applied via the film 133 can be suppressed, and the film 133 can be pressed by the cover 210 .

(51) Since at least a part of the reinforcing rib 211 is formed on the gravity direction side relative to the central position of the ink chamber 137 , the rigidity of the cover 210 can be increased on the gravity direction side where a large load is likely to be applied. Thus, deformation of the cover 210 due to the load applied via the film 133 can be further suppressed.

(52) Since the reinforcing member 212 can be covered by the cover 210 , it can have a better appearance than the case where the reinforcing member 212 is provided outside the cover 210 .

(53) When ink is contained in the ink chamber 137 in a state where the film 133 is in the gravitational direction, a large load is applied toward the gravitational direction side compared with the anti-gravity direction side of the ink chamber 137, and therefore, for the film 133, it is opposite to the gravitational direction side. The portion on the side in the direction of gravity is also more likely to deform than the portion on the side in the direction of gravity. In this regard, since the reinforcement member 212 is located closer to the gravity direction side than the central position of the ink chamber 137 , the easily deformable portion of the film 133 can be pressed from the outside while suppressing enlargement of the reinforcement member.

(54) By forming the partition wall 150 , it is possible to increase the area of the portion where the container case 130 and the film 133 are bonded. That is, it is possible to further strengthen the bonded state between the container case 130 and the film 133 . Furthermore, since the reinforcing member 212 presses the film 133 at the position where the partition wall 150 and the film 133 are bonded, the possibility of the film 133 coming off from the partition wall 150 can be reduced.

(55) In the liquid container 21 into which ink can be injected, the force of injecting ink from the injection port 73 is applied to the membrane 133 , and a large load is easily applied to the membrane 133 constituting the first ink chamber 151 . In this regard, the ink chamber 137 is divided into the first ink chamber 151 and the second ink chamber 152, and a part of the reinforcing member 212 (in FIG. ), with which the film 133 constituting the first ink chamber 151 can be pressed.

(56) The portion where the film 133 and the container case 130 are adhered has a small area and is easy to fall off. In this regard, the reinforcement member 212 presses the film 133 at the small intermediate portion 132c of the portion where the film 133 and the container case 130 are bonded. Thus, the possibility of the film 133 coming off can be further reduced.

(57) By setting the size of the reinforcement member 212 so that it can press a part of the membrane 133 , it is possible to reduce the weight of the liquid storage container 21 compared to a reinforcement member that can press the entire surface of the membrane 133 .

In addition, the above-mentioned embodiment can also be changed into the following other embodiment.

In each of the above-mentioned embodiments, as shown in FIG. 33 , the flow path opening may be directly blocked by the downward displacement of the floating member 215 that is displaced in the vertical direction Z according to the amount of ink accommodated in the ink chamber 137. 162 float valve 216 (first modification). That is, the float valve 216 has a bottomed cylindrical float member 215 and a restricting case 217 arranged to surround the float member 215 . Further, the floating member 215 has a gas chamber 219 formed by closing an opening formed above with the thin film member 218 . In addition, protrusions 220 protruding in the front-rear direction Y are respectively formed on the lower portions of the front and rear side surfaces of the floating member 215, and a plugging portion of a shape capable of blocking the flow path opening 162 protrudes vertically downward from the center position of the lower surface. 221. In addition, the restricting case 217 is formed in a cylindrical shape in which the floating member 215 can be inserted and removed from below, and a long guide groove 222 for guiding the protrusion 220 on the floating member 215 side is formed in the vertical direction Z. Therefore, the floating member 215 descends as the remaining amount of ink in the ink chamber 137 decreases, and when the remaining amount of ink is less than the threshold remaining amount, the blocking portion 221 blocks the flow path opening 162 formed at the lower position of the floating member 215. . Furthermore, preferably, the blocking portion 221 is formed or coated with an elastic member. In addition, the blocking part 221 can also block the midway position of the connecting flow path part 164 .

- In each of the above-described embodiments, as shown in FIGS. 34 and 35 , a float valve 224 in which a float member 223 swings around a fulcrum may be formed (second modified example). That is, in the floating member 223 , the support shaft 226 is formed on one end side of the arm portion 225 , and the gas chamber 228 whose opening is blocked by the film member 227 is formed on the other end side. In addition, between the support shaft 226 and the gas chamber 228 , a blocking member 229 that is pivotally supported by the arm portion 225 to displace in the vertical direction Z and that can block the flow path opening 162 is housed in a support case 230 that supports the floating member 223 . Inside. Therefore, as shown in FIG. 34 , when the remaining amount of ink in the ink chamber 137 is large, the floating member 223 and the closing member 229 are located at an upper position away from the bottom surface 152 a. Then, as shown in FIG. 35 , when the ink chamber 137 descends with the amount of ink remaining in the ink chamber 137 decreasing, the closing member 229 descends together with the floating member 223 to block the flow path opening 162 . In addition, the blocking member 229 may block the midway position of the connecting flow path portion 164 .

In the above-mentioned second modified example, as shown in FIG. 36 , a first spring 231 that biases the arm portion 225 upward and a second spring 232 that biases the blocking member 229 downward may be provided (third modified example ). That is, when the remaining amount of ink in the ink chamber 137 decreases, the weight of the floating member 223 is applied to the blocking member 229 via the arm portion 225 . Therefore, when the remaining amount of ink in the ink chamber 137 decreases and the sum of the weight of the floating member 223 and the biasing force of the second spring 232 becomes greater than the sum of the buoyancy applied to the floating member 223 and the biasing force of the first spring 231 , the blocking member 229 moves toward the blocking position for blocking the flow path opening 162 . That is, by providing the first spring 231 and the second spring 232, the flow path opening 162 can be quickly closed.

· In the above-mentioned second modified example, a spring for biasing the closing member 229 upward may be provided between the closing member 229 and the bottom surface 152a. By providing the spring, when the weight of the floating member 223 becomes greater than the sum of the buoyancy force applied to the floating member 223 and the biasing force of the spring, the blocking member 229 moves to the blocking position for blocking the flow path opening 162 . That is, by providing a spring, the flow path opening 162 can be quickly blocked.

· In each of the above-mentioned embodiments, as shown in FIG. 37 , an eaves-shaped rib portion 235 as an example of an adhesive rib portion may be formed in the second ink chamber 152 (fourth modified example). The eaves-shaped rib portion 235 is formed as an upward slope rising from the lower side of the wall communicating opening 155 formed in the partition wall 150 toward the inside of the second ink chamber 152 . In addition, the eave-shaped rib portion 235 is perpendicular to the side wall 130 b of the container case 130 , and is integrally formed with the container case 130 so as to protrude from the side wall 130 b toward the case opening 132 side. In addition, the width of the eaves-shaped rib 235 in the left-right direction X is approximately equal to the width from the side wall 130 b of the container case 130 to the case opening 132 , and the film 133 is also bonded to the eaves-shaped rib 235 . Furthermore, by providing the eaves-shaped rib portion 235 , it is possible to further suppress the entry of foreign matter from the first ink chamber 151 to the second ink chamber 152 . In addition, it is preferable to form the lower end of the eaves-shaped rib portion 235 so as to coincide with the lower surface 155 a of the wall communication opening 155 . By aligning the eaves-shaped rib 235 with the lower surface 155a, it is possible to reduce the possibility of accumulation of foreign matter between the partition wall 150 and the eaves-shaped rib 235 . In addition, the width of the eaves-shaped rib 235 in the left-right direction X may be larger than the width from the side wall 130 b of the container case 130 to the case opening 132 , and the film 133 may not be bonded to the eaves-shaped rib 235 .

- In each of the above-mentioned embodiments, as shown in FIG. 37 , the flow path opening 162 may be formed so as to protrude from the bottom surface 152 a (fifth modified example). That is, the cylindrical part 236 in which the through-hole 162a is formed may be provided in the bottom surface 152a. In addition, a stepped portion protruding from the bottom surface 152a may be formed, and the through hole 162a may be formed in the stepped portion. Furthermore, it is not necessary to surround the periphery of the flow path opening 162 , and a protruding portion protruding from the bottom surface 152 a may be formed at a position along the periphery of the flow path opening 162 , for example, along the left-right direction X. The entry of foreign matter into the flow path opening 162 can be suppressed by providing the cylindrical portion 236 , the stepped portion, and the protruding portion. In addition, it is preferable that when forming the protruding portion, the width in the left-right direction X is formed to be shorter than the width from the side wall 130b of the container case 130 to the case opening 132, or a width connecting the front-rear direction Y is formed. Connecting holes or slots on both sides.

In each of the above-mentioned embodiments, as shown in FIGS. 38 and 39 , two or more recesses 168 a communicating with the second ink chamber 152 as an example of the liquid storage chamber may be formed in the first channel (in FIG. 38 are two) of the first through hole 162a and the second through hole 238 (sixth modification). That is, the through holes 162a, 238 are formed in the bottom surface 152a, one end of which is opened to the second ink chamber 152, and the other end is opened to the first connection flow path portion 164a serving as the filter 166. An example of a flow path on the side of the second ink chamber 152 in the ink flow direction. Therefore, the first through hole 162 a and the second through hole 238 respectively communicate with the first connecting flow path portion 164 a and communicate the second ink chamber 152 with the first connecting flow path portion 164 a. In addition, the first through hole 162 a is formed at a position closer to the injection port 73 than the second through hole 238 in the ink flow direction.

As shown in FIG. 38 , the through holes 162 a and 238 are formed so as to sandwich the filter 166 in the front-back direction Y intersecting (orthogonal in FIG. 38 ) the direction of gravity. In addition, it is preferable that the through holes 162a and 238 are formed at positions that are diagonal to each other in the substantially rectangular first channel forming recess 168a viewed from the bottom surface. In addition, the through-holes 162a and 238 may be formed so as to sandwich the filter 166 in the horizontal direction X.

In addition, as shown in FIG. 39 , preferably, on the bottom surface 152 a of the second ink chamber 152 , the second cylindrical portion 239 is provided along the vertical direction Z intersecting the horizontal direction (orthogonal in FIG. 38 ). The cylindrical portion 239 is an example of a cylindrical portion in which the second through hole 238 is formed. Moreover, preferably, the height in the vertical direction Z of the second cylindrical portion 239 formed with the second through hole 238 is higher than the first cylindrical portion 236 or the first through hole 162a formed with the first through hole 162a, and the second cylindrical portion The upper opening 240 of the opening 239 is located above the flow path opening 162 or the first through hole 162a.

Furthermore, as shown in FIG. 39 , preferably, a protruding portion 241 protruding upward from the bottom surface 152 a is provided at a position between the first through hole 162 a and the second through hole 238 . The protruding portion 241 is formed to extend in the left-right direction X, and has a height in the vertical direction Z that is higher than that of the first cylindrical portion 236 and lower than that of the second cylindrical portion 239 . In addition, preferably, when the viscosity of the ink is 1.05 g/cm ³ and the surface tension is 27.6 mN/m, the inner diameter of the second through hole 238 or the opening portion 240 is 6 mm or more.

Furthermore, it is preferable that the opening of the first through hole 162a on the side of the first connecting flow path portion 164a and the opening of the second through hole 238 on the side of the first connecting flow path portion 164a be located at the same height as the filter 166 or at a higher level than that of the filter 166 . 166 near the top (anti-gravity direction side) position. That is, as shown in FIG. 39 , when the filter 166 is positioned above the flow path forming film 171 , it is preferable that the flow path forming film is smaller than the distance between the flow path forming film 171 and the filter 166 . 171 and the through-holes 162a, 238 have a large interval. In addition, the positions of the openings of the through holes 162 a and 238 on the side of the first channel forming recess 168 a are different from each other in the vertical direction Z.

However, the ink chamber 137 and the connecting flow path portion 164 are also filled with air in the initial state where no ink is contained in the ink chamber 137 . Therefore, for example, when only one through hole 162a is formed in the first flow path forming recess 168a, air cannot pass through the filter 166 and stay in the first connection flow path portion 164a, thereby obstructing the flow of ink.

However, in the case of the sixth modified example, the following effects can be obtained.

(58) Since the two through-holes 162a and 238 are formed in the first channel forming recess 168a, when ink flows in from one side, air can be discharged from the other side. In addition, since the through-holes 162a and 238 are formed, the injected ink first flows into the first connecting flow-path portion 164a through the first through-hole 162a from the flow-path opening 162 formed at a lower position. At this time, ink does not flow in from the second through hole 238 located above the flow path opening 162 in the opening portion 240 , and the air in the first connecting flow path portion 164 a is discharged to the second ink chamber 152 through the second through hole 238 . Therefore, it is possible to reduce air stagnation in the first connection flow path portion 164a, and it is possible to reduce the possibility of air accumulation in the filter 166 provided in the first connection flow path portion 164a.

(59) Since the second cylindrical portion 239 is provided, the entire buoyancy force of the air (air bubbles) in the volume of the second cylindrical portion 239 is applied in the air discharge direction (the second ink chamber 152 side), and the air can be efficiently discharged.

(60) Since the two through-holes 162a and 238 are separated from each other with the filter 166 interposed therebetween, the flow of ink flowing from the first through-hole 162a into the first connecting flow path portion 164a can flow from the second through-hole 238 Efficiently removes air.

(61) The inflow of ink into one of the two through holes 162 a and 238 can be blocked by the protruding portion 241 . That is, although ink flows into the first connection flow path portion 164a from the first through hole 162a, a state where ink does not flow into the first connection flow path portion 164a from the second through hole 238 can be realized. As a result, air can be efficiently discharged by utilizing the resulting pressure difference between the first through hole 162 a and the second through hole 238 .

(62) Make the openings of the first through hole 162a and the second through hole 238 close to the first connection flow path portion 164a side have the same height as or higher than the height at which the filter 166 is installed, so that the air can easily move to a position that is relatively The through holes 162a, 238 at the high position of the filter 166 . Accordingly, it is possible to suppress air stagnation directly under the filter 166 .

(63) In the case where the viscosity of the ink is 1.05g/cm ³ and the surface tension is 27.6mN/m, the inner diameter of the second through hole 238 or the opening 240 is 6mm or more, so even if the second through hole 238 or the opening Even when the portion 240 is clogged with ink, air can be discharged by buoyancy.

(64) In the vertical direction Z, the heights of the cylindrical parts 236 and 239 may be set to be the same. That is, the flow path opening 162 and the opening portion 240 may be formed at the same position in the vertical direction Z. In addition, the cylindrical parts 236 and 239 may not be formed. Even in this case, the injected ink first flows into the first connection channel portion 164 a through the first through hole 162 a formed at a position close to the injection port 73 . At this time, ink does not flow in from the second through hole 238 located farther from the injection port 73 than the first through hole 162a, and the air in the first connecting flow path portion 164a flows toward the second ink chamber 152 through the second through hole 238. discharge. Therefore, it is possible to reduce the air stagnant in the first connection flow path portion 164a.

(65) After the initial filling, the ink flows into the first connection channel portion 164 a from the first through hole 162 a and the second through hole 238 . Therefore, it is possible to increase the inflow speed of the ink into the first connecting flow path portion 164a. Also, even if either one of the first through hole 162a or the second through hole 238 is clogged with a foreign substance or the like, ink can flow in from the other.

· In each of the above-mentioned embodiments, as shown in FIG. 40 , an annular member (nozzle) 242 (seventh modification). In addition, the annular member 242 may be provided so as to sandwich the film from the outside in a state divided into two. That is, a film may be attached to the inner surface of the annular member 242 to make the injection port 127 rigid. In addition, by thickening the film of the part of the injection port 127, it is also possible to make it more rigid than other parts.

· In each of the above-mentioned embodiments, as shown in FIG. 40 , a notch 244 may be formed at an arbitrary position in the corner portion 243 forming the injection port 127 of the liquid injection source 126 . For example, when the side where the injection port 127 is formed is the upper side, the notch 244 can be provided such that the distance L8 from the upper end of the injection port 127 to the ink container 245 is longer than the distance L9 from the lower end to the ink container 245. . That is, the user can inject the ink accommodated in the ink storage portion 245 from the injection port 127 by cutting the corner portion 243 along the notch 244 . In addition, the incision line may be marked without forming the incision 244 .

· In each of the above-mentioned embodiments, as shown in FIG. 41 , the liquid injection source 126 may be formed so as to intersect the annular member 242 with the notch 244 (eighth modified example). That is, when the user cuts off the corner portion 243 along the notch 244 , the ring member 242 may also be exposed to the outside. In addition, a grip portion 247 into which a user can insert a finger or a hand may be formed on the liquid injection source 126 .

· In each of the above embodiments, as shown in FIG. 42 , the liquid injection source 126 may be provided with an annular member 242 protruding from the film, and a thread may be formed on the protruding part of the film (ninth modification). Furthermore, the injection port 127 is closed by the cap 248 which can be screwed into the annular member 242 .

- In the said ninth modification, as shown in FIG. 43, the straw member 249 which can be screwed with the ring-shaped member 242 may be provided (10th modification). In addition, the suction pipe member 249 may be straight or may have a corrugated portion 250 as shown in FIG. 43 so as to be bendable. In addition, the corrugated part 250 may be formed in the whole straw member 249.

· In each of the above-mentioned embodiments, as shown in FIG. 44 , ink may be injected from the liquid injection source 126 into the liquid container 21 via the funnel member 251 (an eleventh modified example).

- In each of the above-mentioned embodiments, the notch part 199 may be formed in the funnel member 251 .

- In each of the above-mentioned embodiments, as shown in FIG. 45 , a filter member 252 may be provided in the annular member 242 (a twelfth modification). The shape of the filter member 252 is not limited to a disc shape but may be any shape. For example, it may be cylindrical or conical. In addition, when the opening shape of the ring member 242 is not a circle but a polygon such as a triangle or a quadrangle, the shape of the filter member 252 may be formed in a polygonal shape matching the shape of the ring member 242 . In addition, two or more filter members 252 may be provided, and the filter member 252 may be provided on the funnel member 251 .

- In the above-mentioned second embodiment, the reinforcing member 212 may be formed in a size capable of pressing the entire surface of the film 133 . In addition, the reinforcing member 212 may be formed in any size in the front-rear direction Y and the up-down direction Z, or may be formed in a square shape when viewed from the side. In addition, two or more reinforcement members 212 may be provided, and may be provided at any positions. For example, it may be provided on the opposite side of the lower end portion 132 a or the upper end portion 132 b of the film 133 , or on the opposite side of the film 133 to the side closer to the second ink chamber 152 . In addition, the reinforcing member 212 may be provided at a position on the opposite side of the intersecting ribs 157 a to 157 i or the third and fourth lateral ribs 158 c and 158 c in the film 133 . In this case, the intersecting ribs 157a to 157i, the third laterally inclined rib 158c, and the fourth laterally inclined rib 158d function as an example of the bonding rib.

- In the second embodiment described above, the reinforcing member 212 may be provided outside the cover 210 . In addition, the reinforcing member 212 may be fixed to the film 133 or the cover 210 by adhesion, screw fastening, or the like.

- In the above-mentioned second embodiment, the reinforcing member 212 may be a rod. Alternatively, the membrane 133 may be pressed by winding a tape or string around the container case 130 .

- In the said 2nd Embodiment, the cover 210 does not need to form the reinforcing rib 211. In addition, the direction in which the reinforcing ribs 211 extend, the size of the reinforcing ribs 211 , and the position where the reinforcing ribs 211 are formed can be changed arbitrarily.

- In each of the above-mentioned embodiments, the cover 134 and 210 may not be provided.

- In each of the above-mentioned embodiments, the configuration in which the injection port 73 is not provided may be employed.

In each of the above-mentioned embodiments, the chip holder 76 can also be inserted into the slider 34 from a direction along the sliding direction of the slider 34 with respect to the liquid container 33 , that is, a direction along the longitudinal direction. slider34. In addition, the recording chip 75 mounted on the chip holder 76 does not necessarily have to be in a state inclined with respect to the sliding direction of the slider 34, and may be placed on the chip holder in a state parallel to or perpendicular to the sliding direction, for example. 76.

In each of the above-mentioned embodiments, when the moving part of the slider 34 moves into the printer 11, the groove-shaped part 107, which is an example of the positioning shaped part positioned in the printer 11, is not necessarily provided on the chip holder 76. . For example, when the slider 34 is inserted into the fitting portion 31 in a state of being positioned relative to the communication portion 77 , the positioning shape portion is not required.

- In each of the above-described embodiments, the slider 34 does not necessarily have to provide an engaging portion (groove portion 112 ) that engages with the opening and closing cover 74 . For example, when the bearing portion 90 of the opening and closing cover 74 is engaged with the rotating shaft 89 of the slider 34 in a state of interference fit, the rotational load is obtained by the interference fit, so the engagement portion is unnecessary. .

- In each of the above-described embodiments, the opening-closing cover 74 does not necessarily have to be configured to rotate around an axis extending in the short-side direction of the liquid container 33 as a rotation center. For example, a structure may be employed in which the slider 34 moves parallel to the longitudinal direction to be displaced from the lid closing position to the lid opening position.

- In each of the above-mentioned embodiments, the opening and closing cover 74 does not necessarily have to be provided on the slider 34 provided in a state covering the injection port 73 . In this case, it is only necessary to expose the ink inlet 73 by pulling out the slider 34 from the printer 11 (attachment portion 31 ).

· In each of the above-mentioned embodiments, it is not necessary to provide the injection port 73 on the upper surface 39 of the liquid container 33 on the side against the direction of gravity. For example, it may be provided on the side surface located on the horizontal direction side. In addition, it is not necessary to install the slider 34 in a state covering the injection port 73 . In this case, the injection port 73 may be covered with a member different from the slider 34 .

- In each of the above-described embodiments, the chip holder 76 is not necessarily limited to the structure attached to the holder mounting portion 86 of the slider 34 . For example, a structure in which the chip holder 76 is integrally formed on a part of the slider 34 may also be adopted.

- In each of the above-described embodiments, the medium is not limited to the paper S, and may be a plate-shaped member made of a metal plate, a resin plate, cloth, or the like. That is, any member can be used as a medium as long as it can record (print) with the liquid ejected from the liquid ejecting head 24 .

In each of the above-mentioned embodiments, the liquid consuming device is not limited to the serial printer 11 in which the liquid ejection head 24 reciprocates along with the carriage 25 , and the maximum width of the paper may be determined while the liquid ejection head 24 is fixed. A range of line scan head printers for printing.

- In each of the above-mentioned embodiments, the covering member 121 only needs to include at least the covering body 120 .

- In each of the above-described embodiments, an absorber capable of absorbing ink may be disposed on the back surface 74 a of the openable cover 74 .

- In each of the above-mentioned embodiments, the connecting portion 125 may be formed in a shape that is folded multiple times on the liquid receiving surface 116 . For example, the connecting portion 125 may be formed in an L-shape in plan view by bending only one part of the connecting portion 125 . In addition, the connecting portion 125 may be formed of a metal lock or the like and provided on the liquid receiving surface 116 .

- In each of the above-mentioned embodiments, the back surface 74a of the opening and closing cover 74 does not have to be a surface inclined downward toward the injection port 73 when the opening and closing cover 74 is located at the cover opening position. In this case, it is desirable to arrange the above-mentioned ink absorbing material on the rear surface 74 a of the opening and closing cover 74 at the portion where the covering body 120 is placed.

- In each of the above-mentioned embodiments, the covering body 120 of the covering member 121 does not need to be placed on the back surface 74 a of the opening and closing cover 74 .

- In each of the above-described embodiments, the notch groove 118 may be provided at a peripheral position of the injection port 73 other than the peripheral wall portion 117 . For example, it may be formed on the opening edge 73 a of the injection port 73 . In addition, instead of the notch groove 118 as the concave portion, a convex portion protruding upward from the peripheral wall portion 117 may be provided. In this case, it is desirable to provide two protrusions to position the liquid injection source 126 from both sides.

- In each of the above-described embodiments, the area of the wall communication opening 155 may be set to be the same size as the area of the injection port 73 . In addition, the area of the wall communication opening 155 may be set larger than the area of the injection port 73 .

- In each of the above-mentioned embodiments, the filter 166 may be provided. In addition, the filter 166 may be provided in the second ink chamber 152 so as to cover the flow path opening 162 .

- In each of the above-described embodiments, a configuration not including the float float valve 131 may be employed.

- Also in each of the above-mentioned embodiments, the lateral oblique rib portions 158a to 158d are not provided. Moreover, it may be set as the structure which provided the horizontal oblique rib part 158a-158d independently, and which horizontal oblique rib part 158a-158d is provided can be arbitrarily selected. For example, only one of the laterally inclined rib portions 158a to 158d may be provided. In addition, for example, it is also formed that any two horizontal rib portions are provided like the third horizontal oblique rib portion 158c and the fourth horizontal oblique rib portion 158d, or any three horizontal rib portions are provided like the first to third horizontal rib portions 158a to 158c. The structure of a transverse oblique rib.

- In each of the above-mentioned embodiments, the laterally inclined ribs 158a to 158d may not only extend in one direction, but may also be partially curved or bent. That is, for example, the lateral oblique ribs 158a to 158d may have both a portion extending in the gravitational direction and a portion intersecting the gravitational direction.

- In each of the above-mentioned embodiments, the third horizontally inclined rib portion 158c and the fourth horizontally inclined rib portion 158d may not be line-symmetrical. That is, for example, the third lateral oblique rib portion 158c and the fourth lateral oblique rib portion 158d may be formed so as to be shifted by one in the vertical direction Z. In addition, the axis line serving as the reference line of line symmetry between the third lateral oblique rib portion 158c and the fourth lateral oblique rib portion 158d may pass through the float valve 131 at any position as long as it is in the direction of gravity. Furthermore, the third lateral oblique rib portion 158c and the fourth lateral oblique rib portion 158d may be partly symmetrical with respect to the axis as a reference line.

- In each of the above-described embodiments, the laterally inclined rib portions 158a to 158d may be formed to extend in the front-rear direction Y. In addition, the lateral oblique rib portions 158a to 158d are also formed to extend in a direction intersecting with the left-right direction X. As shown in FIG.

- In each of the above-mentioned embodiments, the transversely inclined rib portions 158 a to 158 d may be provided so as to be shifted from the flow path opening 162 in the up-down direction Z. FIG.

- In each of the above-mentioned embodiments, the channel opening 162 may be formed at a position other than the bottom surface 152a. For example, a flow path opening may be formed in the side wall 130b. In addition, the flow path opening 162 may be formed at a position separated from the partition wall 150 . That is, the distance L1 may be longer than the distance L2.

- In each of the above-described embodiments, the bottom surface 153 may have a configuration in which the recessed portion 154 is not provided. In addition, the concave portion 154 may be formed so as to be depressed in a direction intersecting with the gravitational direction. In addition, the concave portion 154 may be formed so as to coincide with the injection imaginary line M. As shown in FIG. That is, the concave portion 154 may be formed at a position closer to the gravitational direction side of the injection port 73 . In addition, the shapes of the concave portion 154 and the injection port 73 in plan view are different, and the size of the concave portion 154 is larger than that of the injection port 73 in the horizontal direction X. Therefore, even if the concave portion 154 is formed on the side of the injection port 73 in the direction of gravity, a part of the concave portion 154 is located at a position shifted from the injection port 73 in a direction intersecting with the direction of gravity. Therefore, the concave portion 154 may be formed smaller than the injection port 73 in plan view, and the injection port 73 and the concave portion 154 may also be formed in the same shape.

- In each of the above-described embodiments, the liquid storage container 21 may be configured without the slider 34 . That is, the liquid storage container 21 may be constituted by only the liquid storage body 33 .

- In each of the above-mentioned embodiments, the partition wall 150 may be provided so as to cross the vertical direction Z.

- In each of the above-mentioned embodiments, the container case 130 may be configured without the intersecting rib portions 157a to 157i.

- In each of the above-mentioned embodiments, the container case 130 may be configured without the partition wall 150 .

- In each of the above-mentioned embodiments, the upper surface 155c of the wall communication opening 155 may be formed along the horizontal direction.

- In each of the above-described embodiments, the cross-sectional area of the inclined flow path portion 165 may be formed to be the same size as the cross-sectional area of the connecting flow path portion 164 . In addition, the area of the inclined flow path portion 165 may be formed larger than the cross-sectional area of the curved flow path portion 163 . In addition, the cross-sectional area of the inclined flow path portion 165 may be formed larger than the cross-sectional area of the connecting flow path portion 164 and the cross-sectional area of the curved flow path portion 163 .

- In each of the above-described embodiments, the inclined flow path portion 165 may be provided at a position deviated from the position on the lower side of the ink chamber 137 in the direction of gravity. That is, for example, the inclined flow path portion 165 may be provided so as to be adjacent to the ink chamber 137 via the side wall 130b.

In each of the above-mentioned embodiments, the valve body 182 fixed to the bottom surface 152a of the second ink chamber 152 may be omitted, and the pressing portion 189 protruding vertically downward from the bottom surface of the floating member 181 functions as a The function of the spool that can block the valve port 192.

- In each of the above-mentioned embodiments, the cross-sectional shape of the plate-shaped portion 191 functioning as an example of a regulating contact portion with respect to the regulating housing 183 in the floating member 181 may be a shape other than the cross shape. In short, as long as the distance between the portion constituting the restricting contact portion and the inner surface of the cylindrical portion 198 is smaller than the distance between the film member 186 and the inner surface of the annular wall portion 196, its shape can be changed arbitrarily. .

· In each of the above-mentioned embodiments, the shape of the through hole 202 in the limiting housing 183 is not limited to a rectangular shape, and may be a circular, triangular, or notched shape. In short, the shape can be changed arbitrarily as long as it allows ink to flow when the floating member 181 floats.

- In each of the above-described embodiments, the notch portion 199 formed on the side wall 196 a along the front-rear direction Y of the restriction case 183 may be omitted. Alternatively, the notch 199 may also be formed on the side wall 196b along the left-right direction X. As shown in FIG. Even in this case, the notch portion 199 can function to reduce the possibility of slippage when the floating member 181 floats, in addition to allowing the flow of ink by communicating the inside and outside of the restricting case 183 .

- In each of the above-described embodiments, the spool 182 having the second urging force that urges the spool 182 toward the upper valve opening position may be omitted.

- In each of the above-mentioned embodiments, it is preferable that the floating member 181 has at least one gas chamber 187 . That is, the number of the gas chambers 187 is not necessarily limited to four, and may be at least one of two, three, five, or the like.

- In each of the above-described embodiments, the partition wall 150 that partitions the ink chamber 137 into the first ink chamber 151 and the second ink chamber 152 may not be required. That is, there may be only one ink chamber 137 of the liquid container 33 , and the floating valve 131 may be arranged in one ink chamber 137 .

· In each of the above-mentioned embodiments, the shape of the restricting case 183 is not limited to the box shape, as long as the floating member 181 is protected from the inflow pressure of the ink flowing into the second ink chamber 152, the floating member 181 can be surrounded. The shape of the restricting case 183 can be changed arbitrarily.

- In each of the above-mentioned embodiments, the restricting member may not have a box shape like the restricting case 183 but may have a frame shape. In short, when the floating member 181 floats upward with the rise of the liquid level of the ink, it is limited by abutting against the top of the ink chamber 137 so as to stop the upward floating. structure, the shape of the restricting member can be changed arbitrarily.

- In each of the above embodiments, the thin film member 186 that closes the opening 185a of the floating member 181 to form the gas chamber 187 may be, for example, a thin resin sheet or plate other than a film.

In each of the above-mentioned embodiments, as the posture state when the liquid storage container 21 is used, other than the state where the liquid storage container 21 is attached to the attachment portion 31 of the printer 11 and fixed immovably with respect to the printer 11, it may be on-board. It is a use state in which the printer 11 is placed on the side of the printer 11 and connected so that liquid can be supplied through a hose.

- In each of the above-described embodiments, the liquid storage container and the liquid injection source have been described, but both may be expressed together as a liquid container.

- In each of the above-described embodiments, the liquid consuming device may be a liquid ejecting device that ejects or ejects liquid other than ink. In addition, the state of the liquid ejected from the liquid ejecting device as a minute amount of liquid droplets includes a granular shape, a tear shape, and a linear shape with an elongated tail. The liquid mentioned here may be any material that can be ejected by a liquid ejecting device. For example, as long as the state of the substance is in the liquid phase, it includes high or low viscosity liquid, sol, gel water, other inorganic solvents, organic solvents, solutions, liquid resin, liquid metal (melt metal) flow state. Furthermore, not only a liquid which is one state of a substance but also a liquid in which particles of functional materials such as pigments or metal particles are dissolved, dispersed, or mixed in a solvent is included. Moreover, as a representative example of a liquid, the ink, liquid crystal, etc. which were demonstrated in the said embodiment are mentioned. Here, the ink refers to general water-based ink, oil-based ink, gel ink, hot-melt ink, and other inks including various liquid compositions. As a specific example of a liquid ejection device, for example, it may contain electrode materials, color materials, etc. used in the manufacture of liquid crystal displays, EL (electroluminescence) displays, surface emission displays, color filters, etc. in the form of ejection, diffusion or dissolution. A liquid ejection device for a liquid of the material. In addition, it may be a liquid ejection device that ejects living organisms used in biochip production, a liquid ejection device that ejects liquid as a sample used as a precision pipette, a printing device, a microdispenser, and the like. Furthermore, it may also be a liquid injection device that injects lubricating oil into dotted holes for precision machinery such as watches and cameras, and ultraviolet curable resins used to form micro hemispherical lenses (optical lenses) used in optical communication devices, etc., may be transparent. A liquid ejection device that ejects resin liquid onto a substrate. In addition, it may be a liquid ejecting device that ejects an etching solution such as acid or alkali to etch a substrate or the like.

Explanation of reference signs:

21: liquid storage container; 73: injection port; 130: container body casing; 132: casing opening; 132a: lower end; 132b: upper end; 132c: middle portion; 133: membrane; 134, 210: cover; 137: ink chamber (an example of a liquid storage chamber); 150: a partition wall (an example of an adhesive rib); 150a: an adhesive surface; 151: a first ink chamber (an example of a first liquid storage chamber); 152: a second Ink chamber (an example of a liquid storage chamber, an example of a second liquid storage chamber); 152a: bottom surface; 162a: first through hole; 164a: first connection channel portion (an example of a flow channel); 166: filter; 210a : opposing surface; 211: reinforcing rib; 212: reinforcing member; 238: second through hole; 239: second cylindrical portion (cylindrical portion); 241: protruding portion.

Claims (9)

1. a liquid housing container, it is characterised in that possess:

Containing body housing, described containing body housing has shell nozzle portion；

Film, described film is adhered to described containing body housing in the way of covering described shell nozzle portion, The liquid containment chamber that can accommodate liquid is formed between described film and described containing body housing；And

Reinforcing member, described reinforcing member is in the position with opposition side, described liquid containment chamber side of described film Put the face setting along described film in the way of this film can be suppressed to deform towards described opposition side,

Described reinforcing member covers a part for the lower section of the gravity direction of described film.

2. liquid housing container as claimed in claim 1, it is characterised in that

Described liquid housing container is also equipped with covering the cover in described shell nozzle portion across described film.

3. liquid housing container as claimed in claim 2, it is characterised in that

The enhancing raised line extended along the opposed faces opposed with described film it is formed with at described cover.

4. liquid housing container as claimed in claim 3, it is characterised in that

Being formed at least partially of described enhancing raised line compare described liquid containment chamber along gravity direction The middle position in direction by the position of gravity direction side.

5. the liquid housing container as according to any one of claim 2 to 4, it is characterised in that

Described reinforcing member is arranged between described film and described cover.

6. the liquid housing container as according to any one of Claims 1-4, it is characterised in that

At described film along in the case of the state of gravity direction, described reinforcing member is arranged to: at least one Part is positioned at the middle position in the direction along gravity direction comparing described liquid containment chamber by gravity direction The position of side.

7. the liquid housing container as according to any one of Claims 1-4, it is characterised in that

Bonding multiple viscous of described film it is formed in the described liquid containing indoor of described containing body housing Rib bar,

Described reinforcing member is arranged at opposed with the bonding plane bonding for described film of described bonding rib Region.

8. the liquid housing container as according to any one of Claims 1-4, it is characterised in that

Described liquid containment chamber is also equipped with:

First liquid accommodating chamber, is formed with the injection that can inject liquid at described first liquid accommodating chamber Mouthful；And

Second liquid accommodating chamber, described second liquid accommodating chamber is accommodated with this first liquid by spaced walls Interventricular septum is opened,

Described reinforcing member is that be arranged to remain at least partially within described film with described first liquid accommodating chamber The position of opposition side, side.

9. the liquid housing container as according to any one of Claims 1-4, it is characterised in that

In the bottom of gravity direction side in described shell nozzle portion for the area of the bonding part of described film Ratio pars intermedia between the upper end and described bottom of side, antigravity direction supplies the portion that described film is bonding The area divided is big,

Described reinforcing member be arranged to remain at least partially within described film with opposition side, described pars intermedia side Position.