CN207984332U - Ink compensation tank - Google Patents

Abstract

The utility model provides an ink supply container capable of suppressing ink leakage caused by poor sealing when the ink is filled into the container. The ink supply container (15) is an ink supply container that is filled with ink, and the cap (100) is attached to the bore portion (180) of the container body (170) for sealing, and has elasticity and is locked to the cap ( 100) the disc-shaped fitting sealing gasket (130) of the top plate lower surface, the disc-shaped fitting sealing gasket (130) is equipped with: the outside fitting ring that is arranged on the outer peripheral edge portion of the top plate lower surface of the bottle cap (100) (131) and the inside fitting ring (132) that is arranged parallel to the inside of the outside fitting ring (131), in the inner peripheral edge portion of the upper port portion of the bore portion (180), have a tapered surface ( 181).

Description

ink supply container

technical field

The utility model relates to an ink supply container.

Background technique

Conventionally, an inkjet printer capable of printing with ink on a recording medium such as recording paper by ejecting ink from a recording head toward a recording medium such as recording paper is known as an example of an inkjet device. Such an inkjet printer has a printer in which a user can replenish ink to an ink tank storing ink supplied to a recording head. As a bottle (ink supply container) suitable for injecting ink into an ink tank, Patent Document 1 discloses that a bottle cap having a common shape is provided for bottles with different ink storage capacities, thereby diversifying the bottles. .

(1) In the past, in order to aseptically fill the contents, for example, PET bottles (bottles using polyethylene terephthalate stretch blow molding) were filled with the contents at high temperature and the caps were attached to the When the bore portion is screwed and sealed, the bore portion of the bottle (container body) shrinks when the contents are cooled to room temperature, and liquid leakage may occur during transportation and storage during distribution. Therefore, there is a method of crystallizing the diameter portion of the container body by heat treatment after molding to prevent shrinkage caused by cooling, but this method increases the manufacturing cost, so the following sealing mechanism is adopted: Shrinkage caused by cooling after filling in the aperture portion of the container body is absorbed on the lower surface of the top plate of the bottle cap. The disk-shaped sealing ring includes, for example, a flat sealing ring shown in FIG. The shown sealing ring and the like of the outer ring 142 are fitted to the outer periphery of the diameter portion 180 of the container main body 170 .

(2) With regard to wide-mouth containers that have a relatively large diameter at the mouth of the container so that the contents can be easily taken out and can be resealed (resealed) with a threaded cap, when the liquid contents are filled and sealed In the field of such cans and containers, wide mouth type resealable cans have also been proposed in the past. In such wide mouth type resealable cans, as a threaded bottle cap for sealing the opening, usually, Use the following so-called anti-theft (tamper-proof) bottle caps: in the threaded bottle caps with the function of preventing illegal unsealing known in the past, that is, the threads of the skirt of the bottle caps are formed via a breakable weakened portion. Anti-theft (anti-theft) belt.

On the other hand, in the threaded bottle cap used to resealably seal the opening of the container, in order to ensure the sealing performance between the mouth of the container body and the bottle cap, in the past, it is generally carried out in the top plate of the bottle cap. A gasket for sealing is formed on the surface side. For example, Patent Document 2 discloses that in a metal cap, a separate sealing gasket made of an elastic material such as resin or rubber is attached to the inner surface side of the top plate of the metal cap shell. In addition, Patent Document 3 discloses that, in a resin bottle cap, a part of the sealing gasket is integrally molded on the inner surface side of the top plate portion of the resin bottle cap.

(3) In the past, in order to ensure the safety of circulation and the convenience of use, the following easy-to-separate plug-type plastic bottle caps were used for plastic bottles filled with liquid contents: the cap part was connected to the cap body through a hinge During use, the ring-shaped thin-walled fragile line of the inner blockade plate of the injection tube is broken by the pull ring to open, and when separated and recovered after use, the top plate and the surrounding wall of the bottle cap body are broken by the gripper for separation. The cap is detached from the bottle.

(4) Conventionally, for example, metal bottle caps with gaskets are generally used as bottle caps for sake bottles. Some of them also use plastic bottle caps, but use bottle caps with sealing gaskets.

(5) Patent Document 4 (following) discloses a conventional sealing structure for the mouth of a liquid container with improved airtightness. When the spout with a bottle cap disclosed in Patent Document 4 is installed in a paper container, even if a pressing force is applied to the container body in the state where the spout is unsealed, it is also aimed at preventing the content liquid from flowing from the spout to the container body. Leaks between caps.

The spout with a cap for this paper container is composed of a spout and a cap after injection molding, and the bottle cap screwed to the spout is formed harder than the cylindrical portion forming the spout so that the cylindrical portion The inner diameter of the cylinder is slightly smaller than the outer diameter of the inner ring of the concave portion of the bottle cap, and the wall thickness of the upper end of the cylindrical portion is slightly larger than the width of the gap between the inner ring of the bottle cap and the outer cylinder. That is, for example, a bottle cap made of polypropylene is pressed into the upper end of a cylindrical portion made of polyethylene. Since the bottle cap is formed harder than the cylindrical portion, when the bottle cap is inserted into the cylindrical portion, the cylinder will The upper end side of the part is elastically deformed and enters the inner part of the gap part of the bottle cap, thereby preventing the leakage of the content liquid.

【Prior technical literature】

【Patent Literature】

Patent Document 1: Japanese Patent Laid-Open No. 2014-88207

Patent Document 2: Japanese Patent Application Publication No. 61-80256

Patent Document 3: Japanese Patent Laid-Open No. 8-40447

Patent Document 4: Japanese Patent Application Publication No. 4-37084

(1) In the sealing mechanism in which the disc-shaped sealing ring is fitted on the lower surface of the top plate of the above-mentioned conventional bottle cap, the aperture portion is caused to shrink due to the cooling of the aperture portion of the bottle after the content is filled at a high temperature. When the upper mouth of the bottle is poured inward, if it is a flat sealing ring, the contact surface with the bottle is only the outer peripheral edge of the front end surface of the aperture part of the bottle. If the sealing ring with an inner ring is provided, the contact surface with the bottle It is only the inner peripheral surface of the front end of the bore portion of the bottle. In addition, if an outer ring seal is provided, the outer peripheral surface of the front end of the bore portion of the contacted bottle is far away. In any seal ring, there is the following danger: Liquid leakage from the mouth of the bottle occurs during transportation and storage.

Therefore, there is a demand for a container that prevents liquid leakage from the mouth of the container body during transportation and storage in the distribution process even if the aperture portion of the container body repeats expansion and contraction after the cap is attached.

(2) When filling and sealing a wide-mouth container such as a wide-mouth type resealable can with a liquid content, a space with a predetermined volume is provided between the inner surface of the cap and the liquid surface of the content, The so-called headspace, but when it is desired to increase the height of the headspace, the amount of contents needs to be reduced when the container is the same, and the height of the container needs to be increased when the amount of contents is the same, so it is used redundantly container material, so generally don't make the headspace height too high.

However, when the container sealed by the bottle cap is held by one hand while the other hand turns the bottle cap to start opening the container, since the uncapping torque gradually increases to rotate the bottle cap, when the bottle cap starts to rotate, the cap is opened. The torque decreases, so the reaction caused by the fluctuation of the opening torque causes the container body to become unstable and tilt, thereby causing the liquid level of the contents filled in the container to fluctuate. At this time, if the inner diameter of the mouth is smaller Large wide-mouthed containers, when reducing the height of the headspace when filled with content, in the case of a sufficient gap between the top plate of the bottle cap and the mouth of the container, there is a concern that: The contents of the mouth spill to the outer surface of the mouth. After discussing this point, the developer of the utility model obtained the following insights: If the relationship between the opening area D of the container shown in Figure 14 and the height H of the head space is used, when (D/2) 2 When the value of /H is 15 or more, overflow tends to occur.

In particular, in the case of using an anti-theft cap with the function of preventing illegal opening, when the container is unsealed, when the container body is held and the cap is rotated in the opening direction, the weakened portion between the skirt and the anti-theft band will (Multiple weakened portions formed between a plurality of slits formed in the circumferential direction) are sequentially fractured in the circumferential direction as the cap rotates, but the cap opening torque gradually increases until the initial fracture of such a weakened portion occurs , since the opening torque suddenly decreases after the initial fracture occurs, the reaction caused by the drastic fluctuation of the opening torque causes the container body to become unstable, and the contents filled in the container The liquid level of the container fluctuates greatly, so that the contents tend to overflow to the outer surface side of the mouth of the container.

Regarding this point, in conventional threaded bottle caps, for example, as disclosed in Patent Document 2 and Patent Document 3, a sealing gasket formed on the inner surface side of the top plate portion of the bottle cap is formed. An inner annular rib (an inner annular convex shape, an inner boss) having an outer diameter larger than the inner diameter of the container mouth and pressurized on the inner surface side of the container mouth, regarding the inner ring of such a sealing gasket Shaped ribs, disclosed in Patent Document 3 until the bottle cap is only rotated by a predetermined rotation angle in the direction of opening the cap, so that the inner annular rib (inner boss) and the inner surface of the container mouth (bottle mouth) The length of the protrusion (sagging) of the inner annular rib (inner boss) is set in a manner of pressure contact with the side, and this structure is transferred to the bottle cap of the wide-mouth container, so it can be considered that the above-mentioned opening can be prevented. Occurrence of spillage when capping.

However, no matter in the case of a container with a small inner diameter of the mouth or a wide-mouthed container with a large inner diameter of the mouth, by forming such an inner side that is in pressurized contact with the inner surface side of the mouth of the container, The annular rib, therefore, requires a greater force for turning the bottle cap when the cap is opened (also when the cap is closed) due to the frictional resistance caused by the pressurized contact between the inner annular rib and the mouth of the container. In particular, when the protruding length of the inner annular rib is long to prevent overflow, a very large force is required to turn the cap, which makes the operation of the switch (closing) difficult. question.

Therefore, there is a demand for a container that can prevent the liquid of the content from overflowing and can turn the cap with a small force when the wide-mouth container is opened.

(3) Plug and install the bottle cap 301 as the above-mentioned conventional easy-to-separate recycling plug-type plastic bottle cap shown in FIG. When exposed for a long time (more than three days) at a high temperature of 40°C, the inner diameter of the aperture portion 303 of the container body 302 becomes larger and the fitting edge with the inner sealing ring 313 of the bottle cap body 300 becomes smaller. When external pressure is applied to the container main body 302, the content may leak out.

Therefore, there is a demand for a container provided with a cap that does not leak liquid due to external pressure even if it is exposed to high temperature for a long time.

(4) When the above-mentioned metal bottle cap with a sealing gasket is pressed on the bottle, there may be errors in the sealing due to the shape of the thread teeth caused by molding, and liquid leakage may occur. In addition, since the metal bottle cap is in contact with the screw thread of the bolt and the top surface of the bore portion, it may be affected by the solidification of the contents, and the bottle cap may be difficult to open. In addition, there is a possibility that the plastic bottle cap is thermally shrunk, and the fitting with the bottle opening part becomes loose, which may cause liquid leakage. Therefore, plastic bottle caps also use sealing gaskets in the same way as metal bottle caps, which increases the manufacturing cost.

Therefore, there is a demand for a container provided with a cap that is easy to attach and detach to the container body by screwing the cap, has good airtightness, and has no fear of liquid leakage.

(5) In the case of the spout with a cap described in the above-mentioned Patent Document 4, since the premise is that the hardness of the cylindrical portion forming the cap is different from that of the cork, it is of course limited to the cap and the cork. The materials are different, and the bottle cap and the bottle stopper are formed separately. In addition, since the contact area is large, the rotational torque is large, and there is a problem that opening and closing is difficult. Furthermore, since the gap between the inner diameter of the cylindrical portion and the gap portion of the bottle cap is delicate, high-precision injection molding is required, which raises the problem of high manufacturing costs.

Therefore, it is desirable to have a bottle cap that is not necessarily limited to a material harder than the mouth (or spout) of the container body, even if the cap is tightened with a light force, it can prevent leakage of the contents and does not require a high degree of precision. Spout container with a cap.

Utility model content

The present invention is made to solve any one of the above-mentioned problems, and the object is to provide an ink supply container that can prevent ink leakage during transportation and storage caused by repeated expansion and contraction of the aperture portion of the container main body. Occurrence; can prevent the leakage of ink when opening the lid of the wide-mouth container; can prevent the leakage of liquid in the case of being exposed for a long time in a high temperature state; can improve the convenience and sealing of the bottle cap; can Ink leakage due to poor sealing when filling the container with ink is suppressed. In order to achieve the object, the present invention can be realized as the following forms or application examples.

[Application example 1] The ink supply container of this application example is an ink supply container filled with ink and sealed by attaching a cap to the bore of the container body, and is characterized in that it has an elastic top plate that is locked to the cap. The disc-shaped fitting gasket on the lower surface, the disc-shaped fitting gasket is provided with an outer fitting ring arranged on the outer peripheral edge portion of the lower surface of the top plate of the bottle cap and an inner fitting ring arranged parallel to the inside of the outer fitting ring. The closing ring has a tapered surface opened downward and inwardly at the inner peripheral edge portion of the upper port portion of the bore portion.

According to the ink supply container of this application example, when ink is filled into the container body and the cap is screwed onto the bore portion, the outer peripheral edge portion of the front end of the bore portion and the bottom surface of the top plate that is locked to the cap have The lower surface of the elastic disc-shaped fitting gasket is press-contacted with the inner peripheral lower edge of the outer fitting ring. In addition, the tapered surface of the inner peripheral edge portion of the front end of the caliber part is crimped with the outer peripheral lower edge of the inner fitting ring on the lower surface of the disc-shaped fitting gasket, so that the outer fitting ring and the inner fitting ring of the bottle cap are fitted together. The ring fits into the front end of the bore portion at two locations and tightly seals the container body. Then, when the diameter portion of the container body shrinks and the upper mouth portion of the diameter portion falls inwardly, the outer peripheral edge portion of the front end of the diameter portion and the inner periphery of the outer fitting ring of the disc-shaped fitting gasket of the bottle cap The crimping force at the lower edge is reduced. However, the pressure contact force between the tapered surface of the inner peripheral edge portion of the front end of the bore portion and the outer peripheral lower edge portion of the inner fitting ring of the bottle cap becomes stronger, and the container body is tightly sealed by fitting at two places. Therefore, even if the aperture portion of the container body repeats expansion and contraction, it is possible to prevent ink leakage from the mouth portion of the container body during transportation and storage in the distribution process.

[Application example 2] The ink supply container of this application example is characterized in that it includes a container body in which ink is sealed, and a bottle cap that fits in the mouth of the container body in a screwed state, and the bottle cap has an inner hole formed in the top plate. The gasket for sealing on the surface side and the thread for screwing formed on the peripheral wall of the skirt portion hanging down from the periphery of the top plate portion, the gasket has at least A part of the sealing portion that seals on the entire circumference and an inner annular rib with an outer diameter that is the same as or slightly smaller than the inner diameter near the upper end of the container mouth, in the direction of opening the bottle cap from the fully screwed position Rotate at least 80° so that the lower end of the outer surface portion of the inner annular rib is not located above the innermost end of the inner surface portion near the upper end of the container mouth.

According to the ink supply container of this application example, the seal between the gasket and the mouth of the container can be ensured, and at the same time, the inner annular rib can prevent the ink fluctuating in the container from flowing to the mouth of the container when the lid is opened. part of the outer surface side overflow. Moreover, since the inner annular rib is not in pressure contact with the mouth of the container, there is almost no frictional resistance between the inner annular rib and the mouth of the container, and the lid can be opened (closed) with a relatively small force. Turn the bottle cap.

[Application example 3] The ink supply container of this application example is characterized in that it includes a container body and a bottle cap attached to the bore portion of the container body, and the bottle cap includes a cap body and an outer periphery on one side of the cap body via a hinge. The cap part connected to the surface, the bottle cap body is equipped with a pull ring that is used to block the opening of the sealing plate of the injection tube that injects ink during use, and is used to break and separate the top plate and the surrounding wall of the bottle cap body during separate recovery. The gripper for separation, the contact sealing ring arranged on the lower surface of the top plate of the bottle cap body and in close contact with the upper surface of the aperture part, and the contact sealing ring arranged on the outside of the contact sealing ring and making the inner peripheral surface of the lower end part and the upper end outer peripheral surface of the aperture part Crimp ring.

According to the ink supply container of this application example, in the bottle cap, the cap body is attached so that the cap can be opened and closed. The peripheral wall is broken and easily removed from the bore portion of the container body. Moreover, according to the effect of the pressure ring provided on the lower surface of the top plate of the bottle cap main body, even if it is exposed to a high temperature state for a long time during distribution and storage, an ink supply container that does not leak due to external pressure can be realized.

[Application example 4] The ink supply container of this application example is characterized in that it has a container body and a bottle cap screwed on the aperture portion of the container body, and the bottle cap has an upper inner peripheral corner portion arranged on the inside and is connected to the aperture portion. The inclined surface-shaped support protrusion part contacted by the outer peripheral edge of the upper end, the lower surface of the top plate provided on the inner side of the support protrusion part, and the front end is in close contact with the top surface of the aperture part, and it is tilted toward any one of the inner side, the outer side, and both sides. The contact ring and the inner ring that is arranged on the lower surface of the top plate inside the contact ring and is in close contact with the upper inner surface of the bore portion so that the thickness of the front end is thinner and the thickness of the root bottom is thicker.

According to the ink supply container of this application example, in the state of being screwed to the aperture portion of the container main body in the bottle cap, for example, after becoming a high-temperature state, under the condition of thermal shrinkage, the inner peripheral corner of the upper end provided on the inner side The inclined-surface-shaped support protrusion of the part abuts against the upper end outer peripheral edge of the aperture part of the container main body to prevent inward contraction. In addition, when the front end is in close contact with the top surface of the bore portion, the front end is tilted toward the vertical side toward the inside, outside, or either side, and is more fully in close contact with the top surface of the bore portion by the spring effect. Furthermore, since the inner ring is in close contact with the upper inner surface of the bottle opening, no liquid leakage occurs. In addition, since the inner ring makes the thickness of the front part thinner to impart flexibility and the thickness of the root part is thicker to provide strength, it is easy to fasten the bottle cap when screwing and attaching it to the bore part. It is easy to open when the bottle cap screwed on the mouth part is removed. Accordingly, it is possible to realize an ink supply container that is easy to attach and detach to the container main body by screwing the cap, has good airtightness, and has no risk of liquid leakage.

[Application Example 5] The ink supply container of this application example is characterized in that it includes a container main body, a cylindrical spout portion protruding from the container main body, and a cover portion fixed to the spout portion to seal the spout portion. The part has an inner ring formed on the inner side of the outer peripheral wall part and a groove-shaped part formed between the outer peripheral wall part and the inner ring and capable of allowing the upper end part of the spout part to enter, and the inner bottom of the groove-shaped part and the outer peripheral wall part The corner portion of the sprue portion is provided with a bulging portion that bulges toward the outer peripheral edge portion at a portion facing the outer peripheral edge portion of the upper end portion of the sprue portion.

According to the ink supply container of this application example, the inner ring and the groove-shaped portion are provided, and the portion facing the corner portion of the outer peripheral portion of the cover portion and the outer peripheral edge portion of the upper end portion of the spout portion is bulged toward the upper end of the spout portion. The outer peripheral edge of the part bulges. Thus, when the spout portion is inserted toward the inner side of the groove portion of the cap and the cap is fixed on the spout portion, the outer wall surface of the groove portion and the inner ring sandwich the upper end portion of the spout portion while facing toward the Inside boot. Therefore, the inner edge portion of the upper end portion of the sprue portion is in close contact with the inner ring, and the outer peripheral edge portion of the upper end portion of the sprue portion and the outer wall surface portion near the inner bottom of the groove-shaped portion are closer to the entire circumference of the sprue portion. Adhere strongly and seal the spout. Therefore, even if the bottle cap is tightened with a light force, ink leakage can be prevented and an ink supply container that does not require high precision can be realized.

Description of drawings

FIG. 1 is a perspective view schematically showing the main configuration of an inkjet system according to an embodiment.

Fig. 2 is an explanatory view showing the structure of the cap of the ink supply container according to the first embodiment.

3 is an explanatory view showing the structure of the mouth portion of the bore portion of the container body of the ink supply container according to the first embodiment.

FIG. 4 is an explanatory view showing a state in a case where a high temperature becomes high after ink is filled into a container main body.

FIG. 5 is an explanatory view showing the state of the mouth portion when the filled ink is cooled to normal temperature.

Fig. 6 is an explanatory view showing a conventional example of attaching and sealing a bottle cap to a bore portion.

Fig. 7 is an explanatory view showing another conventional example in which a bottle cap is attached to a bore portion and sealed.

Fig. 8 is an explanatory view showing another conventional example in which a bottle cap is attached to a bore portion and sealed.

Fig. 9 is a cross-sectional view of an ink supply container according to a second embodiment.

Fig. 10 is a longitudinal sectional view showing the shape of the gasket in a state where the cap is fitted on the mouth of the container in a fully screwed state.

Fig. 11 is a longitudinal sectional view showing the shape of the liner in the state before the bottle cap roll forming.

Fig. 12A is a cross-sectional view showing the state of the bottle cap relative to the mouth of the container at various stages of uncapping.

Fig. 12B is a cross-sectional view showing the state of the cap relative to the mouth of the container at each stage of uncapping.

Fig. 12C is a cross-sectional view showing the state of the bottle cap relative to the mouth of the container at various stages of uncapping.

Fig. 12D is a cross-sectional view showing the state of the cap relative to the mouth of the container at each stage of uncapping.

Fig. 13A is a cross-sectional view showing the state of the bottle cap relative to the mouth of the container at each stage of uncapping according to a modification.

Fig. 13B is a cross-sectional view showing the state of the bottle cap relative to the mouth of the container at each stage of uncapping.

Fig. 13C is a cross-sectional view showing the state of the bottle cap relative to the mouth of the container at various stages of uncapping.

Fig. 13D is a cross-sectional view showing the state of the bottle cap relative to the mouth of the container at each stage of uncapping.

Figure 14 is a cross-sectional view showing the headspace within the container of the wide mouth container.

Fig. 15 is a cross-sectional view of an ink supply container according to a third embodiment.

Fig. 16 is an enlarged cross-sectional view showing a main part of the cap main body of the ink supply container.

Fig. 17 is an explanatory diagram showing the structure of the cap main body.

Fig. 18 is a cross-sectional view when a conventional bottle cap is attached to the bore portion of the container body.

Fig. 19 is a cross-sectional view of an ink supply container according to a fourth embodiment.

Fig. 20 is a cross-sectional view of main parts showing another example when the cap is screwed to the bore of the container body.

Fig. 21 is a cross-sectional view of main parts showing another example when the bottle cap is screwed to the bore of the container body.

Fig. 22 is a cross-sectional view of main parts showing another example when a bottle cap is screwed to a bore portion of a container body.

Fig. 23 is a cross-sectional view showing an inner ring as a modified example.

Fig. 24 is a cross-sectional view showing a lower end surface and a shoulder as a modified example.

Fig. 25 is a cross-sectional view of an ink supply container according to a fifth embodiment.

Fig. 26 is a cross-sectional view showing the structure of the groove-shaped portion of the cover.

Fig. 27 is a cross-sectional view showing a state in which a sealing structure for the mouth of the liquid container is provided in the box-shaped container.

Fig. 28 is a cross-sectional view showing the sealing structure of the mouth of the liquid container according to the first modification.

Fig. 29 is a cross-sectional view showing the sealing structure of the mouth of the liquid container according to the second modification.

Fig. 30 is a cross-sectional view showing the sealing structure of the mouth of the liquid container according to the third modification.

31 is a cross-sectional view showing a sealing structure of a mouth of a liquid container according to a fourth modification.

Explanation of reference signs

1 inkjet system; 2 printer; 9 ink tank; 11 ink injection part; 15 ink supply container; 100 bottle cap; 130 disc-shaped fitting gasket; 131 outer fitting ring; ; 180 caliber part; 181 tapered surface; X inner peripheral fitting diameter of outer fitting ring; Y outer peripheral fitting diameter of inner fitting ring; angle of α tapered surface; z starting diameter of tapered surface; 15A ink Supply container; 201 bottle cap; 203 liner; 204 container main body; 211 top plate; 213 skirt; 223 thread of bottle cap; 234 is the outer annular rib of the sealing portion; 240 is the mouth of the container; 241 is the curling portion near the upper end of the mouth of the container; 241a is the innermost end of the curling portion; 15B is the ink supply container; 300 bottle cap main body; 301 bottle cap; 302 container main body; 303 caliber part; 310 top plate of bottle cap main body; 311 pressure ring; Pull ring; 360 handle for separation; 370 cover; 15C ink supply container; 400 bottle cap; 410 top plate; 411 supporting protrusion; 412 contact ring; 413 inner ring; 460 container body; 501 container body; 505 cover; 507 outlet; 507b outer peripheral edge; 510 peripheral wall;

Detailed ways

Next, embodiments of the present invention will be described with reference to the drawings. In addition, in each subsequent figure, for convenience of explanation, the dimensions of each member are shown with different dimensions from actual ones.

FIG. 1 is a perspective view schematically showing the main configuration of an inkjet system 1 of the following embodiment. In addition, FIG. 1 adds XYZ axes which are mutually orthogonal coordinate axes, and shows the usage state when the inkjet system 1 is arrange|positioned on the XY plane which coincides with a horizontal plane. In this case, the X axis coincides with the direction in which the carriage 7 reciprocates, the Y (Y+) axis coincides with the direction in which the recording medium P is transported, and the Z axis coincides with the height direction of the inkjet system 1 .

An inkjet system 1 according to the present embodiment includes a printer 2 as an example of an inkjet device and an ink supply device 3 as shown in FIG. 1 . The printer 2 has a control unit 4 and a recording unit 5 . In the printer 2 , the control unit 4 and the recording unit 5 are accommodated in a casing 6 . The recording unit 5 performs recording with ink on the recording medium P conveyed in the Y-axis direction by a conveying device (not shown). In addition, a conveying device (not shown) intermittently conveys the recording medium P such as recording paper in the Y(+) direction. The recording unit 5 is configured to be capable of reciprocating movement along the X-axis by a moving device. The ink supply device 3 supplies ink to the recording unit 5. The control unit 4 collectively controls the driving of the above-mentioned respective structures.

The recording unit 5 includes a carriage 7 and a recording head 8 . The recording head 8 is an example of an ink ejection unit, and ejects ink as ink droplets to perform recording on the recording medium P. As shown in FIG. A recording head 8 is mounted on the carriage 7 . In addition, the recording head 8 is electrically connected to the control unit 4 . The ejection of ink droplets from the recording head 8 is controlled by the control unit 4 .

The ink supply device 3 has an ink tank 9 . The ink supply device 3 of this embodiment has a plurality (four in this embodiment) of ink tanks 9 . A plurality of ink tanks 9 are accommodated inside the housing 10 . Thereby, the ink tank 9 can be protected by the frame body 10 . In addition, the frame body 10 and the frame body 6 may be separated from each other or may be integrated. When the housing 10 and the housing 6 are integrated, the plurality of ink tanks 9 , the recording head 8 , and the ink supply tube 12 can all be housed inside the housing 6 .

Ink is accommodated (stored) inside the ink tank 9 . An ink injection portion 11 is formed in the ink tank 9. As shown in FIG. Ink can be injected (replenished) into the ink tank 9 from the outside of the ink tank 9 via the ink injection unit 11 into the ink tank 9 . In addition, a worker can access the ink injection part 11 of the ink tank 9 from the outside of the housing 10 . In addition, the ink injection part 11 is sealed with a cap (not shown). When injecting (replenishing) ink into the ink tank 9, the operator opens the cap to open the ink injection portion 11, and then injects (replenishes) ink through an ink replenishing container described later.

An ink supply tube 12 is connected to each ink tank 9 . The ink in the ink tank 9 is supplied from the ink supply device 3 to the recording head 8 via the ink supply tube 12 . Then, the ink supplied to the recording head 8 is ejected as ink droplets from nozzles (not shown) facing the recording medium P side. In addition, in the above-mentioned example, the printer 2 and the ink supply device 3 have been described as separate configurations, but a configuration in which the ink supply device 3 is included in the printer 2 is also possible.

In addition, the ink supply device 3 is provided on the X(+) side of the printer 2 in this embodiment. However, the installation position of the ink supply device 3 (ink tank 9) is not limited to this, and may be installed on the side of the X (-) side of the printer 2, the side of the Y (+) side of the printer 2 (the side of the front side). )Wait.

In the inkjet system 1 having the above-mentioned structure, the recording head 8 is positioned at a predetermined position while the recording medium P is conveyed in the Y-axis direction (Y (+) direction) and the carriage 7 is reciprocated along the X-axis. Ink droplets are ejected to perform recording on the recording medium P. As shown in FIG. These operations are controlled by the control unit 4 .

The ink is not limited to either water-based ink or oil-based ink. In addition, the water-based ink may be either an ink having a structure in which a solute such as a dye is dissolved in an aqueous solvent or an ink having a structure in which a dispersoid such as a pigment is dispersed in an aqueous dispersant. In addition, the oil-based ink may be either an ink having a structure in which a solute such as a dye is dissolved in an oil-based solvent or an ink having a structure in which a dispersoid such as a pigment is dispersed in an oil-based dispersant.

In this embodiment, the ink replenishment container is used for injecting ink into the ink tank 9 . Various embodiments of the ink supply container will be described below.

[first embodiment]

Next, the ink supply container 15 of this embodiment will be described with reference to the drawings. In addition, in each figure, the same code|symbol represents the same or equivalent structural element.

FIG. 2 is an explanatory diagram showing the structure of the cap 100 of the ink supply container 15 according to this embodiment. Fig. 3 is an explanatory view showing the structure of the mouth portion of the bore portion 180 of the container body 170 of the ink supply container 15 according to the present embodiment. FIG. 4 is an explanatory diagram showing a state in a case where it becomes high temperature after ink is filled into the container main body 170 . FIG. 5 is an explanatory view showing the state of the mouth portion when the filled ink is cooled to normal temperature.

In addition, FIG. 6 is an explanatory diagram showing a conventional example in which the cap 100 is attached to the bore portion 180 and sealed. FIG. 7 is an explanatory view showing another conventional example in which the bottle cap 100 is attached to the bore portion 180 and sealed. FIG. 8 is an explanatory view showing another conventional example in which the bottle cap 100 is attached to the bore portion 180 and sealed.

The ink supply container 15 of the present embodiment includes a container main body 170 and a cap 100 attached to a bore portion 180 of the container main body 170 . Bottle cap 100 is equipped with elastic disk-shaped fitting gasket 130 as shown in Figure 2, and this disk-shaped fitting gasket 130 has outer side fitting ring 131 on the lower surface of the outer peripheral edge, and is connected with this outer side fitting ring 131. There is an inner fitting ring 132 parallel to the inner side of the inner side.

Furthermore, the disc-shaped fitting gasket 130 is the lower surface of the top plate 110 and is locked by the locking portion 122 provided on the upper inner peripheral surface of the peripheral wall 120 . The threaded part 121 with the container main body 170 is provided on the inner peripheral surface of the peripheral wall below the locking part 122 . In addition, the above-mentioned disc-shaped fitting gasket 130 is made of an elastic material such as ethylene/propylene rubber, thermoplastic elastomer, or the like.

As shown in FIG. 3 , the inner peripheral portion of the upper port portion of the bore portion 180 is provided with a tapered surface 181 opened downward and inward. The screwing portion 182 of the container main body 170, which is screwed with the screwing portion 121 of the cap 100, is provided on the outer peripheral surface of the bore portion 180. As shown in FIG.

Then, as shown in FIGS. 2 and 3 , the inner peripheral fitting diameter X of the outer fitting ring 131 of the disc-shaped fitting gasket 130 is set to, for example, the outer periphery of the upper port portion of the bore portion 180 of the container body 170 -0.05 to 1.25mm of fitting diameter x. In addition, the outer peripheral fitting diameter Y of the inner fitting ring 132 of the disc-shaped fitting gasket 130 is set to, for example, +0.05 to 1.25 of the inner peripheral fitting diameter y of the upper port portion of the bore portion 180 of the container body 170 . mm.

In addition, the angle α of the tapered surface 181 opening downward and inwardly provided on the inner peripheral portion of the upper port portion of the bore portion 180 of the container body 170 is set to, for example, 20° to 75°. Then, the starting diameter z of the tapered surface 181 is set to, for example, +0.05 to 1.25 mm of the outer peripheral fitting diameter Y of the inner fitting ring 132 of the disc-shaped fitting gasket 130 .

According to the above-mentioned structure of the ink supply container 15, as shown in FIG. The inner peripheral lower edge of the outer fitting ring 131 fitted to the lower surface of the gasket 130 is press-contacted. In addition, the tapered surface 181 of the inner peripheral edge portion of the front end of the bore portion 180 of the container body 170 is in pressure contact with the outer peripheral lower edge portion of the inner fitting ring 132 on the lower surface of the disc-shaped fitting gasket 130 . In this manner, the outer fitting ring 131 and the inner fitting ring 132 of the bottle cap 100 are fitted to the front end portion of the bore portion 180 of the container body 170 at two locations to tightly seal the container body 170 .

Then, the aperture portion 180 of the container main body 170 shrinks, and as shown in FIG. The crimping force of the inner peripheral lower edge portion of the outer fitting ring 131 of the disc-shaped fitting gasket 130 of the cap 100 is reduced, but the tapered surface 181 of the inner peripheral edge portion of the front end of the bore portion 180 of the container body 170 is in contact with the bottle. The crimping force of the outer peripheral lower edge of the inner fitting ring 132 of the cap 100 becomes stronger, and the container body 170 is tightly sealed by fitting at two places.

In addition, in order to seal by the two rings of the outer fitting ring 131 and the inner fitting ring 132 , it is necessary to bring them into contact with the mouth and press them tightly. Therefore, in this embodiment, there is ensured that the outer fitting ring 131 and the inner fitting ring 132 do not interfere with each other when elastically deformed and squeezed between the outer fitting ring 131 and the inner fitting ring 132 . A void space S (see FIGS. 4 and 5 ) is formed between the portion and the lower surface of the disc-shaped fitting gasket 130 . In other words, in order to reliably seal, there is provided a space S that does not interfere even when elastically deformed and squeezed.

Therefore, according to the ink supply container 15, even if the aperture portion 180 of the container body 170 shrinks from the expanded state due to high-temperature storage after filling the ink, or repeats the same, it is possible to prevent damage during transportation and storage during distribution. Leakage of ink from the mouth of the container main body 170 occurs.

In addition, when the bottle cap 100 is installed after the ink is injected, the ink remaining near the front end of the mouth of the container body 170 enters the groove between the outer fitting ring 131 and the inner fitting ring 132 by capillary action ( The above-mentioned space S), so that the remaining ink can be kept in the space S. Therefore, the vicinity of the mouth of the spout of the container main body 170 can be prevented from being polluted.

[Second Embodiment]

Next, the ink supply container 15A of this embodiment will be described with reference to the drawings. In addition, in each figure, the same code|symbol represents the same or equivalent structural element.

FIG. 9 is a cross-sectional view of an ink supply container 15A of the second embodiment. In detail, regarding one embodiment of the overflow prevention structure of the bottle cap 201 for wide-mouth containers, it is shown that the anti-theft cap (cap 201) is fitted on the container mouth 240 of the container main body 204 to show that it is not opened. A longitudinal sectional view of the state. Fig. 10 is a longitudinal sectional view showing the shape of the gasket 203 in a state where the bottle cap 201 is fitted over the container mouth 240 in a fully screwed state. FIG. 11 is a longitudinal sectional view showing the shape of the liner 203 in the state before the bottle cap 201 is roll-formed. 12A to 12D are cross-sectional views showing states of the bottle cap 201 relative to the container mouth 240 at each stage of opening the cap.

13A to 13D are cross-sectional views showing states of the bottle cap 201 with respect to the container mouth 240 at each stage of opening the modified example. Fig. 14 is a cross-sectional view showing the headspace inside the container of a wide mouth container (wide mouth resealable can).

In this embodiment, a bottle cap 201 for a wide-mouth container includes a metal shell 202 and a resin-made sealing gasket 203 as shown in Fig. 9 . The bottle cap 201 is provided with a gasket 203 on the inner surface side (lower surface side) of the top plate portion 211 relative to the shell 202 in which the skirt portion 213 hangs down from the periphery of the top plate portion 211 via the corner portion 212 . The cap 201 of the present embodiment is configured as a so-called anti-theft cap.

In a state where the cap 201 is attached to the mouth portion 240 of the container main body 204 by roll forming, a thread 223 is formed on the peripheral wall of the skirt portion 213 of the cap 201 (case 202 ). At the distal end portion of the skirt portion 213 below the thread 223, the anti-theft band 224 is formed so as to be detachable from the skirt portion 213 via a breakable weakened portion 225.

The container main body 204 of the wide-mouthed container of the present embodiment to which the bottle cap 201 is attached is made of a wide-mouthed (for example, the outer diameter of the container mouth 240 is more than 35mm) tank container, and the wide-mouthed tank container is made of aluminum, steel, etc. Metal plates for cans (for example, protective coatings with polyester films thermally fused on both sides). A curling portion 241 that rolls outwards is annularly formed along the opening edge of the upper end of the container mouth portion 240, an inclined wall 242 extends downward and outward from the curling portion 241, and a screw thread 243 is formed on the lower part of the inclined wall 242, An annular bulging portion 244 is formed below the screw thread 243 .

The installation of the bottle cap 201 by roll forming to such a container body 204 is omitted from the illustration, but a well-known metal bottle cap is used from the state where the bottle cap 201 is placed on the container mouth 240 from above. Capping device (capping machine). While applying the maximum load to the top plate portion 211 of the bottle cap 201 by the capping device, the peripheral wall of the skirt portion 213 of the bottle cap 201 is formed in such a manner that the respective forming rollers of the device engage with the thread 243 of the container mouth 240 . Deformed to form threads 223 . In addition, the lower end of the anti-theft band 224 formed at the distal end of the skirt 213 is capped so that the lower end of the ring-shaped bulging portion 244 of the container mouth 240 is engaged, so that the bottle cap 201 It is fitted so as to be in a screwed state with respect to the container mouth 240 .

The materials of the shell 202 and the packing 203 of the bottle cap 201 are not particularly limited. For the case 202, in this embodiment, a conventionally known metal material for bottle caps such as an aluminum alloy plate coated with an epoxy-phenolic resin in which an olefin resin is dispersed is used in the present embodiment.

In addition, as for the gasket 203, in this embodiment, conventional materials such as a mixed material of low-density polyethylene and ethylene-propylene copolymer synthetic rubber, a mixed material of polypropylene and a styrene-based elastomer, and a polyester-based elastomer are used. Known resin materials for gaskets. Then, the inner surface side of the top plate portion 211 is formed by a well-known compression molding method in which molding is performed by extrusion in a molten state, or the like.

Regarding the shape of the liner 203 molded in this way and attached to the inner surface side of the top plate portion 211 of the bottle cap 201, its central portion is formed as a disc-shaped thin-walled flat portion 231. Two annular ribs (the inner annular rib 232 and the outer annular rib 234 ) hanging down long are concentrically formed with a predetermined interval therebetween.

In addition, the portion between the respective annular ribs 232 and 234 is concentrically formed with one annular protrusion 233 that protrudes short downward. The outer surface portion (the outer surface excluding the bent portion at the lower end) of the inner annular rib 232 is substantially a vertical wall. Then, the packing 203 and the curled portion 241 are press-contacted on the lower end surface of the annular protrusion 233 and the inner surface portion of the outer annular rib 234 .

In the state before the bottle cap 201 with the liner 203 of such a shape is roll-formed, as shown in FIG. The concave portion 212b is an upper section 212a and a lower section 212c bounded by upper and lower sections.

Then, the gasket 203 attached to the inner surface side of the top plate portion 211 of the case 202 is in close contact with the case 202 from the top plate portion 211 to the vicinity of the concave portion 212b of the corner portion 212 . Then, the outer annular rib 234 of the two annular ribs formed on the peripheral portion of the liner 203 hangs down below the concave portion 212b of the corner portion 212 and between the lower portion 212c of the corner portion 212. spaced apart.

With regard to the bottle cap 201 shown in FIG. 11 , first, the curled portion 241 is sandwiched between the inner annular rib 232 and the outer annular rib 234 of the liner 203 , and placed on the container mouth 240 from above. , and the ring-shaped protrusion 233 of the gasket 203 is in contact with the top surface portion of the curled portion 241 .

After that, when the capping device for metal caps is used to install the cap 201 on the container mouth 240 while performing roll forming, the illustration is omitted, but the cap is pressed from above by the pressure pad passing through the device. At the same time, the top plate part 211 of 201 is deformed so that the lower part 212c of the corner part 212 is narrowed inward by the pressure block of the device. As a result, the outer annular rib 234 comes into pressure contact with the outer surface portion of the curled portion 241 while being pressed by the lower portion 212c of the narrowed corner portion 212 as shown in FIG. 10 .

In this way, not only the lower end surface of the ring-shaped protrusion 233 and the top surface portion of the curled portion 241 are press-contacted by the gasket 203, but also the inner surface portion of the outer annular rib 234 and the outer surface portion of the curled portion 241 are stronger. pressurized contact. Thus, even if the inside of the container sealed with the ink becomes a positive pressure by the ambient temperature and the top plate portion 211 of the bottle cap 201 is bulged outward by the internal pressure of the container which becomes the positive pressure, it is sufficient. The airtightness between the bottle cap 201 and the container mouth 240 is ensured. Here, the annular protrusion 233 and the outer annular rib 234 function as a sealing portion.

In a state where the bottle cap 201 is fitted over the container mouth 240 and the sealing performance is sufficiently ensured by the annular protrusion 233 and the outer annular rib 234, the outer surface portion of the inner annular rib 232 of the gasket 203 (excluding The outer surface of the substantially vertical plane other than the curved portion of the lower end) has a slight distance from the inner surface portion of the curled portion 241 of the container mouth portion 240 (the innermost end portion of the inner surface portion), or It is in a state of being in contact slightly (to the extent that the increase in cap opening torque falls within the error range) and not in a state of press contact. That is, the outer diameter of the inner annular rib 232 is equal to or smaller than the inner diameter of the curled portion 241 (diameter of the innermost end portion 241a of the curled portion 241) so that the difference is within the range of 0 to 0.05 mm. Slightly small.

In addition, the height of the inner annular rib 232 (the length that hangs down from the flat portion 231) ranges from the state in which the bottle cap 201 is completely fitted on the container mouth 240 (completely screwed state) to the state in which the bottle cap 201 is opened. Rotate at least 80° in the cap direction (that is, at the moment when the bottle cap 201 is rotated by 80° in the cap opening direction), as shown in FIG. The lower end 232 a of the substantially vertical outer surface other than the curved portion of the lower end is not located above the innermost end portion (minimum inner diameter portion) 241 a of the inner surface portion of the curled portion 241 .

That is, in the state where the bottle cap 201 is completely fitted into the mouth portion 240 of the container as shown in FIG. 241a (in addition, when the longitudinal cross-section of the inner surface portion of the curled portion 241 is not arc-shaped but linear, as shown in FIG. 13A, it is the upper end 241a of the inner surface portion) as a reference, located below it In the range of 0.7 ~ 2.0mm.

In addition, in the bottle cap 201 of this embodiment, as shown in FIG. 9 , an anti-theft band 224 is formed below the skirt 213 of the bottle cap 201 via a breakable weakened portion 225. Then, when the container is unsealed, the bottle cap 201 is rotated in the uncapping direction until the weakened portion 225 is broken, and the lower end 232a of the outer surface portion of the inner annular rib 232 is not located at the lower end than the inner surface portion of the curled portion 241. The inner end portion (minimum inner diameter portion) 241a is on the upper side. In addition, the weakened portion 225 is broken when the bottle cap 201 is rotated by 80° in the cap opening direction from the fully screwed state.

According to the bottle cap 201 for a wide-mouth container of this embodiment provided with the liner 203 as described above, the curled portion 241 of the container mouth 240 is formed by the ring-shaped protrusion 233 and the outer ring-shaped rib 234 formed on the liner 203 . The top surface portion and the outer surface portion of the bottle cap 201 and the container mouth 240 can sufficiently ensure the required airtightness. And, when the cover is opened, even if the container main body 204 is inclined and the liquid level of the ink fluctuates in the container, the fluctuating ink can be shielded from the ring of the top surface portion of the curled portion 241 and the gasket 203 by the inner annular rib 232 . The gap of the shaped protrusion 233 moves toward the outer surface side of the container mouth portion 240 .

In addition, when the outer annular rib 234 is separated from the curled portion 241 , the fluctuating ink does not overflow to the outer surface side of the container mouth portion 240 . Then, since the outer surface portion of the inner annular rib 232 is not in pressure contact with the inner surface portion of the container mouth 240, almost no frictional resistance is generated between the inner annular rib 232 and the container mouth 240, and the The bottle cap 201 can be turned with a small force when opening (closing) the cap.

In particular, in the bottle cap 201 for the wide-mouth container of the present embodiment, the bottle cap 201 is an anti-theft cap, so that when the container is unsealed, the bottle cap 201 is used for breaking when the bottle cap 201 is rotated in the opening direction. When the weakened portion 225 of the anti-theft belt 224 breaks, the opening torque increases gradually before breaking, and the opening torque suddenly decreases from the moment of breaking. Due to the severe reaction at this time, the liquid level of the ink in the container fluctuates greatly, and the possibility of ink overflowing to the outer surface side of the container mouth portion 240 increases when the cap is opened.

However, in the present embodiment, since the lower end 232a of the outer surface portion of the inner annular rib 232 is located at the innermost end (the smallest inner diameter) than the inner surface portion of the curled portion 241, until the breakage of the weakened portion 225 is completed. part) 241a is below, so even if the liquid level of the ink in the container fluctuates greatly due to the breakage of the weakened part 225, the ink after the fluctuation can be reliably shielded from the outer surface of the container mouth part 240 by the inner annular rib part 232. Move sideways.

In addition, in the present embodiment, the outer diameter of the inner annular rib 232 is made the same as the inner diameter of the curled portion 241 or Slightly smaller than this, the difference between the inner diameter of the curled portion 241 and the outer diameter of the inner annular rib 232 is set within a range of 0 to 0.05 mm. The reason is that when the difference between the inner diameter of the curled portion 241 and the outer diameter of the inner annular rib 232, that is, the gap between the curled portion 241 and the inner annular rib 232 is greater than 0.05 mm, the viscosity will be low. When the ink is filled in the container, the ink fluctuating in the container may move to the outer surface side of the container mouth portion 240 through the gap between the curl portion 241 and the inner annular rib portion 232 .

In addition, in the present embodiment, at the fully screwed position of the bottle cap 201, the lower end 232a of the outer surface portion (the outer surface of the substantially vertical wall except the bent portion of the lower end) of the inner annular rib 232 is curled. Based on the innermost end portion (minimum inner diameter portion) 241a of the inner surface portion of the portion 241, it is positioned within a range of 0.7 to 2.0 mm below it. The reason for this is to reliably prevent ink overflow during cap opening and to smoothly perform the cap opening (closing) operation of the bottle cap 201 with respect to the container mouth 240.

That is, at the fully screwed position of the bottle cap 201, when the innermost end 241a of the inner surface portion of the curling portion 241 (in addition, the longitudinal section of the inner surface portion of the curling portion 241 is not arc-shaped but linear 13A, when the upper end 241a of the inner surface part) makes the lower end 232a of the outer surface part of the inner annular rib 232 more than 0.7mm above, when the container is unsealed, the anti-theft Before the weakened portion 225 of the belt 224 breaks, since the lower end 232a of the outer surface portion of the inner annular rib portion 232 is located above the innermost end portion 241a of the inner surface portion of the curled portion 241, there is a gap between the curled portion 241 and the inner annular rib. A sufficient space is opened between the portions 232, so ink overflow becomes easy to occur. On the other hand, when it is lower than 2.0 mm, it becomes difficult to form the part of the inner annular rib 232 when the liner 203 of a predetermined shape is molded by synthetic resin, and the bottle cap 201 has a lower position relative to the container mouth 240. When opening (closing) the lid, the inner annular rib 232 is too long to be an obstacle.

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

(1) According to the ink supply container 15A of this embodiment, by using the bottle cap 201 for a wide-mouth container, the sealing performance between the bottle cap 201 and the container mouth 240 can be sufficiently ensured, and at the same time, the ink can be prevented from flowing to the container when the cap is opened. The outer surface of the container mouth 240 overflows. Furthermore, the bottle cap 201 can be rotated with a small force without generating a large frictional resistance with the container mouth 240 .

(2) According to the ink supply container 15A of this embodiment, since the container body 204 and the cap 201 are made of metal, evaporation of the ink filled in the container can be prevented and the viscosity of the ink can be maintained. Thereby, ink characteristics can be maintained favorably.

In addition, it is not limited to above-mentioned embodiment, In the range which does not deviate from the summary, various changes, improvement, etc. can be added and implemented. Modifications are described below.

For example, the resin spacer does not need to have a central portion (disk-shaped thin-walled flat portion 231 ).

The outer surface portion of the inner annular rib 232 may not be a completely vertical wall but a slightly inclined inclined wall.

The bottle cap 201 is not limited to a metal shell and a resin liner, but may be a hard resin shell and a soft resin liner, integrated on the inner surface side of the top plate of the resin cap. Molded bottle caps with a liner portion.

It is not limited to the anti-theft bottle cap, and it can also be a bottle cap without anti-theft function.

Regarding the container main body, in the case of a metal wide-mouth resealable can, the shape of the curled portion near the upper end of the mouth of the container may be such that the longitudinal cross-section of the inner surface portion of the curled portion 241 may not be an arc as shown in FIG. 13A. Shaped into a straight line shape.

The container is not limited to the metal wide-mouth resealable can in which the upper end vicinity of the mouth of the container is formed as a curl, and other containers such as resin wide-mouth containers and glass jars may be used.

[Third Embodiment]

Next, the ink supply container 15B of this embodiment will be described with reference to the drawings. In addition, in each figure, the same code|symbol represents the same or equivalent structural element.

FIG. 15 is a cross-sectional view of an ink supply container 15B of the third embodiment. In detail, FIG. 15 is a cross-sectional view when the bottle cap 301 is attached to the bore portion 303 of the container body 302. As shown in FIG. FIG. 16 is an enlarged sectional view showing a main part of the cap main body 300 of the ink supply container 15B. FIG. 17 is an explanatory diagram showing the structure of the cap main body 300 . FIG. 18 is a cross-sectional view when a conventional bottle cap 301 is attached to the aperture portion 303 of the container body 302 .

The ink supply container 15B of this embodiment is composed of a container main body 302 and a cap 301 attached to a bore portion 303 of the container main body 302 . When the bottle cap 301 is attached to the aperture portion 303 of the container body 302, it has rigidity that does not open outward.

The bottle cap 301 of the present embodiment is configured as an easily detachable and recoverable plug-type plastic bottle cap. The bottle cap 301, as shown in FIG.

The cap portion 370 is provided with a snap ring 391 on the inner peripheral surface of the lower end portion of the peripheral wall 390 to snap-engage with the snap-in cylinder 330 provided on the top plate 310 of the bottle cap main body 300 . An opening and closing handle 392 protrudes from the outer peripheral surface of the lower end portion of the peripheral wall 390 on the side opposite to the hinge connected to the bottle cap body 300 of the cap portion 370 .

The bottle cap main body 300 is provided with a snap ring 321 on the inner peripheral surface of the lower end portion of the peripheral wall 320, which engages with the snap ring 304 provided on the outer peripheral surface of the bore portion 303 of the container body 302. The bottle cap main body 300 is provided on the upper inner peripheral surface of the peripheral wall 320 with an engaging cylinder 330 engaged with the engaging ring 391 of the cap part 370 on the upper surface.

An injection cylinder 340 and a top plate 310 are connected inside the engaging cylinder 330 . A blocking plate 350 is provided to block the inner lower end of the injection cylinder 340 .

A notch 351 is provided from the opposing surface at a predetermined opening position of the blocking plate 350 to form an annular thin-walled weak line 352 of arbitrary shape. On one side of the upper surface near the inner side of the ring-shaped thin-walled weak line 352, a support (not shown) having a ring-shaped pull ring 354 is usually erected at the front end.

The lower surface of the top plate 310 is usually provided with a contact sealing ring 312 that is in close contact with the top surface of the aperture portion 303 of the container body 302 to seal the container body 302 and is in close contact with the inner peripheral surface of the aperture portion 303 to seal the container body. 302 inner sealing ring 313.

In addition, as shown in FIG. 17 , the bottle cap main body 300 is protrudingly provided with a handle 360 for separation on the outer peripheral surface of the upper end portion of the peripheral wall 320 . A thin-walled weak line (not shown) extending from the position a of the root portion of the separating handle 360 of the peripheral wall 320 to the lower end thereof is formed on the outer peripheral surface side. In addition, a thin-walled line of weakness 314 is formed on the upper surface side of the outer peripheral portion of the top plate 310 from a position a at the base of the separation grip 360 parallel to the peripheral wall 320 to a position b.

When using the bottle cap 301, open the cover part 370 through the opening and closing handle 392, and pull the pull ring 354 housed in the injection tube 340 upward with your fingers, so that the annular ring of the blocking plate 350 in the injection tube 340 is blocked. The thin-walled weak line 352 breaks and opens.

When the bottle cap 301 is separated and collected from the bore portion 303 of the container body 302 for disposal after use, the separation handle 360 provided on the outer peripheral surface of the upper end portion of the peripheral wall 320 is pulled outward along the peripheral wall 320 .

Pulling the separating handle 360 outward along the peripheral wall 320 breaks the thin line of weakness provided on the slope of the peripheral wall 320 reaching the lower end and the thin line of weakness 314 provided on the outer peripheral edge of the top plate 310 . Thereby, the bottle cap 301 is detached from the aperture part 303 of the container main body 302 .

In addition, the cap 301 is produced by injection molding using a thermoplastic resin such as polyethylene.

Then, as shown in FIGS. 15 and 16 , the bottle cap 301 is provided on the outer side of the contact seal ring 312 that is in close contact with the upper surface of the aperture portion 303 of the container body 302 provided on the lower surface of the top plate 310 of the bottle cap body 300 so that the inner portion of the lower end is closed. A pressure ring 311 whose peripheral surface is in pressure contact with the outer peripheral surface of the upper end of the bore portion 303 of the container body 302 .

In addition, as shown in Figure 15 and Figure 16, the bottle cap 301 is provided on the inner peripheral surface above the snap ring 321 provided on the lower end inner peripheral surface of the peripheral wall 320 of the bottle cap main body 300 so that the upper inner peripheral surface is aligned with the inner peripheral surface provided on the container main body. The outer peripheral surface of the diameter portion 303 of the 302 is pressed against the inclined surface 322 on the outer peripheral surface of the upper end portion of the snap ring 304 .

In addition, the inner diameter of the inclined surface 322 of the inner peripheral surface of the bottle cap main body 300 that is in pressure contact with the upper end outer peripheral surface of the snap ring 304 provided on the outer peripheral surface of the bore portion 303 of the container main body 302 is set to be larger than that of the bottle cap main body. The outer diameter of the outer peripheral surface of the upper end portion of the snap ring 304 of the diameter portion 303 of the container body 302 that the inclined surface 322 of the inner peripheral surface of the container body 300 is pressed against is only 0.1 to 0.4 mm smaller. When the crimping force is smaller than 0.1 mm, liquid leakage may easily occur, and when it is larger than 0.4 mm, the crimping force becomes too large, and breakage or plugging failure may occur.

In addition, the height of the pressure ring 311 of the bottle cap body 300 is higher than the height of the contact sealing ring 312 of the bottle cap body 300 by more than 0.2 mm. If it is less than 0.2 mm, the pressure of the pressure ring 311 is insufficient.

In addition, the thickness of the thin-walled weak line 314 provided on the outer peripheral edge of the top plate 310 of the cap body 300 and broken by the handle 360 for separation during separation and collection is 0.4 to 0.5 mm. In addition, the angle at which the thin-walled weak line 314 is provided (from position a to position b shown in FIG. 17 ) is set to approximately 240°.

When the thickness is thinner than 0.4 mm, when the inner diameter of the aperture portion 303 of the container body 302 is increased by heat, it may expand due to insufficient rigid force. In addition, when the thickness is thicker than 0.5 mm, the thin-walled weak line 314 becomes difficult to break when separately recovered. Also, as the angle becomes smaller than 240°, it becomes difficult to remove the bottle cap 301 from the container body 302, and as the angle becomes larger than 240°, the rigidity becomes insufficient.

The container main body 302 is sealed by pressing the inner peripheral surface of the inner sealing ring 313 of this embodiment and the diameter part 303 to each other. Further, the container body 302 is sealed by pressing the contact seal ring 312 of the present embodiment and the upper surface of the bore portion 303 of the container body 302 against each other. In addition, the container body 302 is sealed by pressing the inner sealing ring 313 of the present embodiment and the inner peripheral surface of the bore portion 303 against each other. In addition, the container body 302 is sealed by pressing the inclined surface 322 of the present embodiment and the snap ring 304 provided on the outer peripheral surface of the bore portion 303 against each other.

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

(1) According to the ink supply container 15B of this embodiment, the bottle cap 301 is provided with the pressure ring 311 on the bottle cap main body 300 to make the inner peripheral surface of the lower end part and the upper end outer peripheral surface of the aperture part 303 of the container main body 302 to be crimped. The inclined surface 322 or both the pressure ring 311 and the inclined surface 322 are in pressure contact with the outer peripheral surface of the upper end portion of the snap ring 304 provided on the outer peripheral surface of the bore portion 303 of the container body 302 . Then, the thickness and angle of the thin-walled weak line 314 for separation and recovery provided on the outer peripheral edge portion of the top plate 310 of the cap main body 300 are restricted. Therefore, even if the ink supply container 15B filled with ink is exposed to a high temperature of 40° C. for a long time during circulation, ink does not leak from the bottle cap 301 due to pressurization of the container main body 302 .

(2) According to the ink supply container 15B of the present embodiment, the bottle cap 301 is provided with the cover part 370 openable and closable on the bottle cap body 300, and the closure plate 350 is opened and unsealed by the pull ring 354 during use. The top plate 310 and the peripheral wall 320 can be easily detached from the aperture portion 303 of the container main body 302 by breaking the handle 360 . Moreover, according to the effect of the pressure ring 311 provided on the lower surface of the top plate 310 of the bottle cap main body 300 and the inclined surface 322 provided on the inner peripheral surface of the peripheral wall 320, even when it is distributed or stored at a high temperature of 40° C. Even when exposed for a long time, ink leakage does not occur due to pressurization of the container main body 302 .

In addition, it is not limited to above-mentioned embodiment, In the range which does not deviate from the summary, various changes, improvement, etc. can be added and implemented. Modifications are described below.

The inclined surface 322 of this embodiment may be inclined in a tapered direction (so-called reverse taper) opposite to the tapered direction shown in FIG. The outer peripheral surface of the upper end portion of the snap ring 304 is crimped to the outer peripheral surface of the portion 303 .

[Fourth Embodiment]

Next, the ink supply container 15C of this embodiment will be described with reference to the drawings.

FIG. 19 is a cross-sectional view of an ink supply container 15C of the fourth embodiment. In detail, FIG. 19 is a cross-sectional view of main parts when the bottle cap 400 is screwed to the bore portion 470 of the container body 460. As shown in FIG. FIG. 20 is a cross-sectional view of main parts when screwing a bottle cap 400 of another embodiment to a bore portion 470 of a container body 460 . FIG. 21 is a cross-sectional view of main parts showing a case where a bottle cap 400 of another embodiment is screwed to a bore portion 470 of a container body 460 . FIG. 22 is a cross-sectional view of main parts showing another example when a bottle cap 400 is screwed to a bore portion 470 of a container body 460 .

The ink supply container 15C of the present embodiment is composed of a container body 460 and a cap 400 attached to a bore portion 470 of the container body 460. When the bottle cap 400 is attached to the aperture portion 470 of the container body 460, it has rigidity that does not open outward.

The bottle cap 400 of this embodiment is comprised as a plastic bottle cap. As shown in FIG. 19 , on the inner peripheral surface of the peripheral wall 420, a screw thread 421 screwed to the bore portion 470 of the container body 460 is provided. In addition, the cap 400 is configured as a one-piece cap in which a contact ring 412 and an inner ring 413 are provided on the lower surface of the top plate 410 . The bottle cap 400 is manufactured by injection molding using a thermoplastic resin such as polypropylene that is suitable for the purpose of use.

The structure of the bottle cap 400 according to this embodiment is as shown in FIG. On the lower surface of the top plate inside the support protrusion 411 , a contact ring 412 is provided that is tilted inward when the tip is in close contact with the top surface of the bore portion 470 of the container body 460 .

In addition, an inner ring 413 is provided on the lower surface of the top plate inside the contact ring 412 , which is thinner at the tip and thicker at the base, which is in close contact with the upper inner surface of the bore portion 470 of the container body 460 . Thereby, the rigidity of the inner ring 413 is increased and deformation at the time of close contact is prevented. In addition, the cross-sectional shape of the contact ring 412 is formed, for example, in a right-angled triangle shape with a vertical inner side and an inclined outer side as shown in FIG. 19 .

In addition, the structure of the bottle cap 400 of another embodiment is as shown in FIG. 411. On the lower surface of the top plate inside the support protrusion 411 , a contact ring 412A is provided that is tilted outward when the tip is in close contact with the top surface of the bore portion 470 of the container body 460 .

In addition, an inner ring 413 is provided on the lower surface of the top plate inside the contact ring 412A, which is thinner at the front end and thicker at the base, which is in close contact with the upper inner surface of the bore portion 470 of the container body 460 . In addition, the cross-sectional shape of the contact ring 412A is formed, for example, in a right-angled triangle shape with the outer side vertical and the inner side inclined as shown in FIG. 20 .

In addition, the structure of the bottle cap 400 according to another embodiment is as shown in FIG. 411. The lower surface of the top plate inside the support protrusion 411 has two front ends, the outer side and the inner side, and when it is in close contact with the top surface of the aperture portion 470 of the container body 460, the outer front end faces the outer side and the inner front end faces the outer side. Inside poured contact ring 412B.

In addition, an inner ring 413 is provided on the lower surface of the top plate inside the contact ring 412B, which is thinner at the front end and thicker at the base, which is in close contact with the upper inner surface of the bore portion 470 of the container body 460 . In addition, the cross-sectional shape of the contact ring 412B is formed, for example, in an inverted M-shape in which both the outer side and the inner side are vertical as shown in FIG. 21 .

In addition, the structure of the bottle cap 400 of another embodiment is as shown in FIG. 411. A contact ring 412C having an inverted trapezoidal cross-sectional shape is provided on the lower surface of the top plate inside the support protrusion 411 and is in close contact with the top surface of the aperture portion 470 of the container body 460 . In addition, the contact ring 412C is provided larger than the above-mentioned inverted triangle shape of the contact rings 412 and 412A. In addition, the lower surface of the top plate inside the contact ring 412C is provided with a front end that is in close contact with the upper inner surface of the bore portion 470 of the container body 460. The thickness of the inner ring 413 is thicker.

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

(1) According to the ink supply container 15C of the present embodiment, when the bottle cap 400 is thermally shrunk in a state where the cap 400 is screwed to the aperture portion 470 of the container body 460 , the inclined surface-shaped support provided at the upper end inner peripheral corner on the inner side The protruding portion 411 abuts against the upper end outer peripheral portion of the aperture portion 470 to prevent inward contraction. In addition, the cross-sectional shape of the contact ring is formed in a right-angled triangle shape with a vertical inside and an inclined outside in the contact ring 412, a right-angled triangle shape with a vertical outside and an inclined inside in the contact ring 412A, and a right-angled triangle shape in the contact ring 412B. The inverted M-shape whose inner sides are all vertical is formed in an inverted trapezoidal shape in the contact ring 412C. Then, under the condition that the top surface of the aperture portion 470 is in close contact with the front end of the contact ring, the front end falls towards the vertical side respectively towards the inside, the outside or any side of both sides, and the top surface of the aperture portion 470 is closer to the top surface of the aperture portion 470 by the spring effect. Fully intimate contact. Further, the inner ring 413 is in close contact with the upper inner surface of the bore portion 470 of the container body 460 . Therefore, ink leakage can be prevented.

(2) According to the ink supply container 15C of the present embodiment, since the inner ring 413 of the bottle cap 400 has a thinner end portion to impart flexibility and a thicker root portion to provide strength, the bottle cap 400 When screwed and attached to the aperture portion 470 of the container main body 460, fastening is easy, and when the bottle cap 400 screwed to the aperture portion 470 is removed, it is easy to open. Therefore, the operability of opening and closing the bottle cap 400 is improved.

(3) In the conventional metal bottle cap, for example, the screw thread 471 of the container main body 460 and the top surface of the bore portion 470 are in surface contact. However, since the plastic cap 400 of the ink supply container 15C of the present embodiment is in line contact, it is hardly affected by the ink, and the cap 400 is easy to open.

(4) According to the ink supply container 15C of the present embodiment, the cap 400 has an enlarged cross-sectional shape of the contact ring 412C in an inverted trapezoidal shape, and the inner ring 413 has a thicker base. Accordingly, when screwing and attaching the cap 400 to the aperture portion 470 of the container body 460 , the closing torque can be rapidly increased to stably attach the cap 400 to the aperture portion 470 .

(5) According to the ink supply container 15C of this embodiment, the bottle cap 400 is a bottle cap after injection molding of thermoplastic resin, and since the shape accuracy of the thread 421 is better than that of a metal bottle cap, the pressing by a capping machine Cover adaptability is good. In addition to this, the single-piece type does not require a separate gasket, which contributes to the reduction of manufacturing costs.

In addition, it is not limited to above-mentioned embodiment, In the range which does not deviate from the summary, various changes, improvement, etc. can be added and implemented. Modifications are described below.

FIG. 23 is a cross-sectional view showing an inner ring 413A as a modified example.

The inner ring 413 of this embodiment described above has a structure in which the thickness of the front end portion which is in close contact with the upper inner surface of the bore portion 470 of the container body 460 is thin, and the thickness of the root portion is thick. However, as shown in FIG. 23 , the inner ring 413A of this modified example is provided with a guide portion 414 having an inwardly inclined tapered surface for guiding toward the outer surface side of the tip portion and leading into the upper inner surface of the bore portion 470 . In this case, the root portion of the inner ring 413A may be in close contact with the upper inner surface of the aperture portion 470 . Thereby, the ease of fastening of the bottle cap 400 can be improved.

FIG. 24 is a cross-sectional view showing the lower end surface 422 and the shoulder 472 as a modified example.

The above-mentioned bottle cap 400 of this embodiment has the support protrusion 411 in contact with the upper end outer peripheral edge of the aperture portion 470, the contact ring 412 closely contacting the top surface of the aperture portion 470, and the upper inner surface of the aperture portion 470. The three points of the inner ring 413 that are in contact are sealed. In addition, the contact ring 412 also has the function of abutment in screw fastening. However, as shown in FIG. 24 , a structure in which sealing is performed only by the inner ring 413 is also possible. In this case, it is also possible to have a structure in which the contact ring 412 is not provided, and the shoulder 472 protruding in the circumferential direction of the lower part of the thread 471 of the bore part 470 is provided so that the lower end surface 422 of the peripheral wall 420 of the bottle cap 400 is in contact with the shoulder. Portion 472 connects.

[Fifth Embodiment]

Next, the ink supply container 15D of this embodiment will be described with reference to the drawings.

FIG. 25 is a cross-sectional view of an ink supply container 15D of the fifth embodiment. In detail, Fig. 25 is a cross-sectional view showing the sealing structure of the mouth of the liquid container. Fig. 26 is a cross-sectional view showing the structure of the groove-shaped portion of the cover. Fig. 27 is a cross-sectional view showing a state in which a sealing structure for the mouth of the liquid container is provided in the box-shaped container.

As shown in FIGS. 25 and 27 , the ink supply container 15D of the present embodiment is composed of a plastic box-shaped container body 501 , a mouth 504 fixed to the opening 503 of the container body 501 , and a cap portion screwed into the mouth 504 . 505 composition. The mouth part 504 is formed of, for example, low-density polyethylene, and the cover part 505 is formed of, for example, polypropylene.

The mouth portion 504 is composed of a base portion 506 fitted into the opening portion 503 of the container main body 501, a cylindrical spout portion 507 protruding from the outside with screw threads 507a, a closing plate portion 508 integrally formed with the inner wall of the spout portion 507, and a protrusion. The pull ring 509 provided on the closing plate portion 508 constitutes.

A flange 506 a extending along the inner wall of the container main body 501 is formed on the base portion 506 , and the flange 506 a is fixed to the inner surface side of the opening portion 503 . On the outer periphery of the base portion 506, a fixing groove portion 506b into which the opening portion 503 is fitted is formed. The sprue portion 507 is formed in a cylindrical shape protruding straight upward from the base portion 506 , and the outer peripheral edge portion 507 b of the upper end portion of the sprue portion 507 is formed to have a circular cross section.

The closing plate portion 508 closes the inner side of the sprue portion 507 , and a double thin-walled portion 508 a for cutting is formed on the inner wall portion of the closing plate portion 508 . The double thin-walled part 508a is formed along the spout part 507 in a pear shape with a small circle and a large circle connected by an arc, and an arc-shaped opening is formed by inserting a finger into the pull ring 509 on the upper part of the thin-walled part 508a and pulling it. on the closing plate portion 508 .

In this embodiment, the cap part 505 and the mouth part 504 are both screw-in type. However, the mouth part 504 and the cover part 505 may be a fitting type. The cover portion 505 is composed of an outer peripheral wall portion 510 positioned outside the sprue portion 507 and a top plate portion 511 at an upper end portion of the outer peripheral wall portion 510 . On the inner wall surface of the outer peripheral wall portion 510, a screw thread 510a that is screwed into the thread 507a of the sprue portion 507 is formed.

A cylindrical inner ring 513 supporting the inner wall side of the spout 507 protrudes inside the outer peripheral wall 510 , and a groove-like portion 512 is formed between the outer peripheral wall 510 and the inner ring 513 . The upper end portion of the sprue portion 507 is inserted into the groove portion 512 . As shown in FIGS. 25 and 26 , the front end portion of the inner ring 513 is formed in a wedge-shaped cross section so as to easily guide the upper end portion of the sprue portion 507 .

The groove portion 512 is formed deep so that the upper end of the spout portion 507 does not reach the back bottom 512 a of the groove portion 512 when the cap portion 505 is screwed into the spout portion 507 . The width M1 of the deep bottom portion 512a of the groove-shaped portion 512 is formed narrower than the width M2 of the opening near the thread 507a. Further, a notch portion 512b having a triangular cross-section is formed in the deep bottom portion 512a of the groove portion 512 so that the inner ring 513 can be easily elastically deformed.

A bulging portion 512 c having an arc cross-sectional shape is formed at a corner portion between the inner side portion of the groove portion 512 and the outer peripheral wall portion 510 . The bulging portion 512c protrudes from the outer peripheral portion 507b of the upper end portion of the sprue portion 507. As shown in FIG. The bulging portion 512c and the outer peripheral edge portion 507b at the upper end of the spout portion 507 are both formed in circular arc-shaped cross-sections. Therefore, when the bulging portion 512c contacts the outer peripheral edge portion 507b, the entire circumference of the spout portion 507 is Tight fit to ensure airtightness.

In addition, in this embodiment, both are made into a circular cross-sectional shape, but only one surface may be made round. In addition, the inclined surface of the bulging portion 512c and the outer peripheral edge portion 507b is formed by an arc-shaped cross-sectional shape in this embodiment, but it may be a part of an ellipse, a curve with a certain curvature, or a curve without curvature. Or a straight slope.

In short, when the cap 505 is screwed or press-fitted or fitted and fixed to the mouth 504, only the outer peripheral edge 507b of the upper end of the sprue 507 is inserted between the bulge 512c and the inner ring 513, and the What is necessary is just to make the upper end part of the spout part 507 enter toward the back side of the groove part 512, and to make the adhesion strength of both gradually increase.

As described above, the ink supply container 15D of the present embodiment has the cylindrical spout portion 507 protruding from the container main body 501, that is, the box-shaped container, and the lid portion 505 sealing the spout portion 507. Then, between the outer peripheral wall portion 510 of the cover portion 505 and the inner ring 513, a groove-shaped portion 512 that allows the upper end of the spout portion 507 to enter is formed so that the groove portion 512 does not reach the upper end of the spout portion 507. The way the part is formed deeper. The width M1 of the deep bottom portion 512 a of the groove-shaped portion 512 is formed to be narrower than M2 on the opening edge side of the groove-shaped portion 512 . In addition, it is characterized in that a bulging portion 512c facing the outer peripheral edge portion 507b of the upper end portion of the sprue portion 507 is provided at the corner portion of the inner side portion of the groove-shaped portion 512 and the outer peripheral wall portion 510, and the bulging portion 512c has a Arc-shaped cross-section.

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

(1) According to the ink supply container 15D of the present embodiment, when the spout portion 507 is inserted toward the inner side of the groove-shaped portion 512 of the cap portion 505 and screwed into the cap portion 505, the outer peripheral wall portion 510 and the inner ring 513 can be held together. The two surfaces of the upper end portion of the sprue portion 507 are sandwiched and guided to the rear side. At this time, the upper end of the spout 507 does not reach the deep bottom 512a of the groove 512, and the inner ring 513 is bent by the notch 512b, so the upper end of the spout 507 is fully inserted into the groove 512. On the back side, the outer peripheral edge portion 507b of the upper end of the spout portion 507 and the bulging portion 512c of the cover portion 505 are in strong contact with each other over the entire circumference of the spout portion 507 to seal the spout portion 507 . Therefore, even if the lid part 505 is tightened with a relatively light force, there is no possibility of ink leakage, and the spout part 507 can be sealed reliably.

(2) According to the ink supply container 15D of the present embodiment, the close contact force between the cap portion 505 and the spout portion 507 becomes stronger, so that precise alignment between the upper end portion of the spout portion 507 and the groove-shaped portion 512 of the cap portion 505 is unnecessary. In combination, the allowable range of precision of the molding die can be expanded, and thus the cost of the molding die and the sealing structure including the mouth portion 504 of the container body 501 and the lid portion 505 can be promoted.

Next, a first modification example will be described.

Fig. 28 is a cross-sectional view showing the sealing structure of the mouth of the liquid container according to the first modification.

In this modified example, a cap portion 522 is screwed into a spout portion 521 of a plastic container body 520 , and screw threads 521 a are formed on the outer peripheral surface of the spout portion 521 .

The container main body 520 can be formed of any resin such as polypropylene, polyethylene terephthalate, polyvinyl chloride, and is formed of polyethylene terephthalate in this modified example. The cover portion 522 is formed of polypropylene. Screw grooves into which the screw threads 521 a are screwed are formed inside the cover portion 522 . An inner ring 523 is formed inside the cover part 522 , and a groove-shaped part 524 is formed between the inner ring 523 and the outer peripheral wall part 522 a of the cover part 522 .

The outer peripheral edge portion 521b of the upper end portion of the sprue portion 521 is formed to be relatively round. The groove portion 524 has a depth such that the upper end portion of the sprue portion 521 does not reach the back bottom portion 524a. In the corner portion of the back bottom 524a of the groove-shaped portion 524 and the outer peripheral wall portion 522a, the portion adjacent to the outer peripheral edge portion 521b of the upper end portion of the spout portion 521 is inclined relative to the direction in which the spout portion 521 protrudes. A bulge 525 having a circular arc cross section is formed. The width M3 of the groove-shaped portion 524 on the back bottom 524 a side is formed narrower than the width M4 of the groove-shaped portion 524 on the opening edge side.

According to the ink supply container 15D of this modified example, the cap made of hard polypropylene is screwed to the plastic container body 520 (spout port 521) made of relatively hard polyethylene terephthalate. part 522, it is difficult to loosen, and good sealing performance can be obtained.

Next, a second modified example will be described.

Fig. 29 is a cross-sectional view showing the sealing structure of the mouth of the liquid container according to the second modification.

In this modified example, a hinge bottle cap is used instead of the screw-in type cap part 505 of the fifth embodiment described above.

The opening 530 is fitted to the base 532 of the cork 531 so that the opening 530 formed in the container body made of plastic is fixed to the cylindrical cork 531 . The spout portion 533 protrudes upward from the base portion 532 , and a fixing ring 534 is fixedly connected to the outer periphery of the spout portion 533 .

The fixing ring 534 integrally forms the cover part 536 via the hinge 535 made of resin, and constitutes a hinge bottle cap. The lid portion 536 is protrudingly provided with an inner ring 537 fitted inside the spout portion 533 .

A groove-shaped portion 538 is formed between the inner ring 537 and the outer peripheral wall portion 536 a of the cover portion 536 , and the spout portion 533 is inserted into the groove-shaped portion 538 . The back bottom portion 538a of the groove portion 538 is formed deep so that the upper end portion of the sprue portion 533 does not abut.

The outer peripheral edge part 533a of the upper end part of the injection port part 533 is formed so that it may become a circular arc cross section. A protruding portion 539 having an arcuate cross section is formed near the rear bottom portion 538 a of the groove portion 538 so as to be inclined with respect to the protruding direction of the spout portion 533 . Then, the bulging portion 539 is brought into close contact with the outer peripheral edge portion 533 a of the upper end portion of the sprue portion 533 .

Next, a third modified example will be described.

Fig. 30 is a cross-sectional view showing the sealing structure of the mouth of the liquid container according to the third modification.

In this modified example, a cylindrical stopper 541 is fixed to an opening 540 formed in a container body made of plastic.

An opening 540 formed in the container body is fitted into a base 542 of a polypropylene stopper 541. A stepped portion 542a is formed above the base portion 542, and a spout portion 543 protrudes above the stepped portion 542a. A lid portion 545 is integrally formed on the peripheral portion of the stepped portion 542a of the base portion 542 via a resin hinge 544, constituting a hinge cap. An inner ring 546 that fits inside the spout portion 543 protrudes from the inside of the cover portion 545 .

A groove-shaped portion 547 is formed between the inner ring 546 and the outer peripheral wall portion 545a. Then, the sprue portion 543 led to the inner ring 546 is inserted into the groove portion 547 . The back bottom portion 547 a of the groove portion 547 is formed deep so as to abut against the upper end portion of the spout portion 543 . The outer peripheral edge part 543a of the upper end part of the sprue part 543 is formed so that it may become a circular arc cross section. A bulging portion 548 having an arc-shaped cross section is formed at a corner portion between the back bottom portion 547 a and the outer peripheral wall portion 545 a of the groove portion 547 .

In this modified example, since the pre-opened spout portion 543 and the lid portion 545 are integrally formed via the hinge 544, a hard material can be used, and a hinge cap that also satisfies the adaptability of the hinge portion can be integrally formed.

In addition, the sprue part 543 can not be broken as long as it is not made of a soft material by pulling the ring to break the opening. Therefore, it must be formed with a soft material, but it does not meet the adaptability of a hinged bottle cap that requires rigidity. Soft materials tend to loosen the spout portion 543 and the cover portion 545 , and cannot prevent liquid leakage. However, in this modified example, since the previously opened spout part 543 is used, a hard material can be used, and a hinge cap that also satisfies the adaptability of the hinge 544 can be integrally molded.

According to the fifth embodiment and the first to third modifications described above, the following effects can be obtained.

(1) According to the ink supply container 15D of the present embodiment and the modified example, when the spout portion is inserted toward the back of the groove-shaped portion of the cap portion and the cap portion is fixed to the spout portion, due to the bulging portion of the groove-shaped portion and the The inner ring can be guided inward while sandwiching both sides of the upper end of the spout, so that the inner edge of the upper end of the spout is in close contact with the inner ring, and the outer peripheral edge and bulging portion of the upper end of the spout are in contact with each other. The entire circumference of the sprue portion adheres strongly, and the spout portion can be sealed.

(2) According to the ink supply container 15D of the present embodiment and the modified example, the adhesive force between the cap and the spout becomes stronger, so even if the cap is tightened with a light force, there is no fear of ink leakage and the Securely seal the spout. In addition, in order to ensure flexibility, one of the spout portion and the cap portion needs to be formed harder than the other, and the spout portion and the cap portion can be integrally molded. Furthermore, it is not necessary to precisely fit the upper end of the spout portion and the groove portion of the cap as in the past, and the allowable range of precision of the molding die can be expanded, so that the sealing of the molding die and the mouth of the container can be promoted. Inexpensive construction.

(3) According to the ink supply container 15D of this embodiment and the modified example, it is not necessarily necessary to form the cap part harder than the spout part, at least even if the spout part and the cap part made of hard materials are respectively used. Get a full seal. Therefore, integral molding of the spout part and the cap part can be performed.

(4) According to the ink supply container 15D of the present embodiment and the modified example, since the spout portion has an opening that is opened in advance, a hard material can be used for the spout portion, and it can be integrally formed by using a hard material. A hinged bottle cap with a hinge portion having sufficient bending strength.

In addition, it is not limited to the said 5th embodiment and the 1st - 3rd modification, In the range which does not deviate from the summary, various changes, improvements, etc. can be added and implemented. Modifications are described below.

31 is a cross-sectional view showing a sealing structure of a mouth of a liquid container according to a fourth modification.

This modification is combined with the bulging portion 512c, and the inner ring 513 and the corner portion of the inner bottom 512a of the groove-shaped portion 512 (the outer peripheral base of the inner ring 513) are formed to face the bulging portion 512c. The new bulging portion 513a of the cross-sectional shape. The bulging portion 513 a protrudes from the inner peripheral edge portion of the upper end portion of the sprue portion 507 . Thereby, the new bulging part 513a and the inner peripheral part of the upper end part of the spout part 507 can be brought into close contact with the existing bulging part 512c and the outer peripheral part 507b. Thereby, sealing performance can be improved.

In FIG. 31, instead of forming the existing bulging portion 512c provided at the corner of the groove-shaped portion 512 and the outer peripheral wall portion 510, there may be only a new bulging portion 513a formed at the bottom of the outer peripheral root of the inner ring 513. Structure. Also according to this structure, the bulge part 513a and the inner peripheral edge part of the upper end part of the spout part 507 can be made to adhere closely, and sealing property can be ensured.

The structure and operation of the ink supply container have been described above, but the method of use described below is also possible.

The above-mentioned ink supply container 15 of the first embodiment to the ink supply container 15D of the fifth embodiment are used for supplying ink from the ink supply container to the ink tank 9 . However, the present invention is not limited thereto, and when ink is supplied to another ink supply container instead of the ink tank 9, each of the above-mentioned ink supply containers can also be used, and the same effect can be obtained by the same method as in the present embodiment. . In this way, for example, when the supply to the ink tank is switched to a new ink supply container, when the previous ink supply container can no longer be supplied to the ink tank, etc., from the previous ink supply container to the new ink supply container, The ink supply container supplies ink, and the ink in the conventional ink supply container can be used without wasting.

In the ink supply container 15 of the first embodiment to the ink supply container 15D of the fifth embodiment described above, ink is supplied to each ink supply container. However, it is not limited to this, and a cleaning agent may be filled instead of ink.

Claims (5)

1. An ink supply container, characterized in that, The ink supply container is an ink supply container filled with ink and a cap is attached to the bore portion of the container main body for sealing, The ink supply container is provided with a disk-shaped fitting gasket, and the disk-shaped fitting gasket has elasticity and is locked on the lower surface of the top plate of the bottle cap, The disc-shaped fitting gasket has: an outer fitting ring disposed on the outer peripheral portion of the lower surface of the top plate of the bottle cap; and an inner fitting ring disposed parallel to the inner side of the outer fitting ring, The inner peripheral portion of the upper port portion of the bore portion is provided with a tapered surface opened downward and inwardly. 2. An ink supply container, characterized in that, The ink supply container includes a container body in which ink is sealed, and a cap that fits over the mouth of the container body in a screwed state, The bottle cap has: a gasket for sealing formed on the inner surface side of the top plate portion; and A thread for screwing is formed on the peripheral wall of the skirt hanging down from the peripheral edge of the top plate, The liner has: a sealing portion capable of sealing over the entire circumference from a top surface portion near an upper end of the mouth of the container up to at least a part of an outer surface portion; and an inner annular rib, the outer diameter of the inner annular rib is less than or equal to the inner diameter near the upper end of the mouth of the container, Between until the bottle cap is rotated at least 80° in the direction of uncapping from the fully screwed position, so that the lower end of the outer surface portion of the inner annular rib is not located at a lower end than the container mouth. The innermost end portion of the inner surface portion in the vicinity of the upper end is configured so that it is positioned upward. 3. An ink supply container, characterized in that, The ink supply container includes a container body and a cap attached to a bore portion of the container body, The bottle cap includes: a bottle cap main body, and a cover portion connected to the outer peripheral surface of one side of the bottle cap main body via a hinge, The bottle cap main body has: The pull ring is used in use to block the opening of the blocking plate of the injection cylinder for blocking the ink injection; The gripper for separation is used when recycling separately, so that the top plate and the surrounding wall of the bottle cap main body are broken and separated; The contact sealing ring is arranged on the lower surface of the top plate of the bottle cap body and is in close contact with the upper surface of the aperture portion; and The pressure ring is arranged on the outer side of the contact sealing ring, so that the inner peripheral surface of the lower end is in pressure contact with the outer peripheral surface of the upper end of the diameter portion. 4. An ink supply container, characterized in that, The ink supply container includes: a container body, and a cap screwed to the bore portion of the container body, The bottle cap has: an inclined-surface-shaped supporting protrusion is provided at the inner upper end inner peripheral corner portion of the inner side, and abuts against the upper end outer peripheral edge portion of the aperture portion; The contact ring is provided on the lower surface of the top plate inside the supporting protrusion, and the front end is in close contact with the top surface of the aperture part and is tilted toward any one of the inner side, the outer side, and both sides; and The inner ring is provided on the lower surface of the top plate inside the contact ring, and is in close contact with the upper inner surface of the aperture portion, and the thickness of the front end portion is thin and the thickness of the root portion is thick. 5. An ink supply container, characterized in that, The ink supply container includes a container body, a cylindrical spout protruding from the container body, and a cap fixed to the spout to seal the spout, The cover has: an inner ring formed on the inner side of the peripheral wall; and a groove-shaped portion formed between the outer peripheral wall portion and the inner ring, the upper end portion of the sprue portion can enter the groove-shaped portion, At the corner portion between the inner bottom of the groove-shaped portion and the outer peripheral wall portion, at the portion facing the outer peripheral portion of the upper end portion of the sprue portion, there is provided a bulge toward the outer peripheral portion. Protruding part.