CN1025170C - Ink cartridge and inkjet device using the same - Google Patents

Abstract

An ink cartridge includes a casing; an ink container in the casing; an ink absorbing material in the casing; an ink supply port in communication with the ink container to supply the ink therefrom to an outside of the case; an ink receiving port in communication with the ink absorbing material; and a projection from the casing adjacent the supply port.

Description

The present invention relates to an ink cartridge, which is detachably mounted in the inkjet device, and an inkjet device using the ink cartridge.

Various recording systems are known for recording on paper, OHP sheets, cloth or other recording materials. These recording systems include, for example, dot-line, heat-sensitive, heat-conductive, and ink-jet. Among these systems, the ink-jet type recording system has been particularly attracting attention recently because of its low cost and low noise. In the inkjet recording system, the ink cartridge (ink supply source) is detachably installed on the main body of the recording device by the operation of the operator, so that it can be filled with the required ink before the ink is exhausted during the recording operation. ink.

In the ink system of this system, when the ink cartridge is loaded into the main body of the recording device, a hollow needle protruding from the main body penetrates into the ink container of the bag type to provide a gap between the main body and the ink supply system. Turn on the ink. This requires the main machine's hollow needle to be positioned where the ink container is placed, so the needle will become dirty with ink. Then, a cover is installed adjacent to the position where the ink container is placed to prevent the operator's hand from directly approaching the needle during maintenance work or the like. Means are provided for allowing the lid to open only when the ink container is inserted. In practice, however, the operator's hand can easily access this latch area to open the lid. If the device is configured such that it is difficult to open, the device is more expensive and takes up more space.

The prior art is described below.

U.S. Patent No. 4,074, which was approved and announced on February 14, 1978, 284 discloses an ink supply system in which the seal of the main unit is pushed down by the front end of the ink cartridge 12, which is loaded into the main unit. In doing so, the needle of the main unit enters the ink cartridge 12 so that an ink connection is established between the ink supply system of the main unit under the soft shell ink reservoir of the ink cartridge. The printhead is then supplied with ink from the cartridge. This system has the disadvantage that, during maintenance operations or the like, the needles are easily exposed when the operator touches the seal. Japanese Utility Model Patent Application Publication No. 180734/1986 (Application No. 62973/1985) discloses an inkjet recording apparatus in which the front edge of the ink cartridge 2 is locked by the latch of the main body Removal, or the latch of the host is retracted by means of the front edge of the ink cartridge 2, to release a movable member 13 or an air bag adjacent to the inlet of the ink cartridge, thereby allowing the ink cartridge to be loaded into the host. Through the above-mentioned actions, the hollow needle of the host enters the ink cartridge, thereby providing ink. This system also suffers from the disadvantage that the needle is easily exposed when the operator accesses the latch or closure member.

On the other hand, there are known ink cartridges in the prior art.

U.S. Patent No. 4,119,034 (announcement date is October 10, 1978) discloses an ink supply tank, which is detachably mounted on the main machine, and it includes an integral flexible ink container and residual ink collection room.

U.S. Patent No. 4,695,824, issued on September 22, 1987, discloses an ink storage device, which is detachably mounted on the main machine, and which includes an integral flexible ink container and remaining ink absorbing material. The four sides on the surface of the ink cartridge housing communicated with the pipe protrude outwards.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an ink cartridge which can prevent contamination by ink contained in the ink cartridge.

Another object of the present invention is to provide an inkjet recording apparatus which can Prevent misuse.

Still another object of the present invention is to provide an ink cartridge and an ink jet recording apparatus using the ink cartridge, wherein a projection is provided for retracting a protective cover when the ink cartridge is loaded into a main body of the recording apparatus.

Still another object of the present invention is to provide an ink cartridge and an inkjet recording apparatus using the ink cartridge, wherein the ink cartridge has a protrusion to prevent the ink cartridge from stabilizing when the ink output area of the ink cartridge is faced downward. standing.

A further object of the present invention is to provide an ink cartridge and an ink jet recording apparatus using the same, wherein the ink cartridge has a projection for preventing the ink outlet from contacting the table when the ink cartridge stands on the table.

A further object of the present invention is to provide an ink cartridge and an ink jet recording apparatus using the ink cartridge, which are inexpensive to manufacture.

These above objects and other features and advantages of the present invention will be more clearly seen from the following description of the preferred embodiment with reference to the accompanying drawings.

Fig. 1 is a main body view of an ink jet recording apparatus according to an embodiment of the present invention, without a top cover in this view.

2A and 2B are perspective and partial sectional views of the structure of the ink cartridge mounting area of the ink jet recording apparatus.

Figure 3 is a sectional view of an ink cartridge according to an embodiment of the present invention.

Fig. 4 is a front view showing the interconnection between the ink cartridge and the main body of the recording apparatus.

Fig. 5 shows the positional relationship of this connection.

6A, 6B, 6C, 6D and 6E show inappropriate situations that occur when the positional relationship in this embodiment is not employed.

Fig. 7A and 7B are the ink cartridge and the position after further modification to the structure shown in Fig. 4 and Fig. 5 A zoomed-in view of the relationship.

8A and 8B are a schematic block diagram of a control system for use with the structure shown in Fig. 7 and a flow chart showing its sequence of operations.

Figure 9 is a bottom view of the cartridge insertion area.

10A, 10B and 11 are cross-sectional views of an ink cartridge insertion area.

Fig. 12 is a perspective view of an ink cartridge.

Fig. 13 shows the situation where the ink cartridge is standing on a table.

Figure 14 is a perspective view of an ink cartridge with a pull seal.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a perspective view of an ink jet recording apparatus according to an embodiment of the present invention, in which the casing of the apparatus has been removed. This inkjet recording apparatus includes a sheet-shaped recording head 1 and a carriage 2 for mounting the recording head 1 that moves the recording head in a scanning manner along a recording medium (a sheet of paper). As will be described in detail hereinafter, a support for detachably mounting the recording head 1 and a cover (shown in dashed lines) for protecting a substrate are provided on the carriage 2, said The substrate constitutes a part of the recording head 1, on which a circuit diagram of a driving circuit of the recording head or the like is printed.

There are 64 ejection outlets on the end face of the recording head 1, and these ejection outlets communicate with the corresponding ink channels. A common liquid chamber is provided behind these ink channels for supplying ink to these corresponding ink channels. Each ink channel corresponds to each of the 64 ejection outlets, the thermal energy generated by the electrothermal converter prompts ink droplets to be ejected from the ejection outlets, and the electrode leads provide electrical energy to the electrothermal converter.

Electrothermal transducers and electrode leads are formed on a substrate made of silicon or the like through a thin film forming process. On the bottom plate, ejection outlets, ink passages, and common ink chambers are formed with layered partition walls and a top plate or similar members made of resin or glass material. A driving circuit is also printed on the rear of the recording head 1 to drive the electrothermal transducer according to the recording signal.

On the carriage 2, at a position behind the mounting position of the recording head 1, a connector substrate 12 is provided via the connector 9. As shown in FIG. The connector substrate 12 has a connector 9 connected with the recording head 1 and a connector connected with a flexible cable, and the flexible cable is connected with the control circuit of the host control system 400 (see FIG. 8A ). There are capacitors and resistors or similar components on the connector substrate 12 , and the function of these components is to compensate the voltage drop and prevent the introduction of interference through the flexible cable. As will be described in detail hereinafter, the connector substrate 12 is supported on a slider and slides together with the opening and closing movement of the cover so that the connector 9 comes into contact with the recording head 1 .

The bracket 2 is combined with a guide shaft 3 through a joint portion 2a for sliding and for rotation. The length of the guide shaft 3 is greater than the width of the recording paper 6, and the extending direction of the guide shaft 3 is perpendicular to the feeding direction of the recording material. The bracket 2 is connected to a part of a belt (not shown) which extends in a direction parallel to the guide shaft 3 . When the belt is driven by a carriage motor (not shown), the carriage 2 moves along the guide shaft 3 in a scanning manner. The carriage 2 and the recording head 1 rotate along the guide shaft 3 by their own gravity, and their gravity can also be used to push the paper limit plate 8 through a slide 17 (this will be described below), and the slide 17 is located on the carriage. 2, it slides over the paper stopper. Thus, regardless of the thickness of the recording paper 6, there is a predetermined distance between the recording head 1 and the recording paper 6.

The recording paper 6 is sent out automatically or manually from a paper feeding box (not shown), and then enters the main body of the recording device through a paper inlet 7, which is composed of an upper paper guide plate 7a and a lower paper guide plate 7b constitute. The extended portion of the upper paper guide plate 7a constitutes a curved paper limiting plate 8 . The paper stop plate 8 pushes the recording paper 6 toward the platen roller 5 . The material is selected in such a way that the gap between the paper limit plate 8 and the recording paper 6 is generated under the action of thrust. The friction is smaller than the friction between the paper feed roller 5 and the recording paper 6 . The lower paper guide plate 7b extends to such a position that the paper regulating plate 8 is parallel to the platen roller 5 .

The recording paper 6 is fed upward line by line from the paper inlet 7 along with the rotation of the paper feeding roller 28. The recording paper 6 slides on the plate-like platen 7 while the gap between them is maintained at a predetermined amount. The pinch roller 29 is pressed against the circumference of the paper feed roller 5 by the elastic force of the spring piece 29a.

The recording head 1 ejects ink droplets to the recording area on the recording paper during the scanning process, thus realizing a one-line recording operation. By repeating this operation and feeding the paper line by line, a single character, a plurality of characters, an image or the like can be recorded on the recording paper. The recording paper 6 that has been printed with images and texts is output to an output paper holder (not shown) through the output roller 4 and gears 40A, 40B located above the transport path. With respect to the five pairs of delivery rollers 4, five pairs of gears 40A and 40B are provided. Between these gears there is a gear cleaner, the support for supporting the gear cleaner and the gear cleaner are omitted in FIG. 1 . The gear 40A presses the recording paper 6 to the output roller 4; the gear 40B cooperates with the platen 7 to define the conveying direction of the recording paper 6. The output roller 4 rotates at a peripheral speed greater than that of the paper feed roller 5, so that the recording area of the recording paper 6 extends upwards, thereby preventing the recording paper 6 from leaving the platen 7, thus ensuring correct printing in the recording area. record operation.

A home position is contiguous to the scanning area of the recording head 1, and various structures for restoring the ejection function of the recording head 1 are provided next to the home position. The structure includes: a scraper 26 that removes dirt such as ink droplets and dust on the ejection end face with the ejection outlet by wiping; an ink absorbing member 25 that removes ink droplets on the ejection end face by absorbing liquid; and a Covered on the spray end face, so as to seal the spray end face, its function The result is that ink ejection is stopped and ink is sucked. These above-mentioned components are integrally supported on a support member 14, and this support member 14 can move toward the moving area of the recording head 1, and can also move toward the direction away from the moving area of the recording head 1, thereby realizing the corresponding movement at the right moment. operate. The ink suction operation by the cap 13 is performed by means of a pump 24 which communicates with the cap 13 through the hollow portion of the movable support 14 and a tube. When the recording head is covered by the cover 13, the hole on the cover arm 7 installed on one end surface of the cover support engages with a protrusion on the bracket, thereby preventing the recording head 1 from rotating backwards, thus ensuring The cover 13 is covered on the injection end face.

Utilize the rotational driving force of feed motor 21 to rotate paper feed roller 5 and paper discharge roller 4, and manipulate the ejection recovery mechanism, more specifically, to manipulate the movement of cover 13, scraper 26, ink-absorbing member 25 and pump 24 . The feed motor 21 is installed on the frame of the main engine, and the rotational driving force of the motor 21 is transmitted to the gear train 19 at first. In the gear train 19, the effect of the selector switch is realized by the movement of an unshown selector gear, and the manipulation of the selector gear is carried out in connection with the scanning movement of the recording head 1. Motion is terminated when it reaches the start position or when it reaches the spray recovery position. The rotational motion of the gears in the gear train 19 is transmitted to the paper output roller 4 and the paper delivery roller 5 through the intermediate wheel 20 . The rotational movement of the gears in the gear train 19 is also transmitted to the cover 13 or the like via the cam 16 and to the pump 24 via the gear 22 and the cam 23 .

Ink is supplied to the recording head 1 from an ink cartridge 27 mounted on the main body of the recording apparatus through a hose 100 (see FIGS. 1, 2 and 4) movable following the carriage 2. More specifically, ink is supplied from the ink cartridge 27 to the recording head 1 through a tube 100 communicating with the hollow needle 314 and the recording head 1 . According to the mutual connection between the rest position sensor 11 of the carriage 2 and a rest position detection signal transmitter 31 adjacent to an end of the carriage 2 moving area, a reference position is set, and the reference position Set as the base point to count the number of driving steps of the carriage motor (not shown), and use this method to detect the position of carriage 2. These operations described above are controlled by the controller 400 (see FIG. 8A ) of the host computer.

The ink cartridge 27 is mounted on the mounting area 30 . The mounting area 30 and the ink cartridge 27 will be described below.

Figures 2A and 2B illustrate the assembly area 30 of the ink cartridge. In FIG. 2A, indicated by reference numeral 302 is an ink cartridge insertion area for receiving the ink cartridge 27. As shown in FIG. The contact bracket 304 is used to install the leaf spring contacts 306A and 306B, and the leaf spring contacts 306A, 306B are used to identify the information on the ink cartridge 27 . The bracket 304 is assembled into the insertion area 302 through the coupling between the locking member 308 and the insertion area 302 . FIG. 2A shows the situation before the bracket 304 is combined with the insertion area 302 . Connector 312 connects contacts 306A, 306B to controller 400 of the host computer.

A hollow needle 314 is threaded into a soft shell container of ink and has three holes 316 at the end of the needle 314. The other end of the needle 314 is connected to the ink supply tube 100 , and the other end of the tube 100 is connected to the common ink chamber in the head chip 110 of the recording head 1 . A remaining ink amount detecting device can be placed on an appropriate part of the ink supply system.

A tube 318 for receiving the remaining ink enters the ink cartridge 27 through an opening 350 (see FIG. 4) and supplies the remaining ink to the ink-absorbing material 344. Residual ink is produced by replenishing ink from the ink supply system or from the common ink chamber or by the inkjet recovery process.

On each side of the insertion area 302 is provided a latch 320 , the function of the latch 320 is to fix the ink cartridge 27 . As shown in FIG. 2B , when inserting the latch 320 , the joint portion 322 of the latch 320 is bent by its own flexibility, and then inserted into the side of the ink cartridge 27 to combine with it, so that the ink cartridge 27 can be inserted. When the notch 332 of the ink cartridge 27 When reaching the position where the latch 320 is located, the joint portion 322 of the latch returns to its original state by its own elasticity, thereby making the latch 320 locked in the middle of the notch 332, and like this, the ink cartridge 27 is fixed in place.

The ink cartridge 27 will be described below with reference to FIGS. 3 and 4 .

The ink cartridge 27 includes a flexible bladder container 340 for containing ink, and the ink cartridge 27 is provided with a plug 342 made of rubber or similar material. The ink container 340 is sealed with a plug 342 . When the ink cartridge 27 is packed into the assembly area 30 of the main machine, the needle 314 on the main machine penetrates into the plug 342, and the degree of penetration needs to reach a sufficient amount, so that the circulation of the ink can be realized. An annular ring 342b protects the rubber stopper 342 . The ink cartridge 27 also includes an ink absorbing material 344 for absorbing remaining ink. The ink absorbing material 344 is placed between the ink container 340 and the bottom surface 27b of the housing 27a of the ink cartridge 27 so as to completely cover the entire bottom surface 27b. As shown in FIG. 4 , a portion of blotter material 344 extends substantially perpendicularly behind opening 305 . In this way, it is ensured that the ink guided from the main body through the remaining ink pipeline 318 is indeed distributed on the entire bottom surface 27b.

Figure 4 shows the connection between the ink cartridge 27 and the host. The wiring board 346 on the ink cartridge 27 serves to connect the contacts 306A and 306B. According to the connection between the contacts 306A and 306B—that is, whether the contacts 306A and 306B are electrically connected, the controller 400 of the host computer can detect whether the ink cartridge 27 has been installed. The wiring board may have a resistance depending on the color or density of the ink in the ink cartridge 27 or similar ink parameters, so that the controller 400 is notified of information on these performance parameters.

When the ink cartridge 27 is inserted into the main body of the recording device, it passes through three insertion positions, namely the insertion position (1), the insertion position (2) and the insertion position (3). In the mated position (1), insert the needle The object 314 penetrates the plug 342, and the hole 316 is placed in the ink container 340, whereby the ink is circulated; at the insertion position (2), the contacts 306A and 306B are connected to each other by the wiring board 346; At the connection position (3), the latch 320 is combined with the notch 332, thereby fixing the ink cartridge 27. Determine various sizes and positional relationships so that the above-mentioned insertion positions are arranged in such an order, that is: when the ink cartridge 27 is inserted into the device, the needle 314 first penetrates into the ink container 340; When the ink cartridge 27 is further inserted into the main engine, the contact plates 306A and 306B enter the electrical connection state through the resistance plate 346; The host is fixed in place in the assembly area 30 . In this embodiment, the ink cartridge 27 receives the remaining ink, so it is required to connect the remaining ink pipe 318 into the ink cartridge 27 at the insertion position (1).

FIG. 5 shows the positional relationship described above. In FIG. 5, the ink cartridge 27 finally leans against a part of the main unit at the insertion position (A). Therefore, between position (3) and position (4), there is a range of movement that allows the ink cartridge 27 to move therebetween. This range of movement is provided by the engagement gap between the latch 320 and the notch 332, or , the moving range is determined in this way, that is, after the latch 320 is locked with the notch 332, the ink cartridge 27 can move within this range until the ink cartridge leans against the rear end of the main engine.

FIG. 6 shows an inappropriate situation that occurs when the above positional relationship cannot be satisfied. In the positional relationship shown in Figure 6A, even if the ink cartridge is correctly positioned, the characteristic information on the ink cartridge cannot be recognized by the contacts 306A and 306B, therefore, the controller 400 of the host computer cannot correctly determine the insertion of the ink cartridge Condition. Under the situation of positional relation as shown in Figure 6B, before turning on ink, contact piece 306A and 306B just contact resistance plate 346, and in this case controller 400 will wrongly judge that the insertion of ink cartridge has been completed. Done, and started some kind of operation. If this happens, the air It will pass through the needle 314 and enter the ink supply system. The above-mentioned situation also occurs in the case shown in FIG. 6C. In addition, in the situation shown in FIG. 6C, there will be such a situation that if the operator stops further insertion of the ink cartridge by hearing the sound of the latch being inserted, the ink cannot flow.

In the case of the positional relationship shown in FIGS. 6D and 6E, even if the ink cartridge is correctly installed, the needle 314 cannot be inserted into the ink container 340 correctly, or cannot be between the contact members 306A and 306B. An electrical connection is established.

If the positional relationship shown in FIG. 5 is applied, such a sequence occurs when the ink cartridge is inserted, that is, the ink circulates first, then the contacts 306A and 306B are electrically connected, and finally the ink cartridge is fixedly installed. Therefore, for the operator, what is needed is to distinguish whether the ink cartridge has been installed in place according to the sound of the latch. Even if the controller 400 starts operating immediately after the contacts 306A and 306B are energized, no air will enter the ink supply system. In addition, even if the ink cartridge 27 is removed during the operation of the controller 400, the controller 400 can detect this before the ink passage is interrupted. Therefore, if the operation is stopped when such a situation occurs, no malfunction will occur.

Figure 7A shows a structure of a further improved device. In this embodiment, the wiring board is divided into two parts. Corresponding to the insertion direction of the ink cartridge, 346A is called a front plate, and 346B is called a back plate. The function of the front plate 346A is to establish the electrical connection between the contacts 306A and 306B, and the rear plate 346B is used to reflect the color, density or some performance index of the ink through the change of the resistance value.

Figure 7B shows the position of the ink cartridge 27 in the following stages, namely: the position of the ink flow: through the plate 346A between the contacts 306A and 306 The position at which electrical connection is established between B; the position at which contacts 306A and 306B are connected only through plate 346B; and the position at which the ink cartridge is finally installed in place.

Position (1) in Figure 7B is the initial position of ink circulation; position (3) is a limit position where ink cartridge 27 is fixed; position (4) is the final abutment position of ink cartridge 27; position (2A) is a The starting position (relative to the insertion direction of the ink cartridge) of the electrical connection is established between the contacts 306A and 306B by the plate 346A; position (2B) is a terminal position, at this position, the contacts 306A and 306B off the plate 346A and they are in contact with the plate 346B so that the resistance of the plate 346B can be read. Here, the location (2B) is preferably the same as the location (3) or adjacent to the location (3). In these two solutions, it is especially better to be adjacent to the location (3). 3) The latch 320 has not been inserted into the notch 332 at the adjacent position, so it is easy to withdraw the ink cartridge 27 .

Since the positional relationship shown in FIG. 7B is adopted, it has the same excellent effect as that shown in FIG. 5 . In this embodiment, there are other advantages when the following operations are performed.

Fig. 8A shows the main part of the control system, including the controller 400, which may be a microcomputer. The microcomputer includes: a central processing unit CPU for controlling the process shown in FIG. 8B and controlling the entire device; a read-only memory ROM for storing process programs; and a random access memory RAM for working. Reference numeral 410 is a detector for detecting the resistance between the contacts 306A and 306B. When the resistance value is zero, it means that the plate 346A short-circuits the two contacts; if the resistance value is infinite, then Indicates that the ink cartridge 27 has not been installed; Marked by label 420 is a information display or an information component with a beeping device. Marked by I is the stop signal sent to each component.

Fig. 8B shows an example of the operation steps of this embodiment. This operation can be initiated when the main switch is turned on, when the ink cartridge 27 is replaced, or at an appropriate moment during recording.

At the beginning of the process, the resistance value is judged at step _S1 . If the resistance value is infinite, it can be determined that the ink cartridge 27 has not been installed. Then _, the operation proceeds to step _S3 , where the operation of each component is stopped. At step _S3 , the operator inserts the ink cartridge 27 into the recording apparatus.

If the resistance resistance value is zero, it can be determined that the ink cartridge 27 is easily withdrawn at this time, so the operation proceeds to step _S7 , and the operation of each part is stopped at step _S7 , and then, at step _S9 , the operator must The ink cartridge 27 will be put in place.

If this resistance has a predetermined resistance value, then show that ink cartridge 27 has been installed really, at this moment can read the information on the ink cartridge indicated by means of resistance (as information such as the color of ink), so, in _S11 The step performs the set operation according to this information as described.

If, although the operator inserts the ink cartridge 27 into the device, the latch 320 is not engaged with the notch 332, or for some reason the latch 320 is loosened from the notch 332, then the ink cartridge It is not fully secured, so that the ink cartridge is easy to come off. In this case, the contacts 306A and 306B are electrically connected by the plate 346A, and therefore, the controller 400 cannot read the information unique to the ink cartridge 27. In this embodiment, the controller 400 can recognize the above-mentioned situation and stop the operation, and then the operator inserts the ink cartridge 27. In this way, it is possible to notify the operator in advance that the ink cartridge 27 may come off against the operator's will.

In this embodiment, if the above-mentioned positional relationship related to the circulation of the ink, the interpretation of the information on the ink cartridge, and the firm positioning of the ink cartridge can be guaranteed, the ink cartridge And the insertion position also can have other structures. For example, the firm positioning of the ink cartridge is not limited to the use of the latch and notch structure; the interpretation of the unique information on the ink cartridge is not limited to the use of electrical components, and optical components can also be used. In the foregoing embodiments, the remaining ink is introduced into the ink cartridge, but the ink cartridge may be used only for ink supply.

In this embodiment, an outer cover 401 is provided at the entrance of the insertion area (or assembly area) 30 to prevent the operator's fingers or other foreign objects from touching the receiving ink during maintenance operations or similar operations. Needle 314 used. The outer cover 401 cannot be opened at other times except when the ink cartridge 27 is inserted.

This structure will be described below with reference to FIGS. 9-11. FIG. 9 is a bottom view of the insertion area, which corresponds to the view taken along the line α in FIG. 2 . Fig. 10 is a sectional view taken along a line perpendicular to the insertion direction of the ink cartridge. FIG. 10A shows the situation when the ink cartridge 27 is not installed, and FIG. 10B shows the situation when the ink cartridge 27 is installed. Fig. 11 is a sectional view taken along a line parallel to the insertion direction of the ink cartridge.

The outer cover 401 is placed to block the insertion channel of the ink cartridge. For example, the outer cover 401 is made of a metal plate with a thickness of 0.8 mm. The area of the cover 401 is substantially equal to the cross-sectional area of the ink cartridge. Therefore, when the insertion channel 33 of the ink cartridge is cut off by the cover 401, there will not be enough to allow the operator's fingers or other foreign objects to pass over the cover 401 and Such a void inserted into the interior. In this way, the needle 314 and the remaining ink pipe 318 are prevented from touching the operator's fingers or touching these external things. The outer cover 401 can rotate around the groove 403 at the sealing place of the assembly area 30 by virtue of the hook on it.

When the ink cartridge 27 is inserted, the outer cover 401 is pushed up by the ink cartridge, and it rotates around the groove 403 until it touches the seal, so that the ink cartridge 27 is inserted. When the ink cartridge 27 is not in the insertion position, the claw 406a of the stopper 406 extends over the outer cover 401 Within the rotatable range, the outer cover 401 is prevented from being opened by the claw 406a. In this way, the outer cover 401 blocks the ink cartridge insertion channel 33 and prevents foreign objects from going over the outer cover 401 into the interior. There is also a slope section 406b below the bottom end of the outer cover 401 under the claw 406a of the stopper 406 .

When the outer cover is in the closed position, the top S of the bevel section 406b is also located inside the outer cover 401, so the bevel section 406b cannot touch the operator's fingers or the like. At a position above the stopper 406 there is a pin 406C supported on a support 407 in the assembly area. An upper end of a spring 406d integral with the stopper 406 is coupled to the main frame 410, thereby pushing the stopper 406 to the ink cartridge mounting area. When the projection 405a on the ink cartridge 27 pushes the slope section 406b, the stopper 406 overcomes the elastic force of the spring 406d and rotates around the pin 406c in the retracting direction of the ink cartridge insertion channel 33, whereby the claw 406a is in contact with the outer The cover 401 is disengaged, so that the outer cover 401 can be opened, in other words, the outer cover 401 can be retracted from the ink cartridge insertion passage 33 . The ink cartridge 27 has a protrusion 405a on the front surface 405 (the front and rear referred to herein is corresponding to the insertion direction of the ink cartridge), and when the ink cartridge is inserted, the position of the protrusion 405a is in line with the slope of the stop block 406 Section 406b corresponds.

When the ink cartridge 27 is inserted into the channel 33, the protrusion 405a faces the ramp section 406b. Thus, during cartridge insertion, the tab 405a protrudes beyond the cover 401 into the gap between the cover 401 and the frame 408 until it contacts the ramped section 406b of the stopper 406 . When the ink cartridge 27 is further inserted, the protrusion 405 a pushes the slope section 406 b, thereby making the slope section 406 b retract away from the channel 33 until the claw 406 a of the stopper 406 disengages from the outer cover 401 . Then, the outer cover 401 can be retracted from the insertion channel 33, so that the ink cartridge 27 can be inserted. this Finally, the front end 405 of the ink cartridge 27 directly leans against the outer cover 401, so that the outer cover 401 is pushed up by the ink cartridge 27.

The relationship between the projection 405a on the ink cartridge 27 and the front end 405 of the ink cartridge and between the outer cover 401 and the stopper 406 is as follows:

(1) The bump 405a pushes against the slope section 406b of the stopper 406;

(2) The claw 406a of the stopper 406 is disengaged from the outer cover 401;

(3) The front end 405 of the ink cartridge 27 pushes up the outer cover 401 .

The needle 314 and remaining ink conduit 318 then enter the ink cartridge 27 through the opening 350 and plug 342 on the cartridge, as already described above. Afterwards, the ink is circulated, the installation of the ink cartridge is checked, and the ink cartridge is ready to receive the remaining ink. In addition, the ink cartridge 27 is held in place in the assembly area 30 by the coupling between the latch 320 and the notch 332 on the ink cartridge.

The plate 409 in the mounting area has a notch 408 for receiving the projection 405a on the ink cartridge 27 (see FIG. 9). As mentioned above, under normal circumstances, the stop block 406 is pushed toward a part of the main body in the locking direction of the outer cover 401 by means of the spring 406d.

In this embodiment, when the outer cover 401 is in the closed position, the gap between the outer cover 401 and the frame 408 is about 4 millimeters, and the top S of the slope section 406 b of the stopper 406 is located at a distance from the outside. The cover 401 is about 3 mm, and it is located on the inner side of the outer cover 401 . The height of the protrusion 405a on the ink cartridge 27 is about 2 mm from the bottom surface, and the length of the protrusion is about 2 mm. It is impossible to let the operator unintentionally release the stopper 406 with such a size, so that the outer cover 401 will not violate the operator's will during maintenance or similar inspection operations. And open.

The protrusion on the ink cartridge and the latch of the main engine are not limited to be set at the bottom, as long as the main engine Depending on the structure, they can also be arranged on the side or other similar positions, and they can also be arranged on opposite sides.

12, the size of the ink cartridge 27 is as follows: size 1 is 109mm; size 2 is 79.6mm; size 3 is 25.5mm; size 4 is 14mm; size 5 is 6mm; size 6 is 42.8mm; size 7 is 20.8mm; 12.5mm for size 8; 17.5mm for size 9; 13.4mm for size 10; 7mm for size 11; 6mm for size 12; 12mm for size 13; 6mm for size 14 and 15; 4mm for size 16; mm; 10mm for size 18; 6mm for size 19 and size 20; 2mm for size 21; 4.5mm for size 22; 3mm for size 23.

An inclined surface 500 is provided on the left and right tops of the ink cartridge 27 to prevent wrong insertion.

More specifically, when the operator mistakenly inserts the ink cartridge 27 backwards (that is, facing down) into the assembly area (or claiming the insertion area) 30, the top 27c (see FIG. 3 ) of the front end of the ink cartridge housing 27a hits The limiting plate 32 of the main engine (see Fig. 1, Fig. 10A and Fig. 10B), thus just stops the loading of ink cartridge. When the ink cartridge 27 is correctly inserted, the slope 500 effectively avoids the limiting plate 32 , so that the ink cartridge 27 can be further inserted. The profile of the top end of the ink cartridge case 27a is not limited to a slope or a tapered surface, and it can be changed according to the shape of the limiting plate.

As shown in FIG. 12 , a stretch seal 35 is bonded to the top of the ink cartridge 27 . The sealing member 35 is bent and extended to the rear end 27c of the cartridge case 27a. The end of the seal 35 is followed by a flat tail 35a which covers the projection 27d on the tail end 27c. When the ink cartridge 27 is to be taken out from the main body, the flat tail 35a can be pulled out through the stretch seal 35 by peeling off the flat tail 35a from the housing 27a.

In this embodiment, the protrusion 405a on the ink cartridge 27 is arranged on the end of the ink cartridge having the plug 342 and the opening 350, so that the arrangement has the following advantages:

(1) It is possible to prevent the ink cartridge from being inserted incorrectly in advance. When the ink cartridge is loaded, the projection at the predetermined position opens the protective outer cover. The cover is opened only when the ink cartridge is inserted, so if the operator mistakenly intends to install a different type of ink cartridge, the cover cannot be opened, thus preventing the ink cartridge from being installed incorrectly.

(2) Easy to operate. In this embodiment, the protruding direction of the protrusion is the same as the insertion direction of the ink cartridge, so the operator can easily determine the insertion direction from the shape of the ink cartridge. Therefore, the operator can quickly know the insertion direction without any difficulty.

(3) Can prevent being stained by ink. This is because the operator generally does not place the ink cartridge in such a way that the lugs are placed against a table or the like so that the plug or opening for connecting the ink does not touch the table or the like. Since the ink cartridge has the dimensions as described above, if the operator places the ink cartridge 27 vertically with the end of the rubber stopper 342 (or opening 342a) facing down, or even if the operator tries to do so, the stopper 342 or the opening 350 will not work. will touch the surface 600 of the table. This prevents a table or the like from being stained with ink.

Whether the ink cartridge can be placed vertically depends on the thickness of the tab or its shape. The present invention covers both cases.

(4) The mechanism for opening and closing the outer cover is simplified, and its size is reduced.

In this embodiment, the cover opening and closing mechanism is engaged with the projection of the ink cartridge, so that only a small additional clearance is required, and the mechanism is simple.

The present invention is especially suitable for use in an inkjet recording head and a recording device that use thermal energy generated by an electrothermal transducer, a laser beam, or the like to change the state of the ink so that the ink is ejected, because a high density can be obtained. pixels and high-resolution recording.

Typical structure and method of operation are preferably disclosed in U.S. Patent No. 4,723,129 and US4,740,796, and this structure and method are suitable for so-called " immediate type " (on- demand type) record system and continuous record system. However, it is particularly suitable for instant type recording systems because the method is a method in which at least one driving signal is issued to an electrothermal transducer placed on a liquid (ink) retaining member or liquid channel, the driving signal It is enough to make the temperature rise rapidly beyond the nucleation boiling point, whereby the heat energy provided by the electrothermal converter creates a boiling oil film in the heating area of the recording head, and then liquid bubbles (ink bubbles) can be formed on the boiling oil film corresponding to each driving signal . Through the generation, expansion and contraction of the bubble, the liquid (ink) is ejected through an ejection port to generate at least one small ink droplet. The driving signal is preferably in the form of a pulse because the expansion and contraction of the bubble can be done instantaneously, so that the liquid (ink) is ejected with a quick response. The drive signal in the form of pulses is preferably a drive signal as disclosed in U.S. Patent Nos. 4,463,359 and 4,345,262. In addition, the rate of temperature rise of the heating surface is preferably as disclosed in U.S. Patent No. 4,313,124.

The construction of the recording head may be as shown in US Patent Nos. 4,558,333 and 4,459,600, wherein the heating zone is arranged in a curved area. In addition, the combined structure of the injection port, the liquid passage and the electrothermal transducer is also as disclosed in the above-mentioned patent. Besides, the present invention can also use the structure disclosed in Japanese Patent Application Laid-Open No. 123670/1984, in which a common long port is used as the injection port for a plurality of electrothermal transducers. The present invention can also use the structure disclosed in Japanese Patent Application Laid-Open No. 138461/1984, in which an opening for buffering thermal energy pressure waves is provided corresponding to the ejection area. The reason why the various types of structures described above can be used is that the present invention can be performed reliably and efficiently regardless of the type of recording head Log actions.

The present invention can be effectively applied to so-called "full-line" (full-line fype) recording heads, the length of which corresponds to the maximum recording width. Such recording heads may include a single recording head and multiple recording heads combined to cover a maximum width.

In addition, the present invention can also be applied to a tandem type recording head, which is fixed to the main body; Electrically connected, the recording head can be supplied with ink when installed in the main body; the present invention is also applicable to a cartridge-type recording head having an integral ink container.

It is preferable to provide restoring means and auxiliary means for the initial operation, because these means can make the present invention have a more stable effect. These means include: capping means for the recording head; cleaning means for the recording head; pressurization or suction means; preheating means which may be an electrothermal transducer, may be an additional heating element or a combination thereof. Also, the means for performing the initial ejection (not for the recording operation) can stabilize the recording operation.

As for the kind of recording heads that can be mounted, there may be a single recording head corresponding to a single color ink, or a plurality of recording heads corresponding to a plurality of ink materials having different recording colors or densities. The present invention can be effectively applied to such an apparatus having at least one of the following modes: a single-color type mainly using black ink; a multi-color type using ink materials having different colors; A full-color type of mixed material in which several colors are mixed. The device may be an integral recording device or a combination of multiple recording heads.

In the above embodiments the ink is liquid, however it may be an ink material which is cured at a temperature below room temperature and liquefied at room temperature. Since the ink is controlled within a temperature range of 30°C to 70°C to stabilize the viscosity of the ink to provide stable ink ejection in this general type of recording apparatus, the ink can be such that when the recording signal in the present invention When applied to other types of inks, the ink will exhibit liquid state. Among the other types of inks just mentioned, there is an ink that is sure to prevent a temperature rise due to thermal energy before the ink is used to prevent the ink from changing from a solid state to a liquid state. Another ink material is cured when left to prevent the ink from evaporating. In both of the above cases, the ink is liquefied by applying the recording signal to generate thermal energy, and the liquefied ink can be ejected. Another ink material may start to cure upon reaching the recording material. The present invention can also use such an ink material which is liquefied by the application of heat energy, which can be held in the through holes or deep holes of a loose porous sheet in the form of a liquid material or a solid material, the The loose porous sheet is as disclosed in Japanese Patent Application Laid-Open Nos. 56847/1979 and 71260/1985. The sheet faces the electrothermal transducer. The most effective for these ink materials described above is the oil film boiling system.

The inkjet recording device can be used as an output terminal of an information processing device such as a computer, can be used as a copying device combined with an image reader or the like, and can be used as a facsimile with information transmission and information reception functions machine.

As previously described, according to the present invention, this small and simple structure is sufficient to prevent the ink cartridge from being misinstalled and soiled with ink.

Here, the invention has been described with reference to the disclosed structure, but the invention is not limited to these structural details, and the invention will cover those which may be included in the object of the invention of the invention or included within the scope of the following claims. Modifications and Changes.

Claims (9)

1, a kind of print cartridge comprises:

A shell;

An ink reservoir is located in the above-mentioned shell;

A blotting material is located in the above-mentioned shell;

An ink supply port that is connected with described ink reservoir is in order to be provided to China ink from this ink supply port the outside of said vesse;

It is characterized in that:

A projection that stretches out from a side that is provided with above-mentioned ink supply port of said vesse, the height of this projection can make above-mentioned ink supply port be positioned in " this projection top links to each other with the said vesse edge " line, and above-mentioned shell is provided with a resistance in its surface, in order to detect the assembling situation of above-mentioned print cartridge in this recording equipment.

2, print cartridge according to claim 1 is characterized in that, described ink supply port seals with an elastomeric material (342).

3, print cartridge according to claim 1 is characterized in that, also comprises an ink receiving port (350), communicates with above-mentioned absorption of inks material, can communicate with surrounding space when above-mentioned receiving port is opened.

4, print cartridge according to claim 1 is characterized in that, described ink reservoir is positioned at the top of above-mentioned blotting material.

5, print cartridge according to claim 1 is characterized in that, also comprises a housing that is positioned at the said vesse outside, along the both sides of the edge of case top an inclined-plane section (500) is arranged.

6, print cartridge according to claim 1, it is characterized in that, also comprise a housing and an ink receiving port that communicates with above-mentioned absorption of inks material that is positioned at the said vesse outside, above-mentioned ink receiving port, ink supply port and projection are complied with the order setting of above-mentioned title from the top of above-mentioned housing.

7, print cartridge according to claim 1 is characterized in that, also comprises an ink receiving port that communicates with above-mentioned absorption of inks material, above-mentioned projection, ink supply port and ink receiving port all be positioned in the print cartridge width half with in the interior zone.

8, print cartridge according to claim 1 is characterized in that, described projection is positioned at the place, angle that is adjacent to a below on that surface (27C) that is provided with above-mentioned ink supply port.

9, a kind of ink jet recording device comprises:

A record head is in order to record effectively on recording materials;

A print cartridge, but demolition be installed on the above-mentioned ink-jet recording apparatus, in order to containing China ink, with to above-mentioned record head ink supply;

An assembled portion is in order to receive and to support above-mentioned print cartridge;

An openable masking material is arranged on above-mentioned print cartridge and moves with in the passage of being accepted by above-mentioned department of assembly branch;

An ink-feeding device on the direction that moves with respect to print cartridge, is arranged on the bottom of above-mentioned masking material, in order to be communicated with the ink supply port of above-mentioned print cartridge when the assembling print cartridge;

It is characterized in that:

Above-mentioned print cartridge comprises a shell, is provided with ink reservoir in this shell, is provided with a projection on a side of this shell, and above-mentioned print cartridge is communicated with at this projection place with above-mentioned ink-feeding device;

Described ink jet recording device comprises lock uint, sealed above-mentioned masking material under its closure state, and above-mentioned lock uint and the engagement of above-mentioned masking material are opened to allow above-mentioned masking material;

Above-mentioned shell is provided with a resistance in its surface, in order to detect the assembling situation of above-mentioned print cartridge in recording equipment;

Above-mentioned assembled portion has a meshing part, can with a groove Elastic Meshing of above-mentioned print cartridge.

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