Cartridge disassembling method, cartridge, and reproduction method thereof

Abstract

To provide a cartridge disassembling method in which a possibility of generation of a chip when a liquid storage member and a lid member are separated is suppressed, a cartridge, and a reproduction method of the cartridge, which may contribute to achievement of sustainable society such as decarbonization / recycling-oriented society.SOLUTION: A disassembling method of a cartridge includes: a liquid storage member having an opening and storing liquid therein; and a lid member covering the opening. The disassembling method includes a step in which the liquid storage member and the lid member are joined in a joint part, a gap is formed between a rear surface of the lid member and the liquid storage member, a member is inserted from the gap to bring the member into contact with the joint part, and the liquid storage member and the lid member are separated.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a method for disassembling a cartridge, a cartridge and a method for remanufacturing the cartridge. [Background technology]

[0002] A liquid ejection device is equipped with a liquid ejection head for ejecting liquid, and various purposes are achieved by ejecting the liquid. For example, in an inkjet recording device, an inkjet recording head for ejecting liquid is mounted on a carriage, and images, characters, etc. are recorded by ejecting ink onto a recording medium. The liquid ejected from the liquid ejection device is supplied to the liquid ejection head from a cartridge that is detachable from the liquid ejection device.

[0003] A cartridge has a liquid containing member with an opening that contains a liquid, and a cover member that is joined to the liquid containing member. In recent years, there has been a demand for the reuse of cartridges from the perspective of environmental protection. To reuse the liquid containing member of a used cartridge, it is desirable to first purge the old liquid from the inside and then refill it with new liquid. To do this, it is necessary to separate the liquid containing member from the cover member and disassemble the cartridge.

[0004] Patent Document 1 describes a method for disassembling a cartridge in which a liquid containing member and a cover member are separated by cutting the gap between them. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-108369 Summary of the Invention [Problem to be solved by the invention]

[0006] However, when the liquid containing member and the cover member are separated by cutting, a considerable amount of chips are generated. These chips may adhere to the processing equipment due to static electricity or may become mixed with the liquid in the cartridge to be reused. In particular, if chips get mixed with the ink in the ink cartridge, there is a concern that they may cause clogging in the liquid ejection head to which the ink is supplied from the ink cartridge.

[0007] In view of the above-mentioned problems, the present invention aims to provide a method for disassembling a cartridge that reduces the risk of chips being generated when separating a liquid containing member and a lid member, a cartridge, and a method for remanufacturing the cartridge. [Means for solving the problem]

[0008] The method for disassembling a cartridge of the present invention is a method for disassembling a cartridge having a liquid containing member with an opening and containing a liquid therein, and a lid member covering the opening, wherein the liquid containing member and the lid member are joined at a joint, a gap is formed between the back surface of the lid member and the liquid containing member, and the method includes a step of separating the liquid containing member and the lid member by inserting a member through the gap and abutting the member at the joint. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a method for disassembling a cartridge that reduces the risk of chips being generated when separating a liquid containing member from a cover member, a cartridge, and a method for remanufacturing the cartridge. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic diagram of a liquid ejection device. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] 1 is a schematic diagram of a system for separating a lid member from a liquid containing member. [Figure 5] FIG. 4 is an enlarged view of a joint between the liquid containing member and the cover member. [Figure 6] FIG. 4 is a flow chart showing the steps of disassembling the cartridge. [Figure 7] FIG. 10 is a schematic diagram illustrating a state in which the cover member is separated from the liquid containing member. [Figure 8] Schematic diagram of a cartridge. [Figure 9] FIG. 1 is a flow chart showing the process of remanufacturing cartridges. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the following embodiments do not limit the subject matter of the present invention, and not all combinations of features described in the embodiments are necessarily essential to the solution of the present invention. Note that the same reference numerals are used to designate the same components.

[0012] (First embodiment) (Inkjet recording device) FIG. 1 is a schematic diagram of a liquid ejection device according to a first embodiment. The liquid ejection device according to the first embodiment is an inkjet recording device, but this is not limited to this, as long as it is a device that ejects liquid. The inkjet recording device 10 (hereinafter also referred to as the recording device) is an on-carriage type that uses a serial recording method, and includes a cartridge 100 and a carriage 11. The cartridge 100 is mounted on the carriage 11. In the recording device 10, the carriage 11 moves back and forth, and recording paper 12 is transported by a predetermined amount in a direction perpendicular to the reciprocating movement of the carriage, and the cartridge ejects ink onto the recording paper 12, thereby forming an image on the recording paper 12.

[0013] (cartridge) FIG. 2 shows a perspective view of the cartridge 100 according to the first embodiment, and FIG. 3 shows an exploded perspective view of the cartridge according to the first embodiment. The cartridge 100 is a type that contains ink of one color, and is generally a cartridge for black ink. The present invention is also applicable to cartridges that contain ink of multiple colors, generally cartridges for color inks (cyan, magenta, and yellow), but this embodiment will be described using a cartridge for black ink.

[0014] The cartridge 100 includes an absorber 130 that holds liquid, a liquid containing member 120 that has an opening 121 and contains the absorber and liquid therein, a lid member 150 (also referred to as a first lid member) that covers the opening, and a joint where the lid member is joined to the liquid containing member. The liquid containing member 120 and the lid member 150 are joined by thermal welding or the like. When they are joined by thermal welding, the lid member 150 has a flat plate portion 151 and a protrusion (also referred to as a welding rib) 152 ( FIG. 5 ) that protrudes from the flat plate portion in the thickness direction (−Z direction) of the flat plate portion, and the joint is formed by joining the protrusion 152 to the liquid containing member 120. In order to firmly weld the lid member 150 and the liquid containing member 120 together, it is preferable that the protrusion 152 be provided around the circumferential direction of the opening 121. When reusing the liquid containing member 120, it is preferable that the lid member 150 has a welding rib, and when reusing the lid member 150, it is preferable that the liquid containing member 120 has a protrusion (welding rib). Considering the amount of plastic that can be reduced when reusing, it is preferable to reuse a liquid containing member 120 that has a large volume. As will be described in detail later, a gap (FIG. 5) is formed between the liquid containing member 120 and the back surface (flat plate portion 151) of the lid member 150.

[0015] The absorber 130 is made of a fibrous or porous material, and is capable of retaining ink therein by capillary force. The absorber 130 is preferably housed inside the liquid containing member 120 in contact with a filter 160 for removing foreign matter.

[0016] Furthermore, the cartridge 100 of this embodiment has a liquid ejection head 110 that ejects liquid on the bottom surface vertically below the liquid containing member 120. The liquid ejection head may be provided on a member separate from the cartridge 100.

[0017] Furthermore, the cartridge 100 preferably includes a partition member 140 disposed between the absorber 130 and the lid member 150 and having a protrusion 141 that contacts the absorber 130. The protrusion 141 contacts the absorber 130 and holds down the absorber 130, thereby bringing the absorber and the filter 160 into contact and stabilizing the supply of liquid from the cartridge. The partition member 140 may be integral with the lid member 150, or the lid member 150 may have a protrusion that contacts the absorber 130. Since the partition member 140 that is not joined to the liquid storage member 120 can be reused, it is preferable that the lid member 150 and the partition member 140 are separate members. Furthermore, it is preferable that the lid member 150 and the partition member 140 are joined together such that the support portion 155 of the lid member and the fitting portion 142 of the partition member are fitted together. The lid member 150 is joined to the liquid containing member 120, which makes it possible to prevent misalignment of the partition member that is fitted with the lid member 150. By thermally caulking the support part 155 and the fitting part 142, it is possible to assemble them with a simple structure, which is preferable.

[0018] (How to disassemble the cartridge) Next, a detailed description will be given of the process of separating the lid member 150 from the liquid containing member 120, which is a characteristic feature of the present invention. FIG. 4 is a diagram showing the schematic configuration of a system for separating the lid member 150 from the liquid containing member 120 of the cartridge 100. As shown in FIG. 4, the separation device 1 includes a gripper 3 that grips the cartridge 100 and a separation pin 4 (also referred to as a member) for separating the lid member 150 from the liquid containing member 120. The gripper 3 has the function of gripping and transferring the cartridge 100 and the function of pressing the gripped cartridge 100 against the separation pin 4. It is preferable that the gripper 3 has an elastic body such as rubber at its tip to reduce the risk of damaging the cartridge 100 when gripping it.

[0019] 5 shows an enlarged view of the joint between the liquid containing member 120 and the cover member 150 of the cartridge 100. As described above, in the cartridge 100, the back surface of the cover member 150 and the liquid containing member 120 are joined together with a gap 153 formed therebetween. In other words, the gap 153 is formed between the flat plate portion 151 and the liquid containing member 120. Furthermore, as will be described later, the separation pin 4 is pushed into the joint (protrusion 152) between the liquid containing member 120 and the cover member through the gap 153, so the gap 153 is formed outside the protrusion 152 provided around the circumferential direction of the opening 121.

[0020] Next, FIG. 6 shows the process flow for disassembling a cartridge. First, in S601, the lid member 150 of the cartridge 100 is set in the separation device 1 as shown in FIG. 4, either manually or by a device. That is, the gripper 3 grips the longitudinal surface (X direction) of the cartridge 100 from both sides with an arbitrary force. Note that while the lid member 150 of the cartridge 100 faces downward in FIG. 4, it may be upside down. Next, in S602, the cartridge 100 is aligned so that the gap 153 of the cartridge 100 faces the separation pin 4. In S603, as shown in FIG. 7(a), the tip of the separation pin 4 is pressed against the joint portion until it enters the gap 153 approximately 30 mm into the joint portion. This gradually applies force in a direction that separates the lid member 150 from the liquid container member 120, peeling off the welded portion between the lid member 150 and the liquid container member 120, and the lid member 150 is separated from the liquid container member 120. The separated lid member 150 falls and is collected in one place by a chute (not shown) or the like. The distance at which the separation pin is pressed is not limited to 30 mm, and the tip of the separation pin 4 is preferably sharp enough to penetrate into the joint. As shown in FIG. 7(b), the tip of the separation pin 4 preferably has an acute angle of about 15°. The larger this angle, the greater the stress on the lid member 150, which may result in damage to the lid member 150.

[0021] 5, it is preferable that cover member 150 has an inclined surface 154 that is connected to gap 153 and inclined toward gap 153. By having inclined surface 154, even if misalignment occurs when gap 153 of cartridge 100 is brought close to separation pin 4, it is possible to guide separation pin 4 from gap 153 to the joint along inclined surface 154. It is preferable that inclined surface 154 have an inclination angle of 45°, a depth (length in the X direction) of about 0.5 mm, and a width (length in the Y direction) of about 1 mm, for example.

[0022] 7(a), the gap 153 is formed on the surface of the lid member 150 in the longitudinal direction (X direction), and it is preferable to insert the separation pin 4 into the gap 153 from the longitudinal direction. This reduces the area of ​​the joint (protrusion 152) required for peeling compared to when the separation pin 4 is inserted into the gap 153 from the lateral direction (Y direction) of the lid member 150, making it easier to separate the lid member 150 from the liquid containing member 120.

[0023] In S604, the cartridge 100 gripped by the gripper 3 is moved to its original position. Finally, in S605, the gripper 3 unclamps the cartridge, and the process of separating the cover member 150 from the liquid containing member 120 is completed.

[0024] According to the above steps, the liquid container member 120 and the cover member 150 can be separated while minimizing the risk of generating chips, compared to when the liquid container member 120 and the cover member 150 are separated by cutting. Furthermore, since the risk of damaging the liquid container member 120 can be reduced, the liquid container member 120 separated from the cover member 150 can be reused to remanufacture the cartridge 100. The method for remanufacturing the cartridge 100 will be described later.

[0025] (Second embodiment) The configuration of a cartridge 100 according to a second embodiment of the present invention will be described. In the following description, only the parts that are different from the first embodiment will be mainly described, and a description of the parts that are the same as those in the first embodiment will be omitted.

[0026] FIG. 8(a) is a schematic diagram of a cartridge 100 according to a second embodiment, as viewed from the X direction. The cartridge 100 according to the second embodiment differs from the first embodiment in that it has a recess 156 that guides the separation pin (member) 4 from the gap 153 to the joint portion. Even if the separation pin 4 is misaligned when it is inserted through the gap 153 and brought into contact with the joint portion, by pushing the separation pin 4 while it is in contact with the recess 156, the separation pin 4 can be guided from the recess 156 to the gap 153 and then to the joint portion. FIGS. 8(b) to 8(e) are enlarged views of the joint portion between the liquid container member 120 and the cover member 150. The recess 156 preferably has an opening width (Y direction) of 1 mm or more and a depth (X direction) of 0.5 mm or more, for example. FIG. 8(b) shows a recess 156 with a triangular opening. This shape allows the separation pin 4 to be guided accurately into the gap 153. Furthermore, as shown in FIG. 8(b), the opening shape of the recess 156 may be semicircular. In such a shape, it is possible to increase the range over which the separation pin 4 can be guided into the gap 153. As shown in FIG. 8(c), the opening shape of the recess 156 may be rectangular. In such a shape, the shape is simple and therefore easy to process. Furthermore, as shown in FIG. 8(d), the opening shape may be the same size as the thickness of the cover member 150. In this case, it is even easier to process than the shape of FIG. 8(c). Note that the opening shape of the recess 156 is not limited to these, and may be trapezoidal or the like.

[0027] Furthermore, since recess 156 guides separation pin 4 from gap 153 to the joint, at least a portion of the opening of recess 156 must be formed outside the joint. It is more preferable that the entire opening of recess 156 be formed outside the joint. As described above, it is preferable that separation pin 4 abuts against the joint from the side surface of cover member 150 in the longitudinal direction, so recess 156 is preferably provided on the side surface of cover member 150 in the longitudinal direction. Furthermore, recess 156 preferably has an inclined surface that slopes toward gap 153. This makes it easier to guide separation pin 4 from gap 153 to the joint.

[0028] As described above, since the cover member has a recess, the separation pin (member) can be easily guided into the gap, and the risk of damaging the liquid containing member can be further reduced.

[0029] (How to remanufacture cartridges) Next, a method for remanufacturing the cartridge 100 will be described. Figure 9 shows the flow of the remanufacturing process for the cartridge 100. Step S901 in Figure 9 represents a step of preparing used cartridges 100. For example, after cartridges 100 have been distributed on the market, the used cartridges 100 may be collected and prepared. At this time, it is preferable to sort the collected products and select defective products that cannot be recycled. In the initial sorting process for collected products, the collected products are sorted by type. Generally, cartridges 100 have different shapes of liquid containing members 120 and different types of ink used depending on the type, so they need to be sorted before being input into the production process. Furthermore, since they are collected products, it is necessary to consider the possibility that ink cartridges that are not eligible for recycling may be mixed in.

[0030] Step S902 is a step that is a characteristic feature of the present invention, in which the lid member 150 is separated from the liquid containing member 120. The method for separating the lid member 150 from the liquid containing member 120 is as described above.

[0031] Step S903 represents a step of removing the absorber 130 from the liquid containing member 120. Note that in the case of a cartridge 100 that does not contain an absorber 130, step S903 can be omitted.

[0032] Step S904 represents a step of cleaning the liquid containing member 120. In the cleaning step, the entire interior and surface of the liquid containing member 120 of the cartridge 100 is washed with water or the like to remove dust, ink stains, etc., and then dried.

[0033] In step S905, a new absorber (also referred to as a second absorber) is inserted into the liquid containing member 120. The absorber 130 separated in S903 may be washed and then accommodated again in the liquid containing member 120. In this case, instead of permeating the absorber 130 from one direction and sucking and discharging the cleaning liquid, the absorber 130 is immersed entirely in the cleaning liquid and cleaned by permeating every corner with the cleaning liquid. Furthermore, cleaning the absorber 130 by pressing and deforming it in the cleaning liquid is preferable because it removes residual ink.

[0034] In step S906, the liquid containing member 120 is refilled with new ink, and the ink is retained in the second absorber.

[0035] In step S907, a new lid member (second lid member) is joined to the liquid container member 120. This can be done using the same method as for joining the lid member 150 to the liquid container member 120, for example, by thermal welding. Once the lid member 150 is joined to the liquid container member 120, the welded rib (protrusion) will have a reduced thickness even if the lid member 150 is separated from the liquid container member 120. For this reason, it is preferable to use a new lid member (second lid member) when remanufacturing the cartridge 100.

[0036] It is preferable to fix the second cover member and the partition member 140 by thermal caulking before step S907. This improves the ease of handling in the subsequent steps. Furthermore, since the partition member 140 is not joined to the liquid containing member 120, it is preferable to reuse it. By reusing the partition member 140, it is possible to improve the weight recycling rate of the cartridge 100, resulting in a more environmentally friendly cartridge 100.

[0037] Through the above steps, remanufacturing of the cartridge 100 is completed in S908. Note that the steps for remanufacturing the cartridge 100 are not limited to the steps described above, and steps may be omitted or added as appropriate depending on the situation.

[0038] As described above, the present invention provides a cartridge disassembly method that reduces the risk of chips being generated when separating the liquid containing member and the cover member, a cartridge, and a method for remanufacturing the cartridge. By reusing the liquid containing member 120, it is possible to create an environmentally friendly cartridge 100.

[0039] In other words, the technology described in this specification can contribute to the realization of a sustainable society, such as a decarbonized / recycling-based society.

[0040] Furthermore, configurations in which the configurations in the above-described embodiments are appropriately combined can also be applied.

[0041] To summarize the present invention as described above, the present invention includes the following configurations.

[0042] (Configuration 1) a liquid containing member having an opening and containing a liquid therein; a cover member for covering the opening; A method for disassembling a cartridge having the liquid containing member and the lid member are joined at a joint, a gap is formed between the rear surface of the lid member and the liquid containing member; a step of inserting a member through the gap and abutting the member against the joint, thereby separating the liquid containing member and the cover member;

[0043] (Configuration 2) the cover member has an inclined surface that is connected to the gap and inclined toward the gap, 2. The method for disassembling a cartridge according to claim 1, further comprising the step of pushing the member into the gap while the member is in contact with the inclined surface.

[0044] (Configuration 3) The gap is formed on a side surface of the cover member in the longitudinal direction, 3. The cartridge disassembly method according to claim 1, wherein the separating step includes inserting a member into the gap from the longitudinal direction.

[0045] (Configuration 4) The joint is formed around the circumferential direction of the opening, 4. The method for disassembling a cartridge according to any one of configurations 1 to 3, wherein the gap is formed outside the joint.

[0046] (Configuration 5) the cover member has a flat plate portion and a protrusion protruding from the flat plate portion in a thickness direction of the flat plate portion, the protrusion is joined to the liquid containing member to form the joined portion; 5. The method for disassembling a cartridge according to claim 4, wherein the gap is formed between the liquid containing member and the flat plate portion.

[0047] (Configuration 6) the lid member has a recessed portion on a side surface of the lid member that is connected to the gap, At least a part of the opening of the recess is formed outside the joint, 6. The method for disassembling a cartridge according to claim 4 or 5, further comprising the step of inserting the member into the recess to guide the member into the gap.

[0048] (Configuration 7) a liquid containing member having an opening and containing a liquid therein; a first cover member that covers the opening; A method for disassembling a cartridge having the liquid containing member and the first cover member are joined at a joint, a gap is formed between the rear surface of the first cover member and the liquid containing member, a step of inserting a member through the gap and bringing the member into contact with the joint, thereby separating the liquid containing member and the first cover member; refilling the liquid containing member with liquid; a step of joining the first lid member or a second lid member different from the first lid member to the liquid containing member so as to cover the opening; A method for remanufacturing a cartridge, comprising:

[0049] (Configuration 8) the first cover member is connected to the gap and has an inclined surface inclined toward the gap, 8. The method for remanufacturing a cartridge according to claim 7, further comprising the step of pushing the member into the gap while the member is in contact with the inclined surface.

[0050] (Configuration 9) the gap is formed on a side surface of the first cover member in the longitudinal direction, 9. The cartridge remanufacturing method according to claim 7 or 8, wherein the separating step includes inserting a member into the gap from the longitudinal direction.

[0051] (Configuration 10) The joint is formed around the circumferential direction of the opening, 10. The method for remanufacturing a cartridge according to any one of configurations 7 to 9, wherein the gap is formed outside the joint.

[0052] (Configuration 11) the first cover member has a flat plate portion and a protrusion protruding from the flat plate portion in a thickness direction of the flat plate portion, the protrusion is joined to the liquid containing member to form the joined portion; 11. The method for remanufacturing a cartridge according to claim 10, wherein the gap is formed between the liquid containing member and the flat plate portion.

[0053] (Configuration 12) the first lid member has a recess in a side surface of the first lid member that is connected to the gap, At least a part of the opening of the recess is formed outside the joint, 12. The method for remanufacturing a cartridge according to claim 10 or 11, further comprising the step of inserting the member into the recess to guide the member into the gap.

[0054] (Configuration 13) a liquid containing member having an opening and containing a liquid therein; a cover member for covering the opening; A cartridge having the liquid containing member and the lid member are joined at a joint, a gap is formed between the rear surface of the lid member and the liquid containing member; The joint portion is formed around the circumferential direction of the opening, the lid member has a recess or an inclined surface on a side surface of the lid member that is connected to the gap, A cartridge characterized in that the gap and at least a part of the opening of the recess or the inclined surface are formed outside the joint portion.

[0055] (Configuration 14) 14. The cartridge according to claim 13, wherein the gap is formed on a side surface of the cover member in the longitudinal direction.

[0056] (Configuration 15) the cover member has a flat plate portion and a protrusion protruding from the flat plate portion in a thickness direction of the flat plate portion, the protrusion is joined to the liquid containing member to form the joined portion; The cartridge according to Aspect 13 or Aspect 14, wherein the gap is formed between the liquid containing member and the flat plate portion.

[0057] (Configuration 16) the liquid containing member has an absorbent body therein for holding the liquid; 16. The cartridge according to any one of configurations 13 to 15, wherein the cover member has a protrusion that abuts against the absorber.

[0058] (Configuration 17) the liquid containing member has an absorbent body therein for holding the liquid; 17. The cartridge according to any one of configurations 13 to 16, further comprising a partition member disposed between the absorbent body and the cover member and having a protrusion that abuts against the absorbent body.

[0059] (Configuration 18) The cover member has a support portion, 18. The cartridge of claim 17, wherein the partition member has a fitting portion into which the support portion is fitted.

[0060] (Configuration 19) 19. The cartridge according to any one of configurations 13 to 18, wherein the entire area of ​​the opening of the recess is formed outside the joint. [Explanation of symbols]

[0061] 4 Separation pin (component) 100 cartridges 120 Liquid containing member 121 Aperture 130 absorber 140 Partition member 150 Lid member 153 Gap

Claims

1. a liquid containing member having an opening and containing a liquid therein; a cover member for covering the opening; A method for disassembling a cartridge having the liquid containing member and the lid member are joined at a joint, a gap is formed between the rear surface of the lid member and the liquid containing member; a step of inserting a member through the gap and abutting the member against the joint, thereby separating the liquid containing member and the cover member;

2. the cover member has an inclined surface that is connected to the gap and inclined toward the gap, The method for disassembling a cartridge according to claim 1 , further comprising the step of pushing the member into the gap while the member is in contact with the inclined surface.

3. The gap is formed on a side surface of the cover member in the longitudinal direction, The method for disassembling a cartridge according to claim 1 , wherein the separating step includes inserting a member into the gap from the longitudinal direction.

4. The joint is formed around the circumferential direction of the opening, The method for disassembling a cartridge according to claim 1 , wherein the gap is formed outside the joint portion.

5. the cover member has a flat plate portion and a protrusion protruding from the flat plate portion in a thickness direction of the flat plate portion, the protrusion is joined to the liquid containing member to form the joined portion; The method for disassembling a cartridge according to claim 4 , wherein the gap is formed between the liquid containing member and the flat plate portion.

6. the lid member has a recessed portion on a side surface of the lid member that is connected to the gap, At least a part of the opening of the recess is formed outside the joint, The method for disassembling a cartridge according to claim 4 , further comprising the step of inserting the member into the recess, thereby guiding the member into the gap.

7. a liquid containing member having an opening and containing a liquid therein; a first cover member that covers the opening; A method for disassembling a cartridge having the liquid containing member and the first cover member are joined at a joint; a gap is formed between the rear surface of the first cover member and the liquid containing member; a step of inserting a member through the gap and bringing the member into contact with the joint portion, thereby separating the liquid containing member and the first cover member; refilling the liquid containing member with liquid; a step of joining the first lid member or a second lid member different from the first lid member to the liquid containing member so as to cover the opening; A method for remanufacturing a cartridge, comprising:

8. the first cover member is connected to the gap and has an inclined surface inclined toward the gap, The method for remanufacturing a cartridge according to claim 7 , further comprising the step of pushing the member into the gap while the member is in contact with the inclined surface.

9. the gap is formed on a side surface of the first cover member in the longitudinal direction, The method for remanufacturing a cartridge according to claim 7 , wherein the separating step includes inserting a member into the gap from the longitudinal direction.

10. The joint is formed around the circumferential direction of the opening, The method for remanufacturing a cartridge according to claim 7 , wherein the gap is formed outside the joint portion.

11. the first cover member has a flat plate portion and a protrusion protruding from the flat plate portion in a thickness direction of the flat plate portion, the protrusion is joined to the liquid containing member to form the joined portion; The method for remanufacturing a cartridge according to claim 10 , wherein the gap is formed between the liquid containing member and the flat plate portion.

12. the first cover member has a recessed portion on a side surface of the first cover member that is connected to the gap, At least a part of the opening of the recess is formed outside the joint, The method for remanufacturing a cartridge according to claim 10 , further comprising the step of guiding the member into the gap by inserting the member into the recess.

13. a liquid containing member having an opening and containing a liquid therein; a cover member for covering the opening; A cartridge having the liquid containing member and the lid member are joined at a joint, a gap is formed between the rear surface of the lid member and the liquid containing member; The joint portion is formed around the circumferential direction of the opening, the lid member has a recess or an inclined surface on a side surface of the lid member that is connected to the gap, A cartridge characterized in that the gap and at least a part of the opening of the recess or the inclined surface are formed outside the joint portion.

14. The cartridge according to claim 13 , wherein the gap is formed on a side surface of the cover member in the longitudinal direction.

15. the cover member has a flat plate portion and a protrusion protruding from the flat plate portion in a thickness direction of the flat plate portion, the protrusion is joined to the liquid containing member to form the joined portion; The cartridge according to claim 13 , wherein the gap is formed between the liquid containing member and the flat plate portion.

16. the liquid containing member has an absorbent body therein for holding the liquid; The cartridge according to claim 13 , wherein the cover member includes a protrusion that abuts against the absorbent body.

17. the liquid containing member has an absorbent body therein for holding the liquid; The cartridge according to claim 13 , further comprising a partition member disposed between the absorbent body and the cover member and having a protrusion that abuts against the absorbent body.

18. The cover member has a support portion, The cartridge according to claim 17 , wherein the partition member has a fitting portion into which the support portion is fitted.

19. The cartridge according to claim 13 , wherein the entire area of ​​the opening of the recess is formed outside the joint portion.

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