Ink box

By using composite film material in the ink bag of the ink cartridge, combined with the isolation function of the base layer and the adsorption effect of the adsorption layer, the problem of ink leakage caused by cracks in the ink cartridge composite film material is solved, and the effect of reducing ink leakage and diffusion is achieved, and the yield rate of ink cartridges is improved.

CN222610744UActive Publication Date: 2025-03-14ZHUHAI NINESTAR MANAGEMENT CO LTD
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Patent Information

Application Number
CN202421527596.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2024-05-24
Filing Date
2024-06-28
Publication Date
2025-03-14
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

During the production and use of the composite film materials of existing ink cartridges, cracks are easily caused by repeated bending, excessive swelling, etc., which leads to ink leakage and defiles other ink bags, causing great losses.

Method used

An ink cartridge is designed, and its ink bag is made of a composite film material, which includes a base layer and an adsorption layer. The base layer acts to isolate gas, liquid and light. The adsorption layer is located on the side of the base layer away from the ink storage cavity. It is different from ink and is used to quickly adsorb leaked ink and limit its diffusion.

Benefits of technology

Through the isolation function of the base layer and the adsorption effect of the adsorption layer, the possibility and degree of diffusion of ink leakage are reduced, the pollution to other ink bags is reduced, and the yield of the ink cartridge is improved.

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Abstract

The utility model relates to an ink box, the ink box is used for being detachably connected with a mounting part of a printer, the ink box comprises an ink storage part, the ink storage part comprises an ink bag, and the ink bag is used for storing ink. The ink bag comprises a composite film and is provided with an ink storage cavity, and the ink storage cavity is defined by the composite film. The composite film comprises a base layer and an adsorption layer, the base layer is closer to the ink storage cavity than the adsorption layer, and the adsorption layer is located on the side, away from the ink storage cavity, of the base layer and used for adsorbing ink. When the base layer has cracks and ink leaks from the ink storage cavity to the side, away from the ink storage cavity, of the base layer through the cracks, the adsorption layer arranged on the side, away from the ink storage cavity, of the base layer can rapidly adsorb the leaked ink so as to limit the diffusion degree of the leaked ink. The color of the adsorption layer is different from that of the ink, so that leaked ink can be found in time.
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Description

Technical Field

[0001] The present application relates to the technical field of inkjet printing, and in particular to an ink cartridge. Background Art

[0002] There is a type of ink bag type ink cartridge product, which can be roughly divided into two parts in terms of structure: an ink bag for storing ink and a connecting component, and the two parts are assembled into one by snapping. The aforementioned ink bag is made of composite film material. During the production process of the ink cartridge, the ink bag part of the semi-finished or finished product may cause fatigue of the composite film material due to repeated bending, excessive swelling, etc., resulting in imperceptible cracks. In addition, during the stacking process, the stacking pressure may cause damage and leakage at the cracks and contaminate other ink bags, causing great losses. Utility Model Content

[0003] In view of this, the present application provides an ink cartridge, which is beneficial to reducing the degree of diffusion of leaked ink, thereby reducing the possibility of contaminating other ink bags.

[0004] The ink cartridge of the present application is used to be detachably connected to the mounting part of the printer, and the ink cartridge includes an ink storage part, and the ink storage part includes an ink bag, and the ink bag is used to store ink. The ink bag includes a composite film, and the ink bag is provided with an ink storage cavity, and the ink storage cavity is formed by enclosing the composite film. The composite film includes a base layer and an adsorption layer, and the base layer is closer to the ink storage cavity than the adsorption layer, and the adsorption layer is located on the side of the base layer away from the ink storage cavity, and the adsorption layer is used to adsorb ink. The color of the adsorption layer is different from the color of the ink.

[0005] Optionally, the thickness of the adsorption layer is greater than or equal to the thickness of the base layer.

[0006] Optionally, the adsorption layer is made of paper.

[0007] Optionally, the adsorption layer has pores.

[0008] Optionally, the base layer includes a first resin layer, a light-proof layer and a second resin layer. The first resin layer is closer to the ink storage cavity than the light-proof layer and the second resin layer. The light-proof layer is located on the side of the first resin layer away from the ink storage cavity, and the second resin layer is located on the side of the light-proof layer away from the first resin layer.

[0009] Optionally, at least one of the following settings is met:

[0010] Arrangement (a): the first resin layer is a chlorinated polyethylene film;

[0011] Setting (b): the light-shielding layer is aluminum film;

[0012] Configuration (c): The second resin layer is a nylon film.

[0013] Optionally, the thickness of the first resin layer and the thickness of the second resin layer are both greater than the thickness of the light-shielding layer.

[0014] Optionally, the composite membrane further comprises a water-proof layer, and the water-proof layer is arranged on a side of the adsorption layer away from the base layer.

[0015] Optionally, the waterproof layer is a light-transmitting resin film.

[0016] Optionally, the ink storage member further includes a lead-out component, which is disposed at one end of the ink bag. The lead-out component is provided with a lead-out channel, and the lead-out channel is communicated with the ink storage chamber.

[0017] Beneficial effects:

[0018] The base layer has a gas isolation function to reduce the possibility that the ink in the ink storage cavity is oxidized by the air outside the ink bag and causes the ink performance to deteriorate; the base layer also has a liquid isolation function to reduce the possibility that the ink in the ink storage cavity leaks to the outside of the ink bag; the base layer also has a light-shielding function to reduce the possibility that the ink in the ink storage cavity is affected by the light outside the ink bag and causes the ink performance to deteriorate; the base layer also has a certain degree of heat preservation function, thereby reducing the possibility that the ink in the ink storage cavity is affected by the temperature change outside the ink bag and causes the ink performance to deteriorate to a certain extent.

[0019] When cracks appear in the base layer, causing ink to leak from the ink storage cavity through the cracks to the side of the base layer away from the ink storage cavity, the adsorption layer arranged on the side of the base layer away from the ink storage cavity can quickly absorb the leaked ink to limit the diffusion of the leaked ink.

[0020] The color of the adsorption layer can be different from the color of the ink, for example, the color of the adsorption layer is lighter and the color of the ink is darker. Under this setting, there is an obvious color difference between the part of the adsorption layer that has absorbed ink and the part of the adsorption layer that has not absorbed ink, and relevant personnel can easily find the damaged ink storage part and take out the damaged ink storage part in time, thereby reducing the possibility of leaked ink contaminating other adjacent ink bags, ink storage parts or ink cartridges, thereby reducing the degree of adverse effects of ink leakage pollution on the ink cartridge yield rate.

[0021] In addition, the adsorption layer can also improve the overall light-shielding effect of the composite film, thereby reducing the possibility that the ink in the ink storage cavity is affected by the light of the ink bag and the ink performance is deteriorated. The adsorption layer can also improve the overall heat preservation effect of the composite film, thereby reducing the possibility that the ink in the ink storage cavity is affected by the temperature change outside the ink bag and the ink performance is deteriorated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of an ink storage member in a specific embodiment;

[0024] Figure 2 A cross-sectional view of an ink bag in a specific embodiment;

[0025] Figure 3 for Figure 2 A partial enlarged view of part A;

[0026] Figure 4 A partial cross-sectional view of a base layer in a specific embodiment;

[0027] Figure 5 It is a schematic structural diagram of an ink cartridge and a tray in a specific embodiment;

[0028] Figure 6 It is a schematic structural diagram of the installation part in a specific embodiment.

[0029] 20-Pallets;

[0030] 20a-first wall;

[0031] 20b - second wall;

[0032] 20c-accommodating bottom wall;

[0033] 20d-opening;

[0034] 20e-first side wall;

[0035] 20f - second side wall;

[0036] 210-accommodating chamber;

[0037] 21-tray positioning unit;

[0038] 22-Fixed structure;

[0039] 30-connecting parts;

[0040] 31-chip;

[0041] 32-accommodating cavity;

[0042] 40- ink storage part;

[0043] 41- ink bag;

[0044] 42-Export components;

[0045] 43-handle piece;

[0046] 44-composite membrane;

[0047] 441-base layer;

[0048] 441a-first resin layer;

[0049] 441b-light shielding layer;

[0050] 441c- second resin layer;

[0051] 442-adsorption layer;

[0052] 443-waterproof layer;

[0053] 45-ink storage chamber;

[0054] 50-installation part;

[0055] 51-ink supply needle;

[0056] 52-device side terminal portion;

[0057] 52t-stylus holder;

[0058] 53-limiting part;

[0059] 54-Locking part. DETAILED DESCRIPTION

[0060] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0061] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0062] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0063] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0064] An embodiment of the present application provides an ink cartridge, which is used to be detachably connected to a mounting portion of a printer. The ink cartridge can supply ink to the printer so that the printer can complete a printing operation.

[0065] The figures in this article establish a three-dimensional rectangular coordinate system XYZ, where the three coordinate axes of the X-axis, Y-axis, and Z-axis are perpendicular to each other. Among them, the width direction of the ink cartridge can be the extension direction of the X-axis, the height direction of the ink cartridge can be the extension direction of the Z-axis, and the length direction of the ink cartridge can be the extension direction of the Y-axis. Along the +Y axis direction (the direction in which the ink cartridge is installed, also the first direction) is the "front" of the ink cartridge, along the -Y axis direction is the "back" of the ink cartridge, along the +Z axis direction (plumb direction) is the "bottom" of the ink cartridge, and along the -Z axis direction is the "top" of the ink cartridge.

[0066] Please refer to Figure 1 As shown, the ink cartridge includes an ink storage member 40, and the ink storage member 40 includes an ink bag 41, and the ink bag 41 is used to store ink. Figure 2 As shown, the ink bag 41 includes a composite film 44, and the ink bag 41 is provided with an ink storage cavity 45, and the ink storage cavity 45 is formed by enclosing the composite film 44. Figure 3 As shown, the composite film 44 includes a base layer 441 and an adsorption layer 442. The base layer 441 is closer to the ink storage cavity 45 than the adsorption layer 442. The adsorption layer 442 is located on the side of the base layer 441 away from the ink storage cavity 45. The adsorption layer 442 has the function of absorbing leaked ink.

[0067] Please refer to Figure 3 As shown, the base layer 441 has a gas isolation function to reduce the possibility that the ink in the ink storage cavity 45 is oxidized by the air outside the ink bag 41 and causes the ink performance to deteriorate; the base layer 441 also has a liquid isolation function to reduce the possibility that the ink in the ink storage cavity 45 leaks to the outside of the ink bag 41; the base layer 441 has a light shielding function to reduce the possibility that the ink in the ink storage cavity 45 is affected by the light outside the ink bag 41 and causes the ink performance to deteriorate; the base layer 441 also has a certain degree of heat preservation function, thereby reducing the possibility that the ink in the ink storage cavity 45 is affected by the temperature change outside the ink bag 41 and causes the ink performance to deteriorate to a certain extent.

[0068] Please refer to Figure 3 As shown, when a crack appears in the base layer 441 causing ink to leak from the ink storage cavity 45 through the crack to the side of the base layer 441 away from the ink storage cavity 45, the adsorption layer 442 arranged on the side of the base layer 441 away from the ink storage cavity 45 can quickly adsorb the leaked ink to limit the diffusion of the leaked ink.

[0069] The color of the adsorption layer 442 can be different from the color of the ink, for example, the color of the adsorption layer 442 is lighter and the color of the ink is darker. Under this setting, there is an obvious color difference between the part of the adsorption layer 442 that has absorbed ink and the part of the adsorption layer 442 that has not absorbed ink, and relevant personnel can easily find the damaged ink storage part 40 and take out the damaged ink storage part 40 in time, thereby reducing the possibility of leaked ink contaminating other adjacent ink bags 41, ink storage parts 40 or ink cartridges, thereby reducing the degree of adverse effects of ink leakage pollution on the ink cartridge yield rate. For non-white ink, the color of the adsorption layer 442 can be white, or, for blue ink, the color of the adsorption layer 442 can be yellow.

[0070] In addition, the adsorption layer 442 can also improve the overall light shielding effect of the composite film 44, thereby reducing the possibility that the ink in the ink storage cavity 45 is affected by the light of the ink bag 41 and the ink performance is deteriorated. The adsorption layer 442 can also improve the overall heat preservation effect of the composite film 44, thereby reducing the possibility that the ink in the ink storage cavity 45 is affected by the temperature change outside the ink bag 41 and the ink performance is deteriorated.

[0071] Optionally, see Figure 3 As shown, the thickness of the adsorption layer 442 is greater than or equal to the thickness of the base layer 441. Under this setting, the adsorption volume of the adsorption layer 442 is larger, the adsorption effect is better, and the diffusion degree of the leaked ink can be better limited.

[0072] Optionally, the adsorption layer 442 is made of paper material. Paper material has the following advantages: paper material is widely available and cheap, paper material has strong adsorption performance for ink, and paper material is degradable and environmentally friendly.

[0073] Herein, kraft paper or other light-colored (different from the color of ink) paper materials having certain mechanical strength and adsorption performance can be used as the adsorption layer 442 .

[0074] Optionally, the adsorption layer 442 has pores, and the pores play a capillary role so that the leaked ink is stored in the pores, that is, the adsorption effect of the adsorption layer 442 of this embodiment is better.

[0075] Optionally, see Figure 4 As shown, the base layer 441 includes a first resin layer 441a, a light-shielding layer 441b, and a second resin layer 441c. The first resin layer 441a is closer to the ink storage cavity 45 than the light-shielding layer 441b and the second resin layer 441c. The light-shielding layer 441b is located on the side of the first resin layer 441a away from the ink storage cavity 45, and the second resin layer 441c is located on the side of the light-shielding layer 441b away from the first resin layer 441a.

[0076] Please refer to Figure 4 As shown, the first resin layer 441a can have good weather resistance, good oil resistance, good chemical resistance and good aging resistance, the light-shielding layer 441b can be used to reduce the possibility of ink performance degradation caused by the ink in the ink storage cavity 45 being affected by the light outside the ink bag 41, and the second resin layer 441c can have high mechanical strength, high rigidity, high hardness, good toughness, good aging resistance and good dimensional stability. Since the first resin layer 441a is used to directly contact the ink in the ink storage cavity 45, the first resin layer 441a can reduce the possibility of the light-shielding layer 441b being corroded by the ink and oxygen in the ink storage cavity 45, so that the light-shielding layer 441b can have good light-shielding performance. The second resin layer 441c can play a good role in isolating the surface of the light-shielding layer 441b that is away from the first resin layer 441a, so as to reduce the possibility of the surface of the light-shielding layer 441b that is away from the first resin layer 441a being corroded by oxygen, water or organic solvent outside the ink bag 41, so that the light-shielding layer 441b can have good light-shielding performance. The base layer 441 composed of the first resin layer 441a, the light-shielding layer 441b and the second resin layer 441c has good gas isolation function, good liquid isolation function, good light-shielding performance, good structural reliability and a long service life.

[0077] Please refer to Figure 4 As shown, the first resin layer 441a can be specifically a chlorinated polyethylene film, which has good weather resistance, good oil resistance, good chemical resistance and good aging resistance. The light shielding layer 441b can be a common metal film, such as an aluminum film, etc., to have good ductility. The second resin layer 441c can be specifically a nylon (polyamide resin) film, which has high mechanical strength, high rigidity, high hardness, good toughness, good aging resistance and good dimensional stability.

[0078] In other embodiments, the first resin layer 441a may be other polymer materials that meet the above-mentioned corresponding required properties, the shading layer 441b may be other metal materials with shading properties, and the second resin layer 441c may be other polymer materials that meet the above-mentioned corresponding required properties.

[0079] Optionally, see Figure 4As shown, the thickness of the first resin layer 441a and the thickness of the second resin layer 441c are both greater than the thickness of the light-shielding layer 441b. The first resin layer 441a is the structural layer closest to the ink in the base layer 441. The thicker first resin layer 441a can reduce the possibility of ink passing through the first resin layer 441a and leaking to the outside of the base layer 441. The second resin layer 441c is the outermost structural layer in the base layer 441. The thicker second resin layer 441c can better reduce the possibility of the light-shielding layer 441b being corroded by oxygen, water or organic solvents located outside the ink bag 41.

[0080] Optionally, see Figure 3 As shown, the composite film 44 further includes a water-proof layer 443, which is disposed on the side of the adsorption layer 442 away from the base layer 441. The water-proof layer 443 can further limit the diffusion degree of the leaked ink after passing through the adsorption layer 442, thereby further reducing the possibility of the leaked ink contaminating other adjacent ink bags 41, ink storage parts 40 or ink cartridges, thereby reducing the adverse effect of ink leakage pollution on the ink cartridge yield rate.

[0081] Optionally, see Figure 3 As shown, the waterproof layer 443 is a light-transmitting resin film. This arrangement makes it easy for relevant personnel to observe whether the adsorption layer 442 has absorbed the leaked ink, and further makes it easy for relevant personnel to determine whether the ink bag 41 has leaked ink.

[0082] The waterproof layer 443 may be a colorless transparent resin film with strong light transmittance. Furthermore, the waterproof layer 443 may be a PET (polyethylene terephthalate) film, so that the waterproof layer 443 has good fatigue resistance, good friction resistance and good dimensional stability, thereby effectively blocking the ink from passing through the adsorption layer 442.

[0083] It can be seen from the above that the multi-layer anti-leakage structure of the composite film 44 can enhance the anti-leakage performance of the ink bag 41 .

[0084] Optionally, see Figure 1 As shown, the ink storage member 40 further includes a guide member 42, which is disposed at one end (the +Y axis direction end) of the ink bag 41, and the guide member 42 is provided with a guide channel (not shown in the figure), and an ink outlet (not shown in the figure) is disposed on the +Y axis direction side of the guide channel. Figure 2 The ink storage chamber 45 shown is connected to allow ink to flow out of the ink storage chamber 45 to the outside of the ink bag 41 through the ink outlet of the outlet channel.

[0085] Optionally, see Figure 5As shown, the ink storage member 40 further includes a handle member 43 , which is disposed on the ink bag 41 , so that the user can operate the ink cartridge (move the ink cartridge, install the ink cartridge or remove the ink cartridge) through the handle member 43 .

[0086] Optionally, see Figure 5 As shown, the ink cartridge of the embodiment of the present application further includes a connecting component 30, which is detachably connected to the ink storage member 40, and is located at the +Y axis direction end of the ink storage member 40. The connecting component 30 includes a main body, and the main body is provided with a chip 31 at one end away from the ink bag 41 (i.e., the +Y axis direction end). The main body is provided with a receiving cavity 32, which runs through the main body in the Y axis direction, and the receiving cavity 32 is used for the lead-out member 42 to pass through along the +Y axis direction.

[0087] It should be noted that the application scope of the ink cartridge provided in the embodiment of the present application is not limited to ink bag type ink cartridges, but can also be applied to other types of ink cartridges with bag-like structures for storing ink, that is, ink cartridges that introduce a structural layer in the bag-like structure that has the same adsorption function as the above-mentioned adsorption layer and / or a function that is easy to display the color of leaked ink should be regarded as solutions that can be covered by the embodiment of the present application.

[0088] The rest of this article describes the installation structure of the ink cartridge and printer.

[0089] Printers include: Figure 5 The tray 20 shown in the figure can form a combination after the ink cartridge is placed on the tray 20. The combination can be installed along the ink cartridge installation direction as shown in the figure. Figure 6 On the mounting portion 50 shown.

[0090] Please refer to Figure 5 As shown, the tray 20 is basically in the shape of a rectangular parallelepiped and has an opening. The tray 20 has a first wall 20a, a second wall 20b, a receiving bottom wall 20c, an opening 20d, a first side wall 20e and a second side wall 20f. The direction in which the opening 20d points to the receiving bottom surface 20c is the +Z axis direction, which is also the plumb direction, and the -Z axis direction is the reverse plumb direction. The direction in which the second wall 20b points to the first wall 20a is the +Y axis direction, which is also the ink cartridge installation direction in which the combination formed by the ink cartridge and the tray 20 is installed on the mounting portion 50, and the -Y axis direction is the direction in which the combination formed by the ink cartridge and the tray 20 is removed from the mounting portion 50, and the -Y axis direction is the reverse ink cartridge installation direction. The direction in which the second side wall 20f points to the first side wall 20e is the +X axis direction. The first wall 20a is the tray wall on the front end side of the ink cartridge installation direction. The three-dimensional coordinate system of the ink cartridge, the three-dimensional coordinate system of the mounting portion 50 and the three-dimensional coordinate system of the tray 20 are consistent.

[0091] like Figure 6As shown, the mounting portion 50 includes a frame, a device-side terminal portion 52, two stopper portions 53, an ink supply needle 51 and a locking portion 54. The device-side terminal portion 52 includes a contact needle holder 52t, and the contact needles provided on the contact needle holder 52t are used to abut against the chip 31 of the ink cartridge.

[0092] Please refer to Figure 5 As shown, the tray 20 further comprises a receiving cavity 210, a fixing structure 22 and a tray positioning portion 21. The receiving cavity 210 is used to receive the ink cartridge. Two tray positioning portions 21 are provided on the first wall 20a. The tray positioning portions 21 may be holes. The fixing structure 22 may be a slot structure, a winding channel is formed in the slot structure, and an entrance of the fixing structure 22 (slot structure) is provided on the first wall 20a.

[0093] The locking portion 54 enters from the entrance and moves along the winding groove to the locking position. When the tray 20 is installed on the mounting portion 50, the tray positioning portion 21 is combined with the limiting portion 53 to position the tray 20 at a rough position in a direction perpendicular to the mounting direction, and the fixing structure 22 is combined with the locking portion 54 to prevent the tray 20 from escaping from the mounting portion 50.

[0094] When the ink cartridge is installed in the installation portion 50 , the ink supply needle 51 passes through the ink outlet of the ink cartridge and is connected to the outlet channel of the ink cartridge, so that the ink in the ink bag 41 can be supplied to the printer.

[0095] When the ink cartridge is mounted on the mounting portion 50, the chip 31 contacts and is electrically connected to the device-side terminal portion 52. In the mounted state, the ink supply needle 51 passes through the opening of the accommodating chamber 32 in the +Y direction and docks with the lead-out component 42.

[0096] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An ink cartridge, the ink cartridge being used to be detachably connected to a mounting portion of a printer, characterized in that: The ink cartridge includes an ink storage member, the ink storage member includes an ink bag, and the ink bag is used to store ink; The ink bag comprises a composite film, and the ink bag is provided with an ink storage cavity, and the ink storage cavity is formed by enclosing the composite film; The composite film comprises a base layer and an adsorption layer, wherein the base layer is closer to the ink storage cavity than the adsorption layer, the adsorption layer is located on a side of the base layer away from the ink storage cavity, and the adsorption layer is used to adsorb ink; The color of the adsorption layer is different from the color of the ink.

2. The ink cartridge according to claim 1, characterized in that: The thickness of the adsorption layer is greater than or equal to the thickness of the base layer.

3. The ink cartridge according to claim 1, characterized in that: The material of the adsorption layer is paper material.

4. The ink cartridge according to claim 1, characterized in that: The adsorption layer has pores.

5. The ink cartridge according to any one of claims 1 to 4, characterized in that: The base layer includes a first resin layer, a light-shielding layer and a second resin layer. The first resin layer is closer to the ink storage cavity than the light-shielding layer and the second resin layer. The light-shielding layer is located on the side of the first resin layer away from the ink storage cavity, and the second resin layer is located on the side of the light-shielding layer away from the first resin layer.

6. The ink cartridge according to claim 5, characterized in that: At least one of the following settings is met: Setting a: the first resin layer is a chlorinated polyethylene film; Setting b: the light-shielding layer is an aluminum film; Setting c: The second resin layer is a nylon film.

7. The ink cartridge according to claim 5, characterized in that: The thickness of the first resin layer and the thickness of the second resin layer are both greater than the thickness of the light-shielding layer.

8. The ink cartridge according to any one of claims 1 to 4, characterized in that: The composite membrane further comprises a water-proof layer, and the water-proof layer is arranged on a side of the adsorption layer away from the base layer.

9. The ink cartridge according to claim 8, characterized in that: The water-proof layer is a light-transmitting resin film.

10. The ink cartridge according to any one of claims 1 to 4, characterized in that: The ink storage member further includes a guide component, which is disposed at one end of the ink bag. The guide component is provided with a guide channel, and the guide channel is communicated with the ink storage cavity.