JPH09136425A - Ink cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable ink cartridge not leaking ink during the transportation and which can prevent ink from scattering from an ink feed port when opened. SOLUTION: An ink feed port 2 is formed at a side face of an ink cartridge main body 1 schematically parallel to a separation direction F1 of a seal member 4. Moreover, an atmosphere communication port 3 is formed at a bottom face of the ink cartridge main body 1 schematically orthogonal to the separation direction F1 of the seal member 4. Accordingly, a first sealing part A of the seal member 4 sealing the ink feed port 2 is harder to separate than a second sealing part B of the seal member 4 sealing the atmosphere communication port 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a replaceable ink cartridge, and more particularly to an ink cartridge which is replaceably connected to a print head and supplies ink to the print head.

[0002]

2. Description of the Related Art Conventionally, for example, a replaceable ink cartridge has been proposed which is constructed separately from an ink jet print head and is connectable to the print head through an ink supply pipe or the like.

Such an ink cartridge has a structure in which ink is contained in an ink cartridge body made of plastic or the like, and an ink supply port and an atmosphere communication port are sealed by a seal member in preparation for distribution, so that vibration and vibration may occur. Care is taken to prevent ink leaks due to changes in environmental temperature and atmospheric pressure. Then, at the time of use, the seal member is peeled off by the user. At this time, since tension or shearing force for peeling acts on the seal member, it is necessary to form the seal member using a material that can withstand the peeling, for example, by laminating an aluminum thin piece and a resin material. A flexible material such as aluminum laminated resin is used.

[0004]

By the way, in many cases, the ink cartridge as described above is configured such that an ink absorber is loaded in the ink cartridge body and the ink is held in the ink absorber. When the ink jet print head is connected to the print head, the ink is closely held near the ink supply port and becomes sparse on the air communication port side in order to easily supply the ink to the print head. Is being done.

Conventionally, in such an ink cartridge, a peeling force simultaneously acts on two sealing portions of the seal member with respect to the ink supply port and the atmosphere communication port depending on how the user opens the seal member by peeling off the seal member. As a result, the ink supply port may be opened first.

However, when the ink supply port side is opened prior to the atmosphere communication port side, if the internal pressure is higher than the atmospheric pressure due to changes in temperature and atmospheric pressure, the ink is scattered in all directions from the ink supply port. , The user's clothes and hands may get dirty. In addition, such a problem is the same even in the case where a gas such as air is sealed in the ink cartridge main body together with the ink, and there is a possibility that the ink is scattered from the ink supply port due to the expansion pressure of the gas. is there.

Further, when the seal member is linearly quickly peeled off from the ink cartridge main body, the ink in the ink cartridge main body may come out from the ink supply port or the like. For example, as shown in FIG. 2A, the right side portion of the ink cartridge body 1 in FIG.
When the operation portion 4A of the seal member 4 that seals the ink supply port 2 and the atmosphere communication port 3 is gripped and they are linearly and rapidly separated in the left-right direction in the drawing so as to separate them from each other, As shown in FIG. 2B, the ink 7 in the ink cartridge body 1 may come out from the ink supply port 2 or the like due to its own inertial force. Reference numeral 6 denotes a part of a package for packaging the ink cartridge body 1, and a portion (not shown) that covers the right side portion of the ink cartridge body 1 in FIG. 2A is prior to peeling off the seal member 4. To be separated.

It is an object of the present invention to provide a highly reliable ink cartridge which does not leak ink during distribution and which can prevent ink from scattering from the ink supply port during opening.

[0009]

SUMMARY OF THE INVENTION An ink cartridge of the present invention is an ink cartridge main body having an ink contained therein and having an ink supply port and an atmosphere communication port formed therein, and is closely releasably attached to the surface of the ink cartridge. In the ink cartridge having a first sealing portion that seals the ink supply port and a sealing member that has a second sealing portion that seals the atmosphere communication port, the sealing member is
A peeling force is applied for peeling off the seal member, and the peeling force is applied to a plurality of surfaces of the ink cartridge body that form different angles with respect to the direction of the peeling force applied to the operation portion. It is characterized in that it has a close contact portion, and the first sealing portion is located closer to the close contact portion with the surface of the ink cartridge body that forms an angle that is more difficult to peel off than the second sealing portion.

In the ink cartridge of the present invention, when the peeling force is applied to the seal member, first, the opening portion of the atmosphere communication port is opened before the first sealing portion that seals the opening portion of the ink supply port. The atmosphere sealing port is opened by receiving a force in a direction in which the second sealing portion that seals is peeled off easily. By opening the atmosphere communication port, the internal pressure of the ink cartridge main body becomes the same as the external pressure, and then the first sealing portion opens the ink supply port to prevent the ink from popping out due to the difference between the internal pressure and the external pressure in the ink cartridge main body. Further, when the seal member is peeled off, the ink cartridge main body is rotated to prevent the ink from scattering due to the inertia of the ink itself.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 (a) is a perspective plan view of a replaceable ink cartridge according to the present invention packaged in a package, and FIG. 1 (b) is an X- line in FIG. 1 (a). A cross-sectional view taken along the X-ray, and FIG. 7C is a cross-sectional view taken along the Y-Y line in FIG.

In these figures, 1 is an ink cartridge main body (hereinafter simply referred to as "main body"), 2 is its ink supply port, 3 is an atmosphere communication port, and 4 is these ink supply port 2 and atmosphere communication port 3 A sealing member that seals
Reference numeral 5 is a package for packaging the entire main body 1. Ink is stored inside the main body 1. In the case of this example, as described later, a negative pressure generating member that absorbs and holds the ink is stored and a negative port that communicates with the ink supply port 2 and the atmosphere communication port 3 is connected. A pressure generating member accommodating portion and an ink accommodating portion that accommodates ink are formed adjacent to the accommodating portion.

A cylindrical color rib 2A and a cylindrical color rib 3A having a rectangular cross section are formed around the openings of the ink supply port 2 and the atmosphere communication port 3, respectively. The ink supply port 2 has substantially the same diameter as the inner peripheral surface of the color rib 2A and is formed to have a larger diameter than the atmosphere communication port 3. Further, the thickness of the color rib 2A is set to be larger than the thickness of the color rib 3A, and the end face of the color rib 2A with which the seal member 4 releasably adheres is greater than the end face of the color rib 3A with which the seal member 4 releasably adheres. Is also getting wider.

On the other hand, the sealing member 4 has a sufficient strength against pulling and the like and is a flexible barrier material, for example, a single layer or a composite layer composed of multiple layers of plastic film. Desirably, it is preferable that the ribs have weldability to the end faces of the color ribs 2A and 3A. The ink supply port 2 and the atmosphere communication port 3 are sealed by the seal member 4. Hereinafter, in the seal member 4, the portion that seals the ink supply port 2 is referred to as a first sealing portion A,
The portion that seals the atmosphere communication port 3 is referred to as a second sealing portion B.
The sealing portions A and B of the seal member 4 seal the ink supply port 2 and the atmosphere communication port 3 so as to prevent the evaporation of the ink in the main body 1 and withstand the expansion of the air or the ink in the main body 1. The color ribs 2A and 3A may be adhered to the color ribs 2A and 3A by any method other than welding, such as pressure bonding or adhesion. In order to secure high reliability, it is preferable to weld a welding layer made of the same material as the main body 1. The upper side 4A of the seal member 4 is welded to the inner surface of the package 5 as described later. In the seal member 4, the hatched portion C in FIG. 1 including the upper side portion 4A is called an operation portion.

The package 5 has a bag shape that encloses the entire main body 1. In this example, the peripheral portion 6 is welded to form a bag shape, and the operating portion C of the seal member 4 is formed together with the portion 6. It is welded. It suffices that the package 5 can be joined to the operating portion C of the seal member 4 by pressure bonding, adhesion, welding, or the like, and in addition to the same material as the seal member 4, the use of materials such as paper generally used in the packaging field It is possible.
In this example, the welding layers of the seal member 4 and the package 5 are fused by heat and integrated.

Next, instead of describing the structure of the seal member 4, the mounting process thereof will be described.

3 (a) to 3 (d) are process steps for welding the seal member 4 to the ink supply port 2 and the atmosphere communication port 3 of the main body 1.

First, a flat seal member 4 as shown in FIG. 3A is prepared, and the seal member 4 is provided with a collar rib 3A (not shown in FIG. 3) of the atmosphere communication port 3 at the bottom of the main body 1. ) To seal the atmosphere communication port 3 (FIG. 3).
(B)). Next, as shown in FIG. 3C, the seal member 4 is bent and the seal member 4 is welded to the color rib 2A of the ink supply port 2. After that, the seal member 4 is attached to FIG.
Bending along the folding line 4B in (c) and the ridgelines 1A and 1B on the outside of the main body 1 results in the form of FIG. 3 (d). The ink cartridge shown in FIG. 1 is obtained by packaging the main body 1 and the seal member 4 in this form in a package 5.

Since the ink supply port 2 and the atmosphere communication port 3 of the ink cartridge constructed as described above are located on different surfaces of the main body 1, as shown in FIG. ) When a peeling force in the direction of the middle arrow F1 is applied, the second sealing portion B that seals the atmosphere communicating portion 3 is easily peeled off, while the first sealing portion A that seals the ink supply port 2 is formed.
Is difficult to peel off because it receives a force in the shearing direction.

Next, the opening process of the ink cartridge will be described.

FIGS. 4A to 4C are explanatory views of the opening process of the ink cartridge of the present invention.

First, prior to peeling off the seal member 4, from the portion of the cutout 8 in FIG.
As shown in FIG.
The right side portion of the package 5 in (a) is removed. The state at this time is the state of FIG. The left side portion of the package 5 in FIG. 4 (a) forms an ink scattering prevention portion for preventing ink scattering, and the handle end 9 thereof has a stepped portion formed by cutting like 9A and 9B, and Makes it easy to hold the package 5. Body 1
In order to take out the package 5 from the package 5, when the user holds the projecting grip portion 9B and applies a peeling force in the direction of the arrow F1, the action point P of the peeling force is at the atmosphere communication port 3 rather than the ink supply port 2. Located close to. Therefore, the distance between the action point P and the second sealing portion B is shorter than the distance between the action point P and the first sealing portion A.

When the user grips the package 5 and the main body 1 and applies the peeling force of the arrows F1 and F2 to them, the first sealing portion A is far from the point of action P, Peeling direction from color rib 2A (Fig. 4
Since the peeling force in the left direction in FIG. 4A is applied so as to be orthogonal to the upper side in FIG. 4A, the peeling is not performed immediately. On the other hand, with respect to the second sealing portion B, it is close to the point of action P, and the peeling direction from the color rib 3A (FIG. 4A).
Since a peeling force in the same direction is applied to (in the left direction),
Peel immediately. Therefore, the second sealing portion B is peeled off before the first sealing portion A.

After the second sealing portion B is peeled off,
As shown in FIG. 4 (b), the main body 1 has S near the first sealing portion A.
Package 5 rotating around the point in the direction of arrow E
Get away from. As a result, the peeling direction of the first sealing portion A from the color rib 2A and the peeling direction F1 are the same, that is, the first sealing portion A is easily peeled off. As described above, the main body 1 rotates in the direction of the arrow E, and the first sealing portion A is peeled off with the rotation.

As a result, the second sealing portion B is separated from the color rib 3A before the first sealing portion A is separated from the color rib 2A. That is, the atmosphere communication port 3 is opened before the ink supply port 2, and conversely, ink scattering that occurs when the ink supply port 2 is opened first is prevented. The relationship between the opening order and the ink scattering will be described later together with the internal structure of the main body 1.

Further, when the seal member 4 is peeled off, the main body 1 does not rotate as shown in FIG. 4 and does not move in the linear direction as shown in FIG. The problem that the ink cannot follow the rapid linear movement of the tank body 1 and leaks from the ink supply port 2 or the like to stain the user's hand or clothes can be eliminated.

(Second Embodiment) FIGS. 5 and 6 are explanatory views of a second embodiment of the present invention. FIG. 5 (a) is a perspective plan view of an ink cartridge of this example, and FIG. 5 (b). 6A is a cross-sectional view taken along the line YY of FIG. 6A, and FIG. 6 is an explanatory view of a mounting process of the seal member 4.

In this example, the ink supply port 2 and the atmosphere communication port 3 are both formed on the same surface of the main body 1. The folded-back portion 4C of the seal 4 near the ink supply port 2 side is welded to a surface (lower surface in FIG. 5A) different from the surface of the main body 1 on which the ink supply port 2 and the atmosphere communication port 3 are formed. Part D. When a peeling force in the direction of the arrow F1 is applied to the operation portion C, the welding portion D makes it difficult to peel off near the ink supply port 2 side. As a result, the second sealing portion B is always peeled before the first sealing portion A, and the same effect as that of the above-described first embodiment is exhibited.

In particular, since the welded portion D is peelably adhered to the lower surface of the main body 1 which is orthogonal to the peeling direction F1,
Inevitably, the peeling direction F1 is orthogonal to the peeling direction of the welded portion D from the lower surface of the main body 1 (downward in FIG. 5A), and the welded portion D is difficult to peel off. The fact that the welded portion D that is hard to peel off is located in the vicinity of the second sealing portion A is extremely advantageous in delaying the peeling of the first sealing portion A from the peeling of the second sealing portion B. is there.

(Regarding Internal Structure of Tank Body 1) Next, an example of the internal structure of the tank body 1 will be described with reference to FIG.

The main body 1 of FIG. 7 is similar to that of the first embodiment described above, and has an ink supply port 2 connected to the ink jet recording head on the side surface orthogonal to the peeling direction F1. The atmosphere communication port 3 is formed on the bottom surface that is formed and is parallel to the peeling direction F1. Further, inside the main body 1, a negative pressure generating member accommodating portion 11 that accommodates a negative pressure generating member 20 that communicates with each of the ink supply port 2 and the atmosphere communication port 3 and absorbs and retains ink, and the accommodating portion 11 On the other hand, an ink containing portion 13 that communicates with the gap 12A below the rib 12 and contains ink is formed.

In the case of this example, the atmosphere communication port 3 has the communication passage 14
Through the negative pressure generating member accommodating portion 11. The communication passage 14 is a portion 14A extending in the left-right direction in FIG.
And a portion 14B extending in the vertical direction in the figure, the former portion 14A is formed between the upper surface of the tank body 1 and the cover body 15 attached to the upper surface. Further, a space 21 is formed by a rib in the upper portion of the housing portion 11.

The ink distribution in the negative pressure generating member accommodating portion 11 is such that the ink supply port 2 side is dense and the atmosphere communication port 3 side is close in order to facilitate ink supply to the ink jet recording head. There is as little ink as possible. Therefore, when peeling off the seal member 4, it is preferable to open the atmosphere communication port 3 side earlier than the ink supply port 2 side, and conversely, if the ink supply port 3 side is opened first, the ink Ink may be scattered from the supply port 2 to the outside. When the internal pressure of the main body 1 which is sealed by the seal member 4 is rising due to the change of environment (change of temperature and atmospheric pressure), the air communication port 3 side having a smaller opening area than the ink supply port 2 is opened first. By,
It is possible to suppress the ejection of ink from the ink supply port 2 by returning the internal pressure of the main body 1 to the atmospheric pressure state.

When the main body 1 is used, the negative pressure generating member 20 is inserted by inserting the ink introduction tube 31 on the ink jet recording head side of the ink jet recording apparatus into the ink supply port 2.
Press. The filter 3 is provided at the opening of the introduction pipe 31.
2 may be installed. Then, when the inkjet recording apparatus is operated, ink is ejected from the ink ejection port of the inkjet recording head, and the containing portion 11
Ink suction force is generated inside. Due to this suction force, the ink is supplied from the ink containing portion 13 to the gap portion 1 below the rib 12.
It passes through 2A to enter the negative pressure generating member accommodating portion 11, passes through the negative pressure generating member 20, is drawn into the introduction pipe 31, and is supplied to the inkjet recording head. This allows
Ink storage portion 13 that is closed except for the gap portion 12A
The internal pressure of the ink is reduced, and a pressure difference is generated between the ink containing portion 13 and the negative pressure generating member containing portion 11. When the recording operation of the ink jet recording apparatus continues and the supply of ink continues, the pressure difference continues to increase, but since the negative pressure generating member accommodating portion 11 is opened to the atmosphere by the atmosphere communicating hole 3,
External air passes through the negative pressure generating member 20 and enters the ink containing portion 13 through the gap 12A below the rib 12. At this point, the pressure difference between the ink containing portion 13 and the negative pressure generating member containing portion 11 is eliminated. During the recording operation, ink is smoothly supplied by repeating such an operation. Further, the ink in the ink containing portion 13 can be used almost all except the ink attached to the wall surfaces in the first and second ink containing portions 13A and 13B, so that the ink use efficiency is high. During the non-recording operation, the capillary force of the negative pressure generating member 20 itself is exerted to prevent ink leakage from the inkjet recording head.

(Regarding the printing apparatus) In FIG.
Reference numeral 101 is a printer, 102 is an operation panel portion provided on the front portion of the upper surface of the housing of the printer 101, 103 is a paper feed cassette mounted from an opening on the front surface of the housing,
Reference numeral 104 is a paper (recording medium) supplied from the paper feed cassette 3, and 105 is a paper discharge tray for holding the paper 104 discharged through the paper conveyance path in the printer 101.
Reference numeral 106 is a main body cover having an L-shaped cross section. The body cover 106 covers the opening 107 formed in the right front part of the housing, and is rotatably attached to the inner end of the opening 107 by a hinge 108. A carriage 110 supported by a guide or the like (not shown) is arranged inside the housing. The carriage 110 is provided so as to be capable of reciprocating along the width direction of the paper passing through the paper transport path, that is, along the longitudinal direction of the guide and the like.

The carriage 110 in this embodiment includes a stage 110a which is held horizontally by a guide or the like,
An opening (not shown) formed on the stage 110a in the vicinity of the guide for mounting the inkjet head, and the ink cartridges 1Y, 1M, 1C and 1B mounted on the stage 110a in front of the opening.
a cartridge garage 110b for accommodating k,
The cartridge 1Y housed in this garage 110b,
The cartridge holder 110c for preventing separation of 1M, 1C and 1Bk is roughly configured.

The stage 110a is slidably supported by the guide at its rear end, and the lower side of its front end is mounted on a guide plate (not shown). The guide plate may function as a paper pressing member for preventing the paper 104 conveyed through the above-described paper conveyance path from rising, and the stage 110a may be used as a guide according to the thickness of the paper 104. It may have a function of lifting in a cantilever manner.

An ink jet head (not shown) is attached to the opening of the stage 110a with its ink ejection port facing downward.

In the cartridge garage 110b,
Through holes for simultaneously storing the four ink cartridges 1Y, 1M, 1C, 1Bk are formed in the front-rear direction, and engaging recesses 110d with which engaging claws of the cartridge holder 110c are engaged are formed on both outer sides. Has been done.

The cartridge holder 10c is rotatably attached to the front end of the stage 110a by a hinge 116. The size from the front end surface of the garage 110b to the hinge 116 is determined in consideration of the size of the cartridge 1Y, 1M, 1C, 1Bk protruding from the front end of the garage 110b when the cartridge 1Y, 1M, 1C, 1Bk is housed in the garage 110b. Have been set. The cartridge holder 110c has a substantially rectangular plate shape. The cartridge holder 110c is provided with a pair of engaging claws 110e projecting in a direction orthogonal to the plate surface on both side portions of the upper portion apart from the lower portion fixed by the hinge 116, and the holder 110c is closed. When engaged, the pair of engaging claws 110e are inserted into the engaging recesses 110d of the garage 110b.
Are adapted to engage. Further, the plate portion of the holder 110c is provided with the cartridges 1Y, 1M, 1C, 1B.
A fitting hole 120 for fitting with the handle part of k is formed. The fitting hole 120 has a position, shape and size corresponding to the handle portion.

[0042]

As described above, in the ink cartridge of the present invention, when the peeling force is applied to the seal member, the ink cartridge is sealed before the first sealing portion that seals the ink supply port.
Since the second sealing portion that seals the atmosphere communication port is configured to exert a force in a direction in which it easily peels off, first, the atmosphere communication port is opened to make the internal pressure of the ink cartridge main body equal to the external pressure, and then It is possible to open the ink supply port, and as a result, it is possible to prevent the occurrence of ink leakage due to the difference between the internal pressure and the external pressure in the ink cartridge body.

Further, when the seal member is peeled off, the ink cartridge main body is rotated so that
It is also possible to prevent the ink from scattering due to the inertia of the ink itself.

[Brief description of the drawings]

FIG. 1A is a plan view for explaining a first embodiment of an ink cartridge of the present invention, and FIG. 1B is the same drawing as FIG.
Is a cross-sectional view taken along line XX of FIG.
It is sectional drawing which follows a line.

FIG. 2 is an explanatory diagram of a procedure for peeling off a seal member in a conventional ink cartridge.

FIG. 3 is an explanatory diagram of a step of attaching the seal member in the first embodiment of the ink cartridge of the present invention.

FIG. 4 is an explanatory view of a procedure for peeling off a seal member in the ink cartridge of FIG.

5A is a plan view for explaining a second embodiment of the ink cartridge of the present invention, and FIG. 5B is the same drawing as FIG.
FIG. 3 is a cross-sectional view taken along line YY of FIG.

6A and 6B are explanatory views of a process of attaching a seal member in the ink cartridge of FIG.

FIG. 7 is a cross-sectional view for explaining a configuration example of an ink cartridge main body in the ink cartridge of the present invention.

FIG. 8 is a perspective view of an ink jet recording apparatus to which the ink cartridge of the present invention can be attached.

[Explanation of symbols]

 1 Ink Cartridge Main Body 2 Ink Supply Port 3 Atmosphere Communication Port 4 Sealing Member 5 Package A First Sealing Part B Second Sealing Part C Operation Part D Welding Part

Front page continued (72) Inventor Yoichi Tanetani 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Kazuaki Masuda 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. Within

Claims (15)

[Claims] 1. An ink cartridge body containing ink therein and having an ink supply port and an atmosphere communication port formed therein, and a surface releasably adhered to the surface of the ink cartridge and sealing the ink supply port. In an ink cartridge having one sealing portion and a sealing member having a second sealing portion for sealing the atmosphere communication port, the sealing member is operated by applying a peeling force for peeling the sealing member. And a contact portion that releasably adheres to a plurality of surfaces of the ink cartridge body that form different angles with respect to the direction of the peeling force applied to the operation portion, and the first sealing portion is The ink cartridge is characterized in that the ink cartridge is located closer to a contact portion with the surface of the ink cartridge body, which is at an angle less likely to peel off than the second sealing portion. 2. The first sealing portion of the seal member is located closer to the contact portion with the surface of the ink cartridge body, which is smaller than the second sealing portion with respect to the direction of the peeling force. The ink cartridge according to claim 1, wherein: 3. The first sealing portion is located at a contact portion with the surface of the ink cartridge body, which is substantially parallel to the direction of the peeling force, and the second sealing portion has the peeling force. The ink cartridge according to claim 1 or 2, wherein the ink cartridge is located in a contact portion with a surface of the ink cartridge body that is substantially orthogonal to the direction. 4. The ink supply port is formed on a surface of the ink cartridge body that is substantially orthogonal to the direction of the peeling force, and the atmosphere communication port is substantially parallel to the direction of the peeling force. The ink cartridge according to claim 1, wherein the ink cartridge is formed on a surface of the ink cartridge body. 5. The ink supply port and the atmosphere communication port are
The ink cartridge body is formed on the surface of the ink cartridge body that is substantially orthogonal to the direction of the peeling force, and is formed in the vicinity of the second sealing portion of the seal member and is substantially parallel to the direction of the peeling force. The ink cartridge according to any one of claims 1 to 3, wherein a close contact portion that is in close contact with the surface is located. 6. The close contact portion of the seal member is formed on each of the peripheral edge of the opening of the ink supply port and the peripheral edge of the opening of the atmosphere communication port.
The ink cartridge according to any one of 1. 7. The operating portion of the sealing member is formed at a position closer to the second sealing portion than to the first sealing portion, according to any one of claims 1 to 6. Ink cartridge. 8. The operating portion of the sealing member is formed so as to project at a position closer to the second sealing portion than the first sealing portion. The ink cartridge described in. 9. The ink cartridge body has a grip portion that is gripped when a peeling force is applied to the operation portion of the seal member, and the grip portion of the ink cartridge body and the operation portion of the sheet member include: 9. The rotation of the ink cartridge main body about the center of the contact portion near the first sealing portion is allowed after the atmosphere communication port is opened by the peeling force. The ink cartridge according to any one. 10. The ink cartridge according to claim 1, further comprising a package that wraps the ink cartridge main body in which the ink supply port and the atmosphere communication port are sealed by the seal member. 11. The ink cartridge according to claim 10, wherein the operating portion of the seal member is connected to the package. 12. The ink cartridge according to claim 10, wherein the operating portion of the seal member is coupled to a portion of the package that protrudes outward. 13. The package is separable into an ink splash prevention part surrounding the ink supply port and the atmosphere communication port and another part, and an operation part of the seal member prevents ink splash of the package. 3. The structure according to claim 1, which is connected to the part.
13. The ink cartridge according to any one of 0 to 12. 14. The package according to claim 10, wherein inside of the package, opening of the ink supply port and the atmosphere communication port by peeling off the seal member is allowed. ink cartridge. 15. The ink cartridge according to claim 10, wherein the package has a portion surrounding the seal member separated from the ink cartridge main body.