JP4710583B2 - ink cartridge - Google Patents

Description

The present invention relates to an ink cartridge, a sensor unit, and an ink cartridge substrate.

There is a recording apparatus such as a printer that ejects ink onto a medium such as paper to record characters and graphics. In the case of a recording apparatus that uses ink, ink stored in an ink cartridge that is detachable from the recording apparatus is often used. Such an ink cartridge is replaced with an ink cartridge filled with ink when the stored ink is used up or the remaining amount is low.

Since the amount of ink in the ink cartridge decreases with the recording operation of the recording apparatus, there is a desire to check the amount of ink used or the remaining amount of ink. For this reason, a technique has been developed in which data on the amount of ink used or the amount of ink remaining is written in a memory installed in the ink cartridge and electrically read out as required (see, for example, Patent Document 1). Such a memory is fixed to the circuit board, and the circuit board is directly fixed to the cartridge body.

JP 2002-337358 A (paragraph 0029, FIG. 3, etc.)

The ink usage amount or ink remaining amount data is written after being calculated from the number of ink ejections by the recording apparatus. Therefore, the error in the data value tends to increase when the remaining amount of ink in the ink cartridge decreases.

Therefore, it is conceivable to mount a sensor on the ink cartridge that directly detects the remaining amount of ink in the ink cartridge and outputs an electric signal corresponding to the detected amount.

When a sensor is mounted on an ink cartridge, an electric signal output from the sensor needs to be supplied to the recording apparatus, and the ink cartridge needs to be detachable from the recording apparatus. For this reason, it is necessary to provide the ink cartridge with a contact terminal that comes into contact with the terminal on the recording apparatus side when the ink cartridge is mounted on the recording apparatus, and to electrically connect the contact terminal and the sensor.

However, it is difficult to electrically connect the contact terminal on the ink cartridge side provided for an electrical signal from the sensor and the sensor with a simple configuration while enabling contact with the recording apparatus.

In addition, when this sensor applies a mechanical deformation action like a piezo element,
The sensor terminal may be erroneously detected due to an external load when the ink cartridge is attached or during the recording operation of the recording apparatus, so it is not preferable to use the sensor terminal as a contact terminal in contact with the recording apparatus. .

The present invention has been made in view of the above-described problems, and allows the contact between the contact terminal on the ink cartridge side provided for the sensor and the sensor with a simple configuration while enabling contact with the terminal on the recording apparatus side. An object is to obtain an ink cartridge, a sensor unit, and an ink cartridge substrate that can be electrically connected to each other.

  In order to solve the above problems, the present invention is configured as follows.

  An ink cartridge according to the present invention is detachably installed in a recording apparatus, accommodates ink, and has a cartridge main body formed with a sensor accommodating recess, and is disposed in the sensor accommodating recess, and an electric signal corresponding to the amount of the ink A sensor element that outputs, an electrode terminal disposed on one surface of the sensor element, a cover member fixed to an opening end of the sensor receiving recess, and a substrate fixed to the cover member, One surface of the substrate is in contact with the electrode terminal, and an input terminal for inputting an electric signal from the sensor is formed, and the other surface of the substrate receives contact from the terminal of the recording apparatus, An output terminal for outputting an electric signal from the sensor element is formed, the input terminal and the output terminal are electrically connected by a through hole of the substrate, and the electrode terminal is in contact with the input terminal. It makes between said output terminal said sensor element is electrically connected to.

As a result, the sensor output terminal of the sensor is in direct contact with the input terminal of the substrate having the output terminal, so that the ink cartridge side contact terminal provided for the sensor with a simple configuration (that is, the output terminal of the substrate) ) And the sensor can be electrically connected. Further, since the input terminal is provided on a different surface from the output terminal, the area of the input terminal that receives the contact of the sensor can be increased, and the assembly error between the sensor and the board is easily allowed.

The ink cartridge according to the present invention may be as follows in addition to any of the ink cartridges described above. In other words, in this case, the input terminal of the substrate is disposed at a position where at least a part of the input terminal overlaps with the output terminal when viewed from the vertical direction of one surface and the other surface.

  As a result, the wiring between the input terminal and the output terminal can be shortened.

The ink cartridge according to the present invention may be as follows in addition to any of the ink cartridges described above. That is, in that case, the input terminal of the substrate has a larger area than the output terminal.

Thereby, even if the contact part of a sensor and a board | substrate shifts | deviates somewhat, a contact can be ensured favorable and the assembly | attachment error of a sensor and a board | substrate becomes easy to be accept | permitted.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view illustrating an example of a printer. In FIG. 1, a printer 1 is a recording apparatus that records characters, figures, and the like by ejecting ink onto a medium P such as paper.

In the printer 1, the carriage 11 is arranged so as to be movable along the axis 12 in a direction perpendicular to the feeding direction of the medium P. The carriage 11 is connected to the motor 1 via a belt 13.
4 is driven.

In addition, the carriage 11 is installed so that the ink cartridge 21 can be attached and detached, and has a head (not shown) that discharges ink supplied from the ink cartridge 21 at a position facing the medium P.

FIG. 2 is a perspective view showing the ink cartridge 21 according to the embodiment of the present invention. FIG.
These are exploded perspective views showing the ink cartridge 21 according to the embodiment of the present invention.

The ink cartridge 21 includes a cartridge main body 31, a sensor 35 that detects ink out of the cartridge main body 31, a cover member 33 to which the substrate 32 is fixed, and the side cover 3.
4.

A sensor housing recess 31c is formed on the front surface of the cartridge body 31, and the sensor 35 is disposed in the sensor housing recess 31c. In the sensor receiving recess 31 c, the sensor 35 is placed on the bottom wall and is pressed against the wall by the restoring force of the spring 36. And the cover member 33 to which the board | substrate 32 was fixed is fixed to the opening end of the sensor accommodating recessed part 31c,
The sensor 35 is covered. Further, a side cover 34 that covers a part of the side surface and the bottom surface is attached to the cartridge body 31 with a latching structure (so-called patched structure).

  Here, the structure of each member will be described.

  First, the cartridge body 31 will be described.

As shown in FIG. 3, the cartridge main body 31 has a substantially rectangular parallelepiped shape. A lever 31a used for attaching and detaching the ink cartridge 21 is formed on the front surface, and an ink outlet 31b is formed on the bottom surface. And a backflow prevention valve. Cartridge body 31
Are integrally molded with resin, the opposite side surfaces are sealed with a film, and the ink containing portion is filled with ink.

In addition, a sensor housing recess 31 c is formed at a location near the bottom surface of the front surface of the cartridge body 31. On the front surface of the cartridge body 31, the shafts 31d, 3 are directly above the sensor receiving recess 31c.
1e is formed, and a shaft portion 31f and a convex portion 31 having a crest shape are formed directly below the sensor housing recess portion 31c.
g is formed. The shafts 31d, 31e, 31f and the convex portion 31g are used for fixing the cover member 33.

The sensor receiving recess 31c is a substantially rectangular parallelepiped space, and an engaging recess 31h is formed on both sides of the side wall of the sensor, and a protrusion 31i is formed on the inner wall of the upper surface along the depth direction of the sensor receiving recess 31c. Is formed on the inner wall of the inner surface, and a cylindrical recess 33 whose axial direction is the height direction.
j is formed. In addition, an ink flow path (not shown) is formed on the inner wall of the bottom surface of the sensor receiving recess 31c. When the cover member 33 is fixed, the engaging recess 31h has a claw 33a of the cover member 33.
The tip of is fitted. Further, the convex portion 31 i and the concave portion 33 j are used for fixing the spring 36.

Next, the cover member 33 will be described. FIG. 4 is a perspective view showing the substrate 32 and the cover member 33 in FIG.

As shown in FIGS. 3 and 4, the cover member 33 is integrally formed of resin and has a shape in which two claws 33 a protrude substantially vertically from the back surface of the substantially rectangular flat plate portion. Holes 33b and 33c are formed in the upper end portion of the cover member 33 so as to penetrate between the front (front) surface and the rear surface, and a protrusion 33d that engages with the jaw portion 34a of the side cover 34 is formed at the lower end. It is formed. Holes 33b and 33c
Is used to fix the cover member 33 to the cartridge body 31.

On the front surface of the cover member 33, a recess 33e is formed in which the protrusion on the back surface of the substrate 32 (the protrusion 32g in FIG. 5) is accommodated. Further, on the surface of the cover member 33, a convex portion 33f is formed near the upper end, and a convex portion 33g is formed near the lower end. The convex portions 33f and 33g are formed by the cover member 33.
Used for fixing the substrate 32 to the substrate.

Further, an insertion hole 33h penetrating between the front surface and the back surface of the cover member 33 is formed. 2
A recess is formed at the opening end of the back surface of each of the insertion holes 33h, and the end of the sensor 35 is disposed during assembly.

In addition, a hole 33i and a recess 33j are formed at the lower end of the back surface of the cover member 33, and a semi-cylindrical recess 33k whose axial direction is the height direction is formed between the two claws 33a. Hole 3
3i and the recess 33j are used for fixing the cover member 33 to the cartridge body 31. The recess 33k is used for guidance when the spring 36 is fixed.

Further, a total of four convex portions 33m are formed on the side surface of the cover member 33 at two locations on one side. Therefore, when the ink cartridge 21 is mounted on the carriage 11, the convex portion 33 is used.
m comes into contact with the carriage 11, and the positioning accuracy of the terminals (terminals 32c and 32d in FIG. 5) of the substrate 32 fixed to the cover member 33 with respect to the terminals on the carriage 11 side is improved. Furthermore, since the convex portion 33m is integrally formed on the cover member 33 smaller than the cartridge main body 31, deterioration in positioning accuracy due to sink marks can be reduced.

Next, the substrate 32 will be described. FIG. 5 is a diagram showing the substrate 32 in FIG. FIG. 5A is a front view showing a front surface of the substrate 32. FIG. 5B is a rear view showing the back surface of the substrate 32. FIG. 5C is a side view of the substrate 32.

The substrate body 32M is a hard substrate such as glass epoxy having wiring patterns formed on both sides. A notch 32a is formed at the upper end of the substrate body 32M, and a hole 32b is formed at the lower end. The notches 32 a and the holes 32 b are used for fixing the substrate 32 to the cover member 33.

On the front surface of the substrate body 32M, there are seven memory terminals 32c for supplying power to the memory 32f and inputting / outputting data, and two output terminals 32d for outputting electric signals from the sensor 35. It is formed. These terminals 32 c and 32 d are realized as lands on the printed circuit board, and the carriage 11 is mounted when the ink cartridge 21 is mounted on the carriage 11.
Receive contact from the terminal on the side. The memory 32f is a non-volatile semiconductor memory that can read and write ink usage or remaining amount data from the printer 1.

On the back surface of the substrate body 32M, two input terminals 32e are formed which receive contact from the electrode terminals of the sensor 35 (electrode terminals 45 in FIG. 6) and input an electrical signal from the sensor 35. This input terminal 32e is also realized as a land on the printed circuit board. The input terminal 32e is formed to have a larger area than the two output terminals 32d for outputting electrical signals from the sensor 35. The input terminal 32e faces the terminal 32d across the board body 32M, that is, the input terminal 32e is viewed from the vertical direction of the front and back surfaces of the board body 32M.
At least a portion is disposed at a position overlapping the output terminal 32d. Two input terminals 32
The center point between the positions e is shifted from the center in the width direction of the substrate body 32M by the thickness of the side cover 34.

On the back surface of the substrate body 32M, the memory 32f is connected and fixed to the wiring pattern, and then sealed by molding, thereby forming a protruding portion 32g. The memory 32f on the back surface of the substrate body 32M and the memory terminal 32c on the front surface are electrically connected by a wiring pattern (not shown) on the front surface and the back surface of the substrate body 32M and a through hole (not shown) between the front surface and the back surface of the substrate body 32M. Connected to. Similarly, the input terminal 32e on the back surface of the substrate body 32M and the output terminal 32d on the front surface are electrically connected by a similar wiring pattern and through-hole.

Next, the sensor 35 will be described. FIG. 6 is an exploded perspective view showing the sensor 35 in FIG. FIG. 6A is an exploded perspective view when the sensor 35 is viewed from the upper surface side, and FIG.
B) is an exploded perspective view when the sensor 35 is viewed from the bottom surface side.

As shown in FIG. 6, the sensor 35 includes a sensor element 41, a plate 42, a resin lower housing 43, a seal 44, two metal electrode terminals 45, and a resin upper housing 46.

The sensor element 41 is an element that detects the presence or absence of ink in the ink flow path in the sensor 35. Further, in this embodiment, the sensor element 41 is a sensor using a piezo element and applying a dynamic action. The sensor element 41 generates vibration for a certain period by supplying power, and responds to vibration detected thereafter. The electrical signal is output as an electrical signal indicating the presence or absence of ink. That is, the waveform of the electric signal output from the sensor element 41 changes depending on the presence or absence of ink in the ink flow path. Note that the drive voltage of the sensor element 41 is higher than the power supply voltage applied to the memory 32 f of the substrate 32.

Two electrodes 41 a are formed on the upper surface of the sensor element 41, and two ink flow path ports 41 b are formed on the lower surface. The ink flow path port 41b is for making the inside of the sensor element 41 an ink flow path.

The sensor element 41 is bonded and fixed to a metal plate 42, and the plate 42 to which the sensor element 41 is fixed is disposed in the recess 43 a of the lower housing 43.

Thereby, the ink flow path opening 41b of the sensor element 41 and the ink flow path hole 42 of the plate 42 are provided.
a and the ink flow path hole 43b of the lower housing 43 are continuous, the internal space of the sensor element 41 and the ink flow path port 41b, the ink flow path hole 42a of the plate 42, and the ink flow path hole 43b of the lower housing 43, An ink flow path in the sensor 35 is formed.

Two electrode terminals 45 are disposed on the upper surface of the sensor element 41. The electrode terminal 45 is
The sensor element 41 is positioned by inserting the column 43c of the lower housing 43 into the hole 45b.
In contact with the electrode 41a. Each electrode terminal 45 has a shape in which both ends of a metal flat plate are bent, and the bent portions 45 a at both ends are exposed to the outside of the sensor 35. Further, the bent portion 45a is formed so that the inside thereof is hollowed out and the bent portion is rich in elasticity. Since the bent portion has elasticity in the bending direction, a good contact pressure is generated when the electrode terminal 45 comes into contact with the substrate 32, and the influence of the load applied to the electrode terminal 45 is influenced by the inside of the sensor 35 (particularly the sensor element 41).
).

An upper housing 46 is disposed on the two electrode terminals 45. The upper housing 46 is positioned by inserting the column 43c of the lower housing 43 into the hole 46a. Further, after the support 43c of the lower housing 43 is inserted into the hole 46a of the upper housing 46, the upper end of the support 43c of the lower housing 43 is melted by heat, and the upper housing 46 is lowered by heat caulking. It is fixed to the body 43. Thereby, the electrode terminal 45, the sensor element 41, and the plate 42 are also fixed inside the sensor 35.

Further, a seal 44 having elasticity compared to the lower housing 43 and the upper housing 46 is fitted into the bottom recess 43 d of the lower housing 43. A pedestal 46 b that receives the spring 36 is formed on the upper surface of the upper housing 46.

Next, the assembly of the above-described members to the cartridge body 31 and the structure after the assembly will be described. FIG. 7 is a cross-sectional view parallel to the side surface of the ink cartridge 21 shown in FIG. FIG. 8 is a cross-sectional view of the ink cartridge 21 shown in FIG. FIG. 9 is a block diagram showing an ink flow path of the ink cartridge 21 shown in FIG.

First, the sensor 35 is disposed in the sensor housing recess 31 c of the cartridge body 31. At that time, the bottom surface (seal 44) of the sensor 35 contacts the lower side of the sensor receiving recess 31c, that is, the inner wall on the ink outlet 31b side.

Next, the base 46b of the sensor 35 and the cartridge main body 31 in a state where the spring 36 is contracted.
It is arrange | positioned between the convex parts 31i of this, and is released. Thereby, the sensor 3 is restored by the restoring force of the spring 36.
5 is pressed against the inner wall of the sensor receiving recess 31 c, the seal 44 of the sensor 35 is elastically deformed, and the sensor 35 comes into close contact with the cartridge body 31. As a result, in the vibration direction (amplitude direction) of the sensor element 41, that is, in the height direction, the sensor 35 is
The cartridge 36 is elastically fixed to the cartridge body 31 by the elastic members of the spring 36 and the seal 44 without being rigidly fixed thereto.

Further, as shown in FIG. 8, the ink flow path of the cartridge body 31 and the ink flow path of the sensor 35 (broken line in FIG. 8) are continuous. As shown in FIG. 9, the sensor 35 is disposed on the ink flow path between the ink containing portion 61 and the backflow prevention valve 62 in the cartridge main body 31. Therefore, if there is ink in the ink container 61, there is also ink in the ink flow path between the ink container 61 and the backflow prevention valve 62, and when there is no ink in the ink container 61, the ink container Since the ink in the ink flow path between 61 and the backflow prevention valve 62 is also lost, the sensor 3
5 makes it possible to detect the presence or absence of ink in the ink cartridge 21, that is, the amount of ink.

On the other hand, the substrate 32 is fixed to the cover member 33. At that time, the convex portion 33 f of the cover member 33.
Is disposed in the notch 32 a of the substrate 32, and the convex portion 33 g of the cover member 33 is formed in the hole 32 b of the substrate 32.
Then, the tip of the convex portion 33f is melted and the substrate 32 is attached to the cover member 33 by heat caulking.
Is fixed. After fixing, the input terminal 32e on the back surface of the substrate body 32M is disposed at a position facing the insertion hole 33h of the cover member 33.

The cover member 33 is fixed to the cartridge body 31. At that time, first, the claw 33 a of the cover member 33 is latched to the engaging recess 31 h of the cartridge body 31. Also,
The shaft 31d of the cartridge body 31 is inserted into the hole 33b of the cover member 33, the shaft 31e is inserted into the hole 33c, the shaft 31f is inserted into the hole 33i, and the convex portion 31g is disposed in the concave portion 33j. While the member 33 is pressed against the cartridge body 31, the shaft 31d is melted and the cover member 33 is fixed to the cartridge body 31 by heat caulking. The heat caulking is performed only on the shaft 31d on the lever 31a side when viewed from the substrate 32, and is not performed on the opposite side, that is, the shaft or the convex portion on the bottom surface side of the cartridge main body 31 when viewed from the substrate 32.

At that time, as shown in FIG. 7, one end surface of the sensor 35 is in contact with the inner surface of the sensor receiving recess 31c of the cartridge body 31, and the bent portion 45a of the electrode terminal 45 protrudes from the surface facing the surface. However, it comes into contact with the input terminal 32e on the back surface of the substrate body 32M through the insertion hole 33h of the cover member 33. As a result, the sensor element 41 of the sensor 35 and the output terminal 32 of the substrate 32.
An electrical continuity is established with d.

Since the spring 36 is guided by a cylindrical space formed by combining the semi-cylindrical concave portions 31j and 33k, the convex portion 31i is formed in the sensor receiving concave portion 31c of the cartridge body 31.
And the base 46b will not fall out. Further, on the front surface of the cartridge main body 31, there is a step between the bases of the shafts 31d and 31e and the base of the lever 31a. When the cover member 33 is attached to the cartridge main body 31, as shown in FIG. Member 3
3. The front end surface on the front side and the surface of the cartridge main body 31 with the base of the lever 31a are arranged on substantially the same plane.

In this way, the substrate 32, the cover member 33, the sensor 35, and the spring 36 are assembled to the cartridge body 31. Further, the side cover 34 is attached to the cartridge body 31, so that the movement of the projection 33 d of the cover member 33 is restricted by the jaw portion 34 a of the side cover 34.

As described above, according to the above-described embodiment, the sensor 35, the cover member 33, and the substrate 32 are provided in the ink cartridge 21. The sensor 35 outputs an electrical signal corresponding to the amount of ink. The cover member 33 is fixed to the cartridge body 31 and covers at least a part of the sensor 35. The substrate 32 is fixed to the cover member 33 and receives an electrical contact from the electrode terminal 45. The input terminal 32e to which an electrical signal from the sensor 35 is input is output to one surface (back surface) of the electrical signal from the sensor 35. The output terminal 32d is provided on the other surface (front surface).

Accordingly, since the electrode terminal 45 of the sensor 35 is in direct contact with the input terminal 32e of the substrate 32 having the output terminal 32d, the ink cartridge side provided for outputting an electrical signal from the sensor 35 with a simple configuration. The contact terminal (that is, the output terminal 32d of the substrate 32) and the sensor 35 can be electrically connected.

Further, according to the above embodiment, the input terminal 32e of the substrate 32 is electrically connected to the output terminal 32d through a through hole between the back surface and the front surface of the substrate body 32M.

Thereby, since the input terminal 32e and the output terminal 32d are electrically connected through the board body 32M, the input terminal 32e and the output terminal 32d are electrically connected without increasing the number of components. Can do.

Further, according to the above embodiment, each input terminal 32e of the substrate 32 is disposed at a position where at least a part thereof overlaps with the corresponding output terminal 32d when viewed from the vertical direction of the back surface and the front surface of the substrate body 32M. .

Thereby, the wiring between the input terminal 32e on the back surface and the output terminal 32d on the front surface can be shortened.

Further, according to the embodiment, each input terminal 32e on the back surface of the substrate 32 is connected to each output terminal 3.
Having an area greater than 2d.

Thereby, even if the contact part of the sensor 35 and the board | substrate 32 slip | deviates somewhat, a contact can be ensured favorable,
Compared to the positioning error between the ink cartridge 21 and the printer 1, the sensor 35 and the substrate 3
The assembly error of 2 is likely to be allowed.

The above-described embodiments are preferred examples of the present invention, but the present invention is not limited to these, and various modifications and changes can be made without departing from the scope of the present invention. is there.

For example, in the above embodiment, the member may be fixed with an adhesive instead of fixing with heat caulking.

In the above-described embodiment, the substrate 32, the cover member 33, and the sensor 35 are separated from the cartridge body 31. Similarly, the substrate 32 and the sensor 3
5 may be a sensor unit. When the cover member 33 is not used,
The substrate 32 may be directly fixed to the cartridge body.

Further, in the above embodiment, another type of sensor may be used instead of the sensor 35, or a sensor that detects the remaining amount or amount of use with a continuous value instead of detecting the presence or absence of ink is used. May be. Even when an electronic element other than the sensor 35 is mounted on the ink cartridge, the substrate 32 can be used by using the same configuration for the other members.

In the above embodiment, the printer 1 on which the ink cartridge 21 is mounted is
The present invention is not limited to that shown in FIG. 1. For example, the ink cartridge 21 is not mounted on the carriage but mounted at another location in the printer housing, and the ink cartridge 21 is connected to the ink ejection head of the carriage via a tube or the like. A printer that supplies ink may also be used.

  The present invention is applicable to, for example, an ink cartridge of a printer.

It is a perspective view which shows an example of a printer. 1 is a perspective view showing an ink cartridge according to an embodiment of the present invention. FIG. 3 is an exploded perspective view showing the ink cartridge according to the embodiment of the invention. It is a perspective view which shows the board | substrate and cover member in FIG. It is a figure which shows the board | substrate in FIG. It is a disassembled perspective view which shows the sensor in FIG. FIG. 3 is a cross-sectional view parallel to the side surface at AA of the ink cartridge shown in FIG. 2. FIG. 3 is a cross-sectional view of the ink cartridge shown in FIG. 2 parallel to the front surface at AA. FIG. 3 is a block diagram illustrating an ink flow path of the ink cartridge illustrated in FIG. 2.

Explanation of symbols

21 ink cartridge, 31 cartridge body, 32 substrate (substrate, substrate for ink cartridge), 32c memory terminal, 32d output terminal, 32e input terminal, 32
f Memory, 32M board body, 33 cover member, 35 sensor (sensor, electronic element)

Claims (3)

A cartridge main body that is detachably installed in the recording apparatus, accommodates ink, and has a sensor accommodating recess;
A sensor element that is disposed in the sensor housing recess and outputs an electrical signal corresponding to the amount of the ink;
An electrode terminal disposed on one surface of the sensor element;
A cover member fixed to the opening end of the sensor receiving recess;
A substrate fixed to the cover member,
One surface of the substrate is in contact with the electrode terminal, and an input terminal to which an electric signal from the sensor is input is formed,
On the other surface of the substrate, an output terminal is formed which receives contact from the terminal of the recording device and outputs an electrical signal from the sensor element,
The input terminal and the output terminal are electrically connected by a through hole of the substrate,
An ink cartridge in which the sensor element and the output terminal are electrically connected when the electrode terminal is in contact with the input terminal.   2. The ink cartridge according to claim 1, wherein the input terminal is disposed at a position where at least a part of the input terminal overlaps the output terminal when viewed from the vertical direction of the one surface and the other surface. The ink cartridge according to claim 1, wherein the input terminal has a larger area than the output terminal.

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