JP2018140503A - Liquid storage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid storage container in which a liquid storage body having a liquid supply port stably fittable to a liquid supply needle of a printer is stored.SOLUTION: An ink cartridge 30 in which an ink pack 40 having a liquid supply member 450 fittable to a liquid supply needle 210 of a printer 10 is stored includes a first housing part 311, a second housing part 315, a base member 330 and an energizing member 390, where in a closed case state in which the ink pack 40 is stored therein and the second housing part 315 is closed to the first housing part 311, the base member 330 and the energizing member 390 are opposite to each other so as to sandwich the liquid supply member 450 in a Z-axis direction, the liquid supply member 450 is displaceable to the Z-axis direction, and a displacement amount in the Z-axis direction is restricted in such a range that the liquid supply needle 210 and the liquid supply member 450 can be fitted to each other by the base member 330 and the energizing member 390.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a liquid container.

2. Description of the Related Art Conventionally, a liquid container that supplies liquid to a printing apparatus by arranging an ink pack inside an ink cartridge and mounting the ink pack on the printing apparatus is known (for example, Patent Document 1).
The liquid storage container (ink cartridge) described in Patent Document 1 has a liquid storage body (ink pack) in which a liquid supply member is provided, and fits the liquid supply member and the liquid supply pipe of the printing apparatus. Thus, the liquid is supplied from the liquid storage container toward the printing apparatus. Further, the liquid container restricts the movement of the liquid supply member in the −Z-axis direction (the height direction of the printing apparatus) when the three space axes orthogonal to each other are the X-axis, the Y-axis, and the Z-axis. It has a restricting portion, prevents the displacement of the liquid supply member in the −Z-axis direction, and reduces the labor of assembling the liquid container to the liquid container.

JP2015-58703A

  However, in the liquid storage container described in Patent Document 1, since the displacement of the liquid supply member is prevented by the restricting portion, the relative position between the liquid supply member and the liquid supply pipe of the printing apparatus has changed due to, for example, aging. In this case, it is difficult to adjust the relative position for properly fitting the liquid supply member and the liquid supply pipe of the printing apparatus, and it may be difficult to stably supply the liquid to the printing apparatus.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A liquid storage container according to this application example is a liquid storage container that stores a liquid storage body having a liquid supply port that can be fitted to a liquid supply needle of a printing apparatus. An upper case that can be opened and closed with respect to the lower case, a base member provided on the lower case, and an urging member disposed between the lower case and the upper case. In the closed case state in which the liquid container is housed and the upper case is closed with respect to the lower case, the base member and the urging member are configured so that the lower case and the upper case face each other. The liquid supply ports are opposed to each other in one direction, the liquid supply port is displaceable in the first direction, and the displacement amount in the first direction is determined by the base member and the biasing member. By the liquid supply needle and the liquid supply port There characterized in that it is restricted to the fitting range.

In the liquid container according to this application example, the liquid supply port can be displaced in the first direction. For example, even if the relative position between the liquid supply needle and the liquid supply port changes due to aging, the liquid supply port The position of the liquid supply port can be adjusted so that the supply needle and the liquid supply port can be fitted. Furthermore, since the displacement amount of the liquid supply port in the first direction is restricted to a range in which the liquid supply needle and the liquid supply port can be fitted by the base member and the biasing member, excessive displacement of the liquid supply port is prevented. It is suppressed. For example, it is possible to suppress a problem that the liquid supply port is bent and it is difficult to supply the liquid via the liquid supply port.
Therefore, the liquid supply needle and the liquid supply port can be stably fitted, and the liquid stored in the liquid storage container can be stably supplied to the printing apparatus.

  Application Example 2 The liquid container according to the application example is provided in the liquid container, protrudes toward the base member in the closed case state, and the urging member and the biasing member in the first direction. A mounting holder formed with a boss portion positioned between the member and the base member, the first boss hole into which the boss portion is fitted, and the first boss hole; It is arranged on the mounting holder side in the closed case state, has a larger diameter than the first boss hole, and the first boss hole is located inside in a plan view as viewed from the first direction. It is preferable that the 2nd boss hole arrange | positioned and the internal peripheral surface which is an inclined surface which connects the said 1st boss hole and the said 2nd boss hole are provided.

Since the second boss hole has a larger diameter than the first boss hole, the second boss hole has a smaller diameter than that of the first boss hole. It becomes easy to arrange the tip of the boss part inside the second boss hole. Furthermore, when the tip of the boss portion of the mounting holder is disposed inside the second boss hole and the mounting holder is pushed into the base member, the boss portion is guided to the first boss hole by the inner peripheral surface. Therefore, it becomes easy to fit the boss portion into the first boss hole (easy to fit).
Therefore, it becomes easy to fit the boss portion into the first boss hole and position and fix the mounting holder to the base member.

  Application Example 3 In the liquid container according to the application example described above, the mounting holder includes a substrate holder that holds a substrate that can be electrically connected to the printing apparatus, or an identifier that can identify liquid information. It is preferable that it is an identification body holder.

  Since the substrate holder is positioned and fixed with respect to the base member, the substrate held by the substrate holder can be stably electrically connected to the printing apparatus. Furthermore, since the identification body holder is positioned and fixed with respect to the base member, an identification body capable of identifying liquid information can be arranged at a predetermined position of the printing apparatus.

  Application Example 4 In the liquid container according to the application example described above, the urging member is attached to the inner side of the upper case, and in the closed case state, presses the attachment holder with the base member. Preferably, the mounting holder is positioned and fixed with respect to the base member.

  In the closed case state where the upper case is closed with respect to the lower case, the biasing member presses the mounting holder with the base member and positions and fixes the mounting holder with respect to the base member. Misalignment can be prevented.

  Application Example 5 In the liquid container according to the application example described above, the base member has a first positioning member, and the first boss hole, the second boss hole, and the inner peripheral surface are The first positioning member is preferably formed.

  When the first boss hole, the second boss hole, and the inner peripheral surface are formed in the main body portion of the base member and a separate member (first positioning member), the first boss hole, the second boss hole, and the inner periphery The shape of the main body part of the base member can be simplified as compared with the case where the surface is integrally formed with the main body part of the base member. Furthermore, since the influence of the 1st positioning member with respect to the main-body part of a base member can be made small, the freedom degree of design of the main-body part of a base member can be raised.

  Application Example 6 In the liquid container according to the application example described above, in the closed case state, the base member has a displacement amount in the first direction of the liquid supply port together with the urging member as the liquid supply needle. A second positioning member that regulates a range in which the liquid supply port can be fitted; and the second positioning member is disposed between a base end and a distal end of the liquid supply port in the closed case state. It is preferable that the partition wall has a side surface positioned on the distal end side and an inclined surface that is continuous with the side surface and is inclined toward the base end side in the first direction.

  When the partition wall has a side surface located on the distal end side and an inclined surface that is continuous with the side surface and is inclined toward the proximal end side in the first direction, the distance between the distal end of the liquid supply port and the partition wall is an inclined surface from the side surface. Widen in the direction toward. Then, in the second positioning member, the base end side of the liquid supply port can be easily received in the direction from the inclined surface toward the side surface. That is, it becomes easy to attach the liquid supply port to the second positioning member.

FIG. The perspective view which shows the cartridge holder of a printing apparatus. FIG. 3 is a schematic cross-sectional view illustrating a state where an ink cartridge is mounted on a cartridge holder. FIG. 2 is a schematic diagram of an ink cartridge in an open case state. FIG. 3 is a schematic diagram of an ink cartridge in which a first housing part and a second housing part are in a half-open state. Schematic of the ink cartridge in a closed case state. The exploded perspective view of an ink pack. The exploded perspective view of a substrate holder. The disassembled perspective view of an identification body holder. FIG. 3 is an exploded perspective view of a base member that positions and fixes the ink pack. The expanded sectional view of the area | region A enclosed with the broken line of FIG. Sectional drawing of the positioning member along the BB line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each layer and each member is made different from the actual scale so that each layer and each member can be recognized.

(Embodiment)
FIG. 1 is a perspective view of the printing apparatus.
FIG. 1 shows the XYZ axes. That is, FIG. 1 shows the X axis, the Y axis, and the Z axis as three space axes orthogonal to each other. Among the X-axis directions along the X-axis, the + X-axis direction is a positive direction, and the −X-axis direction is a negative direction. Of the Y-axis directions along the Y-axis, the + Y-axis direction is a positive direction, and the −Y-axis direction is a negative direction. Among the Z-axis directions along the Z-axis, the + Z-axis direction is a positive direction, and the −Z-axis direction is a negative direction. That is, the arrow side of the arrow indicating the axial direction is the + direction (positive direction), and the base end side is the − direction (negative direction). The XY plane is a horizontal plane, and the −Z axis direction is the direction of gravity.
Furthermore, the XYZ axes in FIG. 1 correspond to the XYZ axes in the other drawings. In the following description, the three spatial axes in the ink cartridge 30 and the constituent members are XYZ axes with respect to the ink cartridge 30 and the constituent members in the state where the ink cartridge 30 is attached to the cartridge holder 20.
The Z-axis direction is an example of a “first direction”.

  The printing apparatus 10 is an inkjet printer that ejects ink, which is an example of “liquid”. The ink used in the printing apparatus 10 is UV ink that is a liquid printing material that is cured by irradiation with ultraviolet rays. The printing apparatus 10 ejects UV ink as droplets onto a resin film (for example, a plastic bottle label film) as a printing medium, and irradiates the UV ink on the resin film with a plurality of ultraviolet rays. Are continuously printed on a resin film.

As shown in FIG. 1, the printing apparatus 10 includes a cartridge holder 20 and an ink cartridge 30 that is an example of a “liquid container”.
The cartridge holder 20 is a mounting portion for mounting the ink cartridge 30 in a detachable manner. The ink cartridge 30 is a liquid storage unit that stores UV ink that is liquid.
The user can attach the ink cartridge 30 to the cartridge holder 20 by inserting the ink cartridge 30 into the cartridge holder 20 in the insertion direction IS (−Y axis direction). Further, the user can remove the ink cartridge 30 from the cartridge holder 20 by pulling out the ink cartridge 30 attached to the cartridge holder 20 in the + Y-axis direction.

  The printing apparatus 10 includes a plurality of cartridge holders 20 that can mount a plurality of ink cartridges 30. The printing apparatus 10 includes twelve cartridge holders 20 that can mount twelve ink cartridges 30. The twelve cartridge holders 20 are arranged in six rows and two columns with the X-axis direction as the row direction and the Z-axis direction as the column direction. Note that the number of cartridge holders 20 in the printing apparatus 10 is not limited to 12, and may be less than 12 or more than 12.

  The printing apparatus 10 includes six types of UV inks corresponding to six colors (cyan (C), magenta (M), yellow (Y), black (K), blue (B), and white (W)). Two liquid storage containers are installed. Note that the types of UV inks used in the printing apparatus 10 are not limited to six types, and may be less than six types or more than six types.

FIG. 2 is a perspective view showing a cartridge holder of the printing apparatus. FIG. 3 is a schematic cross-sectional view showing a state where the ink cartridge is mounted in the cartridge holder. That is, FIG. 3 is a cross-sectional view along the direction in which the liquid supply needle 210 protrudes (Y-axis direction), and shows the mounting state of the ink cartridge 30 with respect to the cartridge holder 20.
As shown in FIG. 2, the cartridge holder 20 has a device side insertion port 203 and a device side wall 204. The ink cartridge 30 is detachably mounted on the cartridge holder 20 by being inserted in the −Y axis direction from the apparatus side insertion port 203 toward the apparatus side wall portion 204.

  The apparatus side insertion port 203 of the cartridge holder 20 is formed on the + Y axis direction side of the cartridge holder 20. The apparatus-side insertion opening 203 is an opening having a sufficient size that allows the ink cartridge 30 to be taken in and out.

  The apparatus side wall portion 204 of the cartridge holder 20 is formed on the −Y axis direction side of the cartridge holder 20. The device side wall portion 204 is a wall along the ZX plane. The device side wall portion 204 is provided with a liquid supply needle 210 and a device side terminal portion 220. The liquid supply needle 210 is located at the center of the apparatus side wall part 204 in the X-axis direction and protrudes from the apparatus side wall part 204 in the + Y axis direction. The device-side terminal unit 220 is located on the + X axis direction side from the liquid supply needle 210.

  The liquid supply needle 210 receives supply of UV ink from the ink cartridge 30 attached to the cartridge holder 20. As the ink cartridge 30 is attached to the cartridge holder 20, the liquid supply needle 210 is inserted (fitted) into the ink cartridge 30 (see FIG. 3).

  The device-side terminal unit 220 is electrically connected to the ink cartridge 30 mounted on the cartridge holder 20 by contact. The device side terminal portion 220 protrudes from the device side wall portion 204 in the + Y axis direction. As the ink cartridge 30 is attached to the cartridge holder 20, the device-side terminal unit 220 is inserted into the ink cartridge 30.

  The device side wall portion 204 is further provided with a device side identification portion 230. The device-side identification unit 230 is located on the −X axis direction side from the liquid supply needle 210. The apparatus-side identification unit 230 identifies the color of the UV ink stored in the ink cartridge 30 attached to the cartridge holder 20. The device identification unit 230 protrudes from the device side wall portion 204 in the + Y-axis direction. As the ink cartridge 30 is attached to the cartridge holder 20, the device-side identification unit 230 is inserted into the ink cartridge 30.

As shown in FIG. 3, the ink cartridge 30 includes an ink pack 40, a casing 310, a placement member 320, a base member 330, and a biasing member 390.
The ink pack 40 is an example of a “liquid container”, and is accommodated in the housing unit 310 and contains UV ink that is liquid. The ink pack 40 is positioned and fixed with respect to the base member 330. The ink pack 40 includes a liquid container 410 and a liquid supply member 450. The liquid storage portion 410 of the ink pack 40 is a member obtained by forming a flexible thin plate (film) into a bag shape. In the liquid storage unit 410, UV ink is stored. The liquid supply member 450 of the ink pack 40 is a cylindrical member, and is provided so as to protrude toward the −Y axis direction side of the liquid storage portion 410.
As the ink cartridge 30 is attached to the cartridge holder 20, the liquid supply needle 210 of the cartridge holder 20 is inserted (fitted) into the liquid supply member 450. Then, the UV ink stored in the liquid storage unit 410 is supplied to the liquid supply needle 210 via the liquid supply member 450.
The liquid supply member 450 is an example of a “liquid supply port”.

The casing unit 310 of the ink cartridge 30 is a box-shaped assembly of rigid members, forming the casing of the ink cartridge 30. The casing 310 includes a first casing 311 disposed on the −Z axis direction side and a second casing 315 disposed on the + Z axis direction side. The + X-axis direction side of the first casing unit 311 and the second casing unit 315 is connected by a hinge (not shown), and the second casing unit 315 is the first casing on the −X-axis direction side. The part 311 can be opened and closed. As described above, the ink cartridge 30 includes the first housing portion 311 and the second housing portion 315 that can be opened and closed with respect to the first housing portion 311.
The first casing 311 is an example of a “lower case”, and the second casing 315 is an example of an “upper case”. Furthermore, in the following description, a state in which the second housing portion 315 is opened with respect to the first housing portion 311 is referred to as an open case state, and a second housing is provided with respect to the first housing portion 311. A state in which the part 315 is closed is referred to as a closed case state.

The placement member 320 of the ink cartridge 30 is a member provided inside the housing unit 310. The mounting member 320 includes an inner wall 321 provided on the + Y axis direction side and an inner wall 322 provided on the −Y axis direction side. The inner wall 321 of the mounting member 320 is inclined so that the position in the Z-axis direction is higher in the + Y-axis direction, and the liquid storage portion 410 of the ink pack 40 is placed on the + Z-axis direction side of the inner wall 321. The inner wall 322 of the mounting member 320 is inclined so that the position in the Z-axis direction is higher in the −Y-axis direction, and the + Y-axis direction side of the inner wall 322 is connected to the inner wall 321. The liquid container 410 of the ink pack 40 is disposed at a position away from the inner wall 322.
The base member 330 of the ink cartridge 30 is disposed on the −Y axis direction side of the mounting member 320 inside the casing unit 310, and is attached to the first casing unit 311.
The urging member 390 is located between the first housing portion 311 and the second housing portion 315 and is disposed away from the liquid storage portion 410.
As described above, the ink cartridge 30 is a liquid storage container in which the ink pack 40 (liquid storage body) having the liquid supply member 450 that can be fitted to the liquid supply needle 210 of the printing apparatus 10 is stored.

FIG. 4 is a schematic view of the ink cartridge in an open case state. FIG. 5 is a schematic view of the ink cartridge in which the first housing portion and the second housing portion are in a half-open state. FIG. 6 is a schematic view of the ink cartridge in a closed case state.
5 and 6, a part of the first casing portion 311 (exterior member) is not shown so that the internal state of the casing portion 310 can be seen.

As shown in FIGS. 4 and 5, the urging member 390 is attached to the inside of the second housing portion 315. Specifically, the second housing portion 315 has two fixing portions 316 protruding in the −Z-axis direction, and the urging member 390 is attached to the fixing portion 316 of the second housing portion 315 with a screw 317. It has been.
The ink pack 40 includes a substrate holder 50 and an identification body holder 70 in addition to the liquid supply member 450. The identification body holder 70, the liquid supply member 450, and the substrate holder 50 are disposed along the X-axis direction. The identifier holder 70 is disposed on the −X axis direction side with respect to the liquid supply member 450, and the substrate holder 50 is disposed on the + X axis direction side with respect to the liquid supply member 450.
The substrate holder 50 and the identification body holder 70 are examples of “mounting holders”.

  As shown in FIG. 6, in a closed case state in which the ink pack 40 is housed inside, the biasing member 390 presses the substrate holder 50 between the base member 330 and the substrate holder 50 against the base member 330. Fix the positioning. As a result, displacement of the substrate holder 50 is prevented. Further, the urging member 390 presses the identification body holder 70 with the base member 330 and positions and fixes the identification body holder 70 with respect to the base member 330. As a result, displacement of the identification body holder 70 is prevented.

FIG. 7 is an exploded perspective view of the ink pack. FIG. 8 is an exploded perspective view of the substrate holder. FIG. 9 is an exploded perspective view of the identification body holder. FIG. 10 is an exploded perspective view of a base member for positioning and fixing the ink pack. 11 is an enlarged cross-sectional view of a region A surrounded by a broken line in FIG. 3, and is an enlarged cross-sectional view of the region A surrounded by a broken line in FIG. 3 along the direction in which the liquid supply needle extends. 12 is a cross-sectional view of the positioning member along the line BB in FIG.
In FIG. 10, the ink pack 40 is shown in addition to the base member 330. In FIG. 11, in order to easily understand the state of the constituent elements that characterize the present application, the liquid supply member 450 is hatched where two types of diagonal lines intersect, and the pedestal 340 and the positioning member 350 are One type of diagonal hatching is applied, and the biasing member 390 is shaded. In FIG. 12, a part of the substrate holder 50 (second protrusion 521b) is shown by a broken line.

As shown in FIG. 7, the liquid supply member 450 is disposed between the substrate holder 50 and the identification body holder 70 and protrudes from the liquid storage unit 410 in the −Y axis direction. An end on the −Y axis direction side of the liquid supply member 450 is a front end 450a, and an end on the + Y axis direction side of the liquid supply member 450 is a base end 450b.
The liquid supply member 450 is a member for supplying the UV ink stored in the liquid storage unit 410 to the liquid supply needle 210, and includes an end member 451, a sealing member 452, a fixing member 453, a cylindrical member 454, and the like. The outer cylinder member 456 is provided. That is, in the liquid supply member 450, the end member 451, the sealing member 452, the fixing member 453, the cylindrical member 454, and the outer cylinder member 456 are disposed between the distal end 450a and the proximal end 450b.
The end member 451 of the liquid supply member 450 is attached to the −Y axial direction side of the outer cylinder member 456, holds the sealing member 452 inside the outer cylinder member 456, and holds the liquid supply needle 210 of the outer cylinder member 456. Guide to the inside. The sealing member 452 of the liquid supply member 450 prevents the UV ink from leaking and accepts the insertion of the liquid supply needle 210. The fixing member 453 of the liquid supply member 450 fixes the cylindrical member 454 inside the outer cylinder member 456. The cylindrical member 454 of the liquid supply member 450 forms a flow path for flowing UV ink inside the outer cylinder member 456. The outer cylinder member 456 of the liquid supply member 450 is bonded to the portion 421 of the liquid container 410 of the ink pack 40 and holds other members in the liquid supply member 450.

As shown in FIGS. 7 and 8, the substrate holder 50 is a member that is disposed on the + X axis direction side with respect to the liquid supply member 450 and supports the substrate 60 provided in the ink pack 40. In other words, the substrate holder 50 is a unit that determines the contact position between the contact portion of the substrate 60 and the device-side terminal portion 220, and holds the substrate 60 that can be electrically connected to the device-side terminal portion 220 of the printing apparatus 10. To do. The substrate 60 stores information regarding the UV ink stored in the ink pack 40.
As the ink cartridge 30 is attached to the cartridge holder 20, the device-side terminal portion 220 of the cartridge holder 20 is electrically connected by contact with the substrate 60, and the printing device 10 stores the information stored in the substrate 60. It becomes accessible.

The substrate holder 50 includes a substrate holding portion 510, two protruding portions 521 that protrude from the substrate holding portion 510 in the −Z axis direction, and an engaging portion 530. The substrate holder 510 of the substrate holder 50 is a part that holds the substrate 60. The substrate holder 510 of the substrate holder 50 includes a protrusion 512 and a protrusion 514. The protrusion 512 of the substrate holding part 510 is inserted into a through hole 640 formed in the substrate 60, thereby positioning the −Z axis direction side of the substrate 60. The protrusions 514 of the substrate holder 510 are positioned in the + Z-axis direction side of the substrate 60 by fitting into the notches 650 formed in the substrate 60.
The protruding portion 521 is a portion protruding in the −Z-axis direction from the substrate holding portion 510 and is an example of a “boss portion”. The protrusion 521 has a first protrusion 521a and a second protrusion 521b. The first protrusion 521a is disposed on the + Z axis direction side, and the second protrusion 521b is disposed on the −Z axis direction side.
As described above, in a closed case state in which the ink pack 40 is accommodated inside, the biasing member 390 presses the substrate holder 50 with the base member 330 and is provided on the substrate holder 50 of the ink pack 40. The protruding portion 521 protrudes toward the base member 330 side. In other words, the substrate holder 50 is formed with a protruding portion 521 that protrudes toward the base member 330 in the closed case state and is positioned between the base member 330 and the biasing member 390 in the Z-axis direction. .

The engaging part 530 of the substrate holder 50 includes a locking part 532, a locking part 534, and a protruding part 536. The engaging portion 532 of the engaging portion 530 is provided on the −Y axis direction side of the engaging portion 530 and is engaged with an opening 582 formed in the substrate holding portion 510 and stops. Thereby, the −Y-axis direction side of the engaging portion 530 is fixed to the substrate holding portion 510. The locking portion 534 of the engaging portion 530 is provided on the + Y axis direction side of the engaging portion 530 and stops in engagement with an opening (not shown) formed in the substrate holding portion 510. As a result, the + Y-axis direction side of the engaging portion 530 is fixed to the substrate holding portion 510. The protrusion 536 of the engaging portion 530 is engaged with the ink pack 40 to determine the position of the substrate holder 50 with respect to the ink pack 40.
That is, the substrate holding portion 510 and the engaging portion 530 are two separate members, and the engaging portion 530 sandwiches the portion 422 of the liquid storage portion 410 of the ink pack 40 between the substrate holding portion 510.

As shown in FIGS. 7 and 9, the identification body holder 70 is a member that is disposed on the −X axis direction side with respect to the liquid supply member 450 and is provided in the ink pack 40. The identification body holder 70 is engaged with an identification body forming portion 710 provided with an identification body 711 indicating the color of the UV ink accommodated in the ink pack 40, two projecting portions 721 projecting in the −Z-axis direction, Part 730.
The identifier 711 indicates the color of the UV ink stored in the ink pack 40 based on the difference in shape depending on the arrangement and presence / absence of the protrusions. As the ink cartridge 30 is attached to the cartridge holder 20, the apparatus-side identification unit 230 detects the shape of the identification body 711 provided in the identification body forming unit 710 by contacting the identification body holder 70. The printing apparatus 10 identifies the color of the UV ink stored in the ink pack 40 based on the shape of the identification body 711 detected by the apparatus-side identification unit 230.
As described above, in a closed case state in which the ink pack 40 is accommodated in the inside, the biasing member 390 presses the identification body holder 70 with the base member 330 and is provided in the identification body holder 70 of the ink pack 40. The protruding portion 721 thus protrudes toward the base member 330 side. In other words, the identifier holder 70 is formed with a protruding portion 721 that protrudes toward the base member 330 in the closed case state and is positioned between the base member 330 and the biasing member 390 in the Z-axis direction. Yes.
The protruding portion 721 is an example of a “boss portion”.

The engaging part 730 of the identification body holder 70 includes a locking part 732, a locking part 734, and a protruding part 736. The locking portion 732 of the engaging portion 730 is provided on the −Y axis direction side of the engaging portion 730 and stops in engagement with an opening 782 formed in the identification body forming portion 710. Thereby, the −Y-axis direction side of the engaging portion 730 is fixed to the identification body forming portion 710. The locking portion 734 of the engaging portion 730 is provided on the + Y axis direction side of the engaging portion 730 and stops in contact with an opening (not shown) formed in the identification body forming portion 710. As a result, the + Y-axis direction side of the engaging portion 730 is fixed to the identification body forming portion 710. The protrusion 736 of the engaging portion 730 is engaged with the ink pack 40 to determine the position of the identification body holder 70 with respect to the ink pack 40.
The identifier forming part 710 and the engaging part 730 are two separate members, and the engaging part 730 sandwiches the part 426 of the liquid storage part 410 of the ink pack 40 between the identifier forming part 710 and the engaging part 730.

As shown in FIGS. 10 and 11, the pedestal member 330 is attached to the first housing portion 311 (see FIG. 5), the pedestal portion 340, and a positioning member 350 that is an example of a “second positioning member”. And have. The liquid supply member 450 is positioned and fixed with respect to the base portion 340 by the positioning member 350 of the base member 330.
In a state where the liquid supply member 450 is attached to the pedestal member 330, the tip 450 a of the liquid supply member 450 is disposed at a position protruding from the side wall 341 of the pedestal portion 340 to the −Y axis direction side. Furthermore, between the front end 450a and the base end 450b of the liquid supply member 450, a pedestal portion 340 and a positioning member 350 are sequentially arranged along the + Y axis direction.

In the Y-axis direction, the positioning member 350 includes a side wall 351, a side wall 352, and an inclined wall 353 that is continuous with the side wall 352 and inclined toward the base end 450b in order from the side close to the distal end 450a of the liquid supply member 450. That is, the side wall 351, the side wall 352, and the inclined wall 353 are disposed between the front end 450a and the base end 450b of the liquid supply member 450. The surface of the side wall 352 that faces the side wall 351 is a side surface 352a and is located on the distal end 450a side (located on the side closer to the distal end 450a than the base end 450b). The surface on the + Z-axis direction side of the inclined wall 353 is an inclined surface 353a that is continuous with the side surface 352a and is inclined toward the base end 450b in the Z-axis direction.
That is, in the positioning member 350, the side surface 352a and the inclined surface 353a are sequentially arranged along the + Z-axis direction. Thus, the positioning member 350 has the side surface 352a located on the distal end 450a side, and the inclined surface 353a that is continuous with the side surface 352a and is inclined toward the proximal end 450b side in the Z-axis direction. The distance between the side wall 351 and the inclined wall 353 is wider than the distance between the side wall 351 and the side wall 352. Furthermore, the interval between the side wall 351 and the inclined wall 353 is wide in the + Z-axis direction.
The side wall 352 and the inclined wall 353 are made of the same member, and are an example of a “partition wall”. That is, the side wall 352 and the inclined wall 353 are made of the same member, the surface facing the side wall 351 of the same member is the side surface 352a, and the surface on the + Z-axis direction side of the same member is the inclined surface 353a. Further, the side wall 352 and the inclined wall 353 may be separate members.

When the ink stored in the liquid storage unit 410 becomes empty, the user removes the ink pack 40 in which the ink is empty from the base member 330 after opening the housing unit 310, and the ink The ink pack 40 filled with is attached to the base member 330, and the casing 310 is closed.
When removing the ink pack 40 from the base member 330, that is, when removing the liquid supply member 450 from the base member 330, the liquid supply member 450 moves from the side wall 352 toward the inclined wall 353, and the side wall 351 and the inclined wall 353. Is removed to the outside of the base member 330.
Further, when the ink pack 40 is attached to the base member 330, that is, when the liquid supply member 450 is attached to the base member 330, the liquid supply member 450 moves from the inclined wall 353 toward the side wall 352, and the side wall 351 and the inclined wall are moved. It is attached inside pedestal member 330 from between 353. Specifically, the liquid supply member 450 is carried in from a portion where the interval between the side wall 351 and the inclined wall 353 is widened, and passes through the portion where the interval between the side wall 351 and the inclined wall 353 is narrow, It is attached between the side wall 351 and the side wall 352. A portion where the distance between the side wall 351 and the inclined wall 353 is wide corresponds to a portion that receives the liquid supply member 450 when the liquid supply member 450 is attached to the base member 330.
In the present embodiment, when the liquid supply member 450 is attached to the pedestal member 330, the portion for receiving the liquid supply member 450 is widened, so that the liquid supply member is smaller than the case where the side for receiving the liquid supply member 450 is narrow. 450 can be easily attached to the base member 330.

In the closed case state in which the ink pack 40 is accommodated inside, the base member 330 and the biasing member 390 are liquid between the first casing portion 311 and the second casing portion 315 in the Z-axis direction. The supply members 450 are arranged to face each other.
In the Z-axis direction, the liquid supply member 450 is disposed away from the base member 330 (the pedestal portion 340 and the positioning member 350) and the biasing member 390. For this reason, the liquid supply member 450 can be displaced in the Z-axis direction. Further, the amount of displacement of the liquid supply member 450 in the Z-axis direction is regulated by the base member 330 (the pedestal 340 and the positioning member 350) and the biasing member 390. That is, the base member 330 includes the positioning member 350 that regulates the amount of displacement of the liquid supply member 450 in the Z-axis direction in the closed case state with the biasing member 390.
As described above, the base member 330 (the pedestal portion 340 and the positioning member 350) and the biasing member 390 suppress excessive displacement of the liquid supply member 450 that prevents the liquid supply needle 210 and the liquid supply member 450 from being fitted. Has been. In other words, the liquid supply member 450 is displaceable in the Z-axis direction, and the displacement amount in the Z-axis direction is fitted between the liquid supply needle 210 and the liquid supply member 450 by the base member 330 and the biasing member 390. It is regulated to the extent possible.

Specifically, in the Z-axis direction, the liquid supply member 450 is disposed between the side wall 341 of the pedestal portion 340 and the biasing member 390, and can be displaced between the side wall 341 of the base portion 340 and the biasing member 390. It has become. In other words, the liquid supply member 450 can be displaced in the Z-axis direction, and the side wall 341 and the biasing member 390 of the pedestal 340 are arranged so that the liquid supply member 450 is not excessively displaced in the Z-axis direction. ing.
Further, in the Z-axis direction, the liquid supply member 450 is disposed between the side walls 351 and 352 of the positioning member 350 and the biasing member 390, and between the side walls 351 and 352 of the positioning member 350 and the biasing member 390. Displaceable. That is, the liquid supply member 450 can be displaced in the Z-axis direction, and the side walls 351 and 352 of the positioning member 350 and the biasing member 390 can prevent the liquid supply member 450 from being excessively displaced in the Z-axis direction. Has been placed.
By preventing the liquid supply member 450 from being excessively displaced, for example, it is possible to suppress a problem that the liquid supply member 450 is bent and it becomes difficult to supply ink through the liquid supply member 450.

In the closed case state, the side wall 352 of the positioning member 350 is in contact with the liquid supply member 450 and restricts the movement of the liquid supply member 450 in the Y-axis direction. Note that the side wall 351 of the positioning member 350 may be in contact with the liquid supply member 450, or both the side walls 351 and 352 of the positioning member 350 may be in contact with the liquid supply member 450.
Further, although not shown, the positioning member 350 is in contact with the liquid supply member 450 and restricts the movement of the liquid supply member 450 in the X-axis direction.
As described above, the positioning member 350 restricts the movement of the liquid supply member 450 in the X-axis direction and the movement in the Y-axis direction. That is, the positioning member 350 restricts the movement of the liquid supply member 450 in the X-axis direction and the movement in the Y-axis direction, and positions and fixes the liquid supply member 450 with respect to the pedestal portion 340.

In the printing apparatus 10, when the ink stored in the liquid storage unit 410 becomes empty, the ink pack 40 in which the ink is empty is removed from the base member 330, and the new ink pack 40 filled with ink is removed from the base member 330. The ink pack 40 is replaced by a procedure of attaching to the liquid supply member 450 of the new ink pack 40 and inserting the liquid supply member 450 of the new ink pack 40 into the liquid supply needle 210 of the cartridge holder 20.
Further, when the ink pack 40 is removed, an operation of removing the liquid supply member 450 of the ink pack 40 from the liquid supply needle 210 of the cartridge holder 20 occurs. When the ink pack 40 is attached, the liquid supply member 450 of the ink pack 40 is removed from the cartridge. An operation of inserting into the liquid supply needle 210 of the holder 20 occurs.

  When the liquid supply member 450 of the ink pack 40 and the liquid supply needle 210 of the cartridge holder 20 protrude along the Y-axis direction and the positions in the Z-axis direction are the same, the user can use the liquid supply member 450 of the ink pack 40. Can be easily (properly) removed from the liquid supply needle 210 of the cartridge holder 20, and the liquid supply member 450 of the ink pack 40 can be easily (properly) inserted into the liquid supply needle 210 of the cartridge holder 20. . That is, the liquid supply member 450 can be easily removed from and inserted into the liquid supply needle 210.

  However, when the positions of the liquid supply member 450 and the liquid supply needle 210 in the Z-axis direction change due to aging, assembly errors, etc., and the liquid supply member 450 and the liquid supply needle 210 are not arranged at the same height, the user It becomes difficult to insert the liquid supply member 450 of the new ink pack 40 into the liquid supply needle 210 of the cartridge holder 20. If the liquid supply member 450 is not properly inserted into the liquid supply needle 210, there is a possibility that UV ink leaks from a portion where the liquid supply member 450 is attached to the liquid supply needle 210.

In the present embodiment, since the liquid supply member 450 can be displaced in the Z-axis direction, even if the position of the liquid supply member 450 in the Z-axis direction changes due to aging, for example, the liquid supply needle 210. By adjusting the position of the liquid supply member 450 in the Z-axis direction so as to be the same as the position in the Z-axis direction, the liquid supply member 450 can be properly inserted into the liquid supply needle 210.
Furthermore, for example, when the liquid supply needle 210 is inclined with respect to the Y-axis direction due to aging, when the liquid supply member 450 is pushed into the liquid supply needle 210, the liquid supply member 450 can be displaced in the Z-axis direction. Therefore, the liquid supply member 450 can be displaced along the above-described inclination in the Y-axis direction, and the liquid supply member 450 can be properly inserted into the liquid supply needle 210.

  Thus, in this embodiment, since the liquid supply member 450 can be displaced in the Z-axis direction, the position of the liquid supply member 450 in the Z-axis direction and the position of the liquid supply needle 210 in the Z-axis direction are deteriorated due to aging. Even if it has changed, the liquid supply member 450 can be properly inserted into the liquid supply needle 210. Accordingly, it is possible to suppress the problem that the UV ink leaks from the portion where the liquid supply member 450 is attached to the liquid supply needle 210.

  As shown in FIGS. 10 and 12, the pedestal member 330 is attached to the first housing portion 311 (see FIG. 5), the pedestal portion 340, and a positioning member 360 that is an example of a “first positioning member”. , 380. The substrate holder 50 is attached to the base member 330. Specifically, the substrate holder 50 is positioned and fixed with respect to the pedestal portion 340 by a positioning member 360. More specifically, the substrate holder 50 is positioned and fixed to the pedestal portion 340 by the positioning member 360 by fitting (fitting) the protruding portion 521 of the substrate holder 50 into the through hole 370 of the positioning member 360. ing.

The through hole 370 of the positioning member 360 is a hole that penetrates the positioning member 360 in the Z-axis direction. In the through hole 370, the second boss hole 375, the inner peripheral surface 374, and the first boss hole 373 are disposed along the −Z axis direction. The diameter of the second boss hole 375 is longer than the diameter of the first boss hole 373, and the wall surface connecting the diameter of the second boss hole 375 and the first boss hole 373 becomes the inner peripheral surface 374. For this reason, the inner peripheral surface 374 is inclined with respect to the Z-axis direction. The second boss hole 375 is disposed on the substrate holder 50 side with respect to the first boss hole 373 in the closed case state. Furthermore, the first boss hole 373 is disposed inside the second boss hole 375 in a plan view viewed from the Z-axis direction. In other words, the second boss hole 375 has a larger diameter than the first boss hole 373 in the plan view as viewed from the Z-axis direction, and is arranged so that the first boss hole 373 is located inside. Has been.
As described above, the positioning member 360 is formed with the first boss hole 373, the second boss hole 375, and the inner peripheral surface 374.

In the through hole 370, the −Z axis direction side with respect to the first boss hole 373 becomes the first through hole 371, and the + Z axis direction side with respect to the first boss hole 373 becomes the second through hole 372. That is, the first boss hole 373 forms a boundary between the first through hole 371 and the second through hole 372, and the protruding portion 521 (second protruding portion 521b) is fitted therein. The second boss hole 375 and the inner peripheral surface 374 are components of the second through hole 372.
In a plan view seen from the Y-axis direction, the inner peripheral surface of the first through-hole 371 is arranged along the Z-axis direction and has the same shape (cross-sectional shape) as the second protrusion 521b of the substrate holder 50. ing. That is, the first through hole 371 has a cross-sectional shape that allows the second protrusion 521b of the substrate holder 50 to be fitted (fitted). As a result, the second protrusion 521b of the substrate holder 50 passes through the second through hole 372, the inner peripheral surface 374, and the first boss hole 373, and enters the first through hole 371. Mated. The first through hole 371 may be a bottomed concave hole (dent) instead of the through hole.
Thus, the base member 330 has a first boss hole 373 into which the protruding portion 521 (second protruding portion 521b) is fitted, and a diameter larger than that of the first boss hole 373 from the Z-axis direction. The second boss hole 375 is disposed so that the first boss hole 373 is located inside in the plan view as viewed, and is an inclined surface connecting the first boss hole 373 and the second boss hole 375. An inner peripheral surface 374 is provided. Further, the first boss hole 373, the second boss hole 375, and the inner peripheral surface 374 are formed in the positioning member 360 that is a component of the base member 330.

  The user removes the liquid container 410 from which ink has been emptied from the base member 330 and attaches the liquid container 410 filled with ink to the base member 330. When the user attaches the liquid container 410 filled with ink to the base member 330, the tip of the second protrusion 521 b of the substrate holder 50 is in the second boss hole 375 (second through hole 372). The substrate holder 50 is pushed into the base member 330 so as to be disposed inside. Then, the second protrusion 521 b of the substrate holder 50 is guided to the first boss hole 373 by the inner peripheral surface 374, passes through the first boss hole 373, and fits into the first through hole 371. Is done. The substrate holder 50 is appropriately positioned and fixed with respect to the pedestal portion 340 (the base member 330) by the positioning member 360. Further, even if the second protrusion 521b is not pushed into the first boss hole 373 by the user, as long as it is disposed inside the second boss hole 375 by the user, When closing the second casing 315, a part of the substrate holder 50, specifically, the surface opposite to the surface on which the protruding portion 521 is formed is pressed by the urging member 390, and the substrate holder 50 The substrate holder 50 is pushed into the base member 330 such that the tip of the second protrusion 521b is disposed inside the second boss hole 375 (second through hole 372). Therefore, the substrate holder 50 can be properly positioned and fixed with respect to the pedestal portion 340 (base member 330) by the positioning member 360.

If the second through-hole 372 has the same cross-sectional shape as the first through-hole 371, that is, in plan view as viewed from the Z-axis direction, the first boss hole 373 and the second boss hole 375 are When they have the same diameter and overlap with each other in plan, the user places the substrate holder 50 on the base member so that the tip of the second protrusion 521b of the substrate holder 50 is disposed inside the second boss hole 375. Push into 330. However, when the substrate holder 50 is pushed into the base member 330 in a state where the tip of the second protrusion 521b of the substrate holder 50 is not disposed inside the second boss hole 375, the substrate holder 50 is moved to the base portion 340. In some cases, the positioning and fixing may not be properly performed with respect to the (base member 330). Further, even when the tip of the second protrusion 521 b of the substrate holder 50 is disposed inside the second boss hole 375, the user holds the substrate holder 50 obliquely with respect to the base member 330. When pushed in the direction (direction intersecting the Z-axis direction), the protruding portion 521 of the substrate holder 50 is curved, and the substrate holder 50 may not be properly positioned and fixed with respect to the base portion 340 (the base member 330).
When the ink cartridge 30 is mounted on the cartridge holder 20 in a state where the substrate holder 50 is not properly positioned and fixed with respect to the base member 330, the substrate 60 and the device side terminal portion 220 of the cartridge holder 20 are appropriately electrically connected. There is a risk that it will not be performed.

In the present embodiment, since the second boss hole 375 has a larger diameter than the first boss hole 373, the second boss hole 375 and the first boss hole 373 have the same diameter ( Compared with a configuration that does not have the inner peripheral surface 374 inclined in the Z-axis direction, the tip of the second protrusion 521b of the substrate holder 50 can be easily placed inside the second boss hole 375. Furthermore, if the tip of the second protrusion 521b of the substrate holder 50 is disposed inside the second boss hole 375, the urging member 390 presses the substrate holder 50, whereby the inner peripheral surface 374 becomes Since the tip end of the second protrusion 521 b is guided to the first boss hole 373, the second protrusion 521 b is fitted into the first through hole 371, and the substrate holder 50 is attached to the base member 330. It can be positioned and fixed properly.
That is, even when the second protrusion 521b is not disposed so as to overlap the first boss hole 373 in a plan view as viewed from the Z-axis direction, the second protrusion 521b is not connected to the second boss. If it is arranged inside the hole 375, the second protrusion 521 b can be guided to the first boss hole 373 by the inner peripheral surface 374 and can be fitted into the first through hole 371. Further, even when the user pushes the substrate holder 50 in an oblique direction (a direction intersecting the Z-axis direction) with respect to the base member 330, the second protrusion 521b is formed by the inner peripheral surface 374 in the first direction. The substrate holder 50 can be properly positioned and fixed with respect to the base member 330.
Thus, since this embodiment has the inner peripheral surface 374 inclined in the Z-axis direction, the substrate holder 50 is made to be smaller than the case where the inner peripheral surface 374 inclined in the Z-axis direction is not provided. It is possible to properly position and fix the base member 330. Therefore, when the substrate holder 50 is not properly positioned and fixed with respect to the base member 330 and the ink cartridge 30 is mounted on the cartridge holder 20, the substrate 60 and the device-side terminal portion 220 of the cartridge holder 20 are properly electrically connected. The problem of not being connected can be suppressed.

As shown in FIG. 10, the identification body holder 70 is attached to the base member 330. Specifically, the identification body holder 70 is positioned and fixed with respect to the base portion 340 by a positioning member 380. More specifically, by fitting the protrusion 721 of the identification body holder 70 into the through-hole 381 of the positioning member 380 (fitting), the identification body holder 70 is placed on the pedestal 340 (the base member 330) by the positioning member 380. ).
The positioning member 380 has the same configuration as the positioning member 360. The through hole 381 of the positioning member 380 is a hole that penetrates the positioning member 380 in the Z-axis direction, and has the same configuration as the through hole 370 of the positioning member 360. Specifically, the through hole 381 of the positioning member 380 has a first boss hole (not shown) into which the protruding portion 721 of the identification body holder 70 is fitted, and has a diameter larger than that of the first boss hole. A second boss hole (not shown) arranged so that the first boss hole is located inside in a plan view viewed from the axial direction, and an inclination connecting the first boss hole and the second boss hole An inner peripheral surface (not shown) that is a surface is formed.
Thus, the positioning member 380 is formed with the first boss hole, the second boss hole, and the inner peripheral surface.

When the liquid container 410 filled with ink is attached to the base member 330, the user places the tip of the protrusion 721 of the discriminator holder 70 inside the second boss hole so that the discriminator The holder 70 is pushed into the base member 330. Then, the projecting portion 721 of the identification body holder 70 is guided into the first boss hole by the inner peripheral surface, and is properly positioned and fixed in the through hole 381 of the positioning member 380. As a result, the identification body holder 70 can be properly positioned and fixed with respect to the base member 330 by the positioning member 380.
If the ink cartridge 30 is mounted on the cartridge holder 20 in a state where the identification body holder 70 is not properly positioned and fixed with respect to the base member 330, the apparatus-side identification unit 230 does not contact the identification body holder 70, and the identification body holder 70 is identified. It may be difficult to detect the shape of the identification body 711 provided in the body forming unit 710. In this embodiment, since the identification body holder 70 is properly positioned and fixed with respect to the base member 330, the apparatus-side identification section 230 stably contacts the identification body holder 70 and is provided in the identification body formation section 710. The shape of the identified identification body 711 can be detected stably.

In this embodiment, the positioning member 350 is disposed so as to contact the liquid supply member, and movement of the liquid supply member 450 in the X-axis direction and movement in the Y-axis direction are restricted.
The positioning member 350 may be disposed away from the liquid supply member 450, and the liquid supply member 450 may be configured to be displaceable with respect to the X-axis direction and the Y-axis direction. That is, the liquid supply member 450 may be configured to be displaceable in the X axis direction and the Y axis direction in addition to the Z axis direction.
Furthermore, the liquid supply member 450 may be configured to be displaceable in either the X-axis direction or the Y-axis direction in addition to the Z-axis direction.

  Furthermore, the ink cartridge 30 according to the present embodiment can be applied to a printing apparatus (liquid ejection apparatus) different from the above embodiment. For example, a color material discharge device having a color material discharge head used for manufacturing a color filter such as a liquid crystal display, an organic EL (Electro Luminescence) display, an electrode material discharge head used for forming an electrode such as an FED (surface emitting display), etc. The present invention can also be applied to an electrode material discharge device having a bioorganic matter discharge head having a bioorganic discharge head used for manufacturing a biochip (biochemical element).

  DESCRIPTION OF SYMBOLS 10 ... Printing apparatus, 20 ... Cartridge holder, 30 ... Ink cartridge, 40 ... Ink pack, 50 ... Substrate holder, 60 ... Substrate, 70 ... Identification body holder, 210 ... Liquid supply needle, 310 ... Housing part, 311 ... No. 1 housing part, 315 ... second housing part, 330 ... base member, 340 ... pedestal part, 350, 360, 380 ... positioning member, 351 ... side wall, 352 ... side wall, 352a ... side surface, 353 ... inclined wall 353a ... inclined surface, 370 ... through hole, 410 ... liquid container, 450 ... liquid supply member.

Claims (6)

A liquid container that contains a liquid container having a liquid supply port that can be fitted to a liquid supply needle of a printing apparatus,
The lower case,
An upper case provided to be openable and closable with respect to the lower case;
A base member provided in the lower case;
An urging member disposed between the lower case and the upper case;
Have
In the closed case state in which the liquid container is housed inside and the upper case is closed with respect to the lower case,
The base member and the biasing member are opposed to each other with the liquid supply port in between in the first direction in which the lower case and the upper case are opposed to each other.
The liquid supply port is displaceable in the first direction, and a displacement amount in the first direction is a range in which the liquid supply needle and the liquid supply port can be fitted by the base member and the biasing member. A liquid container characterized by being regulated by A mounting holder provided on the liquid container and projecting toward the base member in the closed case state and having a boss portion formed between the base member and the biasing member in the first direction. In addition,
In the base member,
A first boss hole into which the boss portion is fitted;
The first boss hole is disposed on the mounting holder side in the closed case state, has a larger diameter than the first boss hole, and the first boss hole in a plan view as viewed from the first direction. A second boss hole arranged so that the boss hole is located inside;
An inner peripheral surface that is an inclined surface connecting the first boss hole and the second boss hole;
The liquid container according to claim 1, wherein the liquid container is provided.   3. The mounting holder is a substrate holder that holds a substrate that can be electrically connected to the printing apparatus, or an identification body holder having an identification body that can identify liquid information. Liquid container.   The biasing member is attached to the inside of the upper case, and in the closed case state, presses the mounting holder between the base member and positions and fixes the mounting holder with respect to the base member. The liquid container according to claim 2, wherein the container is a liquid container. The base member has a first positioning member,
The said 1st boss hole, the said 2nd boss hole, and the said internal peripheral surface are formed in the said 1st positioning member, The any one of Claims 2 thru | or 4 characterized by the above-mentioned. Liquid container. In the closed case state, the base member regulates a displacement amount of the liquid supply port in the first direction together with the biasing member to a range in which the liquid supply needle and the liquid supply port can be fitted. A positioning member
The second positioning member has a partition wall positioned between a proximal end and a distal end of the liquid supply port in the closed case state,
The said partition has the side surface located in the said front end side, and the inclined surface which continued to the said side surface and inclined to the said base end side in the said 1st direction. The liquid container according to item.

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