JP7287586B2 - Mounted body and liquid injection system - Google Patents

Description

The present invention relates to a liquid container and a liquid ejection system.

A so-called ink pack is known as one aspect of the liquid container (for example, Patent Documents 1 to 3 below). An ink pack stores ink supplied to an inkjet printer (hereinafter also simply referred to as a “printer”), which is one form of a liquid ejecting apparatus, in a flexible container. Some printers to which ink packs are attached have a case such as a tray in which the ink packs are placed. In such a printer, an ink supply path and an electrical communication path are established between the ink pack and the printer by arranging the ink pack in a case and attaching the ink pack to the printer together with the case.

JP 2009-279876 A International publication WO2013/105504 pamphlet JP 2014-240182 A

It is desirable that the ink pack is attached to the printer in a predetermined and appropriate posture. If the mounting posture is not appropriate, there is a possibility that the printer's ink supply path and electrical communication path cannot be established. In addition, there is concern that the connection state of the ink supply path and the electrical communication path may become unstable, and the connection state may deteriorate over time. In addition, when connecting to a printer, excessive stress may be generated due to contact with the components on the printer side, which may cause damage or deterioration. Research has been conducted to improve the mounting posture of the ink pack to the printer, but there is still room for improvement. Such a problem is not limited to ink packs, ink packs, and printers, and is common to liquid ejection systems that include liquid containers and liquid ejection devices.

The present invention has been made to solve at least part of the above problems, and can be implemented as the following modes.
[Mode 1]
The direction parallel to the direction of gravity is defined as the Z direction, the direction of the Z direction that is the same as the direction of gravity is defined as the +Z direction, the direction opposite to the direction of gravity among the Z directions is defined as the -Z direction, and the Z direction. , one of the Y directions is the +Y direction, the other of the Y directions is the -Y direction, and the Z direction and the Y direction are perpendicular to each other. is the X direction, one of the X directions is the +X direction, and the other of the X directions is the -X direction, the case housing portion and the +Y direction side of the case housing portion a device-side fixing structure located at the end of the case storage portion, a liquid introduction portion located at the +Y-direction end of the case storage portion, and a device-side electricity located at the +Y-direction end of the case storage portion a connecting part, the mounting body being attachable to and detachable from the liquid ejecting apparatus, the case being inserted into the case accommodating part by moving along the +Y direction, and detachable from the case. and a liquid containing body, wherein the case includes a hollow convex portion projecting in the -Z direction side at the end on the +Y direction side, and an internal space formed by the convex portion on the -Z direction side. a case-side fixing structure having a loop-shaped groove that guides the device-side fixing structure in a wall surface including the wall surface of the The liquid container has flexibility, and is positioned at the +Y direction end when the liquid container is in a mounted state in which the liquid container is mounted on the liquid ejecting apparatus. a connection member, wherein the connection member includes a liquid outlet into which the liquid introduction portion is inserted in the +Y direction in the attached state, and a normal vector having a vector component in the -Z direction in the attached state. a container-side electrical connection portion that is in electrical contact with the device-side electrical connection portion and includes a contact surface having the vector component in the +Y direction, and the case-side fixing structure and the container-side electrical connection. The portions are formed at positions at least partially overlapping each other when viewed in the Z direction in the posture of the mounted state, and in the posture of the mounted state, the width of the liquid container in the Z direction is: The width in the Y direction and the width in the X direction are smaller than the width in the X direction, and in a state where the case-side fixing structure and the device-side fixing structure are engaged, the contact surface extends from the device-side electrical connection portion to the While receiving a force having components in the -Y direction and the +Z direction, the locking portion restricts the movement of the mounting body in the -Y direction, and the container side electrical connection portion and the device side electrical connection portion are regulated. A mounting body that is electrically connected.
[Mode 2]
A liquid ejecting system including a liquid ejecting device and a mounting body, wherein a direction parallel to the direction of gravity is defined as a Z direction, a direction of the Z direction that is the same as the direction of gravity is defined as a +Z direction, and a direction parallel to the direction of gravity is defined as a +Z direction. The direction opposite to the gravitational direction is the -Z direction, the direction orthogonal to the Z direction is the Y direction, one of the Y directions is the +Y direction, and the other Y direction is the Y direction. is the -Y direction, the direction perpendicular to the Z direction and the Y direction is the X direction, one of the X directions is the +X direction, and the other of the X directions is the -X direction , the liquid ejecting apparatus includes a case housing portion, a device-side fixing structure positioned at the +Y-direction end of the case housing portion, and a device-side fixing structure positioned at the +Y-direction end of the case housing portion. and a device-side electrical connection portion located at the +Y direction end of the case housing portion, and the mounting body moves along the +Y direction to move the case housing portion. and a liquid container detachable from the case, wherein the case includes a hollow convex portion projecting in the -Z direction at the end on the +Y direction side. , a loop-shaped groove that guides the apparatus-side fixing structure to a wall surface including a wall surface on the -Z direction side of the internal space formed by the convex portion, and the apparatus-side fixing structure provided in the groove is locked. a case-side fixing structure having a locking portion, wherein the liquid containing body is flexible and contains a liquid containing portion; a connection member located at the end on the +Y direction side when the connection member is in the state of being mounted, the connection member includes a liquid outlet into which the liquid introduction portion is inserted in the mounted state, and a liquid outlet in the mounted state a container-side electrical connection portion electrically contacting the device-side electrical connection portion, the line vector including a contact surface having a vector component in the -Z direction and a vector component in the +Y direction; The case-side fixing structure and the housing-body-side electrical connection portion are formed at a position where at least a part thereof overlaps with each other when viewed in the Z direction in the mounted state. The width of the liquid container in the Z direction is smaller than the width in the Y direction and the width in the X direction. While the contact surface receives a force having components in the -Y direction and the +Z direction from the device side electrical connection part, the locking part restricts the movement of the mounting body in the -Y direction, and the housing body side A liquid ejection system, wherein an electrical connection is electrically connected to the device-side electrical connection.

[1] According to a first aspect of the present invention, there is provided a liquid container attached to a liquid ejecting apparatus . The direction parallel to the direction of gravity is defined as the Z direction, the direction of the Z direction that is the same as the direction of gravity is defined as the +Z direction, the direction opposite to the direction of gravity among the Z directions is defined as the -Z direction, and the Z A direction perpendicular to the direction is defined as a Y direction, one of the Y directions is defined as a +Y direction, another direction of the Y directions is defined as a -Y direction, and the Z direction and the Y direction are orthogonal to each other. The directions are defined as the X direction, one of the X directions is defined as the +X direction, and the other of the X directions is defined as the -X direction. The liquid ejecting device may include a housing, a case, a device-side fixing structure, a liquid introduction portion, a device-side electrical connection portion, a first positioning portion, and a second positioning portion. The housing may be provided with a case accommodating portion therein. The case may be inserted into the case housing portion by moving along the +Y direction. The case may have a convex portion and a case-side fixing structure. The convex portion may protrude in the -Z direction from the end on the +Y direction side. The case-side fixing structure may include an internal space of the convex portion. The case-side fixing structure engages with the device-side fixing structure in a case-housed state in which the case is attached to the case housing portion and a force directed toward the -Z direction is applied to the case. to restrict the movement of the case in the -Y direction. The liquid introduction portion may be positioned at the +Y direction end portion of the case storage portion. The apparatus-side electrical connection portion may be positioned at the +Y-direction end portion of the case housing portion. The first positioning portion and the second positioning portion extend from the +Y direction side end of the case housing portion toward the -Y direction side, and are mutually in the X direction with the liquid introduction portion interposed therebetween. They may be provided at separated positions. The liquid container may be configured to be attachable to and detachable from the case of the liquid ejecting device. The liquid container may include a container and a connecting member. The storage section may be flexible and store a liquid. The connection member may be positioned at the +Y-direction end when the liquid container is in the attached state of being attached to the liquid ejecting apparatus. The connection member may be provided with a liquid outlet, a container-side electrical connection, a first receiving portion, a second receiving portion, and a recess. The liquid introduction portion may be inserted into the liquid outlet in the +Y direction in the mounted state. The container-side electrical connection portion may be in electrical contact with the device-side electrical connection portion while receiving a force having at least the component in the +Z direction from the device-side electrical connection portion in the mounted state. The first receiving portion may receive the first positioning portion in the mounted state. The second receiving portion may receive the second positioning portion in the mounted state. The concave portion may be depressed in the -Z direction in the mounted state, and may accommodate the convex portion of the case . The concave portion and the container-side electrical connection portion may be formed at positions at least partially overlapping each other when viewed in the Z direction in the mounted state. In the mounted posture, the width of the liquid container in the Z direction may be smaller than the width in the Y direction and the width in the X direction.
According to the liquid container of this aspect, at least a part of the force in the +Z direction that the container-side electrical connection portion receives from the device-side electrical connection portion is absorbed by the device-side fixing structure so as to form the case engagement state. It is reduced by the -Z force applied to the fixed structure. Therefore, the component of the force in the Z direction applied to the liquid container is reduced, the arrangement posture of the liquid container is suppressed from deviating from the proper posture in the Z direction, and the liquid container relative to the liquid ejecting apparatus is suppressed. Improves connectivity. In addition, since it is possible to suppress unnecessary stress from occurring in the connecting portion between the liquid ejection device and the liquid container due to deterioration of the arrangement posture of the liquid container, damage and deterioration of the connecting portion can be suppressed. Further, according to the liquid container of this aspect, since the width in the Z direction is smaller than the other widths in the X direction and the Y direction in the mounted state, the liquid container can be arranged in the case more easily. stabilize. Therefore, the connection state of the liquid container with respect to the liquid ejection device is further improved.

[2] In the liquid container of the above aspect, the container-side electrical connection portion has a contact surface that contacts the device-side electrical connection portion in the attached state, and the normal vector of the contact surface It may have the vector component in the -Z direction and the vector component in the +Y direction when the body is in the posture of the wearing state. According to the liquid container of this form, it is possible to form an electrical connection state between the container-side electrical connection portion and the apparatus-side electrical connection portion by utilizing the force when the case moves in the +Y direction. It is possible to improve the electrical connectivity between the container-side electrical connection portion and the device-side electrical connection portion.

[3] In the liquid container of the above aspect, the first receiving portion is positioned on the -X direction side with respect to the liquid outlet, and the second receiving portion is positioned on the -X direction side with respect to the liquid outlet when the liquid container is in the mounted state. may be positioned on the +X direction side with respect to the liquid outlet. According to the liquid container of this aspect, when the liquid container is attached to the liquid ejecting device, the pair of positioning portions and the pair of receiving portions allow the liquid outlet of the liquid container to move toward the liquid introducing portion of the liquid ejecting device. Positioning accuracy in the direction is enhanced. Therefore, connectivity between the liquid inlet and the liquid outlet is improved.

[4] In the liquid container of the above aspect, the container-side electrical connection portion and the concave portion are located between the liquid outlet and the first receiving portion in the X direction when the mounting state is set. can be located in between. According to the liquid container of this aspect, the positioning accuracy of the liquid outlet relative to the liquid introduction portion in the X direction and the positioning of the container-side electrical connection portion relative to the apparatus-side electrical connection portion are achieved by the pair of positioning portions and the pair of receiving portions. Accuracy is improved. Therefore, the connectivity between the liquid inlet and the liquid outlet and the electrical connectivity between the device-side electrical connection and the container-side electrical connection are improved. In addition, the distance in the X direction between the first receiving portion and the second receiving portion increases by the amount of the container side electrical connection portion and the recess provided between the liquid outlet and the first receiving portion, The positioning accuracy is further enhanced by the pair of positioning portions and the pair of receiving portions.

[5] In the liquid container of the above aspect, the first receiving portion has a first opening through which the first positioning portion is inserted, and the second receiving portion is a second opening through which the second positioning portion is inserted. and in the posture of the mounted state, the opening width of the second opening in the X direction may be larger than the opening width of the first opening in the X direction. According to the liquid container of this aspect, the second positioning portion is inserted into the second receiving portion, and the angle in the X direction when positioning is started can be given a margin. It can improve the connectivity of the body. In addition, such a margin can also alleviate the stress generated at the contact portion between the liquid ejection device and the liquid container when they are connected.

[6] According to a second aspect of the present invention, a liquid ejection system is provided. This liquid ejection system may include a liquid ejection device and a liquid container. The direction parallel to the direction of gravity is defined as the Z direction, the direction of the Z direction that is the same as the direction of gravity is defined as the +Z direction, the direction opposite to the direction of gravity among the Z directions is defined as the -Z direction, and the Z direction. , one of the Y directions is the +Y direction, the other of the Y directions is the -Y direction, and the Z direction and the Y direction are perpendicular to each other. is the X direction, one of the X directions is defined as the +X direction, and the other of the X directions is defined as the -X direction. The liquid ejecting device may include a housing, a case, a device-side fixing structure, a liquid introduction portion, a device-side electrical connection portion, a first positioning portion, and a second positioning portion. A case accommodating portion may be provided inside the housing. The case may be inserted into the case housing portion by moving along the +Y direction. The case may have a convex portion and a case-side fixing structure. The convex portion may protrude in the -Z direction at the end on the +Y direction side. The case-side fixing structure may include an internal space of the convex portion. The apparatus-side fixing structure engages with the case-side fixing structure in a case-housed state in which the case is attached to the case housing portion, and in a state in which a force directed toward the -Z direction is applied to the case. to restrict the movement of the case in the -Y direction. The liquid introduction portion may be positioned at the +Y direction end portion of the case storage portion. The apparatus-side electrical connection portion may be positioned at the +Y-direction end portion of the case housing portion. The first positioning portion and the second positioning portion extend from the +Y direction side end of the case housing portion toward the -Y direction side, and are mutually in the X direction with the liquid introduction portion interposed therebetween. They may be provided at separated positions. The liquid container may be configured to be attachable to and detachable from the case. The liquid container may include a container and a connecting member. The storage section may be flexible and store a liquid. The connection member may be positioned at the +Y-direction end when the liquid container is in the attached state of being attached to the liquid ejecting apparatus. The connection member may be provided with a liquid outlet, a container-side electrical connection, a first receiving portion, a second receiving portion, and a recess. The liquid introduction portion may be inserted into the liquid outlet in the +Y direction in the mounted state. The container-side electrical connection portion may be in electrical contact with the device-side electrical connection portion while receiving a force having at least the component in the +Z direction from the device-side electrical connection portion in the mounted state. The first receiving portion may receive the first positioning portion in the mounted state. The second receiving portion may receive the second positioning portion in the mounted state. The concave portion may be depressed in the -Z direction in the mounted state, and may accommodate the convex portion of the case. The concave portion and the container-side electrical connection portion may be formed at positions at least partially overlapping each other when viewed in the Z direction in the mounted state. In the mounted posture, the width of the liquid container in the Z direction may be smaller than the width in the Y direction and the width in the X direction.
According to the liquid ejection system of this aspect, at least a part of the force in the +Z direction that the container-side electrical connection portion receives from the device-side electrical connection portion in the liquid container is at least part of the device-side fixing force for forming the engaged state of the case. It is reduced by the −Z force that the structure imparts to the case-side fixing structure. Therefore, the component of the force in the Z direction applied to the liquid container is reduced, the arrangement posture of the liquid container is suppressed from deviating from the proper posture in the Z direction, and the liquid container relative to the liquid ejecting apparatus is suppressed. Improves connectivity. In addition, since it is possible to suppress unnecessary stress from occurring in the connecting portion between the liquid ejection device and the liquid container due to deterioration of the arrangement posture of the liquid container, damage and deterioration of the connecting portion can be suppressed. Further, according to the liquid ejection system of this aspect, since the width of the liquid container in the Z direction when it is in the mounted state is smaller than the other widths in the X direction and the Y direction, The placement posture in the is more stable. Therefore, the connection state of the liquid container with respect to the liquid ejection device is further improved.

[7] In the liquid ejection system of the above aspect, the container-side electrical connection portion has a contact surface that contacts the device-side electrical connection portion in the attached state, and the normal vector of the contact surface It may have the vector component in the -Z direction and the vector component in the +Y direction when the body is in the posture of the wearing state. According to the liquid ejection system of this aspect, it is possible to form an electrical connection state between the container-side electrical connection portion and the device-side electrical connection portion by utilizing the force when the case moves in the +Y direction. It is possible to improve the electrical connectivity between the container-side electrical connection portion and the device-side electrical connection portion.

[8] In the liquid ejection system of the above aspect, when the liquid container is in the mounted state, the first receiving portion is positioned on the -X direction side with respect to the liquid outlet, The second receiving portion may be positioned on the +X direction side with respect to the liquid outlet. According to the liquid ejecting system of this aspect, when the liquid container is attached to the liquid ejecting device, the pair of positioning portions and the pair of receiving portions allow the liquid outlet of the liquid container to move toward the liquid introducing portion of the liquid ejecting device. Positioning accuracy in the direction is enhanced. Therefore, connectivity between the liquid inlet and the liquid outlet is improved.

[9] In the liquid ejection system of the above aspect, when the liquid container is placed in the mounted state, the container-side electrical connection portion and the concave portion are arranged in the X direction with respect to the liquid outlet port and the second outlet. 1 receptacle. According to the liquid ejection system of this aspect, the positioning accuracy of the liquid outlet relative to the liquid introduction section in the X direction and the positioning of the container-side electrical connection section relative to the device-side electrical connection section are achieved by the pair of positioning sections and the pair of receiving sections. Accuracy is improved. Therefore, the connectivity with the liquid introduction part and the electrical connectivity of the device-side electrical connection part and the container-side electrical connection part are improved. Further, in order to provide the container-side electrical connection portion and the concave portion between the liquid outlet and the first receiving portion, the distance in the X direction between the first receiving portion and the second receiving portion is increased to provide a pair of The positioning accuracy in the X direction is further enhanced by the positioning portion and the pair of receiving portions.

[10] In the liquid ejection system of the above aspect, the first receiving portion has a first opening through which the first positioning portion is inserted, and the second receiving portion is a second opening through which the second positioning portion is inserted. and in the posture of the liquid container in the mounted state, the opening width of the second opening in the X direction may be larger than the opening width of the first opening in the X direction. According to the liquid ejecting system of this aspect, since the angle in the X direction when the second positioning portion is inserted into the second receiving portion can be given a margin, the connectivity of the liquid container to the liquid ejecting apparatus can be improved. can be improved. In addition, such a margin can also alleviate the stress generated at the contact portion between the liquid ejection device and the liquid container when they are connected.

[11] In the liquid ejecting system of the above aspect, when the device-side fixing structure and the case-side fixing structure are engaged with each other, the case is pushed in the +Y direction so that the It may be configured to release the engagement state and allow the movement of the case in the -Y direction. According to this liquid ejecting system, the operation of attaching and detaching the liquid container to and from the liquid ejecting apparatus is simplified, thereby enhancing user convenience.

All of the plurality of constituent elements of each aspect of the present invention described above are not essential, and in order to solve some or all of the above problems, or some or all of the effects described in this specification In order to achieve the above, it is possible to change, delete, replace with new other components, or partially delete the limited contents of some of the plurality of components as appropriate. In addition, in order to solve part or all of the above-described problems or achieve part or all of the effects described in this specification, the technical features included in the above-described one embodiment of the present invention It is also possible to combine some or all of the technical features included in the above-described other forms of the present invention to form an independent form of the present invention.

The present invention can also be implemented in various forms other than the liquid container and the liquid ejection system. For example, it can be realized in the form of a liquid ejecting apparatus, a method of connecting a liquid containing body in the liquid ejecting apparatus, a connection structure, or the like. In this specification, a "system" means a configuration mode in which a plurality of components cooperate with each other to exhibit one or more functions. "System" includes not only aspects in which some or all of a plurality of components are arranged in remote locations and cooperate with each other, but also aspects in which a plurality of components cooperate with each other in a single device. is also included.

FIG. 2 is a schematic perspective view showing the external configuration of the liquid ejecting apparatus; 1 is a first schematic diagram showing an internal configuration of a liquid ejecting device; FIG. FIG. 2 is a second schematic diagram showing the internal configuration of the liquid ejecting device; FIG. 2 is a schematic perspective view showing a liquid supply section extracted; FIG. 4 is a schematic perspective view showing a connection receiving portion extracted from the liquid supply portion; FIG. 4 is a schematic perspective view showing the first liquid container arranged in the first case; FIG. 4 is a first schematic exploded perspective view showing a state in which the first liquid container is taken out from the first case; FIG. 5 is a second schematic exploded perspective view showing a state in which the first liquid container is taken out from the first case; The schematic perspective view which extracts and shows the vicinity of the connection member of a 1st case. FIG. 4 is a schematic perspective view extracting and showing the vicinity of the container-side electrical connection portion; FIG. 4 is a first schematic perspective view showing a lid member of the first case; The 2nd schematic perspective view which shows the cover member of a 1st case. Schematic which shows the front wall part of a 1st case. A schematic perspective view showing the configuration of the lower surface side of the bottom wall portion of the first case. FIG. 5 is a schematic perspective view showing the second liquid container arranged in the second case; FIG. 11 is a first schematic exploded perspective view showing a state in which the second liquid container is taken out from the second case; FIG. 5 is a second schematic exploded perspective view showing a state in which the second liquid container is taken out from the second case; FIG. 4 is a schematic view of the second liquid container arranged in the second case when viewed in the −Y direction; Schematic which shows the front wall part of a 2nd case. A schematic perspective view showing the configuration of the lower surface side of the bottom wall portion of the second case. FIG. 4 is a schematic diagram for explaining a mounting mechanism of the liquid container with respect to the connection receiving portion; Schematic diagram for explaining a mechanism until the engagement of the engaging portion to the engaged portion is completed. FIG. 4 is a schematic diagram for explaining a mechanism for releasing the engagement state between the engaging portions; FIG. 4 is a first schematic diagram for explaining a method of packing a liquid container; FIG. 2B is a second schematic diagram for explaining the method of packing the liquid container; FIG. 5 is a schematic perspective view showing the configuration of a liquid container according to a second embodiment; FIG. 11 is a schematic perspective view showing the structure of a liquid container according to a third embodiment; FIG. 11 is a schematic perspective view showing the structure of a liquid container according to a fourth embodiment; The schematic perspective view which shows the case of 5th Embodiment. FIG. 11 is a first schematic diagram showing a liquid container and a case in the sixth embodiment; A second schematic diagram showing a liquid container and a case in the sixth embodiment. A third schematic diagram showing a liquid container and a case in the sixth embodiment. FIG. 11 is a schematic diagram showing a first combination example of a liquid container and a case as a seventh embodiment; FIG. 11 is a schematic diagram showing a second combination example of a liquid container and a case as the seventh embodiment; FIG. 11 is a schematic diagram showing a third combination example of a liquid container and a case as the seventh embodiment;

A. First embodiment:
In the first embodiment, the configuration of a liquid injection device 10 will be described with reference to FIGS. 1 to 5. FIG. 6 to 20, the configuration of the liquid container 100 attached to the liquid ejecting apparatus 10 will be described together with the configuration of the case 61 used to attach the liquid container 100. FIG. In this specification, the liquid ejecting apparatus 10 with the liquid container 100 attached is also referred to as a "liquid ejecting system 11".

A1. Configuration of the liquid injection device:
[External Configuration of Liquid Ejecting Apparatus]
FIG. 1 is a schematic perspective view showing an external configuration of a liquid ejecting apparatus 10 that constitutes a liquid ejecting system 11. As shown in FIG. In FIG. 1, arrows X, Y, and Z are shown to indicate three mutually orthogonal directions. Note that the arrows X, Y, and Z are shown as appropriate in other drawings referred to in this specification in correspondence with FIG.

The directions indicated by the arrows X, Y, and Z correspond to the orientation of the liquid ejecting apparatus 10 in normal use. A normal use state of the liquid ejecting device 10 means a state in which the liquid ejecting device 10 is placed on a horizontal plane and used. Hereinafter, the directions indicated by the arrows X, Y, and Z are called "X direction", "Y direction", and "Z direction", respectively. Among the X directions, one direction is called "+X direction" and the other direction is called "−X direction". As for the Y and Z directions, one direction is called the "+Y direction" and the "+Z direction", and the other directions are called the "-Y direction" and the "-Z direction".

The X, Y, and Z directions will be described in the order of the Z direction, Y direction, and X direction. The Z direction indicates a direction parallel to the direction of gravity. The +Z direction is the direction of gravity, and the -Z direction is the direction opposite to the direction of gravity. The Z direction coincides with the vertical direction (height direction) of the liquid ejecting device 10 . In the following description, when the liquid ejecting apparatus 10 is called “up” or “down”, unless otherwise specified, it means the vertical direction with reference to the direction of the arrow Z, and “up” means the −Z direction. and "down" means +Z direction.

The Y direction indicates a direction parallel to the front-rear direction (depth direction) of the liquid ejecting apparatus 10 . The +Y direction is the direction from the front side to the back side of the liquid ejecting apparatus 10, and the -Y direction is the direction from the back side to the front side of the liquid ejecting apparatus 10. FIG. In the following description, when the liquid ejecting apparatus 10 is referred to as “front” or “rear”, it means the front-rear direction based on the direction of the arrow Y unless otherwise specified, and the “front” is the −Y direction. , and "after" means in the +Y direction.

The X direction indicates a direction parallel to the left-right direction (width direction) of the liquid ejecting device 10 . The +X direction corresponds to the direction from right to left when facing the front face of the liquid ejecting device 10, and the -X direction corresponds to the direction from left to right. In the following description, the term “right” or “left” with respect to the liquid ejecting apparatus 10 means the left-right direction with respect to the direction of the arrow X unless otherwise specified, and “right” means the −X direction. and "left" means the +X direction.

Note that, in the following description, the X, Y, and Z directions in the description of components (the case 61, the liquid container 100, and the like) separable from the liquid ejecting apparatus 10 are all the liquid ejection directions in the normal use state. The posture in which the device 10 is properly attached is used as a reference.

In this embodiment, the liquid ejecting apparatus 10 is an inkjet printer, and the liquid ejecting system 11 is an inkjet printing system. The liquid consumed by ejection in the liquid ejecting apparatus 10 of this embodiment is ink. The liquid ejecting apparatus 10 forms an image by ejecting ink droplets and recording ink dots on a medium to be processed. Said medium is, for example, printing paper. The liquid ejecting apparatus 10 of the present embodiment includes a housing 10c that is a resin hollow box that constitutes the exterior of the liquid ejecting apparatus 10 . The housing 10c has a substantially rectangular parallelepiped shape. The front portion 12, which faces the −Y direction and is supposed to be faced when the user operates the liquid ejecting apparatus 10, includes an operation portion 13, a medium outlet 14, a medium receiving portion 15, a medium A storage port 16, a medium storage portion 17, and a cover member 18 are provided.

The operation unit 13 has a display unit 13i that displays information for the user, and a plurality of operation buttons 13b that accept user operations. The medium outlet 14 is an outlet for the medium that is drawn out from inside the liquid ejecting device 10 . The medium discharge port 14 is formed as a slit-shaped opening that is wide in the X direction and opens in the -Y direction. The medium receiving portion 15 protrudes like an eave in the −Y direction below the medium discharge port 14 and receives the medium discharged from the medium discharge port 14 .

The medium storage port 16 is an opening through which the user replenishes the liquid ejecting apparatus 10 with medium. In this embodiment, the medium storage opening 16 is opened in the -Y direction below the medium receiving portion 15 and has a substantially rectangular opening shape that is wide in the X direction. The medium storage unit 17 is a tray-shaped member that stores a stock of media that are processing target media in this embodiment. The medium storage portion 17 is housed in the medium housing opening 16 in such a state that the front surface thereof can be seen from the outside of the liquid ejecting apparatus 10 through the medium housing opening 16 . The user stores the medium in the medium storage portion 17 pulled out in the -Y direction from the liquid ejecting apparatus 10 through the medium storage port 16, and loads the medium storage portion 17 from the medium storage port 16 into the medium storage port 16 again. By doing so, the medium can be supplied to the liquid ejecting device 10 .

The cover member 18 is a plate-like member made of resin that forms part of the exterior of the liquid ejecting apparatus 10 . In this embodiment, the cover member 18 has a substantially rectangular shape with a wide width in the X direction, and is arranged below the medium storage opening 16 . The cover member 18 has claws (not shown) on its outer periphery and is detachably attached to the housing 10c. The cover member 18 covers and protects the plurality of liquid containers 100 housed inside the liquid ejection device 10 .

[Internal Configuration of Liquid Ejecting Apparatus]
An overview of the internal configuration of the liquid injection device 10 will be described with reference to FIGS. 2 to 5 in order. FIG. 2 is a schematic diagram of the liquid ejecting apparatus 10 viewed in the +Y direction with the housing 10c and the cover member 18 removed. FIG. 2 shows the control unit 20, the ejection executing unit 30, the medium conveying unit 35, the liquid supply unit 40, and the case storage unit 60 extracted from the main components of the liquid ejecting apparatus 10. is shown. FIG. 3 is a schematic diagram of the liquid ejecting apparatus 10 viewed in the +Z direction with the housing 10c and the cover member 18 removed. 3, illustration of the control unit 20, the ejection execution unit 30, and the medium transport unit 35 shown in FIG. 2 is omitted. For convenience, FIG. 3 shows a state in which each of the plurality of liquid containers 100 is pulled out in the −Y direction together with the case 61 from the placement area LA, which is the mounting position where the mounting to the liquid ejecting apparatus 10 is completed. be.

The liquid ejecting apparatus 10 includes a control section 20, an ejection executing section 30, a medium conveying section 35, a liquid supplying section 40, and a case storage section 60 (FIG. 2). In the liquid ejecting apparatus 10 , the liquid is supplied from the liquid container 100 housed in the case housing section 60 to the ejection execution section 30 via the supply pipe 42 of the liquid supply section 40 . A print image is formed on the medium MP by the ejection execution unit 30 ejecting the liquid onto the medium MP that the medium transport unit 35 feeds out from the medium storage unit 17 and transports. The control unit 20, the ejection execution unit 30, the medium transport unit 35, the liquid supply unit 40, and the case storage unit 60 will be described in order.

[Control section]
The control unit 20 controls driving of each component in the liquid ejecting apparatus 10 . The control unit 20 is composed of a microcomputer having at least a central processing unit and a main memory, and the central processing unit reads various programs into the main memory and executes them to perform various functions. Functions of the control unit 20 will be described in order.

[Injection executing part]
The injection executing section 30 includes a head section 31 and a plurality of tubes 32 (FIG. 2). The head section 31 is supplied with liquid from a liquid supply section 40 via a plurality of tubes 32 . A mechanism for supplying the liquid from the liquid supply section 40 will be described later. The head section 31 includes a liquid chamber (not shown) that stores the liquid supplied from the liquid supply section 40 . A nozzle 33 opening downward is provided on the bottom surface of the liquid chamber. Under the control of the control unit 20, the head unit 31 ejects the liquid in the liquid chamber from the nozzles 33 by a known method such as applying pressure to the ink using a piezo element.

In this embodiment, the head unit 31 is mounted on the carriage 34 and configured to reciprocate linearly in the X direction under the control of the control unit 20 . FIG. 2 shows a double arrow PS indicating the movement direction and movement range of the head section 31 . In this embodiment, the main scanning direction of the liquid ejecting device 10 coincides with the X direction. The ejection execution unit 30 includes, as a driving mechanism for moving the head unit 31, a guide shaft for moving the carriage 34, a motor for generating driving force, and a pulley for transmitting the driving force. Illustrations and detailed descriptions thereof are omitted.

A plurality of tubes 32 connected to the head portion 31 are flexible. A plurality of tubes 32 are arranged in parallel in the Y direction. The plurality of tubes 32 are arranged substantially linearly in the +X direction along the scanning path of the head portion 31 from a joint portion 43, which is a connection portion of the liquid supply portion 40 described later with the supply pipe 42, and extend upward. , bent in the -X direction, and connected to the head portion 31 . The curved portions 32r of the plurality of tubes 32 are displaced as the head portion 31 moves. This prevents the main scanning of the head section 31 from being obstructed by the plurality of tubes 32, and the moving operation of the head section 31 is facilitated.

[Media Conveying Section]
The medium transport unit 35 transports the medium MP to be processed under the control of the control unit 20 (FIG. 2). The medium transport unit 35 includes a transport roller 36 that extends in the X direction below the head unit 31 . Below the transport roller 36, the medium storage section 17 described above is arranged. The medium transport unit 35 includes a feed mechanism (not shown) that feeds out the medium MP one by one from the medium storage unit 17 onto the outer peripheral side surface of the transport roller 36 . The medium conveying unit 35 rotates the conveying roller 36 by a driving motor (not shown), and the medium MP is moved in the −Y direction under the head unit 31 by the rotational driving force. In this embodiment, the sub-scanning direction of the liquid ejecting device 10 coincides with the -Y direction. The medium MP that has passed through the area below the head portion 31 is discharged to the outside of the liquid ejecting apparatus 10 through the medium discharge port 14 .

When executing the printing process in the liquid ejecting apparatus 10 , the control unit 20 causes the medium transport unit 35 to transport the medium MP in the sub-scanning direction described above. Then, above the transport roller 36, the head unit 31 is reciprocated along the transport roller 36 in the main scanning direction, and at the timing determined based on the print data, the head unit 31 moves toward the printing surface of the medium MP. eject ink droplets from As a result, ink dots are recorded on the medium MP at positions determined based on the print data, and an image based on the print data is formed.

[Liquid supply part]
Referring to FIG. 4 together with FIGS. 2 and 3, the liquid supply section 40 will be described. FIG. 4 is a schematic perspective view showing the liquid supply section 40 extracted. The liquid supply unit 40 includes, in addition to the plurality of supply pipes 42 and joint portions 43 described above, a plurality of connection receiving portions 50, a pressure fluctuation generating portion 45, and a pressure transmission pipe 46 (see FIGS. 3 and 4). ). First, the configuration of the plurality of connection receiving portions 50 will be described, and then the supply pipe 42 and the joint portion 43 will be described. Then, the variable pressure generator 45 and the pressure transmission pipe 46 that constitute the liquid suction/delivery mechanism will be described.

[Connection accepting part]
The liquid supply section 40 is connected to each of the plurality of liquid containers 100 housed in the case housing section 60 via the plurality of connection receiving sections 50 . In the liquid ejecting apparatus 10 of this embodiment, as will be described later, four liquid containers 100 are attached for each color ink. Therefore, in this embodiment, the liquid supply section 40 includes four connection receiving sections 50 corresponding to the four liquid containers 100 respectively.

In addition, in the liquid ejecting apparatus 10 of the present embodiment, the four liquid containers 100 include three first liquid containers 100a each having the same liquid containing capacity, and three first liquid containing bodies 100a each having the same liquid containing capacity. A second liquid container 100b larger than the container 100a is included. Therefore, in the plurality of connection receiving portions 50, there are three first connection receiving portions 50a corresponding to the first liquid container 100a and one second connection receiving portion 50b corresponding to the second liquid container 100b. include. The first connection receiving portion 50a and the second connection receiving portion 50b are collectively referred to as the connection receiving portion 50 unless it is necessary to distinguish them. Likewise, the first liquid container 100a and the second liquid container 100b are also collectively referred to as the liquid container 100, unless they need to be distinguished from each other. In this embodiment, the first connection receiving portion 50a and the second connection receiving portion 50b have almost no substantial difference in terms of configuration for connection with the liquid container 100. FIG.

The plurality of connection receiving portions 50 are installed at the +Y-direction end of the case housing portion 60 (FIG. 3). The respective connection receiving portions 50 are arranged in a row in the X direction at the bottom of the rearmost position of the liquid ejecting apparatus 10 . Each connection receiving portion 50 is installed so as to be able to receive connection from the -Y direction side of the corresponding liquid container 100 . The three first connection receiving portions 50a are arranged in parallel from the right side at substantially equal intervals. The second connection receiving portion 50b is installed on the leftmost side.

A schematic configuration of each connection receiving unit 50 will be described with reference to FIG. FIG. 5 is a schematic perspective view showing a part of the first connection receiving portion 50a among the plurality of connection receiving portions 50. As shown in FIG. The following description is common to the first connection receiving portion 50a and the second connection receiving portion 50b unless otherwise specified. The connection receiving portion 50 is formed by integrating a liquid introduction portion 51, a device-side electrical connection portion 52, a first positioning portion 53a, a second positioning portion 53b, a device-side fixing structure 54, and a fitting structure 55. It is configured as a single part.

The liquid from the liquid container 100 flows into the liquid introduction portion 51 . In the present embodiment, the liquid introduction portion 51 is located at the +Y direction end of the case storage portion 60 . The liquid introduction part 51 is composed of a tubular part having a shape extending linearly in the -Y direction, and is open at a tip part 51t on the -Y direction side. The liquid introduction portion 51 is connected to the liquid container 100 by inserting the tip portion 51 t into the liquid container 100 . In this embodiment, the liquid introducing portion 51 protrudes in the -Y direction at approximately the center of the connection receiving portion 50 in the X direction.

A rear end portion of the liquid introducing portion 51 on the +Y direction side communicates with a pump chamber (not shown) provided inside the connection receiving portion 50 . The liquid that has flowed into the liquid introduction portion 51 flows into the pump chamber. A check valve structure (not shown) is provided inside the connection receiving portion 50 to prevent the liquid that has flowed into the pump chamber from flowing back to the liquid introducing portion 51 again.

In the connection receiving portion 50 of this embodiment, a liquid receiving portion 56 is provided below the liquid introducing portion 51 . The liquid receiving portion 56 extends in the −Y direction along the liquid introduction portion 51 . The liquid receiving portion 56 is slightly curved downward along the shape of the lower side surface of the liquid introducing portion 51, and serves as a receptacle for receiving liquid leaking from the connecting portion between the liquid introducing portion 51 and the liquid container 100. Function. The liquid receiver 56 may be omitted.

A base end member 57 is provided at the rear ends of the liquid introducing portion 51 and the liquid receiving portion 56 on the +Y direction side. The base end member 57 is a resin member having a through hole 51p through which the liquid introduction portion 51 is inserted. The base end member 57 is attached so as to be movable in the Y direction. A coiled spring, which is an urging member, is arranged on the back side of the base end member 57 so as to surround the periphery of the liquid introduction portion 51, and imparts elastic force to the base end member 57 in the -Y direction. This causes the base end member 57 to move elastically in the Y direction as indicated by the arrow SD. When the liquid container 100 is attached to the liquid ejecting apparatus 10 , a force in the −Y direction is applied to the liquid container 100 and the case 61 by the base end member 57 .

The device-side electrical connection portion 52 is a connector electrically connected to the liquid container 100 . The device-side electrical connection portion 52 is located at the +Y-direction end of the case housing portion 60 (FIG. 3). The device-side electrical connection portion 52 has a plurality of terminal portions 52t arranged in the X direction. Each terminal portion 52t protrudes from the surface of the device-side electrical connection portion 52 and contacts and is electrically connected to a container-side electrical connection portion (described later) of the liquid container 100 . Each terminal portion 52t is desirably biased in its protruding direction by an elastic member such as a plate spring. In this embodiment, the device-side electrical connection portion 52 is arranged at an inclination angle corresponding to the arrangement angle of the container-side electrical connection portion of the liquid container 100 . The device-side electrical connection portion 52 is arranged facing obliquely downward so that the normal vector of its surface has a vector component in the −Y direction and a vector component in the + Z direction.

The device-side electrical connection section 52 is connected to the control section 20 (FIG. 2) via wiring (not shown). The wiring is composed of, for example, a flexible flat cable. The controller 20 exchanges electrical signals with the liquid container 100 by electrically connecting the device-side electrical connection portion 52 and the container-side electrical connection portion. Thereby, the control unit 20 acquires information about the liquid contained in the liquid container 100 . The information about the liquid is, for example, the color of the ink, the type of ink, parameters representing the amount of liquid contained in the liquid container 100, and the like. Also, the control unit 20 electrically detects the connection state of the liquid container 100 .

The first positioning portion 53a and the second positioning portion 53b protrude at positions separated from each other. In this embodiment, the first positioning portion 53a and the second positioning portion 53b are configured as shaft-shaped portions extending in the -Y direction, and are arranged in parallel with the liquid introducing portion 51. As shown in FIG. The first positioning portion 53a is positioned on the −X direction side of the liquid introduction portion 51, and the second positioning portion 53b is positioned on the +X direction side of the liquid introduction portion 51. As shown in FIG. The first positioning portion 53a is located on the -X direction side of the device-side electrical connection portion 52. As shown in FIG. In the present embodiment, the tip positions of the first positioning portion 53a and the second positioning portion 53b are substantially aligned in the Y direction. Also, the first positioning portion 53 a and the second positioning portion 53 b are provided at substantially the same height position, and are provided at a position lower than the liquid introduction portion 51 and the device-side electrical connection portion 52 .

When the liquid container 100 is mounted, both the first positioning portion 53a and the second positioning portion 53b are inserted into corresponding receiving portions (described later) provided in the liquid container 100. As shown in FIG. The first positioning portion 53a and the second positioning portion 53b have the function of defining the arrangement position in the X direction and the arrangement angle in the horizontal direction of the liquid container 100 when the liquid container 100 is attached.

It is desirable that the first positioning portion 53a and the second positioning portion 53b protrude in the −Y direction from the tip portion 51t of the liquid introduction portion 51. As shown in FIG. Accordingly, the liquid introduction portion 51 can be connected to the liquid container 100 after the mounting posture of the liquid container 100 is defined by the pair of positioning portions 53a and 53b. It is desirable that groove portions 53g extending in parallel in the Y direction are provided on the outer peripheral side surfaces of the respective positioning portions 53a and 53b, as shown in the figure. This facilitates the insertion of the liquid container 100 into the receiving portion.

The device-side fixing structure 54 cooperates with a case-side fixing structure (described later) provided on the case 61 in which the liquid container 100 is arranged to restrict movement of the case 61 in the Y direction.

In this embodiment, the device-side fixing structure 54 extends in the -Y direction so that it can enter the lower side of the liquid container 100 to which it is attached. The device-side fixing structure 54 is configured as an arm-shaped member. The device-side fixing structure 54 is positioned on the -X direction side of the liquid introduction portion 51 and is positioned below the device-side electrical connection portion 52 . A tip portion 54t on the -Y direction side of the device-side fixing structure 54 protrudes in the -Y direction side more than a tip portion 51t of the liquid introduction portion 51. As shown in FIG. The tip portion 54t protrudes in the -Y direction from the tip portions of the positioning portions 53a and 53b. A protruding portion 54p is provided on the tip portion 54t. The protrusion 54p protrudes in the -Z direction at the center of the tip 54t. The projecting portion 54p engages with the engaged portion provided on the case-side fixing structure in the case housed state in which the case 61 is attached to the case housing portion 60 . In the following description, the projecting portion 54p may also be referred to as the "engaging portion 54p". Movement of the case 61 in the -Y direction is restricted by engaging the projecting portion 54p with the engaged portion provided on the case-side fixing structure.

The device-side fixing structure 54 is attached in a state in which it is allowed to rotate in the lateral direction with the rear end portion on the +Y direction side as a fulcrum, as indicated by the double-headed arrow EX. The device-side fixing structure 54 is biased in the +X direction by an elastic member (not shown) arranged inside the connection receiving portion 50, and is elastic in the -X direction when receiving an external force in the -X direction. rotates. In addition, as indicated by the double arrow EZ, the device-side fixing structure 54 is attached in a state in which it is allowed to rotate in the height direction with the rear end portion on the +Y direction side as a fulcrum. The device-side fixing structure 54 is biased in the -Z direction by an elastic member (not shown) arranged inside the connection receiving portion 50, and is elastically moved in the +Z direction when receiving an external force in the +Z direction. Rotate. The mechanism of engagement between the device-side fixing structure 54 and the case-side fixing structure of the case 61 will be described later.

The fitting structure 55 is provided on the +X direction side of the liquid introducing portion 51 . The fitting structure 55 is positioned above the second positioning portion 53b, protrudes in the +Z direction at the same height, and has a plurality of substantially rectangular protrusions 55c extending in parallel in the -Y direction. It has an uneven structure. The arrangement pattern of the protrusions 55 c in the concave-convex structure of the fitting structure 55 differs for each connection receiving portion 50 . The liquid container 100 corresponding to each connection receiving portion 50 is provided with a fitting structure receiving portion (described later) having a concave-convex structure that can be fitted corresponding to the arrangement pattern of the concave-convex structure. This prevents the wrong liquid container 100 that is not compatible from being connected to the connection receiving portion 50 .

[Supply piping and fittings]
The plurality of supply pipes 42 are configured by flexible resin tube members (FIG. 4). Each supply pipe 42 is connected to the above-described pump chamber (not shown) provided inside each connection receiving portion 50, one by one. Each of the supply pipes 42 passes from the connection receiving portion 50 above the area where the liquid container 100 is accommodated, is collected at the end on the -X direction side, and is routed in parallel in the -Y direction ( 3 and 4). Then, it is drawn around in the −Z direction at the front end portion of the liquid ejecting device 10 and connected to a joint portion 43 installed at a position higher than the medium transport portion 35 (FIGS. 2 and 4). ). As described above, each supply pipe 42 is connected to a corresponding one of the plurality of tubes 32 of the injection executing section 30 via the joint section 43 .

[Liquid Suction/Delivery Mechanism in Liquid Supply Portion]
The fluctuating pressure generator 45 is a source that generates pressure fluctuations for sucking and delivering liquid, and is configured by, for example, a pump (FIGS. 2 and 3). The fluctuating pressure generating section 45 is installed above the case housing section 60 at a position closer to the front section 12 of the liquid ejecting apparatus 10 . The fluctuating pressure generator 45 is located above the mounting position of the first liquid container 100a. The pressure transmission pipe 46 is connected to the pressure fluctuation generator 45 and transmits the pressure fluctuation generated by the pressure fluctuation generator 45 . The pressure transmission pipe 46 is connected to a pressure chamber (not shown) provided inside each connection receiving portion 50 .

The pressure chamber of each connection receiving portion 50 is adjacent to the above-described pump chamber into which the liquid flows from the liquid container 100 with the flexible membrane interposed therebetween. Therefore, when the fluctuating pressure generating section 45 reduces the pressure in the pressure chamber, the flexible membrane bends toward the pressure chamber, the volume of the pump chamber increases, and the liquid in the liquid container 100 flows through the liquid introduction section 51. is sucked into the pump chamber. On the other hand, when the fluctuating pressure generating unit 45 increases the pressure in the pressure chamber, the flexible membrane bends toward the pump chamber, the volume of the pump chamber decreases, and the liquid that has flowed into the pump chamber is displaced from the supply pipe 42 . pushed into. In this way, in the liquid supply section 40, the liquid is supplied to the injection execution section 30 by the fluctuation pressure generation section 45 repeating the rise and fall of the pressure in the pressure chamber.

[Case storage part]
In the liquid ejecting apparatus 10 of the present embodiment, the case housing portion 60 is provided at the bottom (FIGS. 2 and 3). A plurality of cases 61 are housed in the case housing portion 60 . When in the above-described case housed state, the plurality of cases 61 are arranged in a row in the X direction in the case housing portion 60 . A plurality of liquid containers 100 are arranged in each of the plurality of cases 61 . One liquid container 100 is arranged in one case 61 . That is, in the case storage portion 60 , a plurality of liquid containers 100 are stored in a row in the X direction while being arranged in the case 61 . In FIG. 2, since the liquid container 100 is hidden behind the case 61 and cannot be seen, the position of the liquid container 100 is marked with a dashed line. In addition, in FIG. 3 , an arrangement area LA, which is the arrangement position of the case 61 and the liquid container 100 in the case housing portion 60 when mounted, is indicated by a dashed line.

In the case housing portion 60, the second liquid container 100b is housed in the +X direction end, and the three first liquid containers 100a are housed in the -X direction side (FIG. 2). One corresponding connection receiving portion 50 is installed on the +Y direction side of the arrangement area LA of each liquid container 100 (FIG. 3). As described above, in this embodiment, the liquid container 100 contains different color inks. The combination of color inks contained in each liquid container 100 is not particularly limited. For example, the three first liquid containers 100a may contain cyan, magenta, and yellow, respectively, and the second liquid container 100b may contain black, which is expected to be consumed the most. . Part or all of the liquid container 100 may contain the same color ink.

A plurality of cases 61 are used for mounting the liquid container 100 . In this embodiment, the case 61 is configured as a tray-like container. The case 61 can be attached to and detached from the liquid ejecting apparatus 10 by moving it in the Y direction in the case housing portion 60 . Details of attachment and detachment of the case 61 and the liquid container 100 with respect to the liquid ejecting apparatus 10 will be described later.

The liquid container 100 is detachably arranged on the −Z direction side of the case 61 pulled out from the case storage portion 60 . The liquid container 100 is attached to the liquid ejection device 10 while being arranged in the case 61 . That is, the liquid container 100 is attached to the case storage portion 60 of the liquid ejecting apparatus 10 while being arranged in the case 61 . Further, the liquid container 100 is taken out from the case housing portion 60 while being arranged in the case 61 . The case 61 includes a first case 61a in which the first liquid container 100a is arranged and a second case 61b in which the second liquid container 100b is arranged. The first case 61a and the second case 61b will be collectively referred to as the case 61 unless otherwise specified. Details of the configuration of the case 61 will be described later.

The case housing portion 60 has an opening member 62 (FIG. 2). The opening member 62 is a plate-like member having a substantially rectangular shape, and has four through holes 63 penetrating in the thickness direction. The opening member 62 is fixedly installed at the end of the case housing portion 60 on the -Y direction side, with its thickness direction aligned with the Y direction and its longitudinal direction aligned with the X direction. Each through hole 63 is an insertion opening through which the case 61 is inserted. Each through-hole 63 has an opening shape corresponding to the contour shape of the outer periphery when the corresponding case 61 is viewed in the Y direction. The opening member 62 guides insertion and withdrawal of the case 61 into the liquid ejecting apparatus 10 . In addition, the user is prevented from inserting the first case 61a and the second case 61b into wrong places. Note that the opening member 62 may be omitted.

A plurality of rail grooves 64 are formed in the floor surface of the case housing portion 60 ( FIG. 3 ). Each rail groove 64 is formed linearly over the entire area of the case housing portion 60 in the Y direction for each arrangement area LA of each liquid container 100 . A rail rib (described later) provided on the lower surface of the case 61 is fitted into each rail groove 64 . The rail groove 64 guides the movement of the case 61 in the Y direction inside the liquid ejecting apparatus 10 and suppresses contact between the cases 61 adjacent in the X direction. Also, connection of the liquid container 100 to the connection receiving portion 50 is simplified. The configuration of the rail grooves 64 and the corresponding rail ribs may be different for each case 61 in order to prevent erroneous mounting. Also, part or all of the rail groove 64 may be omitted.

A plurality of rollers 65 are installed on the floor of the case housing portion 60 ( FIG. 3 ). The rollers 65 are appropriately dispersed and arranged in the Y direction for each arrangement area LA of each liquid container 100 . In the case housing portion 60, the rotation of each roller 65 reduces movement resistance when the case 61 is moved in the Y direction, thereby facilitating the movement operation of the case 61 by the user. Rollers 65 may be omitted.

[Structure of liquid container and case]
The configurations of the first liquid container 100a and the first case 61a will be described with reference to FIGS. 6 to 12 as appropriate. After that, the configurations of the second liquid container 100b and the second case 61b will be described with reference to FIGS. 13 to 18. FIG.

[First liquid container and first case]
FIG. 6 is a schematic perspective view showing the first liquid container 100a arranged in the first case 61a. FIG. 7 is a first schematic exploded perspective view showing a state in which the first liquid container 100a is removed from the first case 61a, and is a view when viewed from the +Y direction side. FIG. 8 is a second schematic exploded perspective view showing a state in which the first liquid container 100a is removed from the first case 61a, viewed from the -Y direction side. 7 and 8, arrows X, Y, and Z respectively corresponding to the first liquid container 100a and the first case 61a are shown separately. First, the schematic configuration of the first liquid container 100a will be described below, and the schematic configuration of the first case 61a will be described.

[First liquid container]
The first liquid container 100a is an ink pack, and includes a container portion 110a and a connection member 120a (FIGS. 7 and 8). When viewed in the Z direction, the first liquid container 100a has a substantially rectangular outer contour shape with the Y direction as the longitudinal direction. The connection member 120a constitutes the +Y direction end portion of the first liquid container 100a, and the containing portion 110a is positioned on the -Y direction side of the connection member 120a.

The width in the Z direction of the first liquid container 100a is smaller than the width in the X direction and the width in the Y direction. The "width" means the distance in each direction between the outermost portions of the first liquid container 100a. That is, the first liquid container 100a has a thin flat plate shape. Therefore, according to the first liquid container 100a, it is possible to obtain a high degree of stability in the arrangement posture on the first case 61a (FIG. 6).

[Accommodation part]
The storage portion 110a is a member that stores liquid (FIGS. 7 and 8). In this embodiment, the housing portion 110a is configured as a flexible bag-like member. The accommodating portion 110a has a substantially rectangular shape with the Y direction as the longitudinal direction when viewed in the Z direction. The housing portion 110a is constructed by stacking two sheet members 111 and 112 and welding their outer peripheral ends 113 together.

The first sheet member 111 is arranged on the -Z direction side and constitutes the upper surface of the housing portion 110a. The second sheet member 112 is arranged on the +Z direction side and constitutes the lower surface of the housing portion 110a. Each sheet member 111, 112 has a rectangular shape with the same size. Each sheet member 111, 112 may not have a completely flat shape. Each of the sheet members 111 and 112 may have a bent shape such that a bulge is gradually formed toward the center of the accommodating portion 110a. Further, a skeleton member for retaining the shape of the accommodation portion 110a may be accommodated inside the accommodation portion 110a.

Each sheet member 111, 112 is made of a material having flexibility, gas barrier properties, and liquid impermeability. Each sheet member 111, 112 may be made of a film member such as polyethylene terephthalate (PET), nylon, polyethylene, or the like. Each of the sheet members 111 and 112 may be configured by laminating a plurality of films made of the above materials. In this case, for example, the outer layer may be formed of a PET or nylon film having excellent impact resistance, and the inner layer may be formed of a polyethylene film having excellent ink resistance. Furthermore, a layer of deposited aluminum or the like may be added to the laminated structure.

[Connection member]
The configuration of the connection member 120a will be described with reference to FIGS. 9A and 9B. 9A is a schematic perspective view showing the vicinity of the connection member 120a extracted from FIG. 7. FIG. FIG. 9B is a schematic perspective view extracting and showing the vicinity of the container-side electrical connection portion 140. FIG.

The connecting member 120a is attached to the +Y-direction end of the accommodating portion 110a (FIGS. 7 to 9A). The connection member 120a generally has a substantially rectangular parallelepiped shape with the X direction as the longitudinal direction. The width of the connection member 120a in the X direction is slightly smaller than the width of the accommodating portion 110a in the X direction. The difference may be, for example, several millimeters to ten and several millimeters. The main body of the connection member 120a is made by molding a resin member such as polypropylene, for example.

The connection member 120 a has a first surface portion 121 , a second surface portion 122 , a third surface portion 123 , a fourth surface portion 124 , a fifth surface portion 125 and a sixth surface portion 126 . In this specification, the "surface portion" may not be configured in a planar shape, may be configured in a curved shape, and has a concave portion, a convex portion, a step, a groove, a bent portion, an inclined surface, etc. may be In addition, two surface portions "intersect" means a state in which the two surface portions actually intersect with each other, a state in which an extended surface of one surface portion intersects with the other surface portion, and a state in which the extended surfaces of the two surface portions intersect with each other. It means that it is in either state of crossing. Therefore, a chamfered portion or the like forming a curved surface may be interposed between adjacent surface portions.

The first surface portion 121 faces the +Y direction and constitutes the front surface portion of the connection member 120a (FIGS. 7 and 9A). The second surface portion 122 is located opposite the first surface portion 121 and faces the -Y direction. The second surface portion 122 constitutes the rear surface portion of the connecting member 120a (FIG. 8).

The third surface portion 123 intersects the first surface portion 121 and the second surface portion 122 and faces the -Z direction (FIGS. 7 and 9A). The third surface portion 123 constitutes the upper surface portion of the connecting member 120a. The fourth surface portion 124 is located opposite the third surface portion 123 and intersects the first surface portion 121 and the second surface portion 122 (FIG. 8). The fourth surface portion 124 is a surface portion on the +Z direction side, faces the +Z direction, and constitutes the bottom portion of the connection member 120a.

The fifth surface portion 125 intersects the first surface portion 121, the second surface portion 122, the third surface portion 123, and the fourth surface portion 124 (FIGS. 7 and 9A). The fifth surface portion 125 faces the +X direction and constitutes the left side surface portion of the connection member 120a. The sixth surface portion 126 is located opposite the fifth surface portion 125 and intersects the first surface portion 121, the second surface portion 122, the third surface portion 123, and the fourth surface portion 124 (FIG. 8). The sixth surface portion 126 faces the -X direction and constitutes the right side surface portion of the connection member 120a.

A linear slit 128 is formed over the entire area in the X direction in the fourth surface portion 124 of the connection member 120a (FIG. 8). The slit 128 is formed approximately in the center of the connecting member 120a in the Z direction. The accommodation portion 110a is fixed to the connection member 120a in a state in which the outer peripheral end portion 113 on the +Y direction side is inserted into the slit 128 and sandwiched in the thickness direction.

The connecting member 120a is fitted with a liquid outlet 131, a container-side electrical connection 140, a first receiving portion 150a, a second receiving portion 150b, and the like as components for connecting to the first connection receiving portion 50a. A mating structure receiving portion 155 is provided (FIGS. 7 and 9A). In the connection member 120a, those constituent elements are put together on the first surface portion 121 side. In the following, after sequentially describing these constituent elements, other configurations provided in the connection member 120a will be described.

[Liquid outlet]
The liquid outlet 131 is an opening that opens in the +Y direction (FIG. 9A). The liquid introduction portion 51 (FIG. 5) of the first connection receiving portion 50a is inserted into the liquid outlet port 131 in the +Y direction. The liquid outlet 131 is provided at a substantially central position in the X direction on the first surface portion 121 . The liquid outlet port 131 is formed at substantially the same height position as the housing portion 110a is fixed.

The liquid outlet 131 is a channel (not shown) provided inside the connection member 120a, or a channel member (not shown) connected to the fourth surface portion 124 side of the connection member 120a and accommodated inside the accommodation portion 110a. (illustration omitted), it communicates with the liquid containing area inside the containing portion 110a. A detailed description of the configuration of such liquid flow paths is omitted. In order to prevent the liquid from leaking, the connection member 120a is kept closed before the liquid introduction part 51 is inserted into the liquid outlet 131, and closed when the liquid introduction part 51 is inserted. A valve structure and a seal structure that open to the outside are provided (not shown).

In this embodiment, the entire peripheral portion 132 of the liquid outlet 131 is recessed in the -Y direction on the first surface portion 121, and the liquid outlet 131 opens at a recessed position in the -Y direction. As a result, the liquid outlet 131 is surrounded by the wall portion formed by the peripheral portion 132, and the protection of the liquid outlet 131 is enhanced. 131 is prevented from being accidentally touched. Further, deterioration such as damage and deformation due to collision of the liquid outlet 131 when the first liquid container 100a is accidentally dropped is suppressed.

In this embodiment, the peripheral edge portion 132 of the liquid outlet 131 is surrounded by peripheral edge ribs 133 protruding in the +Y direction. When the liquid introduction portion 51 of the first connection receiving portion 50a is connected to the liquid outlet port 131, the peripheral rib 133 contacts and is pushed by the base end member 57 provided around the liquid introduction portion 51, - receive elastic force in the Y direction; In addition, in the mounting state where the first liquid container 100a is mounted on the liquid ejecting apparatus 10, the first case 61a in which the first liquid container 100a is arranged is engaged with the first connection receiving portion 50a. (described later). Therefore, even if the peripheral rib 133 is urged in the -Y direction by the base end member 57, the first liquid container 100a and the first case 61a are prevented from moving in the -Y direction from the arrangement area LA. .

[Container side electrical connection]
The container-side electrical connection section 140 includes a substrate section 141 for connection to the device-side electrical connection section 52 (FIGS. 9A and 9B). The container-side electrical connection portion 140 makes electrical contact with the device-side electrical connection portion 52 (FIG. 5) of the first connection receiving portion 50a. A plurality of terminal portions 142 are arranged on the surface 141 s of the substrate portion 141 . The plurality of terminal portions 142 are arranged at positions corresponding to the terminal portions 52 t of the device-side electrical connection portion 52 . The surface of the substrate portion 141 opposite to the surface 141s may be provided with a storage device for storing information about the liquid, a circuit for detecting connection of the device-side electrical connection portion 52, and the like (illustration and detailed description omitted).

In this embodiment, each terminal portion 142 has a substantially flat contact surface with which the terminal portion 52t of the device-side electrical connection portion 52 contacts. In FIG. 9B, the position of the contact portion CP of each terminal portion 142 with which the terminal portion 52t of the device-side electrical connection portion 52 contacts is illustrated by a dashed line. The contact portions CP of the respective terminal portions 142 are arranged in the arrangement direction parallel to the X direction on each of the upper and lower stages on the surface 141s of the substrate portion 141 . Note that the arrangement pattern of the terminal portions 142 and the contact portions CP is not limited to that illustrated in FIG. 9B.

In this embodiment, the container-side electrical connection portion 140 is provided at a position near the end of the connection member 120a on the -X direction side. The connection member 120a is formed with a substrate arrangement portion 144 for arranging the substrate portion 141 of the container-side electrical connection portion 140 as a recess recessed in the -Y direction and the +Z direction. The substrate placement portion 144 is formed with an inclined surface 144s that faces obliquely upward between the +Y direction and the −Z direction. It is obliquely arranged at an arrangement angle substantially parallel to the surface 144s. That is, the normal vector of the contact surface between the surface 141s of the substrate portion 141 and the terminal portion 52t has a vector component in the +Y direction and a vector component in the -Z direction.

Thus, the substrate portion 141 is arranged so that the surface 141s faces the -Z direction side. Therefore, when the device-side electrical connection portion 52 is electrically connected, the container-side electrical connection portion 140 receives at least a downward force in the +Z direction from the device-side electrical connection portion 52 , while the device-side electrical connection portion 52 will be in electrical contact with This downward force improves the contact state between the container-side electrical connection portion 140 and the device-side electrical connection portion 52, and enhances the electrical connectivity of the container-side electrical connection portion 140. FIG.

Further, in the present embodiment, the substrate portion 141 is inclined as described above, and the surface 141s faces the +Y direction. Therefore, when moving the first liquid container 100a together with the first case 61a in the +Y direction to connect the container-side electrical connection portion 140 to the apparatus-side electrical connection portion 52, the first case 61a is moved in the +Y direction. The electrical connection state between the container-side electrical connection portion 140 and the device-side electrical connection portion 52 can be formed by utilizing the force when the two are pressed. Therefore, electrical connectivity between the container-side electrical connection portion 140 and the device-side electrical connection portion 52 is enhanced.

Further, when connecting to the device-side electrical connection portion 52 , the terminal portion 52 t of the device-side electrical connection portion 52 moves while rubbing the contact surface of the terminal portion 142 of the container-side electrical connection portion 140 . As a result, foreign matter adhering to the contact surface of the terminal portion 142 of the container-side electrical connection portion 140 is removed by the terminal portion 52t of the apparatus-side electrical connection portion 52, so that the electrical connectivity of the container-side electrical connection portion 140 is improved. is further enhanced.

In addition, when the first liquid container 100a is taken out of the case housing portion 60 together with the first case 61a, the -Y-direction force received from the device-side electrical connection portion 52 causes the first liquid container 100a to move. Movement in the Y direction is assisted. Therefore, taking out the first liquid container 100a is simplified.

The substrate portion 141 is installed at a recessed position of the substrate placement portion 144 . The substrate portion 141 is sandwiched between two wall portions 145 projecting in the −Z direction and the +Y direction from the surface 141s of the substrate portion 141 on both sides thereof in the X direction. These wall portions 145 function as protection portions for the substrate portion 141 . Therefore, for example, it is possible to prevent the substrate section 141 from being damaged when the user accidentally touches the substrate section 141 or when the first liquid container 100a is accidentally dropped.

[First Receiving Section and Second Receiving Section]
When the first liquid container 100a is attached to the liquid ejection device 10, the first receiving portion 150a receives the first positioning portion 53a (FIG. 5) of the first connection receiving portion 50a, and the second receiving portion 150b It receives the second positioning portion 53b (FIG. 5). This appropriately defines the mounting position of the first liquid container 100a.

In this embodiment, the first receiving portion 150a and the second receiving portion 150b are formed as holes extending in the -Y direction and have a first opening 151a and a second opening 151b, respectively. The openings 151a and 151b of the first receiving portion 150a and the second receiving portion 150b receive insertion of the corresponding positioning portions 53a and 53b from the +Y direction side. In this embodiment, the first opening 151a of the first receiving portion 150a and the second opening 151b of the second receiving portion 150b have different opening shapes, the details of which will be described later.

The first receiving portion 150a is located on the −X direction side of the liquid outlet 131. As shown in FIG. In the first liquid container 100a, the first receiving portion 150a is provided at the lower corner of the first surface portion 121 on the -X direction side. On the other hand, the second receiving portion 150b is positioned on the +X direction side of the liquid outlet port 131 . In the first liquid container 100a, the second receiving portion 150b is provided at the lower corner of the first surface portion 121 on the +X direction side.

In this embodiment, the liquid outlet 131 is sandwiched in the X direction by a pair of receiving portions 150a and 150b. As a result, when the first liquid container 100a is attached to the liquid ejecting apparatus 10, the positioning accuracy in the X direction of the liquid outlet 131 with respect to the liquid inlet 51 (FIG. 5) is enhanced. Therefore, connectivity between the liquid introduction part 51 and the liquid outlet 131 is improved. Further, in the present embodiment, the distance between the pair of receiving portions 150a and 150b in the X direction is large, so the positioning accuracy is further enhanced.

[Mating structure receiving part]
The fitting structure receiving portion 155 is provided on the +X direction side of the liquid outlet 131 . The fitting structure receiving portion 155 is provided at the +Y-direction end of the third surface portion 123 at a position closer to the +X-direction end. The fitting structure receiving portion 155 has an uneven structure in which a plurality of substantially rectangular protrusions 156 are arranged so as to protrude in the -Z direction at the same height and extend in parallel in the -Y direction. The arrangement pattern in the X direction of the projections 156 in the fitting structure receiving portion 155 and the valleys 157, which are recesses formed therebetween, is opposite to the arrangement pattern of the uneven structure of the fitting structure 55 to be connected. It's becoming

When the first liquid container 100a is moved in the +Y direction and connected to the corresponding first connection receiving portion 50a, the fitting between the concave-convex structure of the fitting structure 55 and the concave-convex structure of the fitting structure receiving portion 155 is allowed. be done. On the other hand, when the combination of the first liquid container 100a and the first connection receiving portion 50a is not appropriate, the concave-convex structure of the fitting structure 55 does not match the concave-convex structure of the fitting structure receiving portion 155 and is fitted. I can't. Therefore, the wrong first liquid container 100a that does not correspond is prevented from being connected to the first connection receiving portion 50a.

[Other Configurations of Connection Member]
[Recess]
The fourth surface portion 124 of the connection member 120a is provided with a recess 160 that is recessed in the -Z direction. In this embodiment, the concave portion 160 has a substantially rectangular shape, extends in the +Y direction to the first surface portion 121, and opens in the +Y direction. When the first liquid container 100a is arranged in the first case 61a, the concave portion 160 accommodates a convex portion (described later) formed on the first liquid container 100a. The recessed portion 160 is formed at a position overlapping at least a portion of the container-side electrical connection portion 140 when viewed in the Z direction. The reason for this will be described later.

[Mating recess]
A pair of fitting recesses 161 is formed in the fourth surface portion 124 of the connection member 120a. In this embodiment, each fitting recess 161 is formed as a recess cut in the -Z direction. Each fitting recess 161 opens in the +Y direction on the first surface portion 121 in the same manner as the recess 160 described above. The two fitting recesses 161 are arranged so as to sandwich the liquid outlet 131 in the X direction. The two fitting recesses 161 are respectively formed at positions adjacent to the peripheral edge portion 132 of the liquid outlet 131 in the X direction. When the first liquid container 100a is arranged in the first case 61a, a corresponding fitting projection (described later) is inserted into each fitting recess 161 and fitted. This positions the liquid outlet 131 in the X direction with respect to the first case 61a.

[First case]
Please refer to FIGS. The first case 61a has a substantially rectangular parallelepiped shape whose longitudinal direction is the X direction. Also, the first case 61a is formed as a hollow box that is open in the -Z direction and the +Y direction. The first case 61a is made of, for example, a resin member such as polypropylene.

The first case 61a includes a bottom wall portion 200, two side wall portions 201 and 202, a lid member 203, and a front wall portion 205 (FIGS. 7 and 8). The bottom wall portion 200 is a substantially rectangular wall portion forming the bottom portion of the first case 61a, and extends in the X direction and the Y direction. As used herein, "extending" means a configuration that extends continuously in a certain direction. The first liquid container 100a is arranged on the bottom wall portion 200 (FIG. 6). The bottom wall portion 200 has a size that accommodates at least the entire containing portion 110a when the first liquid container 100a is arranged.

The first side wall portion 201 is a substantially rectangular wall portion that intersects and is connected to the long side on the −X direction side of the bottom wall portion 200, and constitutes the right side wall portion of the first case 61a. (Fig. 8). The second side wall portion 202 is a substantially rectangular wall portion that intersects and is connected to the long side of the bottom wall portion 200 on the +X direction side, and constitutes the left side wall portion of the first case 61a ( Figure 7). The first side wall portion 201 and the second side wall portion 202 extend parallel to each other over substantially the entire area in the Y direction. The heights of the first side wall portion 201 and the second side wall portion 202 substantially match the height of the connection member 120a of the first liquid container 100a (FIG. 6). The first side wall portion 201 and the second side wall portion 202 sandwich the containing portion 110a of the first liquid container 100a in the X direction and define the arrangement angle of the containing portion 110a in the direction along the horizontal plane.

An engagement convex portion 201t that protrudes in the +X direction is provided at the +Y direction end of the first side wall portion 201 (FIG. 7). An engagement projection 202t that protrudes in the -X direction is also provided at the end of the second side wall 202 on the +Y direction side. When the first liquid container 100a is placed in the first case 61a, the engagement projection 201t of the first side wall portion 201 engages with the recess of the sixth surface portion 126 of the connection member 120a, and the second side wall portion 202 The engaging projection 202t engages with the recess of the fifth surface portion 125 of the connecting member 120a (FIG. 6).

The lid member 203 spans over the first side wall portion 201 and the second side wall portion 202 at the end on the -Y direction side (FIG. 7). When the first liquid container 100a is placed in the first case 61a, the lid member 203 partially covers the −Y direction end portion of the container 110a (FIG. 6). The lid member 203 prevents the −Y direction end of the housing portion 110a from floating in the −Z direction. In this embodiment, the lid member 203 is configured to be detachable from the main body of the first case 61a.

FIG. 10A is a schematic perspective view showing the surface of the lid member 203 on the −Z direction side. FIG. 10B is a schematic perspective view showing the surface of the lid member 203 on the +Z direction side. A plurality of claw portions 203t are provided on the outer peripheral edge of the lid member 203 (FIGS. 10A and 10B). Each claw portion 203t protrudes in the +Z direction and engages with a recess (not shown) provided in the first side wall portion 201 or the second side wall portion 202 . A recessed portion 204 recessed in the +Z direction is formed on the surface of the lid member 203 on the −Z direction side. A user can hook his/her finger in this recess 204 when putting the first case 61 a of the liquid ejecting device 10 into and out of the case housing portion 60 .

FIG. 11 is a schematic diagram showing the front wall portion 205. As shown in FIG. The front wall portion 205 is a wall portion having a substantially rectangular shape that intersects with the bottom wall portion 200, the first side wall portion 201, and the second side wall portion 202 at the end on the -Y direction side. An upper end portion of the front wall portion 205 is configured by a lid member 203 . When the first case 61a with the first liquid container 100a arranged therein is viewed in the Y direction, the entire first liquid container 100a is covered with the front wall portion 205. As shown in FIG.

6 to 8, 11 and 12, other components provided on the bottom wall portion 200 will be described. A pair of claw-like fitting protrusions 207 protruding in parallel in the -Z direction is provided at the end of the bottom wall portion 200 on the +Y direction side (FIG. 7). Each fitting protrusion 207 is provided apart from each other in the X direction at the central portion in the X direction. When the first liquid container 100a is arranged in the first case 61a, each of the fitting projections 207 is inserted and fitted into the corresponding one of the fitting recesses 161 (FIG. 6).

A protrusion 210 protruding in the −Z direction is further provided at the end of the bottom wall portion 200 on the +Y direction side (FIG. 7). The convex portion 210 is positioned closer to the −X direction side than the central portion in the X direction, and is positioned closer to the −X direction side than the pair of fitting convex portions 207 . In this embodiment, the convex portion 210 is rectangular. The convex portion 210 is formed hollow. The internal space 211 of the convex portion 210 will be described later. When the first liquid container 100a is placed in the first case 61a, the projections 210 are housed in the recesses 160 of the connection member 120a (FIG. 6).

In this embodiment, when the projection 210 is accommodated in the recess 160, the outer wall surface of the projection 210 and the inner wall surface of the recess 160 are in surface contact. That is, the convex portion 210 fits into the concave portion 160 . Therefore, in the present embodiment, the convex portion 210 and the concave portion 160 function as positioning portions for the connection member 120a in the first case 61a.

A plurality of linear thin grooves 213 extending in the Y direction are arranged in parallel in the X direction on the −Z direction side surface of the bottom wall portion 200 . The thin groove portion 213 guides the movement of the storage portion 110a of the first liquid storage body 100a when it is slid on the surface of the bottom wall portion 200 in the Y direction.

The corner portion between the bottom wall portion 200 and the first side wall portion 201 and the corner portion between the bottom wall portion 200 and the second side wall portion 202 are stepped in the -Z direction. A stepped portion 214 is provided (FIGS. 7 and 8). When the first liquid container 100a is placed in the first case 61a, the stepped portion 214 supports the outer peripheral end portion 113 of the container portion 110a from below. Therefore, the arrangement posture of the housing portion 110a on the first case 61a is stabilized.

In this embodiment, the first liquid container 100a is only fixed in position on the first case 61a by the connection member 120a. The housing portion 110a is not substantially restrained by the first case 61a except that the upper portion thereof is covered with the lid member 203. As shown in FIG. In other words, the accommodating portion 110a is arranged in a state in which movement in the direction away from the first case 61a is allowed except for the +Y direction end portion connected to the connecting member 120a. In this way, since the first liquid container 100a is not constrained to the first case 61a in vain, attaching and detaching the first liquid container 100a to and from the first case 61a is simplified.

With reference to FIG. 12, the configuration of the lower surface side of the bottom wall portion 200 will be described. FIG. 12 is a schematic perspective view of the first case 61a when viewed from the +Z direction side. A groove portion 215 is provided at the +Y direction end portion of the +Z direction side surface of the bottom wall portion 200 . In this embodiment, the grooves 215 are formed by being surrounded by ribs 216 . The groove portion 215 constitutes a case-side fixing structure 220 . The end portion of the groove portion 215 on the +Y direction side is configured by the internal space 211 of the convex portion 210 described above. In other words, the internal space 211 of the protrusion 210 forms part of the case-side fixing structure 220 and is included in the case-side fixing structure 220 . An internal space 211 of the projection 210 is open in the +Y direction and constitutes an entrance of a groove 215 (case-side fixing structure 220).

As described above, the case-side fixing structure 220 cooperates with the device-side fixing structure 54 to restrict movement of the first case 61a in the Y direction. In the case-side fixing structure 220, when the first case 61a is arranged in the predetermined arrangement area LA (FIG. 3) of the case-side fixing structure 60, the protrusion 54p (FIG. 5) of the apparatus-side fixing structure 54 (FIG. An engaged portion (to be described later) that engages with the engaging portion 54p) is provided. The movement of the first case 61a in the -Y direction is restricted by locking the protrusion 54p to the engaged portion. In this embodiment, the groove portion 215 forming the case-side fixing structure 220 is configured to have a heart-cam groove structure, which is a loop-shaped groove structure to be described later. The configuration of the case-side fixing structure 220 and the engagement mechanism between the engaged portion of the case-side fixing structure 220 and the protrusion 54p (engaging portion 54p) of the device-side fixing structure 54 will be described later.

A plurality of rail ribs 230 and a plurality of leg portions 231 are further provided on the +Z direction side surface of the bottom wall portion 200 . The rail rib 230 is configured as a convex wall portion that protrudes in the +Z direction (FIG. 11), and extends linearly with a substantially constant width in the Y direction (FIG. 12). As described above, the rail ribs 230 are fitted into the rail grooves 64 provided on the floor surface of the case housing portion 60 and guide the movement of the first case 61a in the Y direction. The plurality of legs 231 protrude in the +Z direction and have the same height (FIG. 11). The plurality of legs 231 properly hold the first case 61a in the placement posture in the placement area LA ( FIG. 3 ) of the case housing portion 60 .

[Second liquid container and second case]
First, the schematic configuration of the second liquid container 100b will be described below, and the schematic configuration of the second case 61b will be described. In the following description and reference drawings, the same reference numerals or only alphabetic characters at the end of the components that are the same as or correspond to the various components of the first liquid container 100a and the first case 61a described above. are different and numbers are used in common. Those components with corresponding reference numerals have the same functions in the second liquid container 100b or the second case 61b as the corresponding components in the first liquid container 100a or the first case 61a. Play. Therefore, the various effects described above for the first liquid container 100a and the first case 61a can also be obtained for the second liquid container 100b and the second case 61b through such corresponding configurations.

Please refer to FIGS. 13-18. FIG. 13 is a schematic perspective view showing the second liquid container 100b arranged in the second case 61b. FIG. 14 is a first schematic exploded perspective view showing a state in which the second liquid container 100b is taken out from the second case 61b, and is a view when viewed from the tip side in the +Y direction. FIG. 15 is a second schematic exploded perspective view showing a state in which the second liquid container 100b is removed from the second case 61b, and is a view when viewed from the rear end side in the -Y direction. 14 and 15, arrows X, Y, and Z corresponding to the second liquid container 100b and the second case 61b are shown separately. FIG. 16 is a schematic diagram of the second liquid container 100b arranged in the second case 61b when viewed in the -Y direction. For comparison, the lower part of FIG. 16 shows the first liquid container 100a arranged in the first case 61a when viewed in the same direction. In FIG. 16, the central axis CL in the X direction of each of the first liquid container 100a and the second liquid container 100b is illustrated by a dashed line. FIG. 17 is a schematic diagram of the front wall portion 205 of the second case 61b viewed in the +Y direction. FIG. 18 is a schematic perspective view showing the configuration of the bottom surface side of the bottom wall portion 200 of the second case 61b, and is a view of the second case 61b when viewed from the +Z direction side.

[Second liquid container]
The second liquid container 100b has substantially the same configuration as the first liquid container 100a except for the points described below (FIGS. 14 and 15). The width in the X direction of the second liquid container 100b is larger than that of the first liquid container 100a so that the amount of liquid that can be contained therein is larger than that of the first liquid container 100a.

Like the first liquid container 100a, the second liquid container 100b includes a container portion 110b and a connecting member 120b (FIGS. 14 and 15). The storage portion 110b of the second liquid storage body 100b has substantially the same configuration as the storage portion 110a of the first liquid storage body 100a, except that the width in the X direction is large.

The connection member 120b of the second liquid container 100b has substantially the same configuration as the connection member 120a of the first liquid container 100a, except that a pair of side end support portions 162 are added. Each side end support part 162 protrudes in the +X direction or the -X direction at the -Y direction end of the main body having a shape substantially similar to that of the connection member 120a of the first liquid container 100a. Each side end support portion 162 holds a corner portion on the +Y direction side of the accommodation portion 110b.

Please refer to FIG. The arrangement configuration of components for connecting to the second connection receiving portion 50b of the connection member 120b of the second liquid container 100b is substantially the same as that of the connection member 120a of the first liquid container 100a. Since the connection member 120b of the second liquid container 100b has little change from the connection member 120a of the first liquid container 100a, parts can be shared, and the manufacturing cost can be reduced. In addition, the second connection receiving portion 50b corresponding to the connecting member 120b of the second liquid container 100b can also have substantially the same configuration as the first connection receiving portion 50a corresponding to the connecting member 120a of the first liquid container 100a. , the manufacturing cost of the connection member 120 can be reduced.

In the following description, when there is no particular need to distinguish between the storage portion 110a of the first liquid storage body 100a and the storage portion 110b of the second liquid storage body 100b, the storage portions 110a and 110b will be referred to as the “storage portion 110”. Collectively. Moreover, when there is no need to distinguish between the connection member 120a of the first liquid container 100a and the connection member 120b of the second liquid container 100b, the connection members 120a and 120b are collectively referred to as "connection member 120".

[Second case]
The second case 61b has substantially the same configuration as the first case 61a, except that it is modified so as to match the width of the second liquid container 100b in the X direction (Figs. 14, 15, 16-18). Additional wall portions 232 are provided at both ends in the X direction of the +Y direction end of the second case 61b. The additional wall portion 232 faces one of the pair of side end support portions 162 of the connection member 120b in the Y direction when the second liquid container 100b is arranged (FIG. 13).

[Mounting Mechanism of Liquid Container]
A mounting mechanism of the liquid container 100 to the connection receiving portion 50 will be described with reference to FIG. 19 . The upper part of FIG. 19 illustrates the first liquid container 100a arranged in the first case 61a when viewed in the -Y direction. Also, in the lower part of FIG. 19, a part of the first connection receiving part 50a when viewed in the -Z direction is illustrated so as to correspond to the first liquid container 100a in the upper part. The following description is common to the mounting of the first liquid container 100a to the first connection receiving portion 50a and the mounting of the second liquid container 100b to the second connection receiving portion 50b.

In the case housing portion 60 (FIG. 3), when the liquid container 100 is moved in the +Y direction toward the arrangement area LA in a state where the liquid container 100 is arranged in the case 61, first, the pair of receiving portions 150a of the liquid container 100 is moved. , 150b, the pair of positioning portions 53a and 53b of the connection receiving portion 50 are inserted to position the liquid outlet 131 of the liquid container 100. As shown in FIG.

Then, the liquid introduction portion 51 of the connection receiving portion 50 is inserted into the liquid outlet 131 of the liquid container 100, and the liquid outlet 131 of the liquid container 100 and the liquid introduction portion 51 of the connection receiving portion 50 are connected. be. Before the connection between the liquid outlet 131 and the liquid introduction section 51 is completely completed, the peripheral edge rib 133 provided around the liquid outlet 131 is removed from the base end member 57 around the liquid introduction section 51 . come into contact with When the liquid container 100 and the case 61 are pushed in the +Y direction until the connection between the liquid outlet port 131 and the liquid introduction portion 51 is completed, the base end member 57 is displaced in the +Y direction. The liquid container 100 is biased in the −Y direction by a biasing member provided inside the proximal end member 57 .

In parallel with the connection between the liquid outlet port 131 and the liquid introduction part 51, the device-side electrical connection part 52 of the connection receiving part 50 is inserted into the substrate placement part 144 of the liquid container 100, and the container-side electrical connection is established. It makes electrical contact with the substrate portion 141 of the portion 140 . When the connection between the liquid outlet port 131 and the liquid introduction part 51 is completed, the electrical connection between the container-side electrical connection part 140 and the device-side electrical connection part 52 is established.

The apparatus-side fixing structure 54 of the connection receiving portion 50 is configured such that the convex portion 210 forming the entrance of the groove portion 215 of the case 61 is formed before the pair of positioning portions 53a and 53b are inserted into the pair of receiving portions 150a and 150b. is inserted into the internal space 211 of the When the connection between the liquid outlet 131 and the liquid introduction section 51 is completed, the protrusion 54p of the device-side fixing structure 54 is engaged with the case-side fixing structure 220 (FIGS. 12 and 18) of the case 61 by an engagement mechanism described later. engages with the engaged portion. The state in which the case 61 is thus fixed in the predetermined arrangement area LA (FIG. 3) of the case 61 is the "case housed state in which the case 61 is attached to the case housing portion 60".

In the liquid container 100 of this embodiment, the container-side electrical connection portion 140 is positioned between the liquid outlet port 131 and the first receiving portion 150a in the X direction. Therefore, the pair of positioning portions 53a and 53b and the pair of receiving portions 150a and 150b increase the positioning accuracy in the X direction of the container side electrical connection portion 140 with respect to the device side electrical connection portion 52 as well as the liquid outlet 131. .

In addition, in the liquid container 100 of the present embodiment, the concave portion 160 accommodating the internal space 211, which is the entrance portion of the case-side fixing structure 220, is located between the liquid outlet port 131 and the first receiving portion 150a in the X direction. located in Therefore, the pair of positioning portions 53a and 53b and the pair of receiving portions 150a and 150b guide the movement of the device side fixing structure 54 in the Y direction after the device side fixing structure 54 is inserted into the groove portion 215. , the positioning accuracy of the device-side fixing structure 54 with respect to the case-side fixing structure 220 is enhanced.

In addition, in the liquid container 100 of the present embodiment, as described above, the container-side electrical connection portion 140 and the concave portion 160 are provided between the liquid outlet 131 and the first receiving portion 150a. The distance in the X direction between the receiving portions 150a and 150b is increased. Therefore, the accuracy of positioning described above by the pair of positioning portions 53a and 53b and the pair of receiving portions 150a and 150b is further enhanced.

As described above, in the liquid container 100 of the present embodiment, the first opening 151a of the first receiving portion 150a and the second opening 151b of the second receiving portion 150b have different opening shapes. An opening width _W2 of the second opening 151b in the X direction is larger than an opening width _W1 of the first opening 151a in the X direction. With this configuration, the angle of the second positioning portion 53b in the horizontal direction with respect to the Y direction when the second positioning portion 53b is inserted into the second receiving portion 150b can have a margin. Therefore, the operation of connecting the liquid container 100 to the connection receiving portion 50 is facilitated. In addition, by providing such a margin, the stress generated when the second positioning portion 53b is inserted into the second receiving portion 150b when connecting the liquid container 100 to the connection receiving portion 50 is reduced. . In the present embodiment, the first opening 151a and the second opening 151b have substantially the same opening width in the Z direction, but the first opening 151a and the second opening 151b have different opening widths in the Z direction. good too.

[Engagement Mechanism of Fixing Structure on Device Side with Fixing Structure on Case Side]
The engagement mechanism of the device side fixing structure 54 with the case side fixing structure 220 of the case 61 will be described with reference to FIGS. 20A and 20B. 20A and 20B each show the case-side fixing structure 220 when viewed in the -Z direction. 20A and 20B, positions P1 to P6 of the protrusion 54p at different timings are indicated by dashed lines in order to show the movement trajectory of the protrusion 54p of the device-side fixing structure 54 in the groove 215. As shown in FIG.

First, the configuration of the case-side fixing structure 220 will be described with reference to FIG. 20A. The case-side fixing structure 220 has a central convex portion 221 protruding in the +Z direction at the center of a recessed region on the −Y direction side of the internal space 211 of the convex portion 210 . When viewed in the Z direction, the outer peripheral wall surface of the central protrusion 221 forms a substantially triangular outer peripheral contour line. The inside of the central protrusion 221 is lightened.

The outer peripheral wall surface of the central protrusion 221 includes a first wall surface 222 , a second wall surface 223 and a third wall surface 224 . The first wall surface 222 extends obliquely between the X direction and the Y direction. At least part of the first wall surface 222 overlaps the internal space 211 in the Y direction. The second wall surface 223 extends in the X direction and intersects the first wall surface 222 . The third wall surface 224 extends in the Y direction and intersects the first wall surface 222 and the second wall surface 223 . The third wall surface 224 overlaps the internal space 211 of the protrusion 210 in the Y direction.

The central convex portion 221 has a first protruding wall portion 225 and a second protruding wall portion 226 . The first protruding wall portion 225 extends slightly from the second wall surface 223 in the −Y direction along the direction in which the first wall surface 222 extends, at the −X direction end of the second wall surface 223 . extending out. The second projecting wall portion 226 is a wall portion that functions as an engaged portion. Below, the 2nd protruding wall part 226 may be called the to-be-engaged part 226. As shown in FIG. The second protruding wall portion 226 slightly extends from the second wall surface 223 in the -Y direction along the direction in which the third wall surface 224 extends, at the end of the second wall surface 223 on the +X direction side. ing.

The case-side fixing structure 220 further has a third projecting wall portion 227 . The third projecting wall portion 227 is formed as part of the rib 216 . The third protruding wall portion 227 protrudes in the +Y direction from the rib 216 toward the second wall surface 223 at a position facing the second wall surface 223 of the central protrusion 221 in the Y direction.

For convenience of explanation, the groove portion 215 is divided into a first groove portion 215a, a second groove portion 215b, a third groove portion 215c, and a fourth groove portion 215d. The first groove portion 215a is a portion formed by the internal space 211 and extending in the Y direction. The second groove portion 215b is a portion that faces the first wall surface 222 and extends in an oblique direction between the X direction and the Y direction. The third groove portion 215c includes a portion facing the second wall surface 223, and is formed by the three projecting wall portions 225 to 227 so as to meander in a substantially zigzag manner in the X direction. The fourth groove portion 215d is a portion that faces the third wall surface 224 and extends in the +Y direction toward the first groove portion 215a.

A first bottom surface 228a, which is the bottom surface of the first groove portion 215a, forms an inclined surface that gradually rises in the +Z direction toward the -Y direction. A second bottom surface 228b, which is the bottom surface of the portion of the second groove portion 215b connected to the first groove portion 215a, forms a substantially horizontal horizontal surface. A third bottom surface 228c positioned around the center of the second groove portion 215b forms an inclined surface that drops in the -Z direction from the second bottom surface 228b. A fourth bottom surface 228d including the bottom surface of the −Y direction end portion of the second groove portion 215b and the bottom surface of the third groove portion 215c forms a substantially horizontal horizontal surface. The fifth bottom surface 228e, which is the bottom surface of the fourth groove portion 215d, forms an inclined surface rising in the +Z direction from the fourth bottom surface 228d toward the +Y direction. A sixth bottom surface 228f between the first bottom surface 228a and the fifth bottom surface 228e forms a substantially horizontal horizontal surface.

Referring to FIG. 20A, the engagement between the second projecting wall portion 226 (engaged portion 226) of the case-side fixing structure 220 and the projection portion 54p (engaging portion) of the device-side fixing structure 54 is completed. Explain the mechanism up to When the tip portion 54t of the device-side fixing structure 54 is inserted in the -Y direction into the first groove portion 215a, the end surface of the tip portion 54t on the +X direction side contacts the side wall surface 229 on the +X direction side of the first groove portion 215a. In contact, the protrusion 54p of the device-side fixing structure 54 is positioned away from the side wall surface 229 (P1). At this time, since the end surface of the tip portion 54t is pushed in the −X direction by the side wall surface 229, the device side fixing structure 54 is rotated in the −X direction more than when no external force is applied in the horizontal direction. It is in a state of In the process of moving in the +Y direction from the position P1, the protrusion 54p of the device-side fixing structure 54 comes into contact with the first bottom surface 228a, which is an inclined surface, and is pushed in the +Z direction by the first bottom surface 228a.

When the liquid container 100 is further pushed in the +Y direction, the protrusion 54p of the device-side fixing structure 54 is pushed by the first bottom surface 228a in the +Z direction, and the tip 54t of the device-side fixing structure 54 moves toward the +Z direction of the rib 216. It is located on the +Z direction side of the end face on the direction side and is separated from the rib 216 . Then, the protrusion 54p of the device-side fixing structure 54 comes into contact with the first wall surface 222 and rides on the horizontal second bottom surface 228b (position P2).

The projecting portion 54p of the device-side fixing structure 54 moves in the -Y direction along the first wall surface 222 while being pushed in the -X direction by the first wall surface 222, descends the third bottom surface 228c, and extends horizontally. It reaches the third bottom surface 228c and reaches a position where it contacts the first projecting wall portion 225 (position P3). Thereafter, when the projecting portion 54p of the device-side fixing structure 54 moves further in the -Y direction and is released from contact with the first projecting wall portion 225, it moves towards the device-side fixing structure 54 in the +X direction. Due to the applied biasing force, it instantaneously moves in the +X direction and collides with the third projecting wall portion 227 (position P4). This collision produces a clicking sound.

Using the click sound as a signal, the user releases the force applied to the liquid container 100 and the case 61 in the + Y direction . Body 100 and case 61 move slightly in the -Y direction. As a result, the projecting portion 54p of the device-side fixing structure 54 moves in the +Y direction along the third projecting wall portion 227, and the contact state of the projecting portion 54p with the third projecting wall portion 227 is released. Then, the projecting portion 54p instantaneously moves in the +X direction due to the biasing force applied to the device-side fixing structure 54 toward the +X direction, and collides with the second wall surface 223 and the second projecting wall portion 226. and received (position P5).

Thus, at position P5, the projection 54p of the device-side fixing structure 54 is engaged with the second projecting wall portion 226 of the case-side fixing structure 220, and the second projecting wall portion 226 of the case-side fixing structure 220 and the device-side fixing structure 220 are locked. The protrusion 54p of the fixing structure 54 is engaged. Below, the 2nd protruding wall part 226 may be called "locking|locking part 226" other than "to-be-engaged part 226." The engagement between the second projecting wall portion 226 of the case-side fixing structure 220 and the projecting portion 54p of the apparatus-side fixing structure 54 restricts the movement of the case 61 in the -Y direction, and the case 61 is housed in the case. It is in the case housing state attached to the portion 60 . In this state, the protrusion 54p of the device-side fixing structure 54 is in contact with the fourth bottom surface 228d. As described above, the device-side fixing structure 54 is biased in the -Z direction by an elastic member (not shown) arranged inside the connection receiving portion 50, and when it receives an external force in the +Z direction, It rotates elastically in the +Z direction. This biasing force in the +Z direction is transmitted to the fourth bottom surface 228d (FIG. 20A) through the protrusion 54p. That is, in the case housed state in which the case 61 is attached to the case housing portion 60, the projecting portion 54p applies force to the case 61 in the -Z direction.

Here, in the case housed state in which the engaged portion 226 of the case-side fixing structure 220 and the engaging portion 54p of the device-side fixing structure 54 are engaged with each other, the container-side electrical connection portion 140 is connected to the device. It is electrically connected to the side electrical connection portion 52 , and the container side electrical connection portion 140 is in a state of receiving a force in at least the +Z direction from the apparatus side electrical connection portion 52 . In the liquid container 100 of this embodiment, as described above, the concave portion 160 and the container-side electrical connection portion 140 have a positional relationship in which at least a portion of them overlap when viewed in the Z direction. The convex portion 210 of the case 61 is accommodated in the concave portion 160 . The internal space 211 of the protrusion 210 constitutes at least part of the case-side fixing structure 220 . At least part of the force in the +Z direction that the container-side electrical connection portion 140 receives from the device-side electrical connection portion 52 is canceled by the force that the case 61 receives in the -Z direction from the protrusion 54p. Therefore, the component in the Z direction of the force that the liquid container 100 receives in the +Y direction is reduced, and it is suppressed that the position of the liquid container 100 in the Z direction deviates from the assumed proper position. . Therefore, deterioration of the arrangement posture of the liquid container 100 with respect to the connection receiving portion 50 is suppressed, and the connection state is improved. In addition, as the arrangement posture of the liquid container 100 is lowered, unnecessary stress is prevented from being generated in the connection portion between the connection receiving portion 50 and the liquid container 100. Damage and deterioration of the above-described various components for connecting with the body 100 are suppressed.

A mechanism for releasing the engagement between the case-side fixing structure 220 and the device-side fixing structure 54 will be described with reference to FIG. 20B. In the liquid ejecting apparatus 10 of the present embodiment, as described below, the case-side fixing structure 220 and the device-side fixing structure 54 are in the engaged state described above, and the case 61 is further pushed in the +Y direction. is configured to release the engaged state. When the user pushes the case 61 in the +Y direction, the protrusion 54p of the device-side fixing structure 54 moves from the position P5 in the +Y direction and is released from the state of being engaged with the second protrusion wall 226 in the +X direction. Therefore, due to the biasing force applied to the device-side fixing structure 54 in the +X direction by the biasing member, the protrusion 54p instantaneously moves in the +X direction, and the side wall surface 229 of the rib 216 on the +X direction side moves. (position P6).

As a result, the projecting portion 54p is positioned in the fourth groove portion 215d, so that it is allowed to move in the +Y direction. That is, the engagement state between the case-side fixing structure 220 and the device-side fixing structure 54 is released. The user can know that the case-side fixing structure 220 and the device-side fixing structure 54 are disengaged from the click sound generated by the collision of the protrusion 54p with the rib 216 described above. When the projection 54p is permitted to move in the +Y direction, the liquid container 100 and the case 61 automatically move in the -Y direction due to the force applied in the +Y direction by the base end member 57 ( FIG. 19 ). . After the base end member 57 is separated from the connection receiving portion 50 , the liquid container 100 can be taken out by the user pulling out the case 61 . As can be seen from the above description, the groove portion 215 constitutes a loop-shaped guide path that guides the projection portion 54p. The entrance and exit portions of the guide route are common. The guide path is composed of a locking portion 226 that locks the projection 54p provided in the middle, an entrance-side guide path, and an exit-side guide path. The entrance-side guide path is a route portion from the entrance portion described above to the engaging portion 226 . The outlet-side guide path is a route portion from the locking portion 226 to the outlet portion described above.

[Packing of liquid container]
21A and 21B are schematic diagrams for explaining a method of packing the liquid container 100. FIG. The liquid container 100 is desirably packed as follows before it is attached to the case 61 of the liquid ejecting apparatus 10, such as when shipped from a factory. In the first step, the entire liquid container 100 is housed in a bag-like packing material 300 made of a flexible film member and hermetically sealed (FIG. 21A).

The packing material 300 is desirably made of a material having good gas barrier properties. The gas permeability of the packing material 300 is preferably less than 1.0 [cc/(m ² ·day · atm)], and is 0.5 [cc/(m ² ·day · atm)] or less. is more desirable. Furthermore, it is more desirable that the gas permeability of the packing material 300 is 0.1 [cc/(m ² ·day·atm)] or less. The gas permeability may be a value measured by the isobaric method. The isobaric method is that after filling inert gas at the same pressure into two chambers separated by a diaphragm formed of a sample, a test gas is injected into one of the chambers, and the test gas is This is a method of measuring the speed at which is transmitted through the sample and moves to the other room space. The packing material 300 is made of, for example, aluminum foil, silica-deposited film, or aluminum-deposited film. When gas barrier properties are taken into consideration, the preferred order is aluminum foil, silica deposited film, and aluminum deposited film.

The packing material 300 is provided in advance with an air suction port 301 that communicates with its internal space. In the second step, a suction pump 310 is connected to the air suction port 301 to depressurize the internal space of the packing material 300 . In this step, it is desirable that the pressure be reduced to such an extent that the packing material 300 is in close contact with the entire liquid container 100 (FIG. 21B).

If the internal space of the packing material 300 is decompressed, the air present in the containing portion 110 of the liquid container 100 can be guided to the outside of the containing portion 110, and the liquid contained in the containing portion 110 can be released. Durability can be improved. In addition, since the accommodating portion 110 is tightly wrapped in the packing material 300, deformation of the accommodating portion 110 having flexibility is suppressed. Therefore, deterioration in the stability of the liquid in the storage section 110 is suppressed, such as the liquid in the storage section 110 swinging due to the deformation of the storage section 110 . In addition, by suppressing the deformation of the containing portion 110, the handleability of the liquid containing body 100 is enhanced.

Instead of performing the depressurization step by the suction pump 310 in the second step, the liquid container 100 may be wrapped in the packing material 300 so that the liquid container 100 is tightly tightened in the first step. . Even with such a method, the deformation of the containing portion 110 can be easily suppressed by the packing material 300, and the protection of the liquid and the handling of the liquid containing body 100 are improved.

[Summary of the first embodiment]
As described above, according to the liquid container 100 of the present embodiment, when the liquid container 100 is attached to the liquid ejecting apparatus 10 , at least one of the forces in the Z direction that the container-side electrical connection portion 140 receives from the device-side electrical connection portion 52 is is reduced by the force that the case 61 receives from the protrusion 54p of the device-side fixing structure 54, that is, the engaging portion 54p. Therefore, it is possible to prevent the liquid container 100 from deviating in the Z direction from the proper orientation. In addition, since the width of the liquid container 100 in the Z direction is smaller than the width of the liquid container 100 in the X direction and the width in the Y direction, the arrangement posture of the liquid container 100 on the case 61 is stabilized. Therefore, the connection state of the liquid container 100 to the liquid ejecting device 10 is improved. In addition, various effects described in the above embodiments can be obtained. Such effects can be similarly obtained in the liquid ejection system 11 in which the liquid container 100 is attached to the liquid ejection device 10 .

B. Second embodiment:
FIG. 22 is a schematic perspective view showing the configuration of the liquid container 100B in the second embodiment. The liquid container 100B of the second embodiment has substantially the same configuration as the first liquid container 100a of the first embodiment, except for the points described below. Like the first liquid container 100a of the first embodiment, the liquid container 100B of the second embodiment is housed in the case housing portion 60 of the liquid ejecting apparatus 10 while being arranged in the first case 61a. , to the first connection receiving portion 50a.

The liquid container 100B of the second embodiment is provided with a plurality of protective walls 135 around the peripheral edge rib 133 surrounding the liquid outlet 131. As shown in FIG. A plurality of protective walls 135 are arranged along the peripheral edge 132 above and laterally of the liquid outlet 131 . The plurality of protective wall portions 135 protrude most in the + Y direction in the liquid container 100 . In the liquid container 100B of the second embodiment, the protection of the liquid outlet 131 is enhanced by the plurality of protective walls 135. As shown in FIG.

In the liquid container 100B of the second embodiment, the peripheral edge rib 133 and the peripheral edge portion 132 recessed in the -Y direction may be omitted. Further, the liquid outlet 131 may be provided so as to protrude in the + Y direction as long as it does not protrude in the + Y direction beyond the plurality of protective wall portions 135 . The plurality of protective wall portions 135 may have different lengths in the + Y direction. A plurality of protective walls 135 may be applied to the second liquid container 100b described in the first embodiment. According to the liquid containing body 100B of the second embodiment and the liquid ejection system 11 in which the liquid containing body 100B of the second embodiment is attached to the liquid ejecting apparatus 10, various effects described in the first embodiment are obtained. can be played.

C. Third embodiment:
FIG. 23 is a schematic perspective view showing the configuration of a liquid container 100C according to the third embodiment. A liquid container 100C of the third embodiment has substantially the same configuration as the first liquid container 100a of the first embodiment, except for the points described below. Like the first liquid container 100a of the first embodiment, the liquid container 100C of the third embodiment is housed in the case housing portion 60 of the liquid ejecting apparatus 10 while being arranged in the first case 61a. , to the first connection receiving portion 50a.

The liquid container 100</b>C of the third embodiment is provided with a protective wall portion 136 projecting in the + Y direction only in the region above the liquid outlet 131 . The protective wall portion 136 protrudes most in the + Y direction in the liquid container 100 . A slit 136s extending in the Y direction is formed in the center of the protective wall portion 136 in the X direction. The slit 136s may be omitted. Even in the liquid container 100 C of the third embodiment, the protection of the liquid outlet 131 is enhanced by the protective wall portion 136 .

In the liquid container 100C of the third embodiment, the peripheral edge rib 133 and the peripheral edge portion 132 recessed in the -Y direction may be omitted. Further, the liquid outlet 131 may be provided so as to protrude in the + Y direction as long as it does not protrude further in the + Y direction than the protective wall portion 136 . The protective wall portion 136 may be applied to the second liquid container 100b described in the first embodiment. According to the liquid container 100C of the third embodiment and the liquid ejecting system 11 in which the liquid container 100C of the third embodiment is attached to the liquid ejecting apparatus 10, various functions and effects described in the first embodiment can be obtained. can be played.

D. Fourth embodiment:
FIG. 24 is a schematic perspective view showing the configuration of a liquid container 100D according to the fourth embodiment. The liquid container 100D of the fourth embodiment has substantially the same configuration as the first liquid container 100a of the first embodiment, except for the points described below. Like the first liquid container 100a of the first embodiment, the liquid container 100D of the fourth embodiment is housed in the case housing portion 60 of the liquid ejecting apparatus 10 while being arranged in the first case 61a. , to the first connection receiving portion 50a.

In the liquid container 100D of the fourth embodiment, the peripheral edge rib 133 is omitted, and the periphery of the peripheral edge portion 132 protrudes in the + Y direction as a whole, thereby forming a peripheral edge convex portion 137 surrounding the liquid outlet 131. there is The peripheral protrusion 137 protrudes most in the + Y direction in the liquid container 100 . According to the liquid container 100</b>D of the fourth embodiment, the protection of the liquid outlet 131 is enhanced by the peripheral protrusion 137 . A break may be provided in the middle of the peripheral convex portion 137 . The peripheral rib 133 described in the first embodiment may be provided on the end surface of the peripheral convex portion 137 on the + Y direction side.

In the liquid container 100</b>D of the fourth embodiment, the liquid outlet 131 may protrude in the +Y direction as long as it does not protrude further in the + Y direction than the peripheral protrusion 137 . The peripheral protrusion 137 may be applied to the second liquid container 100b described in the first embodiment. According to the liquid container 100D of the fourth embodiment and the liquid ejection system 11 in which the liquid container 100D of the fourth embodiment is attached to the liquid ejecting apparatus 10, the various effects described in the first embodiment are achieved. be able to.

E. Fifth embodiment:
FIG. 25 is a schematic perspective view showing a case 61E in the fifth embodiment. FIG. 25 illustrates a state in which the first liquid container 100a described in the first embodiment is arranged in the case 61E of the fifth embodiment, and the opening/closing lid section 235 is opened. A case 61E of the fifth embodiment has substantially the same configuration as the first case 61a described in the first embodiment, except that an opening/closing lid portion 235 is added.

The opening/closing lid portion 235 rotates above the liquid container 100 with a hinge portion 236 provided at the end on the -Y direction side serving as a fulcrum. When the opening/closing lid portion 235 is closed, the opening/closing lid portion 235 and the lid member 203 cover most of the upper portion of the storage portion 110a of the first liquid container 100a arranged in the case 61E. This enhances the protection of the first liquid container 100a.

A claw portion 237 that can be engaged with the first side wall portion 201 and the second side wall portion 202 is provided at the outer peripheral end portion of the opening/closing lid portion 235 . Note that the lid member 203 may be omitted, and only the opening/closing lid portion 235 may cover the upper portion of the housing portion 110a. Also, the hinge portion 236 and the claw portion 237 of the opening/closing lid portion 235 may be omitted. The opening/closing lid portion 235 may be applied to the second case 61b described in the first embodiment. It should be noted that, according to the case 61E of the fifth embodiment, in addition to the effects described above, various effects described in the first embodiment can be obtained.

F. Sixth embodiment:
The configurations of the liquid container 100F and the case 61F in the sixth embodiment will be described with reference to FIGS. 26 to 28. FIG. FIG. 26 is a schematic perspective view showing the liquid container 100F arranged in the case 61F. FIG. 27 is a schematic exploded perspective view showing a state in which the liquid container 100F is removed from the case 61F. FIG. 28 is a schematic diagram of the liquid container 100F arranged in the case 61F when viewed in the -Y direction. A liquid container 100F and a case 61F in the sixth embodiment have substantially the same configurations as the liquid container 100 and the case 61 in the first embodiment, respectively, except for the points described below.

The liquid ejecting apparatus to which the liquid container 100F of the sixth embodiment is attached is substantially the same as the liquid ejecting apparatus 10 described in the first embodiment, except that it is an inkjet printer that performs monochrome printing. In the liquid ejecting apparatus of the sixth embodiment, one liquid container 100F occupies substantially the entire X-direction of the case housing portion 60 . One connection receiving portion 50 is installed approximately in the center in the X direction in the region on the +Y direction side of the case housing portion 60 .

The container portion 110F of the liquid container 100F of the sixth embodiment has a wider width in the X direction than the liquid container 100 of the first embodiment, and is larger than the width in the Y direction. The connecting member 120F of the liquid container 100F has both ends in the X direction extending in the +X direction or the −X direction, respectively, according to the width in the X direction of the containing portion 110F. The connection member 120F is configured to be connectable to the connection receiving portion 50 having the same configuration as described in the first embodiment. Therefore, in the connection member 120F, the liquid outlet port 131, the container-side electrical connection portion 140, the first receiving portion 150a, the second receiving portion 150b, the fitting structure receiving portion, which are components for connection to the connection receiving portion 50, are provided. The arrangement layout of 155 is almost the same as the connection member 120 of the first embodiment.

In the case 61F of the sixth embodiment, the width of the bottom wall portion 200 in the X direction is enlarged so as to fit the liquid container 100F, and the distance between the first side wall portion 201 and the second side wall portion 202 and the lid member The width of 203 in the X direction is enlarged. A pair of fitting wall portions 238 projecting in the -Z direction are provided at the +Y direction end portion of the upper surface of the bottom wall portion 200 of the case 61F of the sixth embodiment. The pair of fitting wall portions 238 are provided at positions sandwiching the convex portion 210 and the pair of fitting convex portions 207 in the X direction. Each fitting wall portion 238 is provided such that its wall surface is oriented substantially orthogonal to the Y direction. Each fitting wall portion 238 is inserted and fitted into a fitting groove (not shown) provided in the fourth surface portion 124 of the connecting member 120 when the liquid container 100F is arranged in the case 61F. . This enhances the stability of the position and orientation of the liquid container 100F in the case 61F.

According to the liquid container 100F of the sixth embodiment, the ink capacity can be increased. In addition, the stability of the arrangement posture of the liquid container 100F is enhanced. In addition, according to the liquid container 100F of the sixth embodiment and the liquid ejecting system in which the liquid container 100F of the sixth embodiment is attached to the liquid ejecting apparatus, various effects described in the first embodiment can be obtained. can play. A liquid ejecting apparatus to which the liquid container 100F of the sixth embodiment is mounted may have a configuration in which a plurality of liquid containers 100F are stacked in the Z direction and mounted in parallel.

G. Seventh embodiment:
A seventh embodiment will be described with reference to FIGS. 29 to 31. FIG. In the seventh embodiment, examples of various combinations of the liquid container 100 and the case 61 will be described. In the example of FIG. 29, the first liquid container 100a is arranged on the second case 61b. The connecting member 120a of the first liquid container 100a is supported in a state of being sandwiched in the X direction by the additional wall portion 232 of the second case 61b. With this combination, the first liquid container 100a may be placed in the placement area LA (FIG. 3) in the case storage portion 60 where the second case 61b is placed.

In the example of FIG. 30, the first liquid container 100a is arranged on the case 61F of the sixth embodiment. The connection member 120a of the first liquid container 100a is supported while being sandwiched in the X direction between the pair of fitting walls 238 of the case 61F. This combination allows the first liquid container 100a to be stably attached to the liquid ejecting apparatus described in the sixth embodiment. As illustrated in FIG. 31, the second liquid container 100b may be arranged in the case 61F of the sixth embodiment.

H. Modifications of each embodiment:
Modified aspects of the configuration of each of the above embodiments will be described as modified examples.

H1. Variant 1:
In each of the embodiments described above, the Y direction, which is the moving direction of the liquid container 100 and the case 61 in the case housing portion 60 , coincides with the front-rear direction of the liquid ejecting apparatus 10 . On the other hand, the Y direction, which is the moving direction of the liquid container 100 and the case 61 in the case housing portion 60 , does not have to match the front-rear direction of the liquid ejecting apparatus 10 . The Y direction, which is the movement direction of the liquid container 100 and the case 61 in the case storage portion 60, may be the lateral direction of the liquid ejecting apparatus 10, for example. That is, the mounting openings for the liquid container 100 and the case 61 may be provided on the right or left side surface of the liquid ejection device 10 . Further, in each of the embodiments described above, the case housing portion 60 is provided at the lowest position in the liquid ejecting apparatus 10 . On the other hand, the case housing portion 60 may be formed at other height positions. The case housing portion 60 may be provided in the central portion in the Z direction.

H2. Modification 2:
The liquid ejecting apparatus 10 of the first embodiment is equipped with four liquid containers 100, and the liquid ejecting apparatus of the sixth embodiment is equipped with one liquid container 100F. The number of liquid containers 100 attached to the liquid ejecting apparatus is not limited to the number in each of the embodiments described above. For example, the liquid ejecting apparatus may be configured so that only one of the first liquid container 100a or the second liquid containing body 100b of the first embodiment can be attached, or the liquid ejecting apparatus It may be configured to accommodate two or more liquid containers 100F. In addition, in the first embodiment described above, two types of liquid containers 100a and 100b are attached to the liquid ejecting apparatus 10. As shown in FIG. On the other hand, the liquid ejecting apparatus 10 may be equipped with three or more types of liquid containers having different configurations.

H3. Variant 3:
In each of the above embodiments, the case-side fixing structure 220 has a heart cam groove structure. On the other hand, the case-side fixing structure 220 may not have the heart cam groove structure. For example, the case-side fixing structure 220 may have only a stepped portion with which the protrusion 54p of the device-side fixing structure 54 engages in the −Y direction in the engaged state. In this case, the device-side fixing structure 54 is desirably configured so that it can be moved in the X direction to release the engaged state by user's operation or the like.

H4. Variant 4:
In each of the above embodiments, the first receiving portion 150a and the second receiving portion 150b are configured as holes into which the corresponding positioning portions 53a and 53b are inserted. On the other hand, the first receiving portion 150a and the second receiving portion 150b may not be formed as holes, and may be formed as slits extending in the Z direction, for example. Moreover, the tip of each positioning part 53a, 53b may be configured as a contact part that contacts.

H5. Variant 5:
In each of the embodiments described above, the container-side electrical connection portion 140 includes the substrate portion 141 . On the other hand, the container-side electrical connection portion 140 may not include the substrate portion 141 . The container-side electrical connection section 140 may have, for example, only an electrode section with which the device-side electrical connection section 52 makes electrical contact. In each of the above-described embodiments, the substrate portion 141 of the container-side electrical connection portion 140 is arranged to face obliquely upward. On the other hand, the substrate portion 141 of the container-side electrical connection portion 140 does not have to be arranged to face obliquely upward. The substrate portion 141 may be arranged at an angle that allows it to be electrically connected to the device-side electrical connection portion 52 while receiving at least a force directed toward the +Z direction from the device-side electrical connection portion 52 . For example, the substrate section 141 may be arranged substantially horizontally so as to face the -Z direction.

H6. Modification 6:
The configuration of the liquid container 100 is not limited to the configuration described in each of the above embodiments. For example, the container portion 110 of the liquid container 100 may have a substantially disk shape. Further, in the connection receiving portion 50, the liquid outlet port 131 may not be positioned at the center in the X direction, and the container-side electrical connection portion 140 may be provided at the center in the X direction. The liquid outlet 131 may not be provided between the pair of receiving portions 150a and 150b in the X direction. Moreover, the pair of receiving portions 150a and 150b may not be provided at the same height position, and may have substantially the same opening shape and opening size. The container-side electrical connection portion 140 may not be formed at a position recessed in the -Y direction, and may be formed at a position protruding in the +Y direction.

H7. Variant 7:
The configuration of the case 61 in which the liquid container 100 is arranged is not limited to the configuration described in each of the above embodiments. The case 61 may not have a tray-like configuration, and may be configured by, for example, a frame-like member combining a plurality of columnar members.

H8. Modification 8:
The connection receiving portion 50 to which the liquid container 100 is connected is not limited to the configuration described in each of the above embodiments. The connection receiving portion 50 may not be configured as a single component, and the liquid introduction portion 51, the device side electrical connection portion 52, and the pair of positioning portions 53a and 53b are separately arranged as different members. You may have a configuration with

H9. Modification 9:
The liquid ejecting apparatus 10 of each of the embodiments described above is a printer, and the liquid ejecting system 11 is an inkjet printing system. On the other hand, the liquid ejecting apparatus 10 may not be a printer, and the liquid ejecting system 11 may not be a printing system. The liquid injection device 10 may be configured, for example, as a cleaning device that injects a liquid detergent. In this case the liquid injection system is a cleaning system.

The present invention is not limited to the above-described embodiments, examples, and modifications, and can be implemented in various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each form described in the outline of the invention are used to solve some or all of the above problems, or In order to achieve some or all of the above effects, it is possible to appropriately replace or combine them. Also, in this specification, it is not limited to what is explained that it may be omitted, and if the technical features are not described as essential in this specification, they can be deleted as appropriate. It is possible.

DESCRIPTION OF SYMBOLS 10... Liquid injection apparatus 10c... Housing 11... Liquid injection system 12... Front part 13... Operation part 13b... Operation button 13i... Display part 14... Medium outlet 15... Medium receiving part 16... Medium storage opening 17 Medium storage unit 18 Cover member 20 Control unit 30 Ejection execution unit 31 Head unit 32 Tube 32r Curved portion 33 Nozzle 34 Carriage 35 Medium conveying part 36 Conveying roller 40 Liquid supply part 42 Supply pipe 43 Joint part 45 Fluctuation pressure generating part 46 Pressure transmission pipe 50 Connection receiving part 50a First connection receiving part Part 50b... Second connection receiving part 51... Liquid introduction part 51p... Through hole 51t... Tip part 52... Device side electrical connection part 52t... Terminal part 53a... First positioning part 53b... Second Positioning part 53g Groove 54 Apparatus fixing structure 54p Protrusion (engagement part) 54t Distal end 55 Fitting structure 55c Protrusion 56 Liquid receiving part 57 Base end Member 60 Case storage portion 61, 61a, 61b, 61E, 61F Case 62 Opening member 63 Through hole 64 Rail groove 65 Roller 100, 100a, 100b, 100c, 100B, 100C , 100D, 100F... Liquid container 110, 110a, 110b, 110F... Accommodating portion 111... First sheet member 112... Second sheet member 113... Peripheral edge 120, 120a, 120b, 120F... Connection member , 121... First surface part 122... Second surface part 123... Third surface part 125... Fifth surface part 126... Sixth surface part 128... Slit 131... Liquid outlet 132... Peripheral part 133... Peripheral edge rib , 135...Protective wall portion, 136...Protective wall portion, 136s...Slit, 137...Peripheral edge convex portion, 140...Electrical connection portion on housing body side, 141...Substrate portion, 141s...Surface, 142...Terminal portion, 144...Substrate arrangement portion , 144s... Inclined surface 145... Wall part 150a... First receiving part 150b... Second receiving part 151a... First opening part 151b... Second opening part 155... Fitting structure receiving part 156... Projection Part 157... Valley part 160... Concave part 161... Fitting concave part 162... Side end supporting part 200... Bottom wall part 201... First side wall part 201t... Engagement convex part 202... Second side wall part , 202t... Engagement convex part 203... Lid member 203t... Claw part 204... Recess part 205... Front wall part 207... Fitting convex part 210... Convex part 211... Internal space 213... Thin groove part , 214...Stepped portion 215...Groove part 215a...First groove part 215b...Second groove part 215c...Third groove part 215d...Fourth groove part 216...Rib 220...Case side fixing structure 221...Central protrusion , 222... First wall surface, 223... Second wall surface, 224... Third wall surface, 225... First protruding wall part, 226... Second protruding wall part (engaged part, locking part), 227... Third protruding part Wall portions 228a...first bottom surface 228b...second bottom surface 228c...third bottom surface 228d...fourth bottom surface 228e...fifth bottom surface 228f...sixth bottom surface 229...side wall surface 230...rail rib 231... Leg portion 232 Additional wall portion 235 Opening/closing lid portion 236 Hinge portion 237 Claw portion 238 Fitting wall portion 300 Packing material 301 Air suction port 310 Suction pump CL Central axis, CP... contact part, LA... placement area, MP... medium, P1 to P6... position

Claims (8)

The direction parallel to the direction of gravity is defined as the Z direction, the direction of the Z direction that is the same as the direction of gravity is defined as the +Z direction, the direction opposite to the direction of gravity among the Z directions is defined as the -Z direction, and the Z direction. , one of the Y directions is the +Y direction, the other of the Y directions is the -Y direction, and the Z direction and the Y direction are perpendicular to each other. is the X direction, one of the X directions is the +X direction, and the other of the X directions is the -X direction,
a case housing;
a device-side fixing structure positioned at the +Y-direction end of the case housing;
a liquid introduction portion positioned at the +Y direction side end of the case storage portion;
a device-side electrical connection portion located at the +Y-direction end of the case housing portion, the mounting body being attachable to and detachable from the liquid ejecting device,
a case that is inserted into the case storage portion by moving along the +Y direction;
a liquid container detachable from the case,
The case has a hollow convex portion projecting in the -Z direction at the end on the +Y direction side, and a wall surface on the -Z direction side of an internal space formed by the convex portion. a case-side fixing structure having a loop-shaped groove that guides the fixing structure and a locking portion that locks the device-side fixing structure provided in the groove;
The liquid container is
a storage unit that is flexible and stores a liquid;
a connection member positioned at the +Y-direction end when the liquid container is in a mounted state in which the liquid container is mounted on the liquid ejecting apparatus;
The connection member includes
a liquid outlet into which the liquid inlet is inserted in the +Y direction in the attached state;
a container-side electrical connection portion that is in electrical contact with the device-side electrical connection portion and includes a contact surface whose normal vector has a vector component in the −Z direction and a vector component in the +Y direction in the mounted state; is provided,
The case-side fixing structure and the housing-body-side electrical connection portion are formed at positions where at least parts thereof overlap each other when viewed in the Z direction in the posture of the mounted state,
In the posture of the mounted state, the width of the liquid container in the Z direction is smaller than the width in the Y direction and the width in the X direction,
In a state in which the case-side fixing structure and the device-side fixing structure are engaged, the contact surface receives a force having components in the -Y direction and the +Z direction from the device-side electrical connection portion, and the A mounted body, wherein movement of the mounted body in the -Y direction is restricted by a locking portion, and the container-side electrical connection portion is electrically connected to the device-side electrical connection portion. The mounting body according to claim 1,
The connection member has a first surface facing the +Y direction,
a protective wall portion projecting in the +Y direction from the first surface portion around the liquid outlet;
The mounting body, wherein the liquid outlet is open at a position recessed in the -Y direction from the first surface portion. The mounting body according to claim 1 or claim 2,
The liquid ejecting device includes a first positioning portion positioned at the +Y direction end of the case housing portion,
The connecting member is provided with a first receiving portion that receives the first positioning portion in the attached state,
The mounted body, wherein the container-side electrical connection portion is located between the liquid outlet and the first receiving portion in the X direction when the mounting body is placed in the mounted state. The mounting body according to claim 3,
The mounted body, wherein the liquid outlet is located between the container-side electrical connection portion and the first receiving portion in the Z direction when the mounted body is placed in the mounted state. A liquid ejection system comprising a liquid ejection device and a mounting body,
The direction parallel to the direction of gravity is defined as the Z direction, the direction of the Z direction that is the same as the direction of gravity is defined as the +Z direction, the direction opposite to the direction of gravity among the Z directions is defined as the -Z direction, and the Z direction. , one of the Y directions is the +Y direction, the other of the Y directions is the -Y direction, and the Z direction and the Y direction are perpendicular to each other. is the X direction, one of the X directions is the +X direction, and the other of the X directions is the -X direction,
The liquid injection device is
a case housing;
a device-side fixing structure positioned at the +Y-direction end of the case housing;
a liquid introduction portion positioned at the +Y direction side end of the case storage portion;
a device-side electrical connection portion located at the +Y direction side end of the case housing portion;
The mounting body is
a case that is inserted into the case storage portion by moving along the +Y direction;
a liquid container detachable from the case,
The case has a hollow convex portion projecting in the -Z direction at the end on the +Y direction side, and a wall surface on the -Z direction side of an internal space formed by the convex portion. a case-side fixing structure having a loop-shaped groove that guides the fixing structure and a locking portion that locks the device-side fixing structure provided in the groove;
The liquid container is
a storage unit that is flexible and stores a liquid;
a connection member positioned at the +Y-direction end when the liquid container is in a mounted state in which the liquid container is mounted on the liquid ejecting apparatus;
The connection member includes
a liquid outlet into which the liquid inlet is inserted in the mounted state;
a container-side electrical connection portion that is in electrical contact with the device-side electrical connection portion and includes a contact surface whose normal vector has a vector component in the −Z direction and a vector component in the +Y direction in the mounted state; is provided,
The case-side fixing structure and the housing-body-side electrical connection portion are formed at positions where at least parts thereof overlap each other when viewed in the Z direction in the posture of the mounted state,
In the posture of the mounted state, the width of the liquid container in the Z direction is smaller than the width in the Y direction and the width in the X direction,
In a state where the case-side fixing structure and the device-side fixing structure are engaged with each other, the contact surface receives a force having components in the -Y direction and the +Z direction from the device-side electrical connection portion. A liquid ejection system according to claim 1, wherein a locking portion restricts movement of the mounting body in the -Y direction, and the container-side electrical connection portion is electrically connected to the device-side electrical connection portion. The liquid injection system according to claim 5,
The connection member has a first surface facing the +Y direction,
a protective wall portion projecting in the +Y direction from the first surface portion around the liquid outlet;
The liquid ejecting system, wherein the liquid outlet opens at a position recessed in the -Y direction from the first surface portion. 7. The liquid injection system according to claim 5 or 6,
The liquid ejecting device includes a first positioning portion positioned at the +Y direction end of the case housing portion,
The connecting member is provided with a first receiving portion that receives the first positioning portion in the attached state,
The liquid ejecting system, wherein the container-side electrical connection portion is positioned between the liquid outlet and the first receiving portion in the X direction when the mounted posture is set. A liquid injection system according to claim 7,
The liquid ejecting system, wherein the liquid outlet is positioned between the container-side electrical connection section and the first receiving section in the Z direction when the mounted posture is set.

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