JP2014196000A - Holder capable of attaching and detaching liquid storage container and liquid storage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology which improves the operability achieved when a liquid storage container is attached and detached in a holder capable of attaching and detaching the liquid storage container, and to provide a technology which improves the operation of attachment and detachment to/from the holder in the liquid storage container detachably attached to the holder.SOLUTION: A liquid jet device includes a head for jetting a liquid and is equipped with a holder 20 capable of attaching and detaching a liquid storage container 10 for storing the liquid to be supplied to the head. The holder includes a rotation fulcrum 166w for rotating the liquid storage container attached to the holder in a predetermined direction and removing the liquid storage container from the holder.

Description

  The present invention relates to a holder to which a liquid storage container can be attached and detached, and a liquid storage container.

  A printer, which is an example of a liquid ejecting apparatus, performs printing by ejecting ink from a print head onto a recording object (for example, printing paper). As a technique for supplying ink to a print head, a technique using an ink cartridge that contains ink therein is known (for example, Patent Document 1). Specifically, ink is supplied from the ink cartridge to the print head by mounting the ink cartridge in a holder provided with the print head.

  The holder is configured so that the ink cartridge can be attached and detached so that the user can replace the ink cartridge when the ink in the ink cartridge is low.

JP 2006-142483 A JP 2007-230248 A JP 2010-23458 A

  However, there is room for improvement in operability when the ink cartridge is attached to and detached from the holder. For example, the operation of removing the ink cartridge from the holder may feel complicated for the user. In particular, when the ink cartridge and the holder are engaged, it is necessary to release the engagement and remove the ink cartridge from the holder, and this operation may feel complicated for the user.

  In addition, when the ink cartridge is attached to the holder, depending on the attachment procedure, there is a case where a part of the ink cartridge comes into contact with the inner wall surface of the holder before the ink cartridge is attached, thereby preventing the ink cartridge from being inserted.

  In order to improve operability, a partition wall may be provided on the holder. In this case, there is a problem that the holder is enlarged.

  Regarding the operability at the time of attachment / detachment as described above, not only the ink cartridge and the holder to which the ink cartridge can be attached / detached, but also the liquid container and the liquid container to be detachably attached to the liquid ejecting apparatus. It was a problem common to removable holders.

  Accordingly, a first object of the present invention is to provide a technique for improving the operability at the time of attaching / detaching the liquid storage container in a holder capable of attaching / detaching the liquid storage container. It is a second object of the present invention to provide a technique for improving the attaching / detaching operation to / from a holder in a liquid container detachably attached to the holder.

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

Application Example 1 A holder that is equipped with a liquid ejecting apparatus including a head that ejects liquid, and that is detachable from a liquid container that can store liquid to be supplied to the head,
A holder having a rotation fulcrum for rotating the mounted liquid container in a predetermined direction and removing it from the holder.
According to the holder described in Application Example 1, since the rotation support point for removing the liquid storage container is provided, the user can easily remove the liquid storage container from the holder by rotating the liquid storage container.

[Application Example 2] The holder according to Application Example 1,
A device side bottom wall surface portion forming a bottom surface;
A device-side engaging portion that engages with the liquid container and regulates the movement of the liquid container;
An opposing wall surface portion that is erected from the device-side bottom wall surface portion and is located at a position facing the device-side engagement portion across the device-side bottom wall surface portion,
The rotation fulcrum is formed on the opposing wall surface, and when the force is applied to the liquid storage container in a direction in which the engagement is released, the liquid storage container is centered on the rotation fulcrum in the predetermined direction. A holder that is configured to rotate into.
According to the holder described in the application example 2, the operation of releasing the engagement between the holder and the liquid storage container and the operation of removing the liquid storage container from the holder can be performed by a series of operations. Thereby, the operativity at the time of removing a liquid container from a holder can be improved.

[Application Example 3] The holder according to Application Example 2,
The liquid container to be attached to and detached from the holder includes a first wall surface portion that becomes a bottom surface when mounted on the holder, a second wall surface portion connected to the first wall surface portion, and the first wall surface portion. A container main body having a third wall surface portion connected to the wall surface portion and facing the second wall surface portion;
In the usage posture of the liquid ejecting apparatus, the facing wall surface portion is
An opposing surface extending upward from the apparatus-side bottom wall surface, and when the liquid container is attached, an opposing surface substantially parallel to the outer surface of the third wall surface portion;
An extending surface extending in a direction away from the outer surface of the third wall surface portion from the upper end of the facing surface;
The rotation fulcrum is a holder defined by a boundary between the facing surface and the extending surface.
According to the holder described in the application example 3, the rotation fulcrum can be easily formed by using the surface of the opposing wall surface which is the configuration of the holder.

[Application Example 4] The holder according to Application Example 2,
The liquid container to be attached to and detached from the holder includes a first wall surface portion that becomes a bottom surface when mounted on the holder, a second wall surface portion connected to the first wall surface portion, and the first wall surface portion. A container main body having a third wall surface portion connected to the wall surface portion and facing the second wall surface portion;
In the usage posture of the liquid ejecting apparatus,
The opposing wall surface portion is an opposing surface extending upward from the apparatus-side bottom wall surface portion, and has an opposing surface substantially parallel to the outer surface of the third wall surface portion when the liquid container is mounted. A holder having a space for allowing the liquid container to rotate above the facing surface, the space being capable of receiving a part of the liquid container.
According to the holder described in Application Example 4, the rotation fulcrum can be easily formed by the space portion and the facing surface which is one surface of the facing wall surface portion.

[Application Example 5] The holder according to any one of Application Examples 2 to 4,
In the usage posture of the liquid ejecting apparatus, the rotation fulcrum is positioned below an engagement point where the liquid container and the apparatus-side engagement portion engage.
According to the holder described in Application Example 5, by applying an external force in a predetermined direction to a portion located above the engagement point of the liquid storage container, the engagement between the holder and the liquid storage container can be released, and the liquid can be removed from the holder. The container can be rotated and removed. Thereby, the operativity at the time of removing a liquid container from a holder can be improved more.

[Application Example 6] The holder according to any one of Application Examples 2 to 5,
The opposing wall surface portion is a hole located closer to the apparatus-side bottom wall surface portion than the rotation fulcrum, and the liquid storage container after being mounted by inserting a protrusion provided in the liquid storage container Holder with a hole that regulates the movement of the body.
According to the holder described in the application example 6, the movement of the liquid storage container can be restricted by the hole after the liquid storage container is mounted, and when the liquid storage container is removed, the liquid storage container can be removed from the hole by the rotation operation of the liquid storage container. The protrusion can be removed.

[Application Example 7] The holder according to Application Example 6,
The opposing wall surface portion has a guide groove for guiding the protrusion to the hole while restricting the movement of the protrusion in the width direction of the liquid storage container when the liquid storage container is mounted. holder.
According to the holder described in the application example 7, when the liquid storage container is mounted on the holder, the user inserts the protrusion of the liquid storage container into the guide groove so that the protrusion of the liquid storage container is inserted into the hole of the holder. It can be easily guided to the part. Therefore, the operability when the liquid container is attached to the holder can be improved.

Application Example 8 In the holder according to Application Example 7, in the usage posture of the liquid ejecting apparatus,
The guide groove is a holder formed from the upper end of the opposed wall surface portion to the hole portion.
According to the holder described in the application example 8, since the upper end of the guide groove is located at the upper end of the opposing wall surface portion, the user can easily insert the protruding portion of the liquid container into the guide groove.

[Application Example 9] The holder according to Application Example 7 or Application Example 8, wherein in the usage posture of the liquid ejecting apparatus,
The holder, wherein a width of an upper end of the guide groove is larger than a width of a lower end of the guide groove.
According to the holder described in Application Example 9, since the width of the upper end of the guide groove is formed larger, the user can more easily insert the protrusion of the liquid container into the guide groove.

[Application Example 10] The holder according to any one of Application Examples 7 to 9,
The holder, wherein the width of the guide groove monotonously decreases toward the hole.
According to the holder described in Application Example 10, the user can easily insert the protrusion of the liquid container into the guide groove and can accurately guide the protrusion toward the hole.

[Application Example 11] The holder according to any one of Application Examples 7 to 10,
The guide groove has a tapered lower guide groove whose width gradually decreases as it approaches the hole.
According to the holder described in Application Example 11, the user can smoothly guide the protrusion of the liquid container to the hole by the lower guide groove.

Application Example 12 The holder according to any one of Application Example 7 to Application Example 11, wherein the holder is in a use posture of the liquid ejecting apparatus.
The holder, wherein the lower end of the guide groove has the same width as the hole.
According to the holder described in the application example 12, the protrusion of the liquid container can be guided more smoothly from the guide groove to the hole.

[Application Example 13] The holder according to any one of Application Examples 7 to 12,
The groove bottom wall surface portion constituting the bottom surface of the guide groove and facing the liquid container has a deformable portion that can be elastically deformed in the depth direction of the guide groove,
In the usage posture of the liquid ejecting apparatus, the lower end of the deformable portion reaches the hole.
According to the holder described in the application example 13, since the deformed portion is provided, it is possible to reduce the possibility that the movement of the liquid storage container is restricted in the holder before the liquid storage container is attached to the holder.

Application Example 14 In the holder according to Application Example 13, in the usage posture of the liquid ejecting apparatus,
The upper end of the deformable portion is a container side regulating portion of the liquid container before the projection of the liquid container is inserted into the hole portion of the groove bottom wall surface portion, and the device side When the container side restricting portion to be engaged with the engaging portion is engaged with the device side engaging portion, the locus of the protrusion rotating about the engaging point where the liquid storage container is engaged, and Holder that reaches a position higher than the intersection where the groove bottom wall intersects.
According to the holder described in the application example 14, even when the container side regulation portion of the liquid storage container is engaged with the device side engagement portion before the protrusion is inserted into the hole portion, the movement of the liquid storage container is performed. The possibility of being restricted in the holder can be reduced.

[Application Example 15] The holder according to Application Example 13 or Application Example 14,
The said deformation | transformation part is a holder formed by forming a notch in the both ends of the said groove bottom wall surface part.
According to the holder described in Application Example 15, the deformed portion can be formed with a simple configuration in which notches are formed at both ends of the groove bottom wall surface portion.

[Application Example 16] The holder according to any one of Application Examples 2 to 15,
The apparatus-side bottom wall surface portion includes a first device-side regulating portion that regulates at least movement in the width direction of the liquid storage container in cooperation with the first regulation portion of the liquid storage container.
According to the holder described in the application example 16, it is possible to suppress the movement of the liquid container after the mounting.

[Application Example 17] The holder according to Application Example 16,
The shape of the said 1st apparatus side control part is a holder which is a protrusion shape in which the said 1st control part which is a notch is inserted.
According to the holder described in the application example 17, since the liquid container that moves relative to the holder at the time of mounting is provided with a notch for restricting the movement in the width direction, instead of the notch. The possibility that the mounting operation of the liquid container is restricted can be reduced as compared with the case where the protrusion is provided.

[Application Example 18] A liquid ejecting apparatus equipped with the holder according to any one of Application Examples 1 to 17.
According to the liquid ejecting apparatus described in Application Example 18, it is possible to provide a liquid ejecting apparatus equipped with a holder that has improved operability when the liquid container is attached or detached.

Application Example 19 A liquid container that can be attached to and detached from a liquid ejecting apparatus including a head that ejects liquid,
A container main body that forms a liquid storage chamber for storing a liquid therein, and is connected to a first wall surface portion that becomes a bottom surface when mounted on a holder of the liquid ejecting apparatus, and the first wall surface portion. A container main body having a second wall surface portion, and a third wall surface portion connected to the first wall surface portion and facing the second wall surface portion;
An elastic part having one end attached to the second wall surface part and having elasticity, and is used for attaching to and detaching from the holder,
The elastic part is
A container-side regulating portion that regulates movement of the liquid container by engaging with the holder;
An engagement release portion that is above the container-side regulating portion, and is elastically deformed by applying an external force in a direction of pressing against the second wall surface portion to release the engagement, and the third wall surface An engagement portion that is a contact portion between the contact portion and the holder and that can be removed from the holder by rotating the liquid container with a contact portion positioned below the engaged engagement point as a rotation fulcrum A liquid container, comprising: a release unit.
According to the liquid container described in Application Example 19, the liquid container can be rotated by the disengagement unit to release the engagement with the liquid container and remove the liquid container from the holder.

Application Example 20 The liquid container according to Application Example 19,
The disengagement portion has a first side surface facing the second wall surface portion, and a second side surface opposite to the first side surface,
When the first side surface is in contact with the second wall surface portion, the second side surface becomes the rotation fulcrum from the upper end toward the lower end in the direction in which the second and third wall surface portions oppose each other. A liquid container configured to approach.
According to the liquid container described in Application Example 20, the second side surface is configured to approach the rotation fulcrum as it goes from the upper end to the lower end. Therefore, by applying an external force to the disengagement portion in the direction approaching the second wall surface portion (the length direction of the liquid container), the force in the rotational direction when removing the liquid container while rotating is elastically released. Can be efficiently transmitted to the part. Thereby, the liquid container can be easily removed from the holder by rotating the liquid container by the operation of releasing the engagement.

  The present invention can be realized in various forms, and includes any of the above-described configurations in addition to the above-described holder, the liquid ejecting apparatus equipped with the holder, and the liquid container. It can be realized in a manner such as a method for manufacturing a holder, a method for manufacturing a liquid storage container having any of the above-described configurations, and the like.

2 is a diagram illustrating a schematic configuration of a liquid ejecting apparatus 1. FIG. 2 is an external perspective view of a holder 20 to which a cartridge 10 is mounted. FIG. FIG. 2 is a first diagram for explaining a cartridge 10. FIG. 6 is a second view for explaining the cartridge 10. It is a figure for demonstrating the circuit board. It is a figure for demonstrating the holder 20. FIG. It is a figure for demonstrating the detailed structure of an opposing wall surface part. It is CC sectional drawing of FIG. 6 (A). FIG. 6 is a diagram for explaining a state in which a cartridge 10 is attached. FIG. 6 is a second diagram for explaining how the cartridge 10 is attached. It is a figure for demonstrating the state after mounting | wearing. It is a figure for demonstrating a mode that the cartridge 10 is removed. FIG. 10 is a second view for explaining a state where the cartridge 10 is removed. It is a figure for demonstrating the mounting method of another method. It is a figure for demonstrating the mounting method of another method. It is a figure for demonstrating the cartridge 10a of 2nd Example. It is a figure for demonstrating the deformation | transformation aspect of a 1st modification.

Next, embodiments of the present invention will be described in the following order.
A. First embodiment:
B. Second embodiment:
C. Variations:

A. First embodiment:
A-1. Configuration of liquid ejector:
FIG. 1 is a diagram showing a schematic configuration of a liquid ejecting apparatus 1 including a liquid container 10 and a holder 20 as a first embodiment of the present invention. The liquid ejecting apparatus 1 is an ink jet printer 1 (hereinafter also simply referred to as “printer 1”) that performs printing by ejecting ink onto a printing paper PA. The printer 1 includes an ink cartridge 10 as a liquid container, a holder 20, a first motor 52, a second motor 50, a control unit 60, an operation unit 70, a predetermined interface 72, an optical type And a detection device 90. Hereinafter, the ink cartridge 10 is also simply referred to as “cartridge 10”.

  The holder 20 includes a print head (not shown) that ejects ink on the side facing the printing paper PA. In addition, the holder 20 is detachably mounted with the cartridge 10. Each cartridge 10 contains ink such as cyan, magenta, and yellow. The ink stored in the cartridge 10 is supplied to the print head of the holder 20 and the ink is ejected onto the printing paper PA.

  The first motor 52 drives the holder 20 in the main scanning direction. The second motor 50 conveys the printing paper PA in the sub scanning direction. The control unit 60 controls the overall operation of the printer 1.

  The optical detection device 90 is fixed at a predetermined position. When the holder 20 moves to a predetermined position, the optical detection device 90 irradiates light toward the cartridge 10 in order to detect the remaining amount of ink. Details of this will be described later.

  The control unit 60 controls the first motor 52, the second motor 50, and the print head to perform printing based on print data received from a computer 80 or the like connected via a predetermined interface 72. An operation unit 70 is connected to the control unit 60 and receives various operations from the user.

  FIG. 2 is an external perspective view of the holder 20 to which the cartridge 10 is mounted. FIG. 2 shows a state where one cartridge 10 is mounted on the holder 20 for ease of explanation. In FIG. 2, XYZ axes orthogonal to each other are attached in order to specify the direction. In the following drawings, XYZ axes orthogonal to each other are attached as necessary.

  The holder 20 is configured to be able to mount four cartridges 10. Note that the number of cartridges 10 to which the holder 20 can be mounted is not limited to four, and the configuration of the holder 20 may be changed according to the number of cartridges 10 that are required to be mounted. In the usage posture of the printer 1, the Z-axis direction is the vertical direction, and the negative Z-axis direction is the vertical downward direction. Further, the main scanning direction of the printer 1 is the Y-axis direction.

  The holder 20 has a liquid supply pipe 240. The liquid supply pipe 240 allows the cartridge 10 and the print head of the holder 20 to communicate with each other. Ink inside the cartridge 10 flows to the print head via the liquid supply tube 240. Further, an elastic member 242 is provided around the liquid supply tube 240 to prevent the ink from leaking outside. The cartridge 10 has a lever 120 as an elastic part that is elastically deformed. The user can remove the cartridge 10 from the holder 20 by operating the elastic portion 120. The details of the operation of attaching / detaching the cartridge 10 to / from the holder 20 will be described later.

A-2. Cartridge configuration:
Next, the configuration of the cartridge 10 will be described with reference to FIGS. FIG. 3 is a first diagram for explaining the cartridge 10. FIG. 3A is a side view of the cartridge 10. FIG. 3B is a front view of the cartridge 10. FIG. 3C is a rear view of the cartridge 10. FIG. 3D is a bottom view of the cartridge 10. FIG. 4 is a second view for explaining the cartridge 10. 4A is a cross-sectional view taken along the line AA in FIG. 4B and 4C are diagrams for explaining a method of detecting the remaining amount of ink. 4 (B) and 4 (C) show the cartridge 10 having a BB cross section in FIG. 4 (A).

  As shown in FIGS. 3A, 3B, and 3D, the cartridge 10 includes a container body 100, a lever 120, a liquid supply port 110, a circuit board 130, and a prism unit 170t. The container body 100, the lever 120, and the liquid supply port 110 are formed of a synthetic resin such as polypropylene.

  As shown in FIGS. 3A to 3D, the container main body 100 includes a first wall surface portion (also referred to as “bottom surface portion”) 100 a and a second wall surface portion (also referred to as “front surface portion”). 100b, a third wall surface portion (also referred to as “back surface portion”) 100c, a fourth wall surface portion (also referred to as “upper surface portion”) 100d, and a fifth wall surface portion (also referred to as “left side surface portion”). ) 100e and a sixth wall surface portion (also referred to as “right side surface portion”) 100f. The container main body 100 has a liquid storage chamber 180 for storing ink in the interior formed by the first to sixth wall surface portions 100a to 100f (FIG. 3A).

  The first wall surface portion 100 a is a wall surface portion on the Z-axis negative direction side with respect to the liquid storage chamber 180. The second wall surface portion 100 b is a wall surface portion on the X axis positive direction side with respect to the liquid storage chamber 180. The third wall surface portion 100 c is a wall surface portion on the X axis negative direction side with respect to the liquid storage chamber 180. The fourth wall surface portion 100 d is a wall surface portion on the Z axis positive direction side with respect to the liquid storage chamber 180. The fifth wall surface portion 100 e is a wall surface portion on the Y axis positive direction side with respect to the liquid storage chamber 180. The sixth wall surface portion 100 f is a wall surface portion on the Y axis negative direction side with respect to the liquid storage chamber 180. In the cartridge 10, the direction in which the first wall surface portion 100 a and the fourth wall surface portion 100 d face each other (Z-axis direction) is defined as the height direction. The direction in which the second wall surface portion 100b and the third wall surface portion 100c face each other (X-axis direction) is taken as the length direction. The direction in which the fifth wall surface portion 100e and the sixth wall surface portion 100f face each other (the Y-axis direction) is the width direction.

  The first wall surface portion 100 a constitutes a substantially rectangular bottom surface on the inner surface and the outer surface in the mounting posture mounted on the holder 20. The fourth wall surface portion 100d is a wall surface portion facing the first wall surface portion 100a, and in the mounting posture, the inner surface and the outer surface constitute a substantially rectangular upper surface. The outer surfaces of the first and fourth wall surface portions 100a and 100d are horizontal surfaces in the mounting posture.

  As shown in FIGS. 3A to 3D, the second, third, fifth, and sixth wall surface portions 100b, c, e, and f are formed on each side of the first and fourth wall surface portions 100a and d ( 4 sides). In other words, the second, third, fifth, and sixth wall surfaces 100b, c, e, and f are erected from the first wall surface portion 100a. Of these, the third, fifth, and sixth wall surface portions 100c, e, and f intersect the first and fourth wall surface portions 100a and 100d perpendicularly. That is, the outer surface of each wall surface portion 100c, e, f is in a vertical relationship with the horizontal plane in the mounting posture. The second wall surface portion 100b and the third wall surface portion 100c face each other. The fifth wall surface portion 100e and the sixth wall surface portion 100f are opposed to each other.

  As shown in FIG. 3A, the second wall surface portion 100b includes a first vertical wall portion 100b1, an inclined wall portion 100b2, and a second vertical wall portion 100b3. In the mounting posture, the first vertical wall portion 100b1 is positioned most vertically below the portion of the second wall surface portion 100b and rises vertically upward from the first wall surface portion 100a. The second vertical wall portion 100b3 is located at the uppermost position in the second wall surface portion 100b and is perpendicular to the fourth wall surface portion 100d. The inclined wall part 100b2 has one end connected to the first vertical wall part 100b1 and the other end connected to the second vertical wall part 100b3. The inclined wall portion 100b2 is inclined so that the ink in the vicinity of the second wall surface portion 100b of the liquid storage chamber 180 flows toward the liquid supply port 110. That is, the inclined wall portion 100b2 has an inner surface 100b2a that is inclined in a direction approaching the liquid supply port 110 from the other end portion that is the upper end toward the one end portion that is the lower end. The outer surface of the inclined wall portion 100b2 is also inclined in the same manner as the inner surface 100b2a.

  As shown in FIG. 3A, the first wall surface portion 100a is provided with a liquid supply port 110 through which the ink in the liquid storage chamber 180 flows. The liquid supply port 110 is provided in a portion of the first wall surface portion 100a that is closer to the third wall surface portion 100c than the second wall surface portion 100b. The liquid supply port 110 communicates with the flow passage 114 formed in the first wall surface portion 100a, and causes the ink inside the liquid storage chamber 180 to flow toward the outside (in this embodiment, the print head). As shown in FIGS. 3D and 4A, a sponge-like foam 112 is disposed in the liquid supply port 110 to prevent ink from leaking from the liquid supply port 110.

  As shown in FIGS. 3A, 3D, and 4A, a prism unit 170t is further disposed on the first wall surface portion 100a. The prism unit 170t is made of polypropylene and is transparent. As shown in FIGS. 4A to 4C, the prism unit 170t has a prism 170 for use in detecting the remaining ink amount. The prism 170 has a right-angled isosceles triangular prism shape, and is disposed so that the reflection surface 170 f (FIGS. 4B and 4C) is positioned in the liquid storage chamber 180. As shown in FIG. 4A, the prism 170 is disposed in contact with the inner surface of the second wall surface portion 100b (specifically, the first vertical wall portion 100b1). By arranging in this way, it is possible to prevent the ink traveling from the second wall surface portion 100b toward the liquid supply port 110 from being blocked by the prism 170. Thereby, the remaining amount of ink staying in the liquid storage chamber 180 can be reduced, and ink can be consumed efficiently.

  The prism 170 has different light reflection states according to the refractive index of the fluid in contact with the reflecting surface 170f. As shown in FIG. 4B, when the remaining amount of ink decreases to such an extent that the reflective surface 170f comes into contact with air, the light is emitted from the light emitting element 92 due to the difference in refractive index between the prism 170 and air. The light is reflected by the reflecting surface 170 f of the prism 170 and enters the light receiving element 94. On the other hand, as shown in FIG. 4C, when the ink is present in the liquid storage chamber 180 to such an extent that the reflective surface 170f comes into contact with the ink IK, the refractive indexes of the prism 170 and the ink are approximately the same. Therefore, the light emitted from the light emitting element 92 is slightly refracted by the reflecting surface 170f and travels through the ink IK as shown in FIG. That is, the remaining amount of ink can be detected by measuring the light incident on the light receiving element 94.

  As shown in FIGS. 3A, 3B, and 4A, a cutout (groove) 140 is provided in the first vertical wall portion 100b1 of the second wall surface portion 100b. The notch 140 is provided at a position closer to the first wall surface portion 100a than the position where the terminal group 130t is provided. Specifically, in the height direction (Z-axis direction), the notch 140 is provided closer to the first wall surface portion 100a than the position where the terminal group 130t is provided. As shown in FIG. 3B, the notch 140 is provided at the approximate center in the width direction of the first vertical wall portion 100b1.

  As shown in FIGS. 3A and 4A, the circuit board 130 including the terminal group 130t (details will be described later) is provided on the inclined wall portion 100b2 of the second wall surface portion 100b. As shown in FIG. 3A, in the length direction (X-axis direction), the notch 140 is provided so as to partially overlap the circuit board 130. That is, in the mounted state in which the cartridge 10 is mounted on the holder 20, the circuit board 130 is positioned vertically above the notch 140. In other words, when the cartridge 10 is vertically projected in the vertical direction (Z-axis direction), the notch 140 is provided so as to partially overlap the circuit board 130. In the length direction (X-axis direction), it is more preferable that the notch 140 is provided so as to overlap with a part of the terminal group 130 t included in the circuit board 130. Here, “the notch 140 overlaps a part of the terminal group 130 t included in the circuit board 130” means “the smallest polygon including the terminal group 130 t (specifically, all the inner angles are all in size). The inclusion region 800 surrounded by a convex polygon less than 180 degrees and the cutout 140 overlap at least partially. When the circuit board 130 is attached to the holder 20, the circuit board 130 is electrically connected to the control unit 60 (FIG. 1) of the printer 1, and various information (signals) is transmitted to the printer 1. Details of the circuit board 130 will be described later.

  As shown in FIGS. 3A and 4A, the lever 120 is provided on the second wall surface portion 100b. Specifically, the lower end surface of the lever 120 is attached to the inclined wall portion 100b2. The lever 120 extends upward from the lower end surface. The lever 120 has elasticity and is elastically deformed in the length direction (X-axis direction) by an external force. The lever 120 includes a container side regulating portion 124 and an engagement releasing portion 122. The container side restricting portion 124 engages with a holder 20 described later, and restricts the movement of the cartridge 10 in the height direction. Specifically, the container-side restricting portion 124 restricts the movement in the height direction on the second wall surface portion 100b side. The disengagement part 122 is a part to which an external force is applied by the user, and is used for releasing the engagement between the holder 20 and the container side restriction part 124. The disengagement unit 122 includes a first side surface 122t that faces the second wall surface portion 100b, and a second side surface 122u that is opposite to the first side surface 122t. When the first side surface 122t comes into contact with the second wall surface portion 100b, the second side surface 122u is inclined so as to approach a rotation fulcrum 166w described later as it goes from the upper end to the lower end. Hereinafter, the inclination of the second side surface 122u in this direction is also referred to as “downward inclination”.

  As shown in FIGS. 3A, 3 </ b> C, and 4 </ b> A, a protrusion 160 is provided on a portion of the third wall surface portion 100 c that occupies less than half the height in the height direction. It has been. The protrusion 160 is used to restrict the movement of the cartridge 10 after the cartridge 10 is mounted on the holder 20. Specifically, the protrusion 160 restricts the movement in the width direction and the height direction of the cartridge 10 on the third wall surface portion 100c side. The protrusion 160 has a width Wt (FIG. 3C). Details of this will be described later.

  As shown in FIGS. 3A and 3C, the third wall surface portion 100c has a rotation fulcrum 166w that contacts the holder 20 and serves as a rotation fulcrum when the cartridge 10 is removed from the holder 20 by a rotating operation. Have The rotation fulcrum 166w is positioned below the engagement point where the container side regulating portion 124 and the holder 20 are engaged in the height direction. In other words, the rotation fulcrum 166w is located below the disengagement part 122 in the height direction. The third wall surface portion 100c is formed with an air opening hole (not shown) for introducing air into the interior of the third wall surface 100c according to the consumption of ink in the liquid storage chamber 180.

  FIG. 5 is a diagram for explaining the circuit board 130. FIG. 5A shows the configuration of the surface of the circuit board 130. FIG. 5B shows the circuit board 130 viewed from the side. The surface of the circuit board 130 is a surface exposed to the outside when attached to the cartridge 10. An arrow Zt shown in FIG. 5A indicates the direction in which the cartridge 10 is inserted into the holder 20.

  As shown in FIG. 5A, a boss groove 131 is formed at the upper end of the circuit board 130, and a boss hole 132 is formed at the lower end of the circuit board 130. The boss groove 131 and the boss hole 132 are used to attach the circuit board 130 to the container body 100.

  The circuit board 130 includes a terminal group 130t including nine terminals 130a to 130i disposed on the surface, and a storage unit 133. The storage unit 133 disposed on the back side stores information about the ink of the cartridge 10 (for example, ink remaining amount and ink color). The terminals 130a to 130i are formed in a substantially rectangular shape, and are arranged so as to form two rows substantially perpendicular to the insertion direction Zt. Of the two rows, the row located in the rear side in the insertion direction Z, that is, the lower side in FIG. 5A is referred to as a lower row (first row). A column located on the upper side in 5 (A) is referred to as an upper column (second column). As described above, the outline of the inclusion region 800 surrounded by the smallest convex polygon that includes the terminal group 130t is illustrated by a dotted line. In this embodiment, the inclusion region 800 is a hexagon.

  A central portion of each of the terminals 130 a to 130 i includes a contact portion cp that comes into contact with a corresponding terminal among the device-side terminals attached to the holder 20. The contact portions cp of the terminals 130a to 130d forming the upper row and the contact portions cp of the terminals 130e to 130i forming the lower row are alternately arranged to form a so-called staggered arrangement. Further, the terminals 130a to 130d forming the upper row and the terminals 130e to 130i forming the lower row are also arranged in a staggered manner so that the terminal centers are not aligned in the insertion direction Zt. doing. In addition, the circuit board 130 is attached to the cartridge 10 so that the rows closer to the notches 140 of the cartridge 10 include more terminals. That is, the circuit board 130 is attached to the cartridge 10 so that the lower row (first row) is lower than the upper row (second row) in the height direction of the cartridge 10.

The terminals 130a to 130d forming the upper row and the terminals 130e to 130i forming the lower row have the following functions (uses), respectively.
<Upper row>
(1) Mounting detection terminal 130a
(2) Reset terminal 130b
(3) Clock terminal 130c
(4) Mounting detection terminal 130d
<Lower row>
(5) Mounting detection terminal 130e
(6) Power supply terminal 130f
(7) Ground terminal 130g
(8) Data terminal 130h
(9) Mounting detection terminal 130i

  The four attachment detection terminals 130a, 130d, 130e, and 130i are used to detect the quality of electrical contact with the apparatus-side terminals, and can also be referred to as “contact detection terminals”. The other five terminals 130b, 130c, 130f, 130g, and 130h are terminals for the storage unit 133.

A-3. Holder configuration:
Next, a detailed configuration of the holder 20 will be described with reference to FIGS. FIG. 6 is a view for explaining the holder 20. 6A is a first external perspective view of the holder 20, and FIG. 6B is a second external perspective view of the holder 20. In the second external perspective view, the illustration of the outer peripheral wall forming the holder 20 is partially omitted for easy explanation. FIG. 7 is a diagram for explaining a detailed configuration of the opposing wall surface portion 25c. FIG. 7A is a view of the opposing wall surface portion 25c as viewed from the X axis positive direction side. FIG. 7B is a partially enlarged view of FIG. FIG. 8 is a cross-sectional view taken along the line CC in FIG.

  As shown in FIG. 6A, the holder 20 has a concave shape in which a part thereof is opened so that the cartridge 10 can be attached and detached. The holder 20 includes a device-side bottom wall surface portion (also referred to as “bottom surface portion”) 25a, an engagement portion side wall surface portion (“front surface portion”) 25b, and an opposing wall surface portion (also referred to as “back surface portion”) 25c. It has a first apparatus side wall surface part (also referred to as “left side part”) 25e and a second apparatus side wall surface part (also referred to as “right side part”) 25f. These wall surface portions 25a, b, c, e, and f form a cartridge housing chamber for housing the cartridge 10. Each wall portion 25a, b, c, e, f is formed of a synthetic resin such as polypropylene.

  The apparatus-side bottom wall surface portion 25 a forms a bottom surface in the usage posture of the printer 1. The opposing wall surface portion 25c, the engaging portion side wall surface portion 25b, the first device side wall surface portion 25e, and the second device side wall surface portion 25f are erected from the device side bottom wall surface portion 25a. The opposing wall surface portion 25c and the engaging portion side wall surface portion 25b are in a facing relationship, and the first device side wall surface portion 25e and the second device side wall surface portion 25f are in a facing relationship.

  A liquid supply pipe 240 and a seal member 242 are attached to the apparatus-side bottom wall surface portion 25a. One end side of the liquid supply pipe 240 is connected to the print head 21 (FIG. 8) attached to the back surface (surface on the Z-axis negative direction side) of the apparatus-side bottom wall surface portion 25a. Further, when the cartridge 10 is mounted in the holder 20, the other end side of the liquid supply pipe 240 is connected to the liquid supply port 110 (FIG. 3A) of the cartridge 10. The seal member 242 is an elastic member such as synthetic rubber. The seal member 242 is disposed around the liquid supply pipe 240 and prevents the ink from leaking to the outside when the cartridge 10 is mounted on the holder 20. Further, as shown in FIG. 8, a porous metal filter 240t that partially contacts the foam 112 (FIG. 4A) in the liquid supply port 110 is provided on the other end side of the liquid supply pipe 240. It has been. As the filter 240t, for example, a stainless mesh or a stainless nonwoven fabric can be used. The filter 240t can be omitted.

  As shown in FIG. 6 (B), on the apparatus side bottom wall surface portion 25a, four through holes 290 (only three are shown in the figure) corresponding to the number (four) of cartridges 10 to be mounted, Four first device-side regulating portions 270 (only three are shown in the figure) are provided. Further, four contact mechanisms 280 (only three are shown in the figure) are arranged on the apparatus-side bottom wall surface portion 25a in correspondence with the number of cartridges 10 to be mounted.

  The through hole 290 is used to detect the remaining amount of ink in the cartridge 10 using an optical detection device (described later) provided on the negative side of the holder 20 in the Z-axis direction. Specifically, the light emitted from the optical detection device is transmitted and the light reflected from the cartridge 10 is transmitted.

  The shape of the first device side regulating portion 270 is a protrusion. Moreover, the 1st apparatus side control part 270 is carrying out the pointed shape as it goes upwards. The first apparatus-side restricting portion 270 is inserted with a notch 140 as a first restricting portion provided in the cartridge 10 to restrict the movement of the cartridge 10 in the width direction (Y-axis direction). Note that the first device-side restriction unit 270 is also referred to as a restriction pin 270. The restriction pin 270 may be integrally formed with the holder 20 as in this embodiment, or may be attached to the apparatus-side bottom wall surface portion 25a as a separate member.

  The contact mechanism 280 is used to electrically connect the circuit board 130 of the cartridge 10 and the control unit 60 of the printer 1. The contact mechanism 280 includes a plurality of electrical contact members (also referred to as “terminals”) 280 a to 280 i for contacting the terminals 130 a to 130 i of the circuit board 130. The number of electrical contact members 280a to 280i corresponds to the number of terminals 130a to i (FIG. 5A) of the circuit board 130, and there are nine in this embodiment. The contact mechanism 280 is electrically connected to the control unit 60.

  The holder 20 further includes a device-side engagement portion 260 disposed adjacent to the engagement portion side wall surface portion 25b. The device side engaging portion 260 is at a predetermined height position from the device side bottom wall surface portion 25a. The device-side engaging portion 260 restricts the movement of the cartridge 10 in the height direction when the cartridge 10 is mounted by engaging with the container-side restricting portion 124 (FIG. 3B) of the cartridge 10.

  As shown in FIG. 7A, the opposing wall surface portion 25c includes a standing wall portion 216, a guide groove 200t, and a hole 202 formed in the standing wall portion 216. In the use posture, the standing wall portion 216 extends upward (Z-axis positive direction) from the apparatus-side bottom wall surface portion 25a. The standing wall portion 216 includes an opposing surface 216u, an extending surface 216t, and an upper surface 216s in order from the bottom. In the use posture, the facing surface 216u extends vertically upward from the apparatus-side bottom wall surface portion 25a. In other words, the facing surface 216u forms a surface substantially parallel to the outer surface of the third wall surface portion 100c (FIG. 3A) of the cartridge 10 when the cartridge 10 is mounted on the holder 20. For easy understanding, the opposing surface 216u is single-hatched.

  The extending surface 216t extends from the upper end of the facing surface 216u toward the outside of the holder 20. In other words, in the mounted state, the cartridge 10 extends in a direction away from the outer surface of the third wall surface portion 100c (FIG. 3A). In this embodiment, the extending surface 216t constitutes an inclined surface that is inclined with respect to the vertical direction. The opposed wall surface portion 25 c has a rotation fulcrum 216 w corresponding to the rotation fulcrum 166 w of the cartridge 10. The rotation fulcrum 216w is defined by the boundary between the facing surface 216u and the extending surface 216t. In other words, the rotation fulcrum 216w can be said to be the upper end of the facing surface 216u.

  The upper surface 216 s extends upward from the lower end of the extending surface 216 t in the usage posture of the printer 1. Similarly to the extended surface 216t, the upper surface 216s is also inclined with respect to the vertical direction.

  As shown in FIG. 8, by forming the facing surface 216u, the extending surface 216t, and the upper surface 216s, a space 216sp that can receive a part of the cartridge 10 when the cartridge 10 is removed while rotating is formed.

  Returning to FIG. 7, the description will be continued. The protrusion 160 (FIG. 3A) of the cartridge 10 is inserted into the substantially rectangular hole 202. Thereby, in the mounted state, the movement of the cartridge 10 in the width direction (Y-axis direction) and the height direction (Z-axis direction) is restricted within a predetermined range. The width Wb of the hole 202 is substantially the same as the width Wt of the protrusion 160 of the cartridge 10. Further, since the cartridge 10 is attached to and detached from the holder 20 by a rotation operation described later, in the mounted state, the hole portion 202 of the holder 20 and the protruding portion 160 (FIG. 3C) of the cartridge 10 in the height direction. The gap is larger than the gap in the width direction.

  The guide groove 200t guides the protrusion 160 to the hole 202 while restricting the movement of the cartridge 10 in the width direction when the cartridge 10 is mounted in the holder 20. As shown in FIG. 7B, the guide groove 200t is formed from the upper end of the opposing wall surface portion 25c to the hole portion 202. For easy understanding, the hole 202 is single-hatched in FIG. 7B. By providing the guide groove 200t, it is not necessary to provide the holder 20 with another member for positioning the cartridge 10 such as a partition wall, so that the holder 20 can be reduced in size. The upper end of the guide groove 200t does not need to be positioned at the upper end of the opposing wall surface portion 25c, and may be positioned in the middle of the opposing wall surface portion 25c in the height direction.

  The width Wa of the upper end 200ta of the guide groove 200t is larger than the width Wb of the lower end 200tb. The lower end 200 tb has the same width as the hole 202. Further, the width Wa of the upper end 200ta is larger than the width Wt of the protrusion 160 of the cartridge 10 (FIG. 3C). Further, the width of the guide groove 200t monotonously decreases from the upper end 200ta toward the lower end 200tb (that is, the hole 202). Here, “monotonically decreasing” may include a portion having a constant width as long as it does not include a portion whose width increases as it approaches the lower end 200 tb from the upper end 200 ta. More specifically, the guide groove 200t has a tapered lower guide groove 200tu whose width gradually decreases as it approaches the hole 202. In addition, the broken line is attached | subjected to the boundary of the lower guide groove 200tu and another part.

  As shown in FIGS. 7A and 8, the opposing wall surface portion 25 c is further in the depth direction of the guide groove 200 t (X-axis direction, the direction in which the apparatus-side engaging portion 260 and the opposing wall surface portion 25 c face each other). It has a deformable portion 212 that can be elastically deformed. In other words, the deforming portion 212 is configured to be elastically deformable toward the outside of the cartridge housing chamber that houses the cartridge 10. The deformed portion 212 is formed by making a notch 214 at both ends of the groove bottom wall surface portion 213 constituting the bottom surface of the guide groove 200t. The notch 214 penetrates the groove bottom wall surface 213. The deformation portion 212 extends from a portion in contact with the hole portion 202 of the groove bottom wall surface portion 213 to a height equal to or higher than a predetermined height. The predetermined height is higher than the intersection where the trajectory of the protrusion 160 (FIG. 4A) when the cartridge 10 is mounted in a predetermined method and the groove bottom wall surface 213 intersect. Refers to the part. Details of this will be described later.

A-4. Attachment of Cartridge FIG. 9 is a diagram for explaining how the cartridge 10 is attached to the holder 20. FIG. 9A is a first diagram showing the state of attachment, and FIG. 9B is a second diagram showing the state of attachment. FIG. 9 is a view showing a GG section of the cartridge 10 of FIG. 3B and a section of the holder 20 corresponding to the GG section. Hereinafter, a mounting method (normal mounting method) that is normally employed when the user mounts the cartridge 10 in the holder 20 will be described.

  In the normal mounting method, as shown in FIG. 9A, the cartridge 10 is tilted so that the protrusion 160 of the third wall surface portion 100c is in contact with the opposing wall surface portion 25c, and mounting to the holder 20 is performed. Specifically, the cartridge 10 is moved vertically downward as indicated by the arrow Zw while the protrusion 160 is inserted into the guide groove 200t. At this time, since the width Wa of the upper end of the guide groove 200t is larger than the width Wt of the protrusion 160 of the cartridge 10, the protrusion 160 can be easily inserted into the guide groove 200t.

  As shown in FIG. 9B, when the protrusion 160 of the cartridge 10 moves to a position where it contacts the deformation portion 212 and an external force is applied by the protrusion 160, the deformation portion 212 moves outward (X-axis negative direction). It is elastically deformed. As described above, the deformation portion 212 is elastically deformed, so that the cartridge 10 can be smoothly mounted on the holder 20.

  FIG. 10 is a second view for explaining how the cartridge is attached to the holder. FIG. 10A is a view showing a GG section of the cartridge 10 of FIG. 3B and a section of the holder 20 corresponding to the GG section, similarly to FIG. FIG. 10B is a perspective view of the vicinity of the regulation pin 270 of FIG.

  As shown in FIG. 10A, when the cartridge 10 further moves vertically downward, it is guided by the guide groove 200t, and the protrusion 160 is easily inserted into the hole 202. In this state, the container side restricting portion 124 of the cartridge 10 is not engaged with the device side engaging portion 260 of the holder 20.

  When the protrusion 160 is inserted into the hole 202, the restriction pin 270 of the holder 20 is inserted into the notch 140 of the cartridge 10, as shown in FIG. In this state, the container side restricting portion 124 is engaged with the device side engaging portion 260 by pushing the second wall surface portion 100b side vertically downward. During this pushing operation, the movement in the width direction on the second wall surface portion 100b side to which the circuit board 130 is attached is restricted, so that the cartridge 10 can be accurately positioned with respect to the holder 20. That is, the terminals 130a to 130i (FIG. 5) of the circuit board 130 of the cartridge 10 and the device side terminals 280t of the contact mechanism 280 (there are 9 terminals, but collectively referred to as the device side terminals 280t) after mounting are not connected. The possibility of being in contact can be reduced. Further, since the notch 140 is provided at a position closer to the first wall surface portion 100 a than the circuit board 130, the terminals 130 a to 130 i of the circuit board 130 are connected to the contact mechanism 280 when the cartridge 10 is attached to the holder 20. The restriction pin 270 is inserted into the notch 140 of the cartridge 10 before contacting the device side terminal 280t. That is, the terminals 130a to 130i of the circuit board 130 can be brought into contact with the contact mechanism 280 in a state where the regulation pin 270 is inserted into the notch 140 and the movement in the width direction (Y-axis direction) of the cartridge 10 is regulated to some extent. . Accordingly, the terminals 130a to 130i can be brought into contact with the contact mechanism 280 more reliably when the cartridge 10 is mounted on the holder 20.

  As described above, since the guide groove 200t is formed in the opposing wall surface portion 25c, the protruding portion 160 can be easily guided to the hole portion 202. In particular, since the guide groove 200t has the lower guide groove 200tu, the protrusion 160 can be more smoothly guided to the hole 202.

  FIG. 11 is a diagram for explaining a state after mounting. FIG. 11A is a view showing a GG section of the cartridge 10 of FIG. 3B and a section of the holder 20 corresponding to the GG section, similarly to FIG. FIG. 11B is a perspective view of the mounted state. In FIG. 11A, ink stored in the liquid storage chamber 180 is represented by dots.

  As shown in FIG. 11A, in the mounted state, the container-side restricting portion 124 is engaged with the device-side engaging portion 260, whereby the movement of the cartridge 10 in the height direction is restricted. Here, with respect to the vertical direction (Z-axis direction) in the usage posture of the holder 20, the rotation fulcrum 216w is positioned below the engagement point 124t. In the mounted state, the lever 120 is engaged with the device-side engaging portion 260 in a state of being closer to the second wall surface portion 100b than in the no-load state. Therefore, when the lever 120 presses the container main body 100 toward the opposing wall surface portion 25c, the movement of the cartridge 10 in the length direction (X-axis direction) is restricted. Further, in the mounted state, the liquid supply pipe 240 is connected to the liquid supply port 110. In addition, each terminal of the circuit board 130 comes into contact with each corresponding electrical contact member 280a to 280i of the contact mechanism 280, and the ink color and the ink remaining between the cartridge 10 and the control unit 60 of the printer 1 (FIG. 1). Various information such as quantity information is transmitted. Further, the remaining amount of ink is detected using the optical detection device 90 at a predetermined timing. In the mounted state, ink is supplied to the print head 21 through the liquid supply port 110 and the liquid supply pipe 240 by suction from the print head 21.

  In the mounted state, the movement of the cartridge 10 is mainly restricted by the hole 202 of the holder 20, the device-side engagement portion 260, and the restriction pin 270. Specifically, the hole 202 and the protrusion 160 cooperate to regulate the movement in the width direction (Y-axis direction) and the height direction (Z-axis direction) on the third wall surface 100c side. The joint portion 260 and the container side regulating portion 124 cooperate to regulate the movement in the height direction on the second wall surface portion 100b side, and the regulation pin 270 and the notch 140 cooperate to cooperate with the second wall surface portion. The movement in the width direction on the 100b side is restricted.

  Here, when performing printing or the like, the holder 20 and the cartridge 10 move in the main scanning direction (the Y-axis direction and the width direction of the cartridge 10). That is, the cartridge 10 receives an external force (inertial force) in the width direction. When the cartridge 10 receives an external force, as shown in FIG. 11B, the cartridge 10 rotates in the rotation direction including the width direction component around the liquid supply port 110 (FIG. 11A). Specifically, the second wall surface portion 100b side portion rotates in the direction of arrow YR1, and the third wall surface portion 100c side portion rotates in the direction of arrow YR2. Here, the circuit board 130 is provided on the second wall surface portion 100b. Therefore, by providing the notch 140 for restricting the movement in the width direction in the second wall surface portion 100b, the movement (displacement) of the circuit board 130 relative to the holder 20 can be achieved rather than providing the notch 140 in the first wall surface portion 100a. ) Can be suppressed. Thereby, the electrical connection between the mounted circuit board 130 (specifically, the terminal group 130t) and the printer 1 can be favorably maintained. In particular, in the present embodiment, as described above, the circuit board 130 is disposed so as to partially overlap the notch 140 in the length direction (FIG. 3A). Therefore, the movement (displacement) of the circuit board 130 (specifically, the terminal group 130t) with respect to the holder 20 can be suppressed to a minimum. In addition, as described above, in the length direction (X-axis direction), it is more preferable that the notch 140 is provided so as to overlap with a part of the terminal group 130 t included in the circuit board 130. By doing so, the movement (displacement) of the terminal group 130t with respect to the holder 20 can be further suppressed to a minimum.

  Moreover, when providing the groove | channel for regulating the movement of the width direction in the 1st wall surface part 100a (bottom surface), the member for forming (regulating) a groove | channel is needed around. In this embodiment, since the notch 140 for restricting the movement in the width direction is provided in the second wall surface portion 100b, the size of the cartridge in the length direction (X-axis direction) can be reduced.

  Further, the notch 140 can suppress the movement of the prism 170 in the width direction by cooperating with the restriction pin 270. In particular, in this embodiment, the prism 170 is disposed in contact with the inner surface of the second wall surface portion 100b in which the notch 140 is formed (FIG. 4A). Thereby, the movement (deviation) of the prism 170 in the width direction can be suppressed to the minimum, and the remaining ink amount can be detected with high accuracy. Furthermore, the possibility that the flow of ink toward the liquid supply port 110 is blocked by the prism 170 can be reduced. Thereby, the ink inside the liquid storage chamber 180 can be efficiently consumed, and the ink remaining amount can be reduced.

  In addition, since the first restricting portion is the notch 140, the cartridge 10 is made in comparison with the case where the first restricting portion is formed in a protruding shape (in this case, the first device-side restricting portion 270 is concave). The possibility of the first restricting portion (notch 140) interfering with the holder 20 when detaching from the holder 20 can be reduced. Thereby, generation | occurrence | production of malfunctions, such as a cartridge 10 and the holder 20 being damaged, can be suppressed.

  Thus, since the cartridge 10 has the notch 140 for restricting the movement in the width direction on the second wall surface portion 100b to which the circuit board 130 is attached, the displacement of the circuit board 130 with respect to the holder 20 can be suppressed. Therefore, the possibility that the electrical connection between the circuit board 130 and the printer 1 is cut off can be reduced. In addition, since the displacement of the circuit board 130 with respect to the holder 20 can be suppressed, more terminals can be provided on the circuit board 130. As a result, more information can be transmitted between the circuit board 130 and the printer 1.

A-5. Removal of Cartridge FIG. 12 is a diagram for explaining how the cartridge 10 is removed from the holder 20. FIG. 12A is a first diagram showing the state of removal, and FIG. 12B is a diagram for explaining one of the effects of this embodiment. FIG. 12A is a view showing a GG section of the cartridge 10 of FIG. 3B and a section of the holder 20 corresponding to the GG section.

  As shown in FIG. 12A, when removing the cartridge 10 from the holder 20, the direction (X) in which the disengagement part 122 is brought close to (pressed against) the container main body 100 (specifically, the second wall surface part 100b). It is elastically deformed in the negative axis direction. Then, the engagement between the apparatus side engaging portion 260 and the container side regulating portion 124 is released. The disengagement portion 122 is formed such that the second side surface 122u is inclined at a predetermined angle θ from the vertical direction when the first side surface 122t comes into contact with the second wall surface portion 100b. By forming the engagement release portion 122 in this way, when an external force F is applied to the engagement release portion 122 in the negative X-axis direction, the engagement is released and the cartridge 10 is efficiently removed from the holder 20. Can be removed. The reason for this will be described with reference to FIG.

  As shown in FIG. 12B, in order to release the engagement, the engagement release portion 122 is engaged in a direction (X-axis negative direction) in which the engagement release portion 122 approaches the container body 100 (specifically, the second wall surface portion 100b). Consider a case where an external force F is applied to the combination release unit 122. The external force F can be decomposed into a force F1 of a tangential component of the circumference around the rotation fulcrum 216w and a radial component F2. If the second side surface 122u is inclined (downwardly inclined) so as to approach the rotation fulcrum 216w as it goes from the upper end to the lower end, the force F1 of the tangential component can be efficiently transmitted to the disengagement unit 122. Therefore, when an external force is applied to the disengagement unit 122 in the direction of disengaging the container side restriction unit 124 and the device side engagement unit 260 (X-axis negative direction), the engagement is released, The cartridge 10 can be easily rotated in the direction in which the cartridge 10 is removed (arrow Rd).

  FIG. 13 is a second view for explaining how the cartridge 10 is removed from the holder 20. FIG. 13A is a diagram illustrating a state in which the cartridge 10 rotates about the rotation fulcrum 216w. FIG. 13B is a second diagram showing the state in which the cartridge 10 rotates about the rotation fulcrum 216w. FIG. 13 is a view showing a GG section of the cartridge 10 in FIG. 3B and a section of the holder 20 corresponding to the GG section.

  As shown in FIG. 13A, when an external force F having a predetermined direction component (X-axis negative direction component) is applied to the disengaging portion 122, the cartridge 10 rotates in the direction of the arrow Rd with the rotation fulcrum 216w as a fulcrum. . Further, since the space 216sp is positioned above the rotation fulcrum 216w, the holder 20 does not hinder the rotational movement of the cartridge 10 in a predetermined direction.

  As shown in FIG. 13B, when the rotational movement in the predetermined direction proceeds, the third wall surface portion 100c of the cartridge 10 comes into contact with the upper surface 216s. In this state, the rotational movement in a predetermined direction is inhibited by the upper surface 216s as a barrier. However, in this state, the second wall surface portion 100b side is lifted vertically upward with respect to the holder 20 to such an extent that the user can easily grasp and pick up the second wall surface portion 100b side of the cartridge 10.

  As described above, the cartridge 10 is configured such that the rotation fulcrum 166w is located below the engagement point 124t and the engagement release portion 122 is located above the engagement point 124t (FIG. 11A). ). Therefore, as shown in FIG. 12A, the cartridge 10 can be easily detached from the holder 20 with the rotation fulcrum 216w as a fulcrum by applying an external force in a predetermined direction (X-axis negative direction) to the disengagement part 122. it can. That is, the operation of releasing the engagement between the container side regulating portion 124 and the apparatus side engaging portion 260 and the operation of removing the cartridge 10 from the holder 20 can be performed by a series of operations (FIGS. 12 and 13). Therefore, it is possible to provide the holder 20 and the ink cartridge 10 with improved operability for removal to the user. Further, the rotation fulcrum 216w of the holder 20 can be easily defined by the facing surface 216u and the extending surface 216t of the facing wall portion 25c.

A-6. Attachment of Cartridge by Another Method FIG. 14 is a diagram for explaining an attachment method of another method. 14A to 14C are illustrated in time series. 14A to 14C are views showing a GG section of the cartridge 10 in FIG. 3B and a section of the holder 20 corresponding to the GG section. 14A to 14C, an attachment method (engagement) in which the cartridge 10 is inclined and inserted into the holder 20 so that the second wall surface portion 100b is vertically lower than the third wall surface portion 100c. A mounting method) will be described.

  As shown in FIG. 14A, in the engagement mounting method, the container side regulating portion 124 engages with the device side engaging portion 260 before the protruding portion 160 is inserted into the hole portion 202. In this case, the cartridge 10 is mounted on the holder 20 by rotating the cartridge 10 with the engagement point 124t as a rotation fulcrum. At this time, the protrusion 160 draws a rotation locus Rm. The rotation trajectory Rm intersects with the deformation unit 212. That is, the deforming portion 212 is located at a point where the rotation locus Rm intersects the holder 20. In other words, in the use posture, the deforming portion 212 is formed so as to reach a position higher than the intersection Rx where the rotation locus Rm and the groove bottom wall surface 213 intersect in the groove bottom wall surface 213. As shown in FIG. 14A, in the state immediately after the projecting portion 160 contacts the groove bottom wall surface portion 213, the projecting portion 160 contacts the deforming portion 212.

  As shown in FIG. 14B, when the third wall surface 100c side is pushed vertically downward, the deforming portion 212 is pushed in the outer direction (X-axis negative direction) of the holder 20 by the protrusion 160, and elastically deformed. To do. Due to the elastic deformation of the deformation portion 212, the movement of the cartridge 10 is not restricted, and the third wall surface portion 100c side can be pushed vertically downward. As a result, the cartridge 10 can be mounted on the holder 20 as shown in FIG.

  FIG. 15 is a diagram for explaining another mounting method. FIG. 15A is a first diagram for explaining a mounting method to the holder 20. FIG. 15B is a second diagram for explaining a mounting method to the holder 20. 15A and 15B are views showing a GG section of the cartridge 10 of FIG. 3B and a section of the holder 20 corresponding to the GG section.

  FIG. 15A shows a mounting method (upper access mounting method) in which the cartridge 10 is mounted on the holder 20 from directly above the holder 20 without tilting the cartridge 10. Also in such a mounting method, since the deformable portion 212 can be elastically deformed, the cartridge 10 can be mounted in the holder 20 without restricting the movement of the cartridge 10.

  FIG. 15B shows a mounting method (front access mounting method) in which the cartridge 10 is mounted on the holder 20 without inserting the protrusion 160 into the guide groove 200t. In the present embodiment, since the holder 20 has the deforming portion 212, the movement of the cartridge 10 is restricted, and the possibility that the holder 20 cannot be attached to the holder 20 can be reduced. Therefore, it is not necessary to provide a member for preventing the mounting in a specific mounting method (a mounting method in which movement is restricted) in the opening of the holder 20. Therefore, the cartridge 10 can be mounted on the holder 20 by the front access mounting method.

  As described above, since the holder 20 has the deforming portion 212, the possibility that the movement of the cartridge 10 is restricted in the holder 20 before the cartridge 10 is mounted on the holder 20 can be reduced. Thereby, since it is not necessary to provide a mechanism for prohibiting a specific mounting method in the opening of the holder 20, the operability when the cartridge 10 is attached to the holder 20 can be improved while reducing the number of parts of the holder 20. That is, the user can mount the cartridge 10 on the holder 20 using various mounting methods without being limited by the mounting method.

B. Second embodiment:
FIG. 16 is a view for explaining the cartridge 10a of the second embodiment. FIG. 16A is a cross-sectional view of the cartridge 10a, and corresponds to the AA cross section of FIG. FIG. 16B is a diagram for explaining the prisms 170a to 170c of the cartridge 10a. The difference from the first embodiment is the configuration of the prisms 170a to 170c, and the other configurations are the same as those of the first embodiment. Therefore, the same components are denoted by the same reference numerals and the description thereof is omitted. To do. The configuration of the holder 20 to which the cartridge 10a is mounted and the configuration of the printer 1 are the same as those in the first embodiment.

  As shown in FIG. 16A, the first wall surface portion 100a is provided with first to third prisms 170a to 170c. As shown in FIG. 16B, each of the prisms 170a to 170c includes a right-angled isosceles triangular prism-shaped portion including the reflecting surface 170f. The distances between the reflecting surfaces of the prisms 170a to 170c and the first wall surface portion 100a are different from each other. Specifically, the prism closer to the notch 140 is arranged such that the distance from the first wall surface portion 100a is longer. That is, the first prism 170a having the highest height among the prisms 170a to 170c is disposed in contact with the inner surface of the second wall surface portion 100b in which the notch 140 is provided. Further, as the height of the prism decreases, the prism is disposed at a position away from the second wall surface portion 100b. By arranging the first to third prisms 170a to 170c in this way, the prisms arranged closer to the notch 140, the optical detectors (disposed on the reflection surface 170f and the Z-axis negative direction side) ( The distance to (not shown) increases. The optical detection device may be arranged in the printer 1 in accordance with the number of prisms to detect the remaining amount, or one optical detection device is moved directly below each prism 170a to 170c to remain. Quantity detection may be performed.

  As described above, by arranging the plurality of prisms 170a to 170c having different heights of the reflection surface 170f, it is possible to detect the ink remaining amount of the cartridge 10a in more detail. Further, as the distance between the optical detection device and the reflection surface 170f becomes longer, a relative positional shift between the reflection surface 170f and the optical detection device occurs, and the detection accuracy of the remaining amount of ink tends to decrease. However, in this embodiment, the prism 170a having a longer distance between the optical detection device and the reflecting surface 170f is arranged closer to the notch 140 so that the displacement with respect to the holder 20 can be further suppressed. Therefore, variation in the detection accuracy of the remaining amount of ink using the prisms 170a to 170c can be reduced. Since the cartridge 10a of the second embodiment has the notch 140 as in the first embodiment, the movement in the width direction (Y-axis direction) can be regulated in cooperation with the regulation pin 270 of the holder 20. Therefore, the electrical connection between the circuit board 130 (specifically, the terminal group 130t) and the printer 1 can be maintained well.

C. Variations:
In addition, elements other than the elements described in the independent claims of the claims in the constituent elements in the above-described embodiments are additional elements and can be omitted as appropriate. Further, the present invention is not limited to the above-described examples and embodiments, and can be implemented in various forms without departing from the gist thereof. For example, the following modifications are possible.

C-1. First modification:
In the above embodiment, the prisms 170 and 170a are disposed in contact with the inner surface of the second wall surface portion 100b (FIGS. 4A and 16A), but the invention is not limited to this. You may arrange | position apart from the 2nd wall surface part 100b. Even in this case, the movement (displacement) of the circuit board 130 with respect to the holder 20 can be suppressed. In this case, it is preferable to adopt the following modification. FIG. 17 is a diagram for explaining a modification of the first modification. 17A to 17E are views showing the vicinity of the prism 170. FIG. The difference from the first embodiment is that the prism 170 is disposed apart from the inner surface of the first vertical wall portion 100b1, and the protruding member 175a is provided between the prism 170 and the first vertical wall portion 100b1. ˜175e. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  The protruding members 175 a to 175 e are protrusions that extend from the first wall surface portion 100 a toward the liquid storage chamber 180. As the shape, a rectangular parallelepiped shape (FIG. 17A, reference numeral 175a), a triangular prism shape (FIGS. 17B to 17E, reference numerals 175b to 175e) and the like can be adopted. Further, the protruding members 175a, b, e are arranged so as to contact both the prism 170 and the first vertical wall portion 100b1. Thus, by having the projecting members 175a to 175e, it is possible to prevent ink from being blocked by the prism 170, and the ink on the first vertical wall portion 100b1 side is supplied to the liquid supply port 110 (FIG. 4A). Can lead to. Therefore, the ink in the liquid storage chamber 180 (FIG. 4A) can be consumed efficiently.

C-2. Second modification:
In the above embodiment, the cartridge 10 has the prisms 170 and 170a to 170c used for detecting the remaining amount of ink (FIGS. 4A and 16A), but can be omitted. Further, a sensor using a piezoelectric element or a sensor using an electrode may be employed for detecting the remaining ink amount instead of the prism used in the optical ink remaining amount detecting method. Even in this case, the movement (displacement) of the circuit board 130 with respect to the holder 20 can be suppressed by the cooperation of the notch 140 of the cartridge 10 and the restriction pin 270 of the holder 20 in the same manner as in the above embodiment. Similarly to the above-described embodiment, the operability when the cartridge 10 is attached to and detached from the holder 20 can be improved by the rotation fulcrums 166w and 216w and the deforming portion 212 of the holder 20.

C-3. Third modification:
In the above embodiment, the cartridge 10 uses the notch 140 as the first restricting portion, but the shape is not limited to this. For example, a protrusion may be provided as the first restricting portion on the second wall surface portion 100b. In this case, the holder 20 is provided with a recess in which a protrusion is inserted instead of the restriction pin 270. Even in this case, since the movement in the width direction of the cartridges 10 and 10a after the mounting is suppressed, the electrical connection between the circuit board 130 and the printer 1 is maintained well. Moreover, although the notch 140 was provided in the approximate center of the width direction of the 1st vertical wall part 100b1 (FIG. 3 (B)), it is not limited to this. For example, the notch 140 may be formed at one end in the width direction of the first vertical wall portion 100b1. That is, the notch 140 of the above embodiment is formed by the first vertical wall portion 100b1 on both sides in the width direction, but only one side is formed by the first vertical wall portion 100b1, and the other side is open. May be. Even in this case, in the mounted state, the movement of the cartridge 10 in the width direction (one movement in the width direction) can be restricted, and the displacement of the circuit board 130 relative to the holder 20 can be suppressed. Similarly to the above-described embodiment, the operability when the cartridge 10 is attached to and detached from the holder 20 can be improved by the rotation fulcrums 166w and 216w and the deforming portion 212 of the holder 20.

C-4. Fourth modification:
In the above embodiment, the cartridge 10 has a shape in which the second wall surface portion 100b includes the first vertical wall portion 100b1, the inclined wall portion 100b2, and the second vertical wall portion 100b3. Can adopt any shape. For example, it is good also as a substantially rectangular parallelepiped shape which does not have the inclination wall part 100b2, and the shape in which the 2nd wall surface part 100b inclines uniformly. Further, the wall surface portions 100a to 100f may be inclined at an arbitrary angle, and the angle at which the wall surface portions 100a to 100f cross each other may be an angle other than 90 degrees. That is, the ink cartridge 10 can adopt any shape as long as the liquid storage chamber 180 that can store ink therein can be formed.

C-5. Fifth modification:
In the above embodiment, the outer surface of the third wall surface portion 100c of the cartridge 10 has the rotation fulcrum 166w (FIG. 3A). For example, a protrusion is provided on the third wall surface portion 100c and the protrusion is rotated. The fulcrum 166w may be used. Even in this case, the cartridge 10 can be easily detached from the holder 20 by rotating the cartridge 10 by the rotation fulcrum 166w.

C-6. Sixth modification:
In the above embodiment, the cartridge 10 has the protrusion 160, but it can be omitted. Correspondingly, in the holder 20, the guide groove 200t and the hole 202 (FIG. 7) can be omitted. Even in this case, the operability when the cartridge 10 is attached to and detached from the holder 20 can be improved by the rotation fulcrums 166w and 216w and the deforming portion 212 of the holder 20 as in the above embodiment.

C-7. Seventh modification:
In the above embodiment, the guide groove 200t of the holder 20 has the tapered lower guide groove 200tu, but is not limited to this. For example, the width of the guide groove 200t may be made substantially constant. Even in this case, the protrusion 160 can be easily guided to the hole 202 of the holder 20 by the guide groove 200t.

C-8. Eighth modification:
In the above embodiment, the terminals of the circuit board 130 are configured by two rows, but may be configured by one row or may be configured by three or more rows. In the case of three or more rows, the first row closest to the first restricting portion (notch) 140 is the second farthest away from the first restricting portion 140 (notch) 140. It is preferable to include more terminals than rows. By doing so, the electrical connection between each terminal included in the first and second columns and the printer 1 can be maintained well. Further, when the terminals are configured in three or more rows, it is more preferable that the rows closer to the first restricting portion (notch) 140 include more terminals. By doing so, the electrical connection between each terminal of the circuit board 130 and the printer 1 can be favorably maintained.

C-9. Ninth Modification In the above embodiment, the elastic portion (lever) 120 is provided on the second wall surface portion 100b of the cartridge 10, but the container side restricting portion 124 is formed on the second wall surface portion 100b of the cartridge 10. However, the engagement releasing part 122 may be provided on the holder 20 side. Even in this case, the engagement between the holder 20 and the container-side regulating portion 124 can be released by applying an external force to the engagement releasing portion 122 by the user.

C-10. Tenth Modification In the above embodiment, the circuit board 130 (FIG. 5) including the terminal group 130 t including nine terminals 130 a to 130 i arranged on the surface and the storage unit 133 is attached to the container body 100. The terminal group 130t may be provided directly on the container body 100. Even in such a configuration, the movement (displacement) in the width direction of the terminal group 130t with respect to the liquid ejecting apparatus (printer 1) is suppressed, and the contact between the terminal group 130t and the liquid ejecting apparatus (printer 1) is favorably maintained. Can do. In this case, it is more preferable that the notch 140 is provided in the container body 100 so as to overlap a part of the terminal group 130t in the length direction (X-axis direction). By doing so, the movement (displacement) in the width direction of the terminal group 130t with respect to the liquid ejecting apparatus (printer 1) can be further suppressed.

C-11. Eleventh modification:
In the above-described embodiments and modifications, the cartridges 10 and 10a used as the liquid storage container in the printer 1 have been described as examples. However, the present invention is not limited to this, and for example, a color material ejection head such as a liquid crystal display is provided. Device, device with electrode material (conductive paste) jet head used for electrode formation such as organic EL display, surface emitting display (FED), etc., device with bio organic matter jet head used for biochip manufacturing, precision pipette The present invention can be applied to a liquid container that can supply a liquid to a liquid ejecting apparatus such as an apparatus including a sample ejecting head, a textile printing apparatus, or a microdispenser. Further, the present invention is not limited to the ink cartridge but can be applied to a holder to which various liquid containers can be detachably attached. When a liquid container is used in the various liquid ejecting apparatuses described above, a liquid (coloring material, conductive paste, bioorganic matter, etc.) corresponding to the type of liquid ejected by the various liquid ejecting apparatuses is placed inside the liquid container. Can be accommodated. The present invention can also be applied to a liquid ejecting system including various liquid ejecting apparatuses including a holder and a liquid storage container corresponding to the various liquid ejecting apparatuses.

  DESCRIPTION OF SYMBOLS 1 ... Printer, 10 ... Cartridge, 10a ... Cartridge, 20 ... Holder, 21 ... Print head, 25a ... Apparatus side bottom wall surface part, 25b ... Engagement part side wall surface part, 25c ... Opposite wall surface part, 25e ... First apparatus side Side wall surface portion, 25f ... second device side wall surface portion, 50 ... second motor, 52 ... first motor, 60 ... control unit, 70 ... operation unit, 72 ... interface, 80 ... computer, 90 ... optical detection Device, 92 ... Light emitting element, 94 ... Light receiving element, 100 ... Container body, 100b2a ... Inner surface, 100a ... First wall surface portion, 100b ... Second wall surface portion, 100c ... Third wall surface portion, 100d ... Fourth Wall surface portion, 100e ... fifth wall surface portion, 100f ... sixth wall surface portion, 100b1 ... first vertical wall portion, 100b2 ... inclined wall portion, 100b3 ... second vertical wall portion, 110 ... Body supply port, 112 ... foam, 114 ... distribution channel, 120 ... elastic part (lever), 122 ... disengagement part, 122t ... first side, 122u ... second side, 124 ... container side regulating part, 124t ... engagement point, 130 ... circuit board, 130t ... terminal group, 131 ... boss groove, 132 ... boss hole, 133 ... memory part, 140 ... notch, 160 ... projection part, 166w ... rotation fulcrum, 170 ... prism, 170a C: prism, 170f: reflecting surface, 170t: prism unit, 180 ... liquid storage chamber, 200t ... guide groove, 200ta ... upper end, 200tb ... lower end, 200tu ... lower guide groove, 202 ... hole, 212 ... deformation part, 213: groove bottom wall surface, 216: standing wall portion, 216s ... upper surface, 216t ... extending surface, 216u ... facing surface, 216w ... rotation fulcrum, 216sp ... space portion 240 ... liquid supply pipe, 240t ... filter, 242 ... seal member, 260 ... device side engaging portion, 270 ... first device side restricting portion (regulating pin), 280 ... contact mechanism, 290 ... through hole, 800 ... including Area, PA ... printing paper, IK ... ink.

Claims (20)

A holder that is mounted on a liquid ejecting apparatus including a head that ejects liquid, and that can detachably attach a liquid storage container that can store liquid to be supplied to the head,
A holder having a rotation fulcrum for rotating the mounted liquid container in a predetermined direction and removing it from the holder. The holder according to claim 1,
A device side bottom wall surface portion forming a bottom surface;
A device-side engaging portion that engages with the liquid container and regulates the movement of the liquid container;
An opposing wall surface portion that is erected from the device-side bottom wall surface portion and is located at a position facing the device-side engagement portion across the device-side bottom wall surface portion,
The rotation fulcrum is formed on the opposing wall surface, and when the force is applied to the liquid storage container in a direction in which the engagement is released, the liquid storage container is centered on the rotation fulcrum in the predetermined direction. A holder that is configured to rotate into. The holder according to claim 2,
The liquid container to be attached to and detached from the holder includes a first wall surface portion that becomes a bottom surface when mounted on the holder, a second wall surface portion connected to the first wall surface portion, and the first wall surface portion. A container main body having a third wall surface portion connected to the wall surface portion and facing the second wall surface portion;
In the usage posture of the liquid ejecting apparatus, the facing wall surface portion is
An opposing surface extending upward from the apparatus-side bottom wall surface, and when the liquid container is attached, an opposing surface substantially parallel to the outer surface of the third wall surface portion;
An extending surface extending in a direction away from the outer surface of the third wall surface portion from the upper end of the facing surface;
The rotation fulcrum is a holder defined by a boundary between the facing surface and the extending surface. The holder according to claim 2,
The liquid container to be attached to and detached from the holder includes a first wall surface portion that becomes a bottom surface when mounted on the holder, a second wall surface portion connected to the first wall surface portion, and the first wall surface portion. A container main body having a third wall surface portion connected to the wall surface portion and facing the second wall surface portion;
In the usage posture of the liquid ejecting apparatus,
The opposing wall surface portion is an opposing surface extending upward from the apparatus-side bottom wall surface portion, and has an opposing surface substantially parallel to the outer surface of the third wall surface portion when the liquid container is mounted. A holder having a space for allowing the liquid container to rotate above the facing surface, the space being capable of receiving a part of the liquid container. The holder according to any one of claims 2 to 4,
In the usage posture of the liquid ejecting apparatus, the rotation fulcrum is positioned below an engagement point where the liquid container and the apparatus-side engagement portion engage. A holder according to any one of claims 2 to 5,
The opposing wall surface portion is a hole located closer to the apparatus-side bottom wall surface portion than the rotation fulcrum, and the liquid storage container after being mounted by inserting a protrusion provided in the liquid storage container Holder with a hole that regulates the movement of the body. The holder according to claim 6,
The opposing wall surface portion has a guide groove for guiding the protrusion to the hole while restricting the movement of the protrusion in the width direction of the liquid storage container when the liquid storage container is mounted. holder. The holder according to claim 7, wherein in the usage posture of the liquid ejecting apparatus,
The guide groove is a holder formed from the upper end of the opposed wall surface portion to the hole portion. The holder according to claim 7 or 8, wherein in the usage posture of the liquid ejecting apparatus,
The holder, wherein a width of an upper end of the guide groove is larger than a width of a lower end of the guide groove. A holder according to any one of claims 7 to 9,
The holder, wherein the width of the guide groove monotonously decreases toward the hole. A holder according to any one of claims 7 to 10,
The guide groove has a tapered lower guide groove whose width gradually decreases as it approaches the hole. The holder according to any one of claims 7 to 11, wherein in the usage posture of the liquid ejecting apparatus,
The holder, wherein the lower end of the guide groove has the same width as the hole. The holder according to any one of claims 7 to 12,
The groove bottom wall surface portion constituting the bottom surface of the guide groove and facing the liquid container has a deformable portion that can be elastically deformed in the depth direction of the guide groove,
In the usage posture of the liquid ejecting apparatus, the lower end of the deformable portion reaches the hole. The holder according to claim 13, wherein in the usage posture of the liquid ejecting apparatus,
The upper end of the deformable portion is a container side regulating portion of the liquid container before the projection of the liquid container is inserted into the hole portion of the groove bottom wall surface portion, and the device side When the container side restricting portion to be engaged with the engaging portion is engaged with the device side engaging portion, the locus of the protrusion rotating about the engaging point where the liquid storage container is engaged, and Holder that reaches a position higher than the intersection where the groove bottom wall intersects. The holder according to claim 13 or claim 14,
The said deformation | transformation part is a holder formed by forming a notch in the both ends of the said groove bottom wall surface part. The holder according to any one of claims 2 to 15,
The apparatus-side bottom wall surface portion includes a first device-side regulating portion that regulates at least movement in the width direction of the liquid storage container in cooperation with the first regulation portion of the liquid storage container. The holder according to claim 16, wherein
The shape of the said 1st apparatus side control part is a holder which is a protrusion shape in which the said 1st control part which is a notch is inserted.   A liquid ejecting apparatus equipped with the holder according to claim 1. A liquid container detachable from a liquid ejecting apparatus including a head for ejecting liquid,
A container main body that forms a liquid storage chamber for storing a liquid therein, and is connected to a first wall surface portion that becomes a bottom surface when mounted on a holder of the liquid ejecting apparatus, and the first wall surface portion. A container main body having a second wall surface portion, and a third wall surface portion connected to the first wall surface portion and facing the second wall surface portion;
An elastic part having one end attached to the second wall surface part and having elasticity, and is used for attaching to and detaching from the holder,
The elastic part is
A container-side regulating portion that regulates movement of the liquid container by engaging with the holder;
An engagement release portion that is above the container-side regulating portion, and is elastically deformed by applying an external force in a direction of pressing against the second wall surface portion to release the engagement, and the third wall surface An engagement portion that is a contact portion between the contact portion and the holder and that can be removed from the holder by rotating the liquid container with a contact portion positioned below the engaged engagement point as a rotation fulcrum A liquid container, comprising: a release unit. The liquid container according to claim 19,
The disengagement portion has a first side surface facing the second wall surface portion, and a second side surface opposite to the first side surface,
When the first side surface is in contact with the second wall surface portion, the second side surface becomes the rotation fulcrum from the upper end toward the lower end in the direction in which the second and third wall surface portions oppose each other. A liquid container configured to approach.

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