JPWO2019059128A1 - cartridge - Google Patents

Abstract

Provided is a technique capable of appropriately maintaining contact between a terminal on the device side and a contact portion. In the X direction, the central axis of the central liquid supply port is located within the range where the protruding surface is located, and in the X direction, the cartridge is within the range where the first surface is located, more than the central liquid supply port. The central axis of the liquid supply port on the X direction side is located, and the central axis of the liquid supply port on the + X direction side of the central liquid supply port is located within the range where the second surface portion is located in the X direction.

Description

The present invention relates to cartridge technology.

Conventionally, a technique of supplying ink to a printer using two types of cartridges is known (for example, Patent Documents 1 to 5). The first cartridge of one of the two types of cartridges contains one type of ink (for example, black ink). The second cartridge of the other of the two types of cartridges contains, for example, a plurality of types of inks (for example, yellow, cyan, and magenta inks). Further, in the conventional technique, each of the two types of cartridges is provided with a contact portion that is electrically connected by contacting with a printer-side terminal included in the printer. Information about the cartridge is exchanged between the printer and the cartridge by electrically connecting the contact portion to the terminal on the printer side. Information about the cartridge includes, for example, information indicating the type of liquid to be contained, information indicating the amount of liquid to be contained, information indicating the amount of liquid consumed, and information indicating the date of manufacture of the cartridge.

Japanese Patent Application Laid-Open No. 2003-520711 Japanese Unexamined Patent Publication No. 2014-233928 JP-A-2015-160314 JP-A-2007-276495 International Publication No. 99/59823

In the conventional technique, a chimney type supply mechanism (for example, Patent Documents 1 to 3 and 5) and a needle type supply mechanism (for example, Patent Document 4) are used as a supply mechanism for supplying the ink of the cartridge to the printer side. It has been known. In the chimney type supply mechanism, ink is supplied from the ink supply section to the ink lead-out section in a state where the surface of the cartridge that holds the ink in the ink supply section and the upper surface of the ink lead-out section of the printer are in surface contact with each other. Ink. In the needle type supply mechanism, ink is supplied to the ink flow path in the ink supply needle with the ink supply needle of the printer inserted in the ink supply port of the cartridge.

In the needle type supply mechanism, a valve member for opening and closing the flow path in the ink supply port and a seal member for preventing ink from leaking from the gap between the ink supply needle and the ink supply port are provided in the ink supply port. It may be provided. Therefore, when the ink supply needle is inserted into the ink supply port, the cartridge may receive an external force from the ink supply needle via the valve member or the seal member. When the cartridge receives an external force, the cartridge may move to some extent even when the cartridge is attached to the printer.

Further, in a cartridge used for a printer having a carriage that moves back and forth, the cartridge receives an inertial force that accompanies the reciprocating movement of the carriage. That is, when the moving direction of the carriage changes from one direction (for example, the outward direction) to the other direction (returning direction), a large inertial force (external force) is applied to the cartridge by acceleration / deceleration of the carriage, and the cartridge. May rotate or rock.

Further, depending on the arrangement position of the contact portion on the cartridge, there is a possibility that the portion where the contact portion is arranged may be deformed by an external force. As a result, the position of the contact portion may be displaced, and the contact between the printer terminal and the contact portion may not be maintained.

If the cartridge moves, the position of the contact portion of the cartridge may fluctuate, and it may not be possible to maintain contact between the printer side terminal and the contact portion. Therefore, conventionally, a technique capable of appropriately maintaining contact between the terminal on the printer side and the contact portion has been desired. In particular, the second cartridge containing a plurality of types of ink tends to be generally heavier than the first cartridge containing one type of ink. Therefore, the second cartridge receives a large amount of inertial force generated by acceleration / deceleration of the carriage, and may move significantly with the reciprocating movement of the carriage. In order to properly maintain the contact between the printer side terminal and the contact portion in the second cartridge, a device different from that in the first cartridge is required. Further, such a request is common not only to the cartridge containing the ink to be supplied to the printer but also to the cartridge containing the liquid to be supplied to the liquid injection device other than the printer.

The present invention has been made to solve at least a part of the above-mentioned problems, and can be realized as the following forms or application examples.

(1-1) According to one embodiment of the present invention, when the three directions orthogonal to each other are the Z direction, the X direction, and the Y direction, the carriage that reciprocates in the X direction and the X in the carriage. On the carriage of a liquid injection device having a plurality of liquid supply needles provided side by side in a direction, a device-side terminal provided in the carriage, and a device-side engaging portion provided in the carriage, 1 A cartridge is provided that is mounted side by side with other cartridges that have one liquid supply port. The cartridge has a bottom surface and a top surface facing each other in the Z direction, a first side surface and a second side surface facing each other in the Y direction, and a position on the bottom surface closer to the second side surface than the first side surface. The odd number of liquid supply ports arranged side by side in the X direction, each having a central axis along the Z direction, and the above-mentioned second side surface. A plurality of contact portions arranged side by side in the X direction at a position closer to the bottom surface than the upper surface, and an engaging member provided at a position on the second side surface on the upper surface side of the plurality of contact portions. When the cartridge is mounted on the carriage, the liquid supply port receives the liquid supply needle, the contact portion contacts the device side terminal, and one of the engaging members. The cartridge-side engaging portion, which is a portion, is locked to the lower surface of the device-side engaging portion, and the central axis of the central liquid supply port among the three or more odd-sized liquid supply ports is the first. Of the two liquid supply ports located next to the central liquid supply port, one central axis, including the first central axis, and a plane perpendicular to the X direction as the first central surface, the X direction. The central axis of the liquid supply port on the side close to the center of the carriage is the second central axis, the surface including the second central axis and perpendicular to the X direction is the second central surface, and the cartridge side engagement is performed. When the center of the portion in the X direction is set as the engagement center, the central contact portion provided at the center of the plurality of contact portions in the X direction intersects with the first central surface, and in the X direction, A part of the plurality of contact portions is located within the range in which the cartridge-side engaging portion is located, and the engaging center is provided between the first central surface and the second central surface.

According to the above embodiment, when the cartridge is mounted on the carriage of the liquid injection device, the movement of the cartridge can be suppressed when it is affected by an external force or an inertial force accompanying the reciprocating movement of the carriage. As a result, fluctuations in the position of the contact portion with respect to the device-side terminal can be reduced. Therefore, it is possible to maintain good contact between the contact portion and the terminal on the device side.

(1-2) In the above-described embodiment, further, a corner portion where the third side surface and the fourth side surface facing each other in the X direction, the first side surface and the third side surface intersect, and the first side surface and the first side surface are described. A recess provided in at least one corner of the corner where the four side surfaces intersect, the corner where the second side surface and the third side surface intersect, and the corner portion where the second side surface and the fourth side surface intersect. The carriage is provided with a recess for guiding the mounting of the cartridge, and the recess extends from the bottom surface side toward the top surface side. Good.
According to the above embodiment, the movement of the cartridge can be regulated by the recess. As a result, fluctuations in the position of the contact portion can be further suppressed, and the contact between the contact portion and the device-side terminal can be maintained better.

(1-3) In the above embodiment, at least one end of the first side surface, one end in the X direction and the other end in the X direction, An uneven portion that fits with the cartridge identification convex portion provided on the carriage may be provided, and the uneven portion may extend from the bottom surface side of the first side surface toward the upper surface side.
According to the above embodiment, the movement of the cartridge can be regulated by the uneven portion. As a result, fluctuations in the position of the contact portion can be suppressed, and the contact between the contact portion and the terminal on the device side can be maintained better.

(2-1) According to another embodiment of the present invention, when the three directions orthogonal to each other are the Z direction, the X direction, and the Y direction, the carriage that reciprocates along the X direction and the carriage. The carriage of the liquid injection device having a plurality of liquid supply needles provided in the X direction side by side and device-side terminals provided on the carriage, and another cartridge provided with one liquid supply port. Cartridges are provided that are mounted side by side. This cartridge has a bottom surface and a top surface facing each other in the Z direction, a first side surface and a second side surface facing each other in the Y direction, and a position on the bottom surface closer to the second side surface than the first side surface. Three or more odd-sized liquid supply ports arranged side by side in the X direction, each having a central axis along the Z-direction, and the above-mentioned three or more odd-sized liquid supply ports and the second side surface. In a mounted state in which the cartridge is mounted on the carriage, the liquid supply port is provided with a plurality of contact portions arranged side by side in the X direction at a position closer to the bottom surface than the top surface. The liquid supply needle is received, the contact portion comes into contact with the device side terminal, and the second side surface thereof is more than the first surface portion, the second surface portion, and the first surface portion and the second surface portion in the Y direction. It has a protruding surface portion protruding toward the carriage side, the first surface portion is located on the −X direction side, which is one direction in the X direction, and the second surface portion is in the other direction in the X direction. It is located on the + X direction side, and in the X direction, the protruding surface portion is provided between the first surface portion and the second surface portion, and the protruding surface portion is among the odd number of three or more liquid supply ports. A mounting portion is provided on the protruding surface portion, which includes the central axis of the liquid supply port in the center and intersects with a predetermined YZ plane orthogonal to the X direction, and arranges the plurality of contact portions. In, the first side portion of the protruding surface portion on the −X direction side and the second side portion on the + X direction side are located between two regulating portions provided on the carriage, and the cartridge is placed in the Y. When viewed from the second side surface side to the first side surface side in the direction, the central axis of the central liquid supply port is located within the range in which the protruding surface portion is located in the X direction. In the X direction, the central axis of the liquid supply port on the −X direction side with respect to the central liquid supply port is located within the range where the first surface portion is located, and in the X direction, the second surface portion is located. Within the located range, the central axis of the liquid supply port on the + X direction side of the central liquid supply port is located.

According to the above embodiment, since the first surface portion, the second surface portion, and the protruding surface portion are provided on the second side surface, the rigidity of the second side surface can be increased. Further, according to this form, the arrangement portion is provided on the protruding surface portion having higher rigidity, and the contact portion is provided on the arrangement portion. Therefore, since the fluctuation of the position of the contact portion can be suppressed, the contact between the contact portion and the terminal on the device side can be maintained better.
According to the above embodiment, since the first side portion and the second side portion of the protruding surface portion are located between the two regulating portions, the movement of the protruding surface portion on which the contact portion is arranged can be suppressed by the regulating portion. As a result, fluctuations in the position of the contact portion can be suppressed, so that the contact between the contact portion and the terminal on the device side can be maintained better.
According to the above embodiment, since it is possible to provide the regulating portion by using the space facing the first surface portion and the second surface portion in the Y direction, the dimension of the regulating portion in the Y direction is increased to increase the rigidity of the regulating portion. Can be raised. Therefore, the movement of the protruding surface portion can be regulated by the regulating portion having increased rigidity, and the fluctuation of the position of the contact portion can be further suppressed.
According to the above embodiment, the protruding surface portion is provided between the first surface portion and the second surface portion in the X direction, and the central axis of the central liquid supply port is located within the range where the protruding surface portion is located in the X direction. .. As a result, in the X direction, the movement of the protruding surface portion can be regulated in a well-balanced manner by the two regulating portions from both sides of the protruding surface portion in the X direction. Therefore, since the fluctuation of the position of the contact portion can be suppressed, the contact between the contact portion and the terminal on the device side can be maintained better.
According to the above embodiment, the protruding surface portion is provided between the first surface portion and the second surface portion in the X direction, and the central axis of the central liquid supply port is located within the range where the protruding surface portion is located in the X direction. .. As a result, the dimensions of the first surface portion and the second surface portion in the X direction can be increased to some extent. As a result, the dimension of the regulation portion in the X direction can be increased to some extent corresponding to the first surface portion and the second surface portion, so that the rigidity of the regulation portion can be increased. Therefore, since the movement of the protruding surface portion can be regulated by the regulating portion having increased rigidity, it is possible to further suppress the fluctuation of the position of the contact portion.
According to the above embodiment, the user can use the protruding surface portion as a mark when mounting the cartridge on the carriage. Therefore, it is possible to reduce the possibility of mounting the cartridge on the carriage with the first side surface and the second side surface reversed.
According to the above embodiment, since the arrangement portion for arranging a plurality of contact portions is provided on the protruding surface portion, when the user or the manufacturer accidentally drops the cartridge, the arrangement portion is more than the other portion. Also increases the possibility of colliding with the falling surface first. The contact portion is often provided on the circuit board. In addition, a storage device (memory) is often provided on or around the circuit board. That is, in the above embodiment, when the cartridge is dropped, the circuit board and the storage device are positively destroyed. As a result, when the cartridge is mounted on the carriage, the liquid injection device can easily detect the defect of the cartridge.

(2-2) In the above-described embodiment, the engaging member is provided on the second side surface at a position on the upper surface side of the plurality of contact portions, and in the mounted state, the engaging member is provided. The cartridge-side engaging portion that is a part of the carriage may be locked to the lower surface of the device-side engaging portion provided on the carriage.
According to the above embodiment, the movement of the cartridge can be reduced by having the engaging member. As a result, the fluctuation of the position of the contact portion with respect to the device-side terminal can be reduced, so that the contact between the contact portion and the device-side terminal can be maintained better.

(2-3) In the form of 2-2, further, the first side portion is provided with a first protrusion protruding in the −X direction, and the second side portion is provided with the + X direction. The first protrusion and the second protrusion are located on the upper surface side of the contact portion and on the bottom surface side of the engaging member in the Z direction. Then, in the mounted state, the first protrusion may be in contact with one of the two regulating portions, and the second protrusion may be in contact with the other regulating portion of the two regulating portions.
According to the above embodiment, the movement of the protruding surface portion can be further regulated by the first protrusion contacting one regulating portion and the second protrusion contacting the other regulating portion. As a result, fluctuations in the position of the contact portion can be further suppressed, so that the contact between the contact portion and the device-side terminal can be maintained even better.
Further, according to the above embodiment, the first protrusion and the second protrusion are located on the upper surface side of the contact portion and on the bottom surface side of the engaging member in the Z direction. Therefore, the sway of the cartridge can be reduced.

(2-4) In the above-described embodiment, the engaging member may be provided on the protruding surface portion. According to the above embodiment, by providing the engaging member on the protruding surface portion having higher rigidity, the possibility of deformation of the protruding surface portion can be reduced, and the deformation of the engaging member and the deviation of the locking position can be reduced. Therefore, the contact between the contact portion and the terminal on the device side can be maintained better.

(2-5) In the form of 2-1 described above, the first side portion is provided with a first protrusion protruding in the −X direction, and the second side portion is provided with the + X direction. The first protrusion and the second protrusion are located on the upper surface side of the contact portion and on the bottom surface side of the engaging member in the Z direction. Then, in the mounted state, the first protrusion may be in contact with one of the two regulating portions, and the second protrusion may be in contact with the other regulating portion of the two regulating portions.
According to the above embodiment, the movement of the protruding surface portion can be further regulated by the first protrusion contacting one regulating portion and the second protrusion contacting the other regulating portion. As a result, fluctuations in the position of the contact portion can be further suppressed, so that the contact between the contact portion and the device-side terminal can be maintained even better.
Further, according to the above embodiment, the first protrusion and the second protrusion are located on the upper surface side of the contact portion in the Z direction. Therefore, the sway of the cartridge can be reduced.

(2-6) In the above-described embodiment, the first surface portion and the second surface portion may be provided with at least one of a concave portion and a convex portion arranged at intervals from the protruding surface portion. According to the above embodiment, the rigidity of the first surface portion and the second surface portion can be increased.

(2-7) In the above-described embodiment, a protrusion is further provided on the bottom surface, and the protrusion is provided at a position closer to the first side surface than the second side surface on the bottom surface. Two may be provided so as to sandwich a surface perpendicular to the X direction including the central axis of the central liquid supply port. According to the above embodiment, the protrusion can regulate the movement of the cartridge rotating along the YZ plane parallel to the Y and Z directions.

(2-8) In the above-described embodiment, the central contact portion provided at the center of the plurality of contact portions in the X direction includes the central axis of the central liquid supply port and is perpendicular to the X direction. It may intersect with the face. According to the above embodiment, the fluctuation of the positions of the plurality of contact portions can be reduced.

(2-9) In the above embodiment, the plurality of contact portions include the central axis of the central liquid supply port and are arranged so as to be symmetrical in the X direction with the plane perpendicular to the X direction as the center. It may have been done. According to the above embodiment, the maximum fluctuation amount of the contact portion can be reduced.

(2-10) In the above embodiment, the odd number of liquid supply ports may be arranged on a straight line parallel to the X direction. According to the above embodiment, it is possible to maintain a good connection between the liquid supply port and the liquid supply needle, and it is possible to reduce liquid leakage and air intrusion into the liquid supply needle.

(2-11) The above-described embodiment further has a recess on the bottom surface, which is provided at a position closer to the first side surface than the second side surface and is provided on the carriage to receive a device-side protrusion. You may be. According to the above embodiment, the movement of the cartridge can be regulated by inserting the device-side protrusion into the recess. Therefore, fluctuations in the position of the contact portion can be suppressed, and good contact between the contact portion and the device-side terminal can be maintained.

The present invention can also be realized in various forms other than the cartridge and the cartridge. For example, it can be realized in the form of a cartridge manufacturing method, a liquid injection system including a cartridge and a head, a cartridge set including a cartridge having one liquid supply port and a cartridge having an odd number of liquid supply ports, and the like.

The perspective view which shows the structure of the liquid injection system. First top view of the carriage. The second top view of the carriage. The first perspective view of the carriage. A second perspective view of the carriage. The first explanatory diagram explaining the structure of the contact mechanism. The second explanatory drawing explaining the structure of the contact mechanism. The schematic diagram for demonstrating the head. 9-9 sectional view of FIG. 10-10 sectional view of FIG. The first perspective view of the first cartridge. The second perspective view of the first cartridge. The first perspective view of the second cartridge. The second perspective view of the second cartridge. Top view of the second cartridge. Bottom view of the second cartridge. Rear view of the second cartridge. Front view of the second cartridge. Left side view of the second cartridge. Right side view of the second cartridge. Front view of the circuit board. Side view of the circuit board. The figure for demonstrating the positional relationship of each element of the 2nd cartridge. FIG. 1 for explaining the external force applied to the second cartridge. FIG. 2 for explaining the external force applied to the second cartridge. The figure for demonstrating the structure for restricting the movement of the 2nd cartridge. The figure for demonstrating the regulation of the movement of the 2nd cartridge in the X direction. The schematic diagram which shows the 2nd cartridge of the 1st reference example. The schematic diagram which shows the 2nd cartridge of the 2nd reference example. 30-30 sectional view of FIG. 23. The schematic diagram of the part surrounded by the square of FIG. 32-32 sectional view of FIG. 23. The figure for demonstrating the 2nd cartridge using an adapter. The figure for demonstrating the 2nd cartridge using an adapter. The conceptual diagram of the 2nd cartridge. The conceptual diagram of the 2nd cartridge. The conceptual diagram of the 2nd cartridge. The conceptual diagram of the 2nd cartridge. The conceptual diagram of the 2nd cartridge. The conceptual diagram of the 2nd cartridge. Conceptual diagram of a two-body type second cartridge. Schematic diagram of the second cartridge of the two-body type. Conceptual diagram of a two-body type second cartridge. Schematic diagram of the two-body type second cartridge. The figure for demonstrating the 2nd cartridge. The figure for demonstrating the 2nd cartridge. The figure for demonstrating the 2nd cartridge. The figure which shows the other embodiment of the terminal shape of a circuit board. The figure which shows the other embodiment of the terminal shape of a circuit board. The figure which shows the other embodiment of the terminal shape of a circuit board. The figure which shows the other embodiment of the terminal shape of a circuit board.

A. First Embodiment:
A-1. Overall configuration of liquid injection device:
FIG. 1 is a perspective view showing the configuration of the liquid injection system 90. In FIG. 1, XYZ axes orthogonal to each other are drawn. The XYZ axes in FIG. 1 correspond to the XYZ axes in other figures. The figures shown below are also provided with XYZ axes as necessary. The direction along the X axis is the X direction, the direction along the Y axis is the Y direction, and the direction along the Z axis is the Z direction. Further, one direction in the X direction is defined as the + X direction, and the other direction in the X direction is defined as the −X direction. Further, one direction in the Y direction is the + Y direction, and the other direction is the −Y direction. Further, one direction in the Z direction is the + Z direction, and the other direction is the −Z direction. When the liquid injection system 90 is installed in the XY plane (horizontal plane) parallel to the X and Y directions, the Z direction is the vertical direction, the + Z direction is the antigravity direction (upward direction), and -Z. The direction is the direction of gravity (downward). Further, in the liquid injection system 90, the Y direction is the front-rear direction and the X direction is the width direction (horizontal direction).

The liquid injection system 90 includes a cartridge set 5 including two types of cartridges 10 and 20, and a liquid injection device 50. In the liquid injection system 90, two types of cartridges 10 and 20 are detachably attached to the cartridge holder 60 of the liquid injection device 50 by the user. The liquid injection device 50 is an inkjet printer capable of printing on paper up to about A3 size. The liquid injection device 50 has a head 540 capable of injecting three or more kinds of liquids. In the present embodiment, the head 540 can eject four types of inks (black ink, yellow ink, magenta ink, and cyan ink) having different colors. Here, the cartridge 10 is also referred to as a "first cartridge 10", and the cartridge 20 is also referred to as a "second cartridge 20".

The first cartridge 10 and the second cartridge 20 are mounted on the cartridge holder 60 side by side in the X direction. The first cartridge 10 contains one type of liquid. In the present embodiment, the first cartridge 10 contains black ink. The second cartridge 20 contains three types of ink, yellow ink, magenta ink, and cyan ink. That is, the second cartridge 20 is one of the remaining types of liquids obtained by removing one type of liquid contained in the first cartridge 10 from three or more types of liquids (four types in this embodiment) that can be ejected by the head 540. Holds multiple types of liquids. Here, the number and types of cartridges mounted on the cartridge holder 60 are not limited to this embodiment. For example, two first cartridges 10 and one second cartridge 20 may be mounted in the cartridge holder 60. In this case, the configuration of the cartridge holder 60 may be changed according to the number of cartridges. Further, the types of liquids contained in the first cartridge 10 and the second cartridge 20 are not limited to the present embodiment. For example, the second cartridge 20 may contain inks of other colors (for example, light azenta or light cyan). Further, the second cartridge 20 may have a configuration capable of accommodating two types of liquids, or may have a configuration capable of accommodating four or more types of liquids.

In addition to the cartridge holder 60, the liquid injection device 50 includes a control unit 510 and a carriage 520 having the cartridge holder 60. The carriage 520 includes the head 540 described above. The liquid injection device 50 distributes ink from the first cartridge 10 and the second cartridge 20 mounted on the cartridge holder 60 to the head 540 via a liquid supply needle described later. The ink distributed to the head 540 is ejected (supplied) from the head 540 to a printing medium 515 such as paper or a label. As a result, data such as characters, figures, and images are printed on the print medium 515 using the head 540.

The control unit 510 controls each unit of the liquid injection device 50. The carriage 520 is configured to be movable relative to the print medium 515. The head 540 includes an ink ejection mechanism that ejects ink supplied from the cartridges 10 and 20 mounted on the cartridge holder 60 to the printing medium 515. The control unit 510 and the carriage 520 are electrically connected via a flexible cable 517, and the ink ejection mechanism of the head 540 operates based on a control signal from the control unit 510.

In this embodiment, the carriage 520 includes a head 540 and a cartridge holder 60. As described above, the type of the liquid injection device 50 in which the cartridge 20 is mounted on the cartridge holder 60 on the carriage 520 for moving the head 540 is also referred to as an "on-carriage type". In another embodiment, an immovable cartridge holder 60 is configured at a portion different from the carriage 520, and ink from the cartridge 20 mounted on the cartridge holder 60 is supplied to the head 540 of the carriage 520 via a flexible tube. You may. Such printer types are also referred to as "off-carriage types."

The liquid injection device 50 includes a main scan feed mechanism and a sub scan feed mechanism for relatively moving the carriage 520 and the print medium 515 to realize printing on the print medium 515. The main scanning feed mechanism of the liquid injection device 50 includes a carriage motor 522 and a drive belt 524. By transmitting the power of the carriage motor 522 to the carriage 520 via the drive belt 524, the carriage 520 reciprocates along the X direction. The sub-scanning feed mechanism of the liquid injection device 50 includes a transfer motor 532 and a platen 534, and transfers the print medium 515 in the + Y direction by transmitting the power of the transfer motor 532 to the platen 534. The direction in which the carriage 520 reciprocates is referred to as the main scanning direction, and the direction in which the print medium 515 is conveyed may be referred to as the sub-scanning direction. In the present embodiment, the main scanning direction is the X direction and the sub scanning direction is the Y direction. The carriage motor 522 of the main scanning feed mechanism and the transport motor 532 of the sub scanning feed mechanism operate based on the control signal from the control unit 510.

A-2. Carriage 520 configuration:
FIG. 2 is a first top view of the carriage 520. FIG. 3 is a second top view of the carriage 520. FIG. 4 is a first perspective view of the carriage 520. FIG. 5 is a second perspective view of the carriage 520. FIG. 6 is a first explanatory diagram illustrating the configuration of the contact mechanism 70A. FIG. 7 is a second explanatory view illustrating the configuration of the contact mechanism 70A. FIG. 2 also shows the first cartridge 10 and the second cartridge 20 in a state of being correctly mounted in the designed mounting position in the cartridge holder 60. The "state in which the cartridge side terminal group is correctly mounted in the designed mounting position" is a position where each terminal of the cartridge side terminal group described later contacts each corresponding terminal of the device side terminal group of the contact mechanism 70 of the liquid injection device 50. Refers to the state in which the cartridges 10 and 20 are located.

The cartridge holder 60 (FIGS. 4 and 5) has five wall portions 601,603,604,605,606. The recess formed by these five wall portions 601, 603, 604, 605, 606 serves as a cartridge mounting portion 602 (also referred to as "cartridge storage chamber 602") for mounting the cartridges 10 and 20. The cartridge mounting portion 602 (FIGS. 2 and 3) is located on the + X direction side and is located on the first mounting portion 602W for mounting the first cartridge 10 and on the −X direction side, and mounts the second cartridge 20. It has a second mounting portion 602T for the purpose. The upper side (+ Z direction side) of the cartridge mounting portion 602 is open, and the cartridges 10 and 20 are attached to and detached from the cartridge holder 60 through this opening. The wall portion 601 is also referred to as "device side bottom wall portion 601". The wall portion 603 is also referred to as a "first device side side wall portion 603". The wall portion 604 is also referred to as a "second device side side wall portion 604". The wall portion 605 is also referred to as a "third device side side wall portion 605". The wall portion 606 is also referred to as a "fourth device side side wall portion 606".

The device-side bottom wall portion 601 (FIG. 4) forms the bottom surface of the concave cartridge mounting portion 602. The side wall portions 603, 604, 605, 606 on the first to fourth device sides rise from the first wall portion 601 on the device side in the + Z direction to form the side surface of the concave cartridge mounting portion 602. The side wall portion 603 on the first device side and the side wall portion 604 on the second device side face each other in the Y direction. The side wall portion 603 on the first device side is located on the −Y direction side, and the side wall portion 604 on the second device side is located on the + Y direction side. The third device side side wall portion 605 and the fourth device side side wall portion 606 face each other in the X direction. The third device side side wall portion 605 is located on the + X direction side, and the fourth device side side wall portion 606 is located on the −X direction side.

The cartridge holder 60 (FIGS. 3 to 5) further includes a plurality of liquid supply needles 640 and a plurality of contact mechanisms 70 having device-side terminals. In this embodiment, four liquid supply needles 640 are provided. When the four liquid supply needles 640 are used separately, the symbols "640A", "640B", "640C", and "640D" are used. In this embodiment, two plurality of contact mechanisms 70 are provided. When the two contact mechanisms 70 are used separately, the symbols "70A" and "70B" are used.

The liquid supply needle 640 (FIG. 5) is provided on the cartridge mounting portion 602 inside the carriage 520 (cartridge holder 60). The liquid supply needle 640 has a flow path inside which the liquid flows. The liquid supply needle 640 is inserted into the corresponding liquid supply ports 180, 280 (FIG. 2) of the cartridges 10, 20. As a result, the liquid contained in the cartridges 10 and 20 is introduced into the flow path inside the liquid supply needle 640. The liquid introduced into the liquid supply needle 640 is supplied to the head 540.

The liquid supply needle 640 (FIG. 5) is a member extending in the + Z direction from the first wall portion 601 on the device side, and has a base end portion 645 and a tip end portion 642. The base end portion 645 side of the liquid supply needle 640 has a cylindrical shape, and the tip end portion 642 side has a substantially conical shape in which the outer diameter decreases toward the + Z direction side. The base end portion 645 forms the −Z direction side end portion of the liquid supply needle 640. The tip portion 642 forms the + Z direction side end portion of the liquid supply needle 640. The tip portion 642 is formed with an introduction hole for introducing the liquid supplied from the cartridges 10 and 20 into the internal flow path. The liquid supply needle 640 has a central axis C along the Z direction.

The four liquid supply needles 640A to 640D (FIG. 3) are arranged side by side in the X direction. The four liquid supply needles 640A to 640D are arranged in a portion of the device-side bottom wall portion 601 surrounded by a frame-shaped device-side regulation wall portion 615 that rises from the device-side bottom wall portion 601 in the + Z direction. .. The three liquid supply needles 640A to 640C are arranged in the region 611 located on the −X direction side in the region surrounded by the device-side regulation wall portion 615. One liquid supply needle 640D is arranged in the region 612 located on the + X direction side in the region surrounded by the device side regulation wall portion 615. The device-side regulation wall portion 615 regulates the movement of the first cartridge 10 and the second cartridge 20 when the first cartridge 10 and the second cartridge 20 are mounted on the cartridge holder 60 (mounted state). Specifically, the device-side regulation wall portion 615 regulates the movement of the first cartridge 10 and the second cartridge 20 along the XY plane parallel to the X and Y directions. Details of the regulation of the movement of the first cartridge 10 and the second cartridge 20 by the device-side regulation wall portion 615 will be described later.

The three liquid supply needles 640A to 640C (FIG. 3) are arranged in the second mounting portion 602T. The three liquid supply needles 640A to 640C are each inserted into the three corresponding liquid supply ports 280 of the second cartridge 20. As a result, different types of liquid contained in the second cartridge 20 flow through the three liquid supply needles 640A to 640C. In the present embodiment, yellow ink is circulated in the liquid supply needle 640A, magenta ink is circulated in the liquid supply needle 640B, and cyan ink is circulated in the liquid supply needle 640C. The liquid supply needle 640D is inserted into one liquid supply port 180 included in the first cartridge 10. As a result, the liquid (black ink in the present embodiment) contained in the first cartridge 10 circulates in the liquid supply needle 640D. The liquid flowing into the liquid supply needles 640A to 640D is supplied to the head 540 (FIG. 2).

The contact mechanism 70 (FIG. 4) is provided on the side wall portion 603 on the first device side. The contact mechanism 70A has a device-side terminal (device-side terminal group 799) that comes into contact with a contact portion described later of the second cartridge 20 when the second cartridge 20 is mounted. The contact mechanism 70B has a device-side terminal (device-side terminal group 799) that comes into contact with a contact portion described later of the first cartridge 10 when the first cartridge 10 is mounted.

Since the configurations of the two contact mechanisms 70A and 70B are the same, the contact mechanism 70A provided on the second mounting portion 602T will be described below. The contact mechanism 70A (FIGS. 6 and 7) has contact forming members 703 and 704 that come into contact with the cartridge side terminal group of the second cartridge 20 (the first cartridge 10 in the case of the contact mechanism 70B). The contact mechanism 70A (FIG. 6) has two types of slits 701 and 702 (FIGS. 6) having substantially constant pitches and different depths so as to correspond to the cartridge side terminals 431 to 439 of the cartridge side terminal group 499 (FIG. 6). 7) are formed alternately.

A holding member 705 (FIG. 6) is arranged in each of the slits 701 and 702. Contact forming members 703 and 704 having conductivity and elasticity are fitted in the holding members 705 of the slits 701 and 702. The contact forming members 703 and 704 can be elastically deformed in a direction in which both ends include a Y-direction component with a portion in contact with the holding member 705 as a fulcrum.

Of both ends of the contact forming members 703 and 704, the end 792 exposed inside the cartridge mounting portion 602 is the circuit board 400 (first cartridge 10) of the second cartridge 20 (first cartridge 10 in the case of the contact mechanism 70B). Then, the circuit board 30) has the corresponding cartridge-side terminals 431 to 439 that are elastically contacted with each other. As shown in FIG. 6, the end portion 792 is elastically deformed in the −Y direction side from the no-load state by being pressed toward the −Y direction side by the cartridge side terminal group 499. As a result, the cartridge side terminal group 499 is pressed in the + Y direction by the end portion 792, so that good contact between the contact forming members 703 and 704 and the cartridge side terminal group 499 can be maintained.

Of the cartridge side terminals 431 to 439, the portion that comes into contact with the contact forming members 703 and 704 is the contact portion. FIG. 7 shows portions 710 to 790 of the contact forming members 703 and 704 that come into contact with the cartridge side terminals 431 to 439. That is, the portions 710 to 790 that come into contact with the cartridge side terminals 431 to 439 serve as device side terminals for electrically connecting the control unit 510 (FIG. 1) of the liquid injection device 50 and the cartridge side terminals 431 to 439. Function. Hereinafter, the portions 710 to 790 that come into contact with the cartridge side terminals 431 to 439 shown in FIG. 7 are also referred to as device side terminals 710 to 790. Further, the device-side terminals 710 to 790 are also collectively referred to as a device-side terminal group 799.

On the other hand, among the contact forming members 703 and 704, the end portion 793 (FIG. 6) located outside the cartridge mounting portion 602 corresponds to the terminals 71 to 79 provided on the relay board 790A of the liquid injection device 50. Elastically contacts the terminals.

The cartridge holder 60 further includes a device-side engaging portion 632 (FIG. 4), a regulating portion 635 as a regulating portion (FIGS. 4 and 5), a cartridge identification convex portion 616 (FIG. 3), and a device-side protrusion. It is provided with 638 (FIGS. 3 and 5).

The device-side engaging portion 632 (FIG. 4) is provided on the first device-side side wall portion 603, and is provided on the + Z direction side of the contact mechanism 70. Two device-side engaging portions 632 are provided. When the two device-side engaging portions 632 are used separately, the reference numerals "632A" and "632D" are used. The device-side engaging portion 632 is a protruding piece that protrudes from the first device-side side wall portion 603 toward the cartridge mounting portion 602 side (+ Y direction side). The device-side engaging portion 632A provided on the second mounting portion 602T locks the engaging member described later of the second cartridge 20 in the mounted state of the second cartridge 20. The device-side engaging portion 632D provided in the first mounting portion 602W locks the engaging member described later of the first cartridge 10 in the mounted state of the first cartridge 10.

The regulation portion 635 (FIGS. 4 and 5) is a wall portion protruding from the side wall portion 603 on the first device side to the cartridge mounting portion 602 side (+ Y direction side). The regulating portion 635 is located below the device-side engaging portion 632 and at least within a range in which the contact mechanism 70 is located in the Z direction. Three regulation units 635 are provided. When the three regulation units 635 are used separately, the reference numerals "635A", "635B", and "635C" are used.

The first regulation unit 635A is located on the −X axis direction side with respect to the contact mechanism 70A. The second regulation unit 635B is located on the + X direction side of the contact mechanism 70A and on the −X direction side of the contact mechanism 70B. The third regulation unit 635C is located on the + X direction side of the contact mechanism 70B.

The first regulation unit 635A and the second regulation unit 635B are arranged so as to sandwich the contact mechanism 70A in the X direction. That is, the contact mechanism 70A is arranged in the space portion where the side surface in the X direction is formed by the first regulation unit 635A and the second regulation unit 635B. Further, the second regulation unit 635B and the third regulation unit 635C are arranged so as to sandwich the contact mechanism 70B in the X direction. That is, the contact mechanism 70B is arranged in the space portion where the side surface in the X direction is formed by the second regulation unit 635B and the third regulation unit 635C.

The first regulation unit 635A (FIG. 5) has a first regulation wall surface 635fa facing the device side terminal group 799 of the contact mechanism 70A in the X direction. The first regulation wall surface 635fa forms the + X direction side surface of the first regulation portion 635A. The first regulation wall surface 635fa is a surface facing the + X direction. That is, the first regulated wall surface 635fa is a plane substantially parallel to the Y direction and the Z direction.

The second regulation unit 635B (FIG. 4) has a second regulation wall surface 635fb facing the device side terminal group 799 of the contact mechanism 70A in the X direction. The second regulation wall surface 635fb is a surface facing the first regulation wall surface 635fa with the device side terminal group 799 of the contact mechanism 70A interposed therebetween in the X direction, and is a surface facing the −X direction. That is, the second regulated wall surface 635fb is a plane substantially parallel to the Y direction and the Z direction. The second regulation wall surface 635fb forms a side surface on the −X direction side of the second regulation portion 635B. The second regulation unit 635B further has a third regulation wall surface 635fc (FIG. 5) facing the device side terminal group 799 of the contact mechanism 70B in the X direction. The third regulation wall surface 635fc forms the + X direction side surface of the second regulation portion 635B. The third regulation wall surface 635fc is a surface facing the + X direction. That is, the third regulated wall surface 635fc is a plane substantially parallel to the Y direction and the Z direction.

The third regulation unit 635C (FIG. 4) has a fourth regulation wall surface 635fd facing the device side terminal group 799 of the contact mechanism 70B in the X direction. The third regulation unit 635C may be configured as a part of the third device side side wall portion 605. The fourth regulated wall surface 635 fd is a surface facing the third regulated wall surface 635 fc with the device side terminal group 799 of the contact mechanism 70B sandwiched in the X direction, and is a surface facing the −X direction. That is, the fourth regulated wall surface 635fd is a plane substantially parallel to the Y direction and the Z direction.

The cartridge identification convex portion 616 (FIG. 3) is a member for preventing cartridges other than the second cartridge 20 from being mounted on the second mounting portion 602T, and is a convex portion extending in the + Z direction from the bottom wall portion 601 on the device side. The shape. The second cartridge 20 has an uneven portion that fits into the cartridge identification convex portion 616. Cartridges other than the second cartridge 20, for example, the first cartridge 10 and cartridges used in liquid injection devices of different models do not have an uneven portion that fits into the cartridge identification convex portion 616. The cartridge identification convex portion 616 can reduce the possibility that a cartridge different from the second cartridge 20 that should be originally mounted on the second mounting portion 602T is mounted. The cartridge identification convex portion 616 is located on the + X direction side (third device side side wall portion 605 side) and the + Y direction side (second device side side wall portion 604 side) of the second mounting portion 602T.

The device-side protrusion 638 (FIGS. 3 and 5) is a rod-shaped member extending in the + Z direction from the device-side first wall portion 601. The device side protrusion 638 is inserted into a recess described later in the second cartridge 20. The device side protrusion 638 is located on the + Y direction side (second device side side wall portion 604 side) of the second mounting portion 602T.

The cartridge holder 60 further has a guide protrusion 617 (FIGS. 3 to 5). The guide convex portion 617 is a member provided at a corner where the second device side side wall portion 604 and the fourth device side side wall portion 606 intersect, and protrudes toward the second mounting portion 602T of the cartridge mounting portion 602. The guiding convex portion 617 extends in the + Z direction from the first wall portion 601 on the device side. The guide convex portion 617 guides the mounting of the second cartridge 20 on the second mounting portion 602T. Further, the guiding convex portion 617 is a portion that comes into contact with the second cartridge 20 in the mounted state of the second cartridge 20.

The cartridge holder 60 (FIGS. 3-5) further has a compartment wall 604R. The partition wall 604R is a plate-shaped member protruding inward (−Y direction side) of the cartridge mounting portion 602 from the side wall portion 604 on the second device side. The partition wall 604R extends from the bottom wall portion 601 on the device side to the upper end portion of the side wall portion 604 on the second device side. The partition wall 604R is located at the boundary between the first mounting portion 602W and the second mounting portion 602T.

FIG. 8 is a schematic view for explaining the head 540. FIG. 9 is a cross-sectional view taken along the line 9-9 of FIG. The head 540 (FIG. 8) has a first-class injection port portion 544D and a plurality of second-class injection port portions 544A, 544B, 544C (three in the present embodiment). The first-class injection port portion 544D (FIG. 9) communicates with the first liquid storage chamber 100 (FIG. 9) of the first cartridge 10 that accommodates one type of liquid (black ink in this embodiment). The first-class injection port portion 544D ejects one kind of liquid contained in the first cartridge 10. The second type injection port portion 544A communicates with the second liquid storage chamber 200A (FIG. 9) of the second cartridge 20. The second type injection port portion 544B communicates with the second liquid storage chamber 200B (FIG. 9) of the second cartridge 20. The second type injection port portion 544C communicates with the second liquid storage chamber 200C (FIG. 9) of the second cartridge. The second liquid storage chamber 200A stores yellow ink, the second liquid storage chamber 200B stores magenta ink, and the second liquid storage chamber 200C stores cyan ink. That is, the second-class injection port portions 544A to 544C are provided for each of the plurality of types of liquids accommodated in the second cartridge 20, and eject the corresponding liquids of the plurality of types of liquids.

As shown in FIG. 8, the first-class injection port portion 544D and the second-class injection port portion 544A, 544B, 544C each have a plurality of injection ports 546 formed on the lower surface 542 of the head 540. From the injection port 546, the liquid supplied to the head 540 via the liquid supply needles 640 (640A to 640D) and the flow paths FLA to FLD (FIG. 9) is directed to the outside (for example, the print medium 515). Be ejected. When the injection ports 546 of the injection port portions 544A to 544D are used separately, the reference numerals "546A", "546B", "546C", and "546D" are used.

One type of liquid (black ink in this embodiment) supplied from the first cartridge 10 to the head 540 is ejected from each injection port 546D (FIG. 8) of the first type injection port portion 544D. One type of liquid, which is one of the three types of liquid contained in the second cartridge 20, is ejected from each of the injection ports 546A to 546C of the second type injection port portions 544A to 544C. Specifically, yellow ink is ejected from each injection port 546A of the second type injection port portion 544A, magenta ink is ejected from each injection port 546B of the second type injection port portion 544B, and the second type injection port is ejected. Cyan ink is ejected from each ejection port 546C of the portion 544C. The number of each injection port 546A to 546C of the three injection port portions 544A to 544C is the same.

The number of injection ports 546D included in the first-class injection port portion 544D is larger than the number of injection ports 546A to 546C included in each of the second-class injection port portions 544A to 544C. In the present embodiment, the number of injection ports 546D is three times the number of injection ports 546A, injection port 546B, and injection port 546C. As a result, the first-class injection port portion 544D has a larger maximum injection amount per unit time than the second-class injection port portions 544A to 544C. For example, the maximum injection amount of the first-class injection port portion 544D is 6 g / min, and the maximum injection amount of each of the second-class injection port portions 544A to 544C is 2 g / min. The maximum injection amount of the first type injection port portion 544D and the second type injection port portion 544A to 544C was adjusted by the number of injection ports 546D and the number of injection ports 546A to 546C, but is limited to this. is not. For example, the maximum injection amount may be changed by changing the type and performance of the liquid injection mechanism (for example, piezoelectric vibration element) that controls the injection of the liquid, or the maximum injection may be changed by changing the opening diameters of the injection ports 546A to 546D. The amount may be changed.

A-3. Outline of the internal configuration of the cartridge and the mounting state of the cartridge:
In addition to FIG. 9 above, the internal configuration of the first cartridge 10 and the second cartridge 20 and the outline of the mounting state of the first cartridge 10 and the second cartridge 20 in the cartridge holder 60 will be described with reference to FIG. FIG. 10 is a cross-sectional view taken along the line 10-10 of FIG. A part of FIG. 10 is schematically shown.

As shown in FIG. 9, in the mounted state of the first cartridge 10 and the second cartridge 20, the second cartridge 20 and the cartridge holder 60 (details) rather than the distance D2 between the first cartridge 10 and the second cartridge 20 in the X direction. The distance D1 from the side wall portion 606) on the side of the fourth device is larger.

When the first cartridge 10 is attached to the cartridge holder 60 (FIG. 9), the liquid supply needle 640D is inserted into the liquid supply port 180 of the first cartridge 10. As a result, black ink is supplied from the first liquid storage chamber 100 to the head 540 via the liquid supply needle 640D. The first liquid storage chamber 100 does not have a liquid absorber for holding (absorbing) the liquid. That is, the first cartridge 10 is a direct liquid type cartridge. In the first liquid storage chamber 100, a valve mechanism 150 for opening and closing a flow path connecting the first liquid storage chamber 100 and the liquid supply port 180 is arranged. The valve mechanism 150 has, for example, the same configuration as the valve of JP2013-248786A. Specifically, the valve mechanism 150 has a valve body 152 that closes the communication hole 142. The communication hole 142 and the valve body 152 are provided in the middle of the flow path connecting the first liquid storage chamber 100 and the liquid supply port 180. Since the ink flows from the first liquid storage chamber 100 toward the liquid supply port 180, the liquid supply port 180 side is set as the downstream side. The flow path connecting the first liquid storage chamber 100 and the liquid supply port 180 is normally closed by the valve body 152 receiving the urging force of the urging member 155 and closing the communication hole 142. .. In this state, when the liquid on the downstream side of the valve body 152 is consumed and the negative pressure on the downstream side of the valve body 152 reaches a predetermined magnitude, the valve body 152 becomes the urging force of the urging member 155. In opposition, it is displaced away from the communication hole 142. When the valve body 152 is separated from the communication hole 142, the liquid is supplied from the upstream side portion to the downstream side portion of the valve body 152 through the communication hole 142. When a predetermined amount of liquid is supplied to the portion downstream of the valve body 152 and a predetermined pressure (negative pressure) is reached, the valve body 152 is displaced so as to close the communication hole 142 by the urging force of the urging member 155. To do. The first liquid storage chamber 100 communicates with the atmosphere, and the atmosphere is introduced into the first liquid storage chamber 100 as the liquid is consumed.

When the second cartridge 20 is attached to the cartridge holder 60, the corresponding liquid supply needle 640 is inserted into the liquid supply port 280 of the second cartridge 20. As a result, yellow ink, magenta ink, and cyan ink are supplied from the second liquid storage chamber 200 to the head 540 via the liquid supply needle 640. The second cartridge 20 has a plurality of (three in the present implementation liquid) second liquid storage chambers 200 for storing each of the three types of liquids. When the three second liquid storage chambers 200 are used separately, the symbols "200A", "200B", and "200C" are used. The three second liquid storage chambers 200A to 200C are partitioned by partition walls 22 and 23 so that the liquids do not mix with each other. The second liquid storage chamber 200A contains yellow ink, the second liquid storage chamber 200B contains magenta ink, and the second liquid storage chamber 200C contains cyan ink. Each of the three second liquid storage chambers 200A to 200C houses a liquid absorber (liquid holding member) 299. The liquid absorber 299 is a member for holding (absorbing) a liquid by a predetermined capillary force, and is a fiber member obtained by bundling a foaming member such as urethane foam, which is processed into a fibrous form of polypropylene. You may. Each liquid absorber 299 is arranged in substantially the entire area in each of the second liquid storage chambers 200A to 200C. Unlike the first liquid storage chamber 100, the second liquid storage chambers 200A to 200C are not provided with the valve mechanism 150. In the second cartridge 20, the valve mechanism 150 is unnecessary because the negative pressure in the liquid storage chambers 200A to 200C is maintained by the capillary force of the liquid absorber 299. The upstream portion of each of the second liquid storage chambers 200A to 200C communicates with the atmosphere, and the atmosphere is introduced into each of the second liquid storage chambers 200A to 200C as the liquid is consumed.

A valve mechanism 284 is arranged inside each of the liquid supply ports 180, 280A to 280C. The valve mechanism 284 (FIG. 10) opens and closes the internal flow paths of the liquid supply ports 180 and 280. The valve mechanism 284 includes a seal portion (valve seat) 287, a valve body 286, and an urging member 285 in this order from the tip side of the liquid supply ports 180 and 280. The seal portion 287 is a substantially annular member. The seal portion 287 is made of, for example, an elastic body such as rubber or an elastomer. The seal portion 287 is press-fitted into the liquid supply ports 180 and 280. The seal portion 287 is in airtight contact with the outer peripheral surface of the liquid supply needle 640 in the mounted state, thereby suppressing the liquid from leaking to the outside through the gap between the liquid supply ports 180 and 280 and the liquid supply needle 640. The valve body 286 is a substantially columnar member. The valve body 286 was urged by the urging member 285 in the direction toward the seal portion 287 before the cartridges 10 and 20 were mounted on the cartridge holder 60 (not mounted), and was formed on the seal portion 287. It is closing the hole. That is, the valve mechanism 284 is in the closed state in the unmounted state. The urging member 285 is a compression coil spring. In the mounted state of the cartridges 10 and 20, the liquid supply needle 640 pushes the valve body 286 in the direction away from the seal portion 287, so that the valve body 286 is separated from the seal portion 287. As a result, the valve mechanism 284 is opened.

As shown in FIG. 10, in the mounted state of the second cartridge 20, the engaging member 230 of the second cartridge 20 is locked to the lower surface 633 of the device-side engaging portion 632A. The surface 633 is a surface facing the −Z direction. The engaging member 230 is a member operated by the user to attach / detach the second cartridge 20 to / from the second mounting portion 602T, and is an elastic lever. The engaging member 230 has a cartridge-side engaging portion 235 that is locked to the surface 633. The mounted second cartridge 20 receives an urging force (external force) FP1 in the + Y direction from the device-side terminal group 799 of the contact mechanism 70A to the cartridge-side terminal group 499 of the circuit board 400. Further, the mounted second cartridge 20 receives an external force (reaction force) FP2 generated by the valve body 286 being pushed up in the + Z direction by the liquid supply needle 640 and the urging member 285 being compressed. Further, the second cartridge 20 in the mounted state is elastically deformed when the seal portion 287 is pushed by the liquid supply needles 640A to 640C. The reaction force of this elastic deformation receives an external force FP3 along the XY plane parallel to the X and Y directions. The external force FP3 includes an external force in the X direction and an external force in the Y direction.

In the mounted state, the cartridge-side engaging portion 235 of the second cartridge 20 is locked to the surface 633 of the device-side engaging portion 632A. By engaging the cartridge side engaging portion 235 and the device side engaging portion 632A, it is restricted that the second cartridge 20 moves in the + Z direction by the external force FP2. The configuration for restricting the movement of the second cartridge 20 by the external force FP1 and the external force FP3 will be described later.

A-4. Detailed configuration of the first cartridge 10:
FIG. 11 is a first perspective view of the first cartridge 10. FIG. 12 is a second perspective view of the first cartridge 10. The mounting direction of the first cartridge 10 to the cartridge holder 60 is the −Z direction, and the removing direction is the + Z direction.

As shown in FIGS. 11 and 12, the external shape of the first cartridge 10 is a substantially rectangular parallelepiped shape. The outer surface (outer shell) 12 of the first cartridge 10 includes six surfaces. The six surfaces are a bottom surface 14, an upper surface 13, a front surface (first side surface) 16, a back surface (second side surface) 15, a left side surface (third side surface) 17, and a right side surface (fourth side surface) 18. The six surfaces 13 to 18 form the outer shell 12 of the first cartridge 10. Each surface 13 to 18 is flat. The flat shape includes a case where the entire surface is completely flat and a case where a part of the surface has irregularities. That is, a part of the surface may have some unevenness. The outer shape of each of the surfaces 13 to 18 in a plan view is substantially rectangular.

The first cartridge 10 has a first liquid storage chamber 100 that stores one type of liquid (black ink in this embodiment). One type of liquid (black ink) contained in the first liquid storage chamber 100 is an ink containing a pigment (pigment ink). The pigment ink is an ink in which a pigment is dispersed in a dispersion medium such as water.

The bottom surface 14 is a concept including a wall forming the bottom wall of the first cartridge 10 in the mounted state, and can also be referred to as a “bottom wall portion (bottom wall) 14”. Further, the upper surface 13 is a concept including a wall forming the upper wall of the first cartridge 10 in the mounted state, and can also be referred to as a “top wall portion (upper wall) 13”. Further, the front surface 16 is a concept including a wall forming the front wall of the first cartridge 10 in the mounted state, and can also be referred to as a “front wall portion (front wall) 16”. Further, the back surface 15 is a concept including a wall forming the back wall of the first cartridge 10 in the mounted state, and can also be referred to as a “back wall portion (back wall) 15”. Further, the left side surface 17 is a concept including a wall forming the left side wall of the first cartridge 10 in the mounted state, and can also be called a “left side surface wall portion (left side surface wall) 17”. Further, the right side surface 18 is a concept including a wall forming the right side wall of the first cartridge 10 in the mounted state, and can also be referred to as a “right side wall portion (right side wall) 18”. The "wall portion" and "wall" do not have to be formed by a single wall, and may be formed by a plurality of walls.

The top surface 13 and the bottom surface 14 face each other in the Z direction. The upper surface 13 is located on the + Z direction side, and the bottom surface 14 is located on the −Z direction side. In the mounted state, the bottom surface 14 faces the device-side bottom wall portion 601 (FIG. 4) of the cartridge holder 60. The upper surface 13 and the bottom surface 14 are horizontal surfaces in the mounted state. The top surface 13 and the bottom surface 14 intersect the back surface 15, the front surface 16, the left side surface 17, and the right side surface 18 at substantially right angles. The upper surface 13 and the bottom surface 14 are planes parallel to the X direction and the Y direction. The upper surface 13 and the bottom surface 14 are planes orthogonal to the Z direction. When the plane parallel to the X direction and the Y direction (the plane orthogonal to the Z direction) is the XY plane, the upper surface 13 and the bottom surface 14 are planes parallel to the XY plane.

The back surface 15 and the front surface 16 face each other in the Y direction. The back surface 15 is located on the −Y direction side, and the front surface 16 is located on the + Y direction side. In the mounted state, the back surface 15 faces the first device side side wall portion 603 (FIG. 4) of the cartridge holder 60. In the mounted state, the front surface 16 faces the second device side side wall portion 604 (FIG. 4) of the cartridge holder 60. The back surface 15 and the front surface 16 are vertical surfaces in the mounted state. The back surface 15 and the front surface 16 intersect with the upper surface 13, the bottom surface 14, the right side surface 18, and the left side surface 17 at substantially right angles. The back surface 15 and the front surface 16 are planes parallel to the X direction and the Z direction. The back surface 15 and the front surface 16 are planes orthogonal to the Y direction. When the plane parallel to the X direction and the Z direction (the plane orthogonal to the Y direction) is the XZ plane, the back surface 15 and the front surface 16 are planes parallel to the XZ plane.

The left side surface 17 and the right side surface 18 face each other in the X direction. The left side surface 17 is located on the + X direction side, and the right side surface 18 is located on the −X direction side. In the mounted state, the left side surface 17 faces the third device side side wall portion 605 (FIG. 4) of the cartridge holder 60. In the mounted state, the right side surface 18 faces the second cartridge 20. The left side surface 17 and the right side surface 18 are vertical surfaces in the mounted state. The left side surface 17 and the right side surface 18 intersect with the upper surface 13, the bottom surface 14, the back surface 15, and the front surface 16 at substantially right angles. The left side surface 17 and the right side surface 18 are planes parallel to the Y direction and the Z direction. The left side surface 17 and the right side surface 18 are planes orthogonal to the X direction. When the plane parallel to the Y direction and the Z direction (the plane orthogonal to the X direction) is the YZ plane, the left side surface 17 and the right side surface 18 are planes parallel to the YZ plane.

Comparing the length (dimension in the Y direction), width (dimension in the X direction), and height (dimension in the Z direction) of the first cartridge 10, the length is the largest and the width is the smallest. The size relationship of the length, width, and height of the first cartridge 10 can be arbitrarily changed. For example, the height may be the largest and the width may be the smallest, and the height, length, and width may be changed. May be equal.

As shown in FIG. 11, one liquid supply port 180 is projected and arranged on the bottom surface 14. The liquid supply port 180 has a substantially cylindrical shape. The liquid supply port 180 has a central axis CT along the Z direction. As shown in FIG. 9, in the mounted state in which the first cartridge 10 is mounted on the carriage 520, the liquid supplied to the liquid supply port 180 is provided with the liquid provided in the first mounting portion 602W (FIGS. 2 and 3) of the cartridge holder 60. The feed needle 640D (FIG. 2) is inserted. An opening 188 for circulating the ink of the first liquid storage chamber 100 to the outside is formed on the end surface of the liquid supply port 180. In the first cartridge 10 before being mounted on the first mounting portion 602W of the liquid injection device 50, the opening 188 is closed with the film 183. The film 183 is configured to be broken by the liquid supply needle 640D when the first cartridge 10 is mounted on the first mounting portion 602W.

As shown in FIG. 12, the circuit board 30 is provided on the back surface 15 at a position closer to the bottom surface 14 than the top surface 13.

The configuration of the circuit board 30 is the same as that of the circuit board 400 of the second cartridge 20 described later. On the surface of the circuit board 30, a plurality of (nine) cartridge-side terminals 31 forming a plurality (nine) contact portions are formed. Each of the plurality of cartridge-side terminals 31 comes into contact with the device-side terminal group 799 (FIG. 4) of the contact mechanism 70B in the mounted state. As a result, the circuit board 30 is electrically connected to the control unit 510 (FIG. 1) of the liquid injection device 50. A rewritable storage device (memory) is provided on the back surface of the circuit board 30. The storage device stores information about the first cartridge 10, such as the ink consumption of the first cartridge 10 and the ink color.

Further, an engaging member 120 as a lever is provided on the upper surface 13 side of the back surface 15 with respect to the circuit board 30. The end portion of the engaging member 120 on the −Z direction side is connected to the back surface 15, and the engaging member 120 is elastically deformed in a direction having a Y direction component about the end portion on the −Z direction side. This elastic deformation is used for attaching and detaching the first cartridge 10 to and from the cartridge holder 60 (FIG. 1). The engaging member 120 has a cartridge-side engaging portion 122 that is locked to a lower surface (a surface facing the −Z direction) 633 (FIG. 10) of the device-side engaging portion 632D (FIG. 4). The cartridge-side engaging portion 122 is a protrusion protruding from the main body of the engaging member 120 in the −Y direction.

As shown in FIG. 11, an atmosphere inlet 19 is formed on the right side surface 18. The atmosphere introduction port 19 is an opening for introducing the atmosphere (air) into the first liquid storage chamber 100.

A-5. Detailed configuration of the second cartridge 20:
FIG. 13 is a first perspective view of the second cartridge 20. FIG. 14 is a second perspective view of the second cartridge 20. FIG. 15 is a top view of the second cartridge 20. FIG. 16 is a bottom view of the second cartridge 20. FIG. 17 is a rear view of the second cartridge 20. FIG. 18 is a front view of the second cartridge 20. FIG. 19 is a left side view of the second cartridge 20. FIG. 20 is a right side view of the second cartridge 20. FIG. 21 is a front view of the circuit board 400. FIG. 22 is a side view of the circuit board 400. As shown in FIG. 2, the second cartridge 20 is mounted on the carriage 520 side by side in the X direction with another cartridge (first cartridge) 10 having one liquid supply port. Similar to the case of the first cartridge 10, the mounting direction of the second cartridge 20 to the cartridge holder 60 is the −Z direction, and the removing direction is the + Z direction.

Comparing the length (dimension in the Y direction), width (dimension in the X-axis direction), and height (dimension in the Z direction) of the second cartridge 20 (FIG. 13), the length is the largest and the width is the smallest. The size relationship of the length, width, and height of the second cartridge 20 can be arbitrarily changed. For example, the height may be the largest and the width may be the smallest, and the height, length, and width may be changed. May be equal. Further, the second cartridge 20 has a larger dimension in the X direction than the first cartridge 10.

As shown in FIGS. 13 and 14, the external shape of the second cartridge 20 is a substantially rectangular parallelepiped shape. The outer shell 21 of the second cartridge 20 has six surfaces. The six surfaces are a bottom surface 201, an upper surface 202, a first side surface (front surface) 204, a second side surface (back surface) 203, a third side surface (left side surface) 205, and a fourth side surface (right side surface) 206. The six surfaces 201-206 form the outer shell 21 of the second cartridge 20. Each surface 2001-206 is flat. The flat shape includes a case where the entire surface is completely flat and a case where a part of the surface has irregularities. That is, a part of the surface may have some unevenness. The outer shapes of the surfaces 2001 to 206 in a plan view are substantially rectangular.

The second cartridge 20 (FIG. 15) contains a plurality of liquids (three in the present embodiment) each containing one of the above-mentioned liquids (yellow ink, magenta ink, and cyan ink in the present embodiment). It has a second liquid storage chamber 200A, 200B, 200C. The plurality of types of liquids (yellow ink, magenta ink, cyan ink) contained in the second cartridge 20 are dye inks, respectively.

The bottom surface 201 is a concept including a wall forming the bottom wall of the second cartridge 20 in the mounted state, and can also be referred to as a “bottom wall portion (bottom wall) 201”. Further, the upper surface 202 is a concept including a wall forming the upper wall of the second cartridge 20 in the mounted state, and can also be referred to as “upper wall portion (upper wall) 203”. Further, the first side surface 204 is a concept including a wall forming the front wall of the second cartridge 20 in the mounted state, and can also be referred to as a “front wall portion (front wall) 204”. Further, the second side surface 203 is a concept including a wall forming the back wall of the second cartridge 20 in the mounted state, and can also be referred to as a “back wall portion (back wall) 203”. Further, the third side surface 205 is a concept including a wall forming the left side wall in the mounted state, and can also be called a “left side wall portion (left side wall) 205”. Further, the fourth side surface 206 is a concept including a wall forming the right side wall in the mounted state, and can also be referred to as a “right side wall portion (left side wall) 206”. The "wall portion" and "wall" do not have to be formed by a single wall, and may be formed by a plurality of walls.

As shown in FIG. 19, the bottom surface 201 and the top surface 202 face each other in the Z direction. The bottom surface 201 is located on the −Z direction side, and the top surface 202 is located on the + Z direction side. In the mounted state, the bottom surface 201 faces the device-side bottom wall portion 601 (FIG. 4) of the cartridge holder 60. The bottom surface 201 and the top surface 202 are horizontal surfaces in the mounted state. The bottom surface 201 and the top surface 202 intersect with the first side surface 204, the second side surface 203, the third side surface 205, and the fourth side surface 206 at substantially right angles. The bottom surface 201 and the top surface 202 are planes parallel to the X direction and the Y direction. The bottom surface 201 and the top surface 202 are planes orthogonal to the Z direction. When the plane parallel to the X direction and the Y direction (the plane orthogonal to the Z direction) is the XY plane, the bottom surface 201 and the top surface 202 are planes parallel to the XY plane.

As shown in FIG. 15, the first side surface 204 and the second side surface 203 face each other in the Y direction. The first side surface 204 is located on the + Y direction side, and the second side surface 203 is located on the −Y direction side. In the mounted state, the first side surface 204 faces the second device side side wall portion 604 (FIG. 4) of the cartridge holder 60. The second side surface 203 faces the first device side side wall portion 603 (FIG. 4) of the cartridge holder 60. The first side surface 204 and the second side surface 203 are vertical surfaces in the mounted state. The first side surface 204 and the second side surface 203 intersect the bottom surface 201 (FIG. 19), the top surface 204 (FIG. 19), the third side surface 205, and the fourth side surface 206 at substantially right angles. The first side surface 204 and the second side surface 203 are planes parallel to the X direction and the Z direction. The first side surface 204 and the second side surface 203 are planes orthogonal to the Y direction. When the plane parallel to the X direction and the Z direction (the plane orthogonal to the Y direction) is the XZ plane, the first side surface 204 and the second side surface 203 are planes parallel to the XZ plane.

As shown in FIG. 15, the third side surface 205 and the fourth side surface 206 face each other in the X direction. The third side surface 205 is located on the + X direction side, and the fourth side surface 206 is located on the −X direction side. In the mounted state, the third side surface 205 faces the first cartridge 10. In the mounted state, the fourth side wall 206 faces the fourth device side side wall portion 606 (FIG. 4) of the cartridge holder 60. The third side surface 205 and the fourth side surface 206 intersect with the bottom surface 201, the top surface 202, the first side surface 204, and the second side surface 203 at substantially right angles. The third side surface 205 and the fourth side surface 206 are planes parallel to the Y direction and the Z direction. The third side surface 205 and the fourth side surface 206 are planes orthogonal to the X direction. When the plane parallel to the Y direction and the Z direction (the plane orthogonal to the X direction) is the YZ plane, the third side surface 205 and the fourth side surface 206 are planes parallel to the YZ plane.

As shown in FIGS. 13 and 17, the second cartridge 20 has a circuit board 400 and an engaging member 230 on the second side surface 203.

The second side surface 203 has a first surface portion 242, a second surface portion 241 and a protruding surface portion 245. The protruding surface portion 245 is a portion that protrudes from the first surface portion 242 and the second surface portion 241 toward the cartridge holder 60 side (outer side, -Y direction side in the present embodiment). The wall thickness (Y direction dimension) of the protruding surface portion 245 is larger than the wall thickness (Y direction dimension) of the first surface portion 242 and the second surface portion 241 and is more rigid than the first surface portion 242 and the second surface portion 241. Is high. The protruding surface portion 245 is a second protruding surface portion connected to a first protruding surface portion 246 provided between the first surface portion 242 and the second surface portion 241 in the X direction and a + Z direction side end portion of the first protruding surface portion 246. It has 247 and. The first surface portion 242 is located on the −X direction side, which is one direction side in the X direction, with respect to the first protruding surface portion 246. The second surface portion 241 is located on the + X direction side, which is the other direction side in the X direction, with respect to the first protruding surface portion 246.

The first protruding surface portion 246 extends in the + Z direction from the portion where the bottom surface 201 and the second side surface 203 intersect to substantially the center in the Z direction of the second cartridge 20. The first protruding surface portion 246 is a member having a substantially rectangular shape. In the mounted state of the second cartridge 20, the first protruding surface portion 246 is arranged between the first regulating portion 635A and the second regulating portion 635B (FIG. 4). A circuit board 400 is provided on the first protruding surface portion 246. On the surface 400fa of the circuit board 400, a plurality of contact portions cp that come into contact with the device-side terminal group 799 (FIG. 7) of the second mounting portion 602T are arranged. The surface 400fa functions as an arrangement portion for arranging a plurality of contact portions cp. The details of the circuit board 400 will be described later.

The first protruding surface portion 246 has a first side portion 246B located on the first surface portion 242 side (−X direction side) and a second side portion 246A located on the second surface portion 241 side (+ X direction side). The first side portion 246B is a portion that forms a side surface of the first protruding surface portion 246 on the first surface portion 242 side and faces the −X direction. The second side portion 246A is a portion that forms a side surface of the first protruding surface portion 246 on the second surface portion 241 side and faces the + X direction.

The first side portion 246B is provided with a first protrusion 249 that protrudes in the −X direction. The second side portion 246A is provided with a second protrusion 248 protruding in the + X direction. The first protrusion 249 and the second protrusion 248 are located on the upper surface 202 side (+ Z direction side) of the contact portion cp of the circuit board 400 in the Z direction. In the mounted state of the second cartridge 20, the first protrusion 249 comes into contact with the first regulation portion 635A (FIG. 5). In the mounted state of the second cartridge 20, the second protrusion 248 comes into contact with the second regulation portion 635B (FIG. 4).

The first surface portion 242 is provided with a recess 222 at a distance from the protruding surface portion 245. In this embodiment, three recesses 222 are provided. The second surface portion 241 is provided with a recess 221 at a distance from the protruding surface portion 245. In this embodiment, three recesses 221 are provided. The recesses 222 and 221 can increase the rigidity of the first surface portion 242 and the second surface portion 241. In another embodiment, the concave portion 222,221 may be provided with a convex portion, or both the concave portion 222,221 and the convex portion may be provided. Even in this way, the rigidity of the first surface portion 242 and the second surface portion 241 can be increased.

The second protruding surface portion 247 is a substantially rectangular parallelepiped portion extending along the X direction. A base end portion (first end portion) 231 of the engaging member 230 is connected to the second protruding surface portion 247.

As shown in FIG. 17, the circuit board 400 is provided on the first protruding surface portion 246. The circuit board 400 has a boss groove 401 formed at the end on the + Z direction side and a boss hole 402 formed at the end on the −Z direction side. The circuit board 400 is fixed to the first protruding surface portion 246 of the cartridge 20 by using the boss groove 401 and the boss hole 402. In the present embodiment, the boss groove 401 and the boss hole 402 pass through the center of the second cartridge 20 in the X direction and intersect with a plane PCP parallel to the Y direction and the Z direction (perpendicular to the X direction). In another embodiment, at least one of the boss groove 401 and the boss hole 402 may be omitted from the circuit board 400, and the circuit board 400 may be fixed to the first protruding surface portion 246 using an adhesive, or the first protruding surface portion 246 may be used. The circuit board 400 may be fixed by using an engaging claw (not shown) provided on the surface portion 246 side.

As shown in FIG. 22, the circuit board 400 has a cartridge-side terminal group 499 (FIG. 22) provided on the front surface 400fa as an arrangement portion, and a storage device 420 provided on the back surface 400fb. The front surface 400fa and the back surface 400fb are flat surfaces. The surface 400fa is a surface parallel to the mounting direction (−Z direction) of the second cartridge 20. In the present embodiment, the surface 400fa is a plane parallel to the X direction and the Z direction. The portion (one side) of the surface 400fa located on the + Z direction side in the state of being attached to the second cartridge 20 is also referred to as a substrate end portion 405.

The cartridge-side terminal group 499 includes nine cartridge-side terminals 431 to 439. The storage device 420 stores information about the second cartridge 20. The information regarding the second cartridge 20 includes, for example, information indicating the type of liquid to be contained, information indicating the amount of liquid to be contained, information indicating the amount of liquid consumed, and information indicating the date of manufacture of the second cartridge 20. is there.

As shown in FIG. 21, each of the nine cartridge-side terminals 431 to 439 is formed in a substantially rectangular shape, and is arranged so as to form two rows substantially perpendicular to the −Z direction, which is the mounting direction. The substantially vertical row is a row extending in the width direction (X direction) of the second cartridge 20. Of the two rows, the row on the back side (-Z direction side) in the mounting direction is called the first terminal row RN1 (lower row RN1), and the row on the front side (+ Z direction side) in the mounting direction is the second row. It is also called the terminal row RN2 (upper row RN2) of. That is, the positions of the first terminal row RN1 and the second terminal row RN2 are different in the Z direction. Specifically, the first terminal row RN1 is located on the −Z direction side with respect to the second terminal row RN2. At the central portion of each of the terminals 431 to 439, there is a contact portion cp that contacts the device-side terminal group 799 (FIGS. 5 and 7) of the contact mechanism 70A. The first and second terminal rows RN1 and RN2 may be considered to be a row formed by a plurality of contact portions cp.

Each cartridge side terminal 431 to 439 can be called as follows from the function (use). Further, in order to clarify the distinction from the terminal on the liquid injection device 50 side, it may be referred to by adding "cartridge side" in front of each name. For example, the "ground terminal 437" can also be called the "cartridge-side ground terminal 437".
<First terminal row RN1>
(1) Mounting detection terminal (first terminal) 435
(2) Power supply terminal 436
(3) Ground terminal 437
(4) Data terminal 438
(5) Mounting detection terminal (second terminal) 439
<Second terminal row RN2>
(6) Mounting detection terminal (third terminal) 431
(7) Reset terminal 432
(8) Clock terminal 433
(9) Mounting detection terminal (fourth terminal) 434

The contact portions cp of the terminals 435-439 forming the first terminal row RN1 and the contact portions cps of the terminals 431 to 434 forming the second terminal row RN2 are arranged alternately. In this embodiment, each contact portion cp is arranged in a so-called staggered pattern.

The four mounting detection terminals 431, 434, 435, 439 detect the quality of electrical contact with the terminals of the corresponding device-side terminal group 799 (FIG. 4) provided in the contact mechanism 70A, so that the cartridge 20 can be moved. It is used by the liquid injection device 50 to detect whether or not the cartridge holder 60 is correctly mounted at the designed mounting position. Therefore, the four mounting detection terminals 431, 434, 435, 439 can also be referred to as "mounting detection terminal group". In the present embodiment, the four cartridge-side terminals 431, 434, 437, 439 are electrically connected to each other inside the circuit board 400, and the second cartridge 20 is mounted on the cartridge holder 60 (FIG. 4). At that time, it is electrically connected to the grounding line (not shown) on the liquid injection device 50 side through the grounding terminal 437.

The other five cartridge-side terminals 432, 433, 436, 437, 438 are terminals for the storage device 420. Therefore, the five terminals 432, 433, 436, 437, 438 can also be referred to as a "memory terminal group".

The reset terminal 432 receives the supply of the reset signal RST to the storage device 420. The clock terminal 433 receives the supply of the clock signal SCK to the storage device 420. The power supply terminal 436 receives the supply of the power supply voltage VDD (for example, rated 3.3V) to the storage device 420. The ground terminal 437 receives the supply of the ground voltage VSS (0V) to the storage device 420. The data terminal 438 receives the supply of the data signal SDA to the storage device 420.

The first terminal 435, which is one of the mounting detection terminal groups, includes the first outer portion 435P located on the most −X direction side of the cartridge side terminal group 499. The second terminal 439, which is one of the mounting detection terminal groups, includes the second outer portion 439P located on the most + X direction side of the cartridge side terminal group 499. The third terminal 431, which is one of the mounting detection terminal groups, includes the third outer portion 431P located on the most −X direction side of the second terminal row RN2. The fourth terminal 434, which is one of the mounting detection terminal groups, includes the fourth outer portion 434P located on the most + X direction side of the second terminal row RN2.

Of the plurality of contact portions cp, the ground terminal 437 having the contact portion (central contact portion) cp provided at the center in the X direction is provided at a position where it intersects with the flat PCP. When the central contact portion cp is used in distinction from other contact portion cp, the symbol "cpc" is used. The contact portions cp of the remaining terminals 431 to 436, 438 and 439 are provided at positions that are line-symmetrical with respect to the intersection line between the plane PCP and the ground terminal 437. That is, a plurality of (nine in this embodiment) contact portions cp are arranged so as to be symmetrical with respect to the plane PCP. The plane PCP is the same surface as the first central surface PC described later.

As shown in FIG. 17, the plurality of contact portions cp of the circuit board 400 are arranged side by side in the X direction at positions closer to the bottom surface 201 than the top surface 202 on the second side surface 203. Aligning in the X direction means that a plurality of contact portions cps are arranged at different positions in the X direction.

The ground terminal 437 (FIG. 21) comes into contact with the contact mechanism 70A (FIG. 4) by the other cartridge side terminals 431 to 436, 438, 439 (FIG. 21) when the second cartridge 20 is mounted on the cartridge holder 60. It is configured to come into contact with the contact mechanism 70A prior to the above. As a result, the urging force first applied from the cartridge holder 60 to the circuit board 400 is generated at the center of the second cartridge 20 in the X direction. Therefore, the action of the urging force applied to the circuit board 400 acting as a force for tilting the second cartridge 20 in the X direction is suppressed, and the second cartridge 20 can be mounted at the designed mounting position. Further, since the ground terminal 437 contacts the contact mechanism 70A of the cartridge holder 60 before the other cartridge side terminals 431 to 436, 438, 439, when an unintended high voltage is applied to the second cartridge 20 side. Even if there is, the grounding function of the grounding terminal 437 can reduce the trouble caused by the high voltage.

As shown in FIGS. 13 and 17, the engaging member 230 as a lever is provided on the upper surface 202 side of the contact portion cp on the second side surface 203. That is, at least a part of the engaging member 230 is located in the range WA (FIG. 21) where the plurality of contact portions cp are located in the X direction. The engaging member 230 includes a first end portion (base end portion) 231 on the −Z direction side, a second end portion (tip portion) 232 on the + Z direction side, a first end portion 231 and a second end portion 232. It has a cartridge-side engaging portion 235 located between the two. The first end portion 231 is connected to the second protruding surface portion 247 of the second side surface 203. The engaging member 230 is elastically deformed in a direction having a Y-direction component so that the second end portion 232 side approaches or moves away from the second side surface 203 with the first end portion 231 as the center. This elastic deformation is used for attaching and detaching the second cartridge 20 to and from the cartridge holder 60 (FIG. 4). The cartridge-side engaging portion 235 is a protrusion protruding from the main body of the engaging member 230 in the −Y direction. The cartridge-side engaging portion 235 extends along the X direction. In the mounted state of the second cartridge 20, the upper surface of the cartridge-side engaging portion 235 is locked to the lower surface 633 (FIG. 10) of the device-side engaging portion 632A. This locking is released when the second end portion 232 is pushed so as to approach the second side surface 203 side and the cartridge side engaging portion 235 is displaced toward the second side surface 203 side.

As shown in FIG. 14, the second cartridge 20 has a liquid supply unit 289, protrusions 262, 263, and recesses 264 provided on the bottom surface 201. The liquid supply unit 289 projects from the bottom surface 201 in the −Z direction. At least the portion on the −Z direction side of the liquid supply unit 289 is arranged in the area 611 (FIG. 3) surrounding the three liquid supply needles 640A, 640B, and 640C by the device side regulation wall portion 615 in the mounted state of the second cartridge 20. Will be done. The liquid supply unit 289 has an odd number (three in this embodiment) of liquid supply ports 280A, 280B, 280C, and three peripheral members 283A, which are provided corresponding to the liquid supply ports 280A, 280B, 280C, respectively. It has 283B and 283C. When the three liquid supply ports 280A, 280B, and 280C are used without distinction, the reference numeral "280" is used. When the three peripheral members 283A, 283B, and 283C are used without distinction, the reference numeral "283" is used.

As shown in FIGS. 14 and 16, the three liquid supply ports 280A, 280B, and 280C are arranged on the bottom surface 201 at positions closer to the second side surface 203 than to the first side surface 204. The three liquid supply ports 280A, 280B, and 280C are arranged on the bottom surface 201 at a position closer to the second side surface 203 than at an intermediate position between the first side surface 204 and the second side surface 203. In the present embodiment, the three liquid supply ports 280A, 280B, and 280C are arranged in the vicinity of the second side surface 203. The three liquid supply ports 280A, 280B, and 280C are arranged at positions on the bottom surface 201 that are biased toward the second side surface 203. Each of the three liquid supply ports 280A, 280B, and 280C has a cylindrical shape, the −Z direction side protrudes from the bottom surface 201, and the + Z direction side is located inside the outer shell 21. The three liquid supply ports 280A, 280B, and 280C each have a central axis CM, CC, and CN along the Z direction. When the central axis CM, CC, and CN are used without distinction, "central axis CX" is used.

The three liquid supply ports 280A, 280B, and 280C are arranged side by side in the X direction. In this embodiment, the three central axes CM, CC, and CN are located on a straight line parallel to the X direction. In other words, the three central axes CM, CC, and CN are all located on the XZ plane parallel to the X and Z directions (orthogonal to the Y direction). In another embodiment, it is sufficient that the predetermined straight line along the X direction intersects the three liquid supply ports 280A, 280B, and 280C, and the three central axes CM, CC, and CN are not necessarily arranged. Do not all have to be on the same XZ plane. The valve mechanism 284 (FIG. 10) described above is arranged inside each of the three liquid supply ports 280A, 280B, and 280C.

As shown in FIG. 16, the liquid supply port (central liquid supply port) 280B is located at the center (second from the −X direction side or the + X direction side) of the three liquid supply ports 280A, 280B, and 280C. To be located in the center means {(N + 1) / counting from one direction side (for example, -X direction side) of the X direction among N liquid supply ports (N is an odd number of 3 or more) arranged in the X direction. 2} means the second position. The central axis CC of the central liquid supply port 280B passes through the central XCP of the second cartridge 20 in the X direction and intersects the plane PCP parallel to the Y and Z directions (perpendicular to the X direction).

As shown in FIGS. 9 and 16, the other two liquid supply ports 280A and 280C are located next to the central liquid supply port 280B. The liquid supply port 280C is located on the + X direction side of the central liquid supply port 280B. The liquid supply port 280C is located near the center of the carriage 520 (FIG. 4) in the X direction. That is, the liquid supply port 280C is located closer to the first mounting portion 602W (FIG. 4) in the X direction than the liquid supply port 280A. The liquid supply port 280C is located on the first cartridge 10 side. The liquid supply port 280A is located on the −X direction side of the central liquid supply port 280B. That is, the liquid supply port 280A is located on the side farthest from the first mounting portion 602W (first cartridge 10) in the X direction. The central axis CC of the central liquid supply port 280B is also called the first central axis CC. Further, the central axis CN of the liquid supply port 280C is also referred to as a second central axis CN.

As shown in FIG. 14, the liquid supply ports 280A, 280B, and 280C each have an opening 288 at the end on the −Z direction side. The opening 288 is circular. The liquid supply port 280 does not have to be cylindrical, and the opening 288 does not have to be circular. The liquid supply port 280 may have a shape into which the liquid supply needle 640 can be inserted. In this case, the central axis CT of the liquid supply needle 640 in the mounted state may be regarded as the central axis of the liquid supply port 280.

As shown in FIG. 9, in the mounted state in which the second cartridge 20 is mounted on the carriage 520, the liquid supply ports 280A, 280B, and 280C are connected to the second mounting portion 602T (FIGS. 2 and 3) of the cartridge holder 60. The provided liquid supply needles 640A, 640B, 640C are inserted. That is, in the mounted state in which the second cartridge 20 is mounted on the carriage 520, the liquid supply ports 280A, 280B, 280C receive the liquid supply needles 640A, 640B, 640C. As shown in FIG. 14, in the second cartridge 20 before being mounted on the second mounting portion 602T, the opening 288 is closed with the film FM. The film FM is configured to be broken by the liquid supply needles 640A, 640B, 640C when the second cartridge 20 is mounted on the second mounting portion 602T.

As shown in FIG. 15, the liquid supply port 280A communicates with the second liquid storage chamber 200A that stores the yellow ink, and supplies the yellow ink of the second liquid storage chamber 200A to the liquid supply needle 640A. The liquid supply port 280B communicates with the second liquid storage chamber 200B that stores magenta ink, and supplies the magenta ink of the second liquid storage chamber 200B to the liquid supply needle 640B. The liquid supply port 280C communicates with the second liquid storage chamber 200C that stores cyan ink, and supplies the cyan ink of the second liquid storage chamber 200C to the liquid supply needle 640C.

As shown in FIG. 14, the peripheral members 283A, 283B, and 283C are members that project from the bottom surface 201 in the −Z direction. The peripheral member 283A projects from the outer peripheral surface of the liquid supply port 280A on both sides in the Y direction (+ Y direction side and −Y direction side). The peripheral member 283B projects from the outer peripheral surface of the liquid supply port 280B on both sides in the Y direction (+ Y direction side and −Y direction side). The peripheral member 283C projects from the outer peripheral surface of the liquid supply port 280C on both sides in the Y direction (+ Y direction side and −Y direction side). The peripheral members 283A, 283B, and 283C face the device-side regulation wall portion 615 (FIG. 3) in the X and Y directions when the second cartridge 20 is mounted. As a result, the possibility that the liquid supply ports 280A, 280B, and 280C move in the X direction and the Y direction in the mounted state can be reduced. Further, of the three peripheral members 283A, 283B, and 283C, the central peripheral member 283B has a regulation convex portion 282 on the side surface on the + Y direction side. The regulation convex portion 282 is located on the + Y direction side with respect to the central liquid supply port 280B. The regulation convex portion 282 protrudes in the + Y direction from the other portion of the surface of the central peripheral member 283B. The regulation convex portion 282 extends along the Z direction. The regulation convex portion 282 comes into contact with the device-side regulation wall portion 615 (FIG. 5) when the second cartridge 20 is mounted on the second mounting portion 602T (FIGS. 2 and 3).

The protrusions 262 and 263 each project from the bottom surface 201 in the −Z direction. The shapes of the protrusions 262 and 263 are substantially rectangular parallelepipeds. Of the protrusions 262 and 263, one is also called the first protrusion 262 and the other is also called the second protrusion 263. As shown in FIGS. 14 and 16, the protrusions 262 and 263 are provided on the bottom surface 201 at positions closer to the first side surface 204 than to the second side surface 203, respectively. In the present embodiment, the protrusions 262 and 263 are provided so as to be in contact with the lower end portion of the first side surface 204. The first protrusion 262 and the second protrusion 263 include the central axis CC of the central liquid supply port 280B, and are provided so as to sandwich the flat PCP perpendicular to the X direction. The first protrusion 262 is provided at a position close to the third side surface 205 on the bottom surface 201. The second protrusion 263 is provided at a position close to the fourth side surface 206 on the bottom surface 201. The functions of the protrusions 262 and 263 will be described later.

As shown in FIGS. 14 and 16, the recess 264 is provided at a position closer to the first side surface 204 than the second side surface 203 on the bottom surface 201. The recess 264 is provided so as to be in contact with the lower end of the first side surface 204. The recess 264 is located between the first protrusion 262 and the second protrusion 263. The recess 264, the first protrusion 262, and the second protrusion 263 are arranged side by side in the X direction. The recess 264 receives the device-side protrusion 638 (FIGS. 3 and 5) when the second cartridge 20 is mounted.

As shown in FIGS. 14 and 18, the second cartridge 20 has an uneven portion 257 provided on the first side surface 204. The concave-convex portion 257 is a combination of one end (corner portion) L1 in the X direction (+ X direction) and the other end (corner portion) R1 in the X direction (−X direction) of the first side surface 204. It is provided at at least one end. In the present embodiment, the uneven portion 257 is provided at the end portion L1 of the first side surface 204. That is, at least a part of the uneven portion 257 is provided in contact with the end portion L1 where the first side surface 204 and the third side surface 205 intersect.

The uneven portion 257 has a convex portion 250 and a concave portion 252 partitioned by the convex portion 250. The uneven portion 257 extends from the bottom surface 201 side of the first side surface 204 toward the top surface 202 side. In the present embodiment, the uneven portion 257 extends in the + Z direction from the portion where the first side surface 204 and the bottom surface 201 intersect to the vicinity of the substantially center in the Z direction of the first side surface 204. The −Z direction side of the recess 252 is open to receive the cartridge identification convex portion 616. The shape of the uneven portion differs depending on the type of cartridge (model number, etc.). Only when the second cartridge 20 having the concavo-convex portion 257 having the shape shown in FIGS. 14 and 18 is mounted on the second mounting portion 602T (FIGS. 2 and 3), the concavo-convex portion 257 is the cartridge identification convex portion 616 ( It fits with Fig. 3). Specifically, the cartridge identification convex portion 616 corresponding to the shape of the concave portion 252 of the uneven portion 257 fits into the concave portion 252 of the uneven portion 257. Even if a different type of cartridge is to be mounted on the second mounting portion 602T, the uneven portion of such a cartridge does not match the shape of the cartridge identification convex portion 616, and a part of the uneven portion and the cartridge identification convex portion 616 Collide. Therefore, different types of cartridges cannot be mounted on the second mounting portion 602T. In this way, the uneven portion 257 can prevent different types of cartridges from being mounted on the second mounting portion 602T.

As shown in FIG. 14, the second cartridge 20 further has a recess 258 provided at the corner R1 where the first side surface 204 and the fourth side surface 206 intersect. The recess 258 extends from the bottom surface 201 side of the first side surface 204 toward the top surface 202 side. In the present embodiment, the recess 258 extends in the + Z direction from the intersection of the first side surface 204 and the bottom surface 201 to the vicinity of the substantially center in the Z direction of the first side surface 204. The recess 258 has a shape recessed inside the outer shell 21 from the first side surface 204 and the fourth side surface 206, respectively. The recess 258 has a surface 258fa facing the −X direction and a surface 258fb facing the + Y direction.

In the mounted state of the second cartridge 20, the concave portion 258 receives the guiding convex portion 617 (FIGS. 3 and 5). In another embodiment, the recess 258 is the corner portion R1, the corner portion L1 where the first side surface 204 and the third side surface 205 intersect, and the corner portion L2 where the second side surface 203 and the third side surface 205 intersect (FIG. 15). ), It may be provided at at least one corner of the corner R2 (FIG. 15) where the second side surface 203 and the fourth side surface 206 intersect.

As shown in FIG. 13, since the first surface portion 242, the second surface portion 241 and the protruding surface portion 245 are provided on the second side surface 203, the second side surface 203 can have an uneven structure. As a result, the rigidity of the second side surface 203 can be increased. Further, by providing the circuit board 400 on the protruding surface portion 245 (specifically, the first protruding surface portion 246) having higher rigidity in the second side surface 203, the possibility that the protruding surface portion 245 is deformed by an external force can be reduced. Therefore, it is possible to suppress the fluctuation of the position of the contact portion cp provided on the surface 400fa of the circuit board 400 in the mounted state of the second cartridge 20, so that the contact portion cp of the circuit board 400 and the device side terminal group 799 can be contacted. It can be maintained well.

Further, by providing the engaging member 230 on the protruding surface portion 245 (specifically, the second protruding surface portion 247) having higher rigidity, the possibility that the protruding surface portion 245 is deformed by an external force can be reduced. As a result, the possibility that an excessive load is applied to the engaging member 230 can be reduced, and the engagement member 230 is deformed and the locking position of the cartridge side engaging portion 235 and the device side engaging portion 632A is displaced. Can be reduced. Therefore, it is possible to maintain good contact between the contact portion cp of the circuit board 400 and the device-side terminal group 799.

Further, as shown in FIGS. 13 and 14, the second cartridge 20 is provided with a protruding surface portion 245 on the second side surface 203, and a protruding surface portion on the first side surface 204 facing the second side surface 203 in the Y direction. Is not provided. When the second cartridge 20 is mounted on the carriage 520, the user can use the protruding surface portion 245 as a mark. Therefore, the possibility that the second cartridge 20 is mounted on the carriage 520 with the first side surface 204 and the second side surface 203 reversed can be reduced.

Further, as shown in FIG. 13, by providing the circuit board 400 on the first protruding surface portion 246, when the user or the manufacturer is carrying the second cartridge 20, the second cartridge 20 is accidentally dropped. In such a case, the surface 400fa of the circuit board 400 is more likely to collide with the falling surface before other parts. That is, when the second cartridge 20 is dropped, the circuit board 400 and the storage device (memory) are positively destroyed. As a result, when the second cartridge 20 is mounted on the carriage 520, the control unit 510 of the liquid injection device 50 can easily detect a defect in the second cartridge 20. If a portion of the second cartridge 20 other than the contact portion cp (for example, the upper surface or the bottom surface) is damaged, the control unit 510 can detect a defect in the second cartridge 20 when the second cartridge 20 is mounted on the carriage 520. However, the liquid injection device 50 may operate even though the second cartridge 20 is damaged, and the liquid injection device 50 may be damaged.

A-6. Positional relationship of each element of the second cartridge 20:
FIG. 23 is a diagram for explaining the positional relationship of each element of the second cartridge 20. FIG. 23 shows the second cartridge 20 when viewed in the direction (+ Y direction) from the second side surface 203 side to the first side surface 204 side in the Y direction.

As shown in FIG. 23, a plane including the first central axis CC and perpendicular to the X direction (a plane parallel to the Y direction and the Z direction) is defined as a first central plane (predetermined YZ plane) PC. In this embodiment, the first central surface PC coincides with the above-mentioned plane PCP (FIG. 17). The plane including the second central axis CN and perpendicular to the X direction (the plane parallel to the Y direction and the Z direction) is defined as the second central plane PN. A plane including the third central axis CM and perpendicular to the X direction (a plane parallel to the Y direction and the Z direction) is defined as the third central plane PL. The center of the cartridge-side engaging portion 235 in the X direction is defined as the engaging center CE. In the X direction, the range where the first protruding surface portion 246 is located is defined as the range W246, the range where the first surface portion 242 is located is defined as the range W242, and the range where the second surface portion 241 is located is defined as the range W241.

Of the plurality of contact portions cp, the central contact portion cpc provided at the center in the X direction intersects the first central surface PC. Further, the engagement center CE is located at a position deviated from the first center surface PC in the + X direction. The engagement center CE is located between the first center surface PC and the second center surface PN. Further, in the X direction, a part of the plurality of contact portions cp is located within the range WE where the cartridge side engaging portion 235 is located. That is, when the second cartridge 20 is viewed from the + Z direction side, a part of the plurality of contact portions cp overlaps with the cartridge side engaging portion 235 in the X direction. In the present embodiment, a part of the contact portion cp including the central contact portion cpc is located in the range WE in the X direction.

The first protruding surface portion 246 intersects with the first central surface PC. Further, in the X direction, the central axis CC of the central liquid supply port 280B is located within the range W246 where the first protruding surface portion 246 is located. Further, in the X direction, the central axis CM of the liquid supply port 280A on the −X direction side of the central liquid supply port 280B is located within the range W242 in which the first surface portion 242 is located. Further, in the X direction, the central axis CN of the liquid supply port 280C on the + X direction side of the central liquid supply port 280B is located within the range W241 where the second surface portion 241 is located.

A-7. About the external force applied to the cartridge 20:
FIG. 24 is a first diagram for explaining an external force applied to the second cartridge 20. FIG. 25 is a second diagram for explaining an external force applied to the second cartridge 20. When the second cartridge 20 is attached to the cartridge holder 60, an external force FP1 (FIG. 25), an external force FP2 (FIG. 24), and an external force FP3 (FIG. 25) are applied to the second cartridge 20.

The external force FP1 (FIG. 25) is an external force (urging force) applied to the contact portion cp of the circuit board 400 from the device-side terminal group 799 of the contact mechanism 70A. The external force FP1 is a force in the + Y direction. The external force FP2 (FIG. 24) is an external force (reaction force) generated when the valve body 286 is pushed up in the + Z direction by the liquid supply needles 640A, 640B, and 640C and the urging member 285 is compressed. The external force FP2 is a force in the + Z direction. The external force FP3 (FIG. 25) is an external force generated by the reaction force of the elastic deformation when the seal portion 287 is elastically deformed by the liquid supply needles 640A, 640B, 640C. The external force FP3 is a force along the XY plane parallel to the X and Y directions. Due to the external force FP1 to the external force FP3, the second cartridge 20 may move to some extent even when it is mounted on the second mounting portion 602T.

Further, when the carriage 520 is located at a turning point (switching point in the moving direction) in the moving direction, the acceleration or deceleration of the carriage 520 becomes large, and a large inertial force is generated in the second cartridge 20 due to acceleration / deceleration. Due to this inertial force, rotational moments MXZ, MXY1 and MXY2 are generated in the second cartridge 20.

Due to the rotational moment MXZ (FIG. 24), the liquid supply needles 640A, 640B, 640C are centered on the insertion positions of the liquid supply needles 640A, 640B, 640C into the liquid supply ports 280A, 280B, 280C, and in the direction DXZ along the XZ plane parallel to the X direction and the Z direction. , The second cartridge 20 swings. The movement of the second cartridge 20 due to the rotational moment MXZ increases as the distance from the liquid supply ports 280A, 280B, and 280C (strictly speaking, the contact portion between the liquid supply needle 640 and the seal portion 287 of the valve mechanism 284) increases. Further, the rotation moment MXY2 (FIG. 25) causes the second cartridge 20 to rotate in the direction DXY2 along the XY plane parallel to the X direction and the Y direction around the vicinity of the central axis CC. Further, the rotation moment MXY1 (FIG. 25) causes the first side surface 204 side of the second cartridge 20 to rotate in the direction DXY1 along the XY plane parallel to the X direction and the Y direction, centering on the vicinity of the central axis CC. The movement of the second cartridge 20 due to the rotational moments MXY1 and MXY2 becomes larger as the distance from the central axis CC increases. The rotational movement and swing of the XZ plane and the XY plane centered on the three central axes CM, CC, and CN can also be regarded as the rotational movement and swing around the first central axis CC. This is because the first central axis CC is located at the center of the three central axes CM, CC, and CN in the X direction.

Similar to the second cartridge 20, the first cartridge 10 may also be affected by the external forces FP1 to FP3 and the rotational moments MXZ, MXY1 and MXY2. However, since the second cartridge 20 is a cartridge that stores a plurality of types of ink, the weight tends to be heavier than that of the first cartridge 10. Therefore, the second cartridge 20 receives a large amount of inertial force generated by the acceleration / deceleration of the carriage 520, and the rotational moments MXZ, MXY1, and MXY2 also become large. That is, the second cartridge 20 may move significantly as the carriage 520 reciprocates. In the second cartridge 20, in order to properly maintain the contact between the device-side terminal group 799 and the contact portion cp, a device different from that of the first cartridge 10 is required.

A-8. Regulation of movement of the second cartridge 20:
A-8-1. With respect to the external force FP2 and the rotational moment MXZ, FIG. 26 is a diagram for explaining a configuration for restricting the movement of the second cartridge 20. FIG. 27 is a diagram for explaining regulation of movement of the second cartridge 20 in the X direction.

As shown in FIG. 26, in the mounted state of the second cartridge 20, the cartridge-side engaging portion 235 (strictly speaking, the upper surface of the cartridge-side engaging portion 235) is on the lower side of the device-side engaging portion 632A. Locked to surface 633. Thereby, for example, the movement of the second cartridge 20 due to the influence of the external force FP2 and the rotational moment MXZ (FIG. 24) can be reduced. Therefore, since the fluctuation of the position of the contact portion cp of the circuit board 400 with respect to the device side terminal group 799 can be reduced, the contact between the contact portion cp of the circuit board 400 and the device side terminal group 799 can be maintained satisfactorily.

The effect of the rotational moment MXZ shown in FIG. 24 on the fluctuation of the position of the contact portion cp is that the contact portion cp is closer to the bottom surface 201 side than the upper surface 202 of the second side surface 203, that is, the liquid supply ports 280A, 280B, 280. It is also suppressed by being placed close to. As described above, the movement of the second cartridge 20 due to the rotational moment MXZ separates from the liquid supply ports 280A, 280B, and 280C (strictly speaking, the contact portion between the liquid supply needle 640 and the seal portion 287 of the valve mechanism 284). It gets bigger. The contact portion cp is provided at a position close to the liquid supply ports 280A, 280B, and 280C. Therefore, even when the second cartridge 20 rotates in the direction DXY2 along the XY plane parallel to the X direction and the Y direction with the central axes CM, CC, and CN as the center, the fluctuation of the position of the contact portion cp can be reduced.

In the present embodiment, as shown in FIG. 23, a part of the plurality of contact portions cp is located in the range WE where the cartridge side engaging portion 235 is located in the X direction. That is, in the X direction, the range WE and the range WA partially overlap. Further, the engagement center CE is provided between the first central surface PC and the second central surface PN. With these configurations, the influence of the rotational moment MXZ on the fluctuation of the position of the contact portion cp can be suppressed. The reason for this will be described below with reference to FIG.

The portion where the second side surface 203, the third side surface 205, and the upper surface 202 intersect is referred to as a corner portion L3. The portion where the second side surface 203, the fourth side surface 206, and the upper surface 202 intersect is referred to as a corner portion R3. Assuming that the second cartridge 20 does not have the engaging member 230, the rotational moment MXZ generated by the acceleration / deceleration of the carriage 520 is substantially the same in the corner portion R3 and the corner portion L3. When the carriage 520 is folded back in the −X direction side, the counterclockwise rotation moment MR3 of the rotation moment MXZ is applied to the corner portion R3 in FIG. 24 (in the first case). Further, when the carriage 520 is folded back in the + X direction side, the clockwise rotation moment ML3 in FIG. 24 of the rotation moment MXZ is applied to the corner portion L3 (in the second case). The magnitude of the rotational moment MR3 and the magnitude of the rotational moment ML3 are almost the same. On the other hand, as described above with reference to FIG. 9, in the mounted state of the first cartridge 10 and the second cartridge 20, the second cartridge is more than the distance D2 between the first cartridge 10 and the second cartridge 20 in the X direction. The distance D1 between 20 and the cartridge holder 60 is larger. Therefore, the space in which the corner portion R3 can be rotated toward the side wall portion 606 on the fourth device side by the rotation moment MR3 is wider than the space in which the corner portion L3 can be rotated toward the side wall portion 605 on the third device side by the rotation moment ML3. Therefore, the corner portion R3 may move more than the corner portion L3. In the present embodiment, as described above, the engagement center CE is provided between the first central surface PC and the second central surface PN. That is, the engagement center CE is located at a position farther from the corner portion R3. Therefore, the movement of the corner portion R3 due to the rotational moment MR3 can be restricted more effectively.

As shown in FIG. 23, by locating a part of the plurality of contact portions cp within the range WE where the cartridge side engaging portion 235 is located in the X direction, the position of the contact portion cp due to the rotational moment MXZ is in the XZ plane. Fluctuations can be reduced. Therefore, good contact between the contact portion cp and the device-side terminal group 799 can be maintained.

As shown in FIG. 26, the second cartridge 20 tries to rotate in the arrow RYZ direction around the liquid supply ports 280A, 280B, and 280C by receiving the external force FP2 in the + Z direction. The rotation in the direction indicated by the arrow RYZ is a rotation along a YZ plane parallel to the Y direction and the Z direction. Further, the rotation in the direction indicated by the arrow RYZ is a rotation in which the lower portion of the second side surface 203 is lifted in the + Z direction and the upper portion of the first side surface 204 is lowered in the −Z direction. When the second cartridge 20 tries to rotate in the direction of the arrow RYZ, the protrusions 262 and 263 come into contact with the bottom wall portion 601 on the device side. As a result, the rotation of the second cartridge 20 in the arrow RYZ direction is restricted. As shown in FIG. 16, two protrusions 262 and 263 include the central axis CC of the central liquid supply port 280B and are provided so as to sandwich the flat PCP perpendicular to the X direction. As a result, the rotation of the second cartridge 20 in the arrow RYZ direction can be regulated more reliably.

As shown in FIG. 16, the three liquid supply ports 280A, 280B, and 280C are arranged on a straight line parallel to the X direction. As a result, even if the second cartridge 20 rotates in the direction of the arrow RYZ shown in FIG. 26, the degree of penetration of the liquid supply needles 640A, 640B, 640C into the three liquid supply ports 280A, 280B, 280C and the position of penetration. However, it can be prevented from changing for each supply port. Therefore, it is possible to maintain a good connection between the liquid supply ports 280A, 280B, 280C and the liquid supply needles 640A, 640B, 640C, and it is possible to maintain a good connection, and liquid leakage and air intrusion into the liquid supply needles 640A, 640B, 640C. Can be reduced.

A-8-2. Regarding the external forces FP1 and FP3, as shown in FIG. 26, among the external forces in the Y direction applied to the second cartridge 20, the external force in the + Y direction is the external force FP1 and the external force FP3, and the external force in the −Y direction is only the external force FP3. Therefore, the second cartridge 20 tends to be more affected by the external force applied in the + Y direction than in the −Y direction, and is likely to move in the + Y direction. In the present embodiment, when the second cartridge 20 is mounted, the regulation convex portion 282 (FIG. 14) located on the + Y direction side of the central liquid supply port 280B comes into contact with the device side regulation wall portion 615. As a result, the movement of the second cartridge 20 in the + Y direction can be restricted. Therefore, good contact between the contact portion cp of the circuit board 400 and the device-side terminal group 799 can be maintained.

The influence of the external force FP1 and the external force FP3 on the fluctuation of the position of the contact portion cp is also suppressed by the intersection of the central contact portion cpc with the first central surface PC, as shown in FIG. By intersecting the central contact portion cpc with the first central surface PC, as shown in FIG. 26, a plurality of contact portions cp can be sandwiched between the central liquid supply port 280B and the device side terminal group 799. As a result, it is possible to reduce the movement of the contact portion cp away from the device side terminal group 799. Therefore, good contact between the contact portion cp of the circuit board 400 and the device-side terminal group 799 can be maintained.

As shown in FIG. 27, in the external force FP3, the movement of the liquid supply ports 280A, 280B, 280C in the X direction, which may be caused by the component in the X direction, is caused by the peripheral members 283A, 283B, 283C and the device-side regulation wall portion 615. It can be regulated by facing the X direction. When the liquid supply ports 280A, 280B, and 280C try to move in the X direction, the peripheral members 283A, 283B, and 283C hit the device-side regulation wall portion 615. As a result, the movement of the second cartridge 20 in the X direction is restricted.

A-8-3. Regarding the rotational moments MXY1 and MXY2, the influence of the rotational moments MXY2 shown in FIG. 25 is that the liquid supply ports 280A, 280B, and 280C are located on the bottom surface 201 closer to the second side surface 203 where the contact portion cp is arranged than the first side surface 204. By being placed in, it is suppressed. As described above, the movement of the second cartridge 20 due to the rotational moment MXY2 becomes larger as the distance from the central axes CM, CC, and CN increases. The contact portion cp is provided at a position close to the central axes CM, CC, and CN of the liquid supply ports 280A, 280B, and 280C. Therefore, even when the second cartridge 20 rotates in the direction DXY2 along the XY plane parallel to the X direction and the Y direction with the central axes CM, CC, and CN as the center, the fluctuation of the position of the contact portion cp can be reduced.

The influence of the rotational moment MXY1 shown in FIG. 25 is due to the device side protrusion 638 (FIGS. 3 and 5) in the recess 264 (FIG. 14) provided at a position closer to the first side surface 204 than the second side surface 203 on the bottom surface 201. Is suppressed by being inserted. That is, by inserting the device-side protrusion 638 into the recess 264, the movement of the second cartridge 20 in the direction DXY1 can be regulated. Further, since the movement of the second cartridge 20 in the direction DXY1 can be regulated, the movement of the direction DXY2 on the second side surface 203 side can also be regulated. Therefore, fluctuations in the position of the contact portion cp can be suppressed, and good contact between the contact portion cp and the device-side terminal group 799 can be maintained.

As shown in FIG. 23, the central contact portion cpc intersects the first central surface PC, not the second central surface PN or the third central surface PL. As a result, the influence of the rotational moment MXY1 shown in FIG. 25 can be reduced. Hereinafter, the relationship between the position of the central contact portion cpc and the influence of the rotational moment MXY1 shown in FIG. 25 will be described in more detail.

FIG. 28 is a schematic view showing the second cartridge 20V of the first reference example. FIG. 29 is a schematic view showing a second cartridge 20W of the second reference example of the reference example. The difference between the second cartridges 20V and 20W of the reference example and the second cartridge 20 of the present embodiment is the arrangement position of the circuit board 400 on the second side surface 203. In the second cartridge 20V shown in FIG. 28, the circuit board 400 is arranged at a position biased toward the + X direction on the second side surface 203, and the central contact portion cpc of the circuit board 400 intersects with the second central surface PN. In the second cartridge 20W (FIG. 29), the circuit board 400 is arranged at a position biased toward the −X direction on the second side surface 203, and the central contact portion cpc of the circuit board 400 intersects with the third central surface PL.

As shown in FIG. 28, when the circuit board 400 is arranged at a position biased toward the third side surface 205 side (+ X direction side), when the carriage 520 accelerates and moves in the + X direction, it is large at the corner portion R1. A rotational moment MXY1t is generated. Due to this rotational moment MXY1t, the second cartridge 20V tends to rotate significantly in the direction indicated by the arrow DXY1t. Then, the vicinity of the circuit board 400 also tries to rotate greatly in the direction indicated by the arrow DXY2t. That is, the fluctuation of the position of the contact portion cp on the circuit board 400 becomes large.

As shown in FIG. 29, when the circuit board 400 is arranged at a position biased toward the fourth side surface 206 side (−X direction side), the portion of the corner portion L1 when the carriage 520 accelerates and moves in the −X direction. A large rotational moment MXY1w is generated in. Due to this rotational moment MXY1w, the second cartridge 20W tends to rotate significantly in the direction indicated by the arrow DXY1w. Then, the vicinity of the circuit board 400 also tries to rotate greatly in the direction indicated by the arrow DXY2w. That is, the fluctuation of the position of the contact portion cp on the circuit board 400 becomes large.

On the other hand, as in the present embodiment shown in FIG. 25, if the circuit board 400 is provided so that the central contact portion cpc intersects the first central surface PC instead of the second central surface PN or the third central surface PL, the first At the corners R1 and R2 of the two cartridges 20, the same rotational moment MXY1 is generated when the carriage 520 accelerates and moves in the + X direction and when the carriage 520 accelerates and moves in the −X direction. This rotational moment MXY1 is smaller than the rotational moment MXY1t shown in FIG. 28 and the rotational moment MXY1w shown in FIG. 29. Therefore, in the second cartridge 20 of the present embodiment, the fluctuation of the position of the contact portion cp when the carriage 520 accelerates and moves in the + X direction can be made smaller than that of the second cartridge 20V. Further, the fluctuation of the position of the contact portion cp when the carriage 520 accelerates and moves in the −X direction can be made smaller than that of the second cartridge 20W. As a result, good contact between the contact portion cp of the circuit board 400 and the device-side terminal group 799 can be maintained.

A-8-4. As shown in FIG. 23 with respect to the rotational moments MXZ and MXY, the plurality of contact portions cp are arranged so as to be symmetrical in the X direction with the first central surface PC as the center. When the second cartridge 20 tries to rotate around the vicinity of the first central axis CC under the influence of the rotational moment MXZ (FIG. 24) and the rotational moment MXY2, it is most likely to rotate in the + Z direction or ± X direction from the first central surface PC. The variation in the position of the contact portion cp at the distant position may be the largest. When the amount of variation in the position of the contact portion cp farthest from the first central surface PC in the + Z direction or ± X direction is set as the maximum fluctuation amount, a plurality of contact portion cps are centered on the first central surface PC. The maximum fluctuation amount when arranged so as to be symmetrical in the X direction is suppressed to be smaller than the maximum fluctuation amount when a plurality of contact portions cp are arranged asymmetrically in the X direction with respect to the first central surface PC. be able to.

A configuration for restricting the movement of the second cartridge 20 by the components of the rotational moments MXZ and MXY and the external force F3 in the X direction will be described with reference to FIGS. 30 to 32. FIG. 30 is a cross-sectional view taken along the line 30-30 of FIG. FIG. 31 is a schematic view of a portion surrounded by a square R30 in FIG. FIG. 32 is a partial sectional view taken along line 32-32 of FIG. 23. 30 and 32 also show cross sections of the cartridge holder 60 and the first cartridge 10 in the mounted state of the second cartridge 20.

As shown in FIG. 30, the guide convex portion 617 is received in the concave portion 258 in the mounted state. As shown in FIG. 14, the recess 258 extends from the bottom surface 201 side toward the top surface 202. By accepting the guiding convex portion 617 in the concave portion 258, the surface 258fa of the concave portion 258 facing the −X direction comes into contact with the guiding convex portion 617 in the mounted state. Thereby, the movement of the second cartridge 20 in the −X direction can be restricted in the mounted state. Therefore, fluctuations in the position of the contact portion cp can be suppressed, and good contact between the contact portion cp and the device-side terminal group 799 can be maintained.

The second cartridge 20 has an uneven portion 257 that fits with the cartridge identification convex portion 616. The uneven portion 257 extends from the bottom surface 201 side of the first side surface 204 toward the top surface 202 side. As a result, it is possible to restrict the movement of the second cartridge 20 along the XY plane orthogonal to the Z direction in the mounted state. In the present embodiment, the convex portion 250 of the concave-convex portion 257 sandwiches the convex portion 616 for cartridge identification in the X direction, so that the movement of the second cartridge 20 in the X direction can be restricted. Therefore, fluctuations in the position of the contact portion cp can be suppressed, and good contact between the contact portion cp and the device-side terminal group 799 can be maintained.

In the mounted state, the partition wall 604R comes into contact with the third side surface 205. As a result, it is possible to restrict the movement of the second cartridge 20 in the + X direction in the mounted state. Therefore, fluctuations in the position of the contact portion cp can be suppressed, and good contact between the contact portion cp and the device-side terminal group 799 can be maintained.

As shown in FIG. 31, the first side portion 246B and the second side portion 246A (FIG. 23) of the first protruding surface portion 246 are located between the first regulation portion 635A and the second regulation portion 635B (FIG. 4). To position. That is, the first protruding surface portion 246 is arranged at a position sandwiched in the X direction by the first regulating portion 635A and the second regulating portion 635B. As a result, it is possible to restrict the movement of the second side surface 203 side of the second cartridge 20 in the X direction in the mounted state, so that fluctuations in the position of the contact portion cp can be suppressed. Therefore, good contact between the contact portion cp and the device-side terminal group 799 can be maintained.

As shown in FIG. 4, the first regulation unit 635A and the second regulation unit 635B are provided in the cartridge mounting unit 602 by utilizing a space facing the first surface portion 242 and the second surface portion 241 in the Y direction. .. In the present embodiment, this space is used to increase the dimensions (thickness) of the first regulation unit 635A and the second regulation unit 635B in the Y direction, thereby increasing the rigidity of the first regulation unit 635A and the second regulation unit 635B. Is increasing. In the present embodiment, since the movement of the first protruding surface portion 246 can be regulated by the first regulating portion 635A and the second regulating portion 635B having high rigidity in this way, it is possible to further suppress the fluctuation of the position of the contact portion cp. It becomes.

As shown in FIG. 23, the first protruding surface portion 246 is provided between the first surface portion 242 and the second surface portion 241 in the X direction, and is within the range W246 where the first protruding surface portion 246 is located in the X direction. The central axis CC of the liquid supply port 280B is located. As a result, in the X direction, from both sides of the first protruding surface portion 246 in the X direction (+ X direction side and −X direction side), the first regulation portion 635A and the second regulation portion 635B (FIG. 4) provide a first balance. The movement of the protruding surface portion 246 can be regulated. Therefore, fluctuations in the position of the contact portion cp can be suppressed, and good contact between the contact portion cp and the device-side terminal group 799 can be maintained. Further, as a result, the dimensions of the first surface portion 242 and the second surface portion 241 in the X direction can be increased to some extent. As a result, the dimensions of the first regulation unit 635A and the second regulation unit 635B in the X direction can be increased to some extent corresponding to the first surface portion 242 and the second surface portion 241. Therefore, the first regulation unit 635A and the second regulation unit 635B Rigidity can be increased. In the present embodiment, since the movement of the first protruding surface portion 246 can be regulated by the first regulating portion 635A and the second regulating portion 635B having such high rigidity, it is possible to further suppress the fluctuation of the position of the contact portion cp. Become.

As shown in FIG. 32, in the mounted state of the second cartridge 20, the first protrusion 249 (FIG. 17) comes into contact with the first regulation wall surface 635fa (FIG. 5) of the first regulation portion 635A, and the second protrusion 248 (FIG. 5). 17) comes into contact with the second regulation wall surface 635fb (FIG. 4) of the second regulation unit 635B. Thereby, the movement of the first protruding surface portion 246 in the X direction can be further restricted. As a result, fluctuations in the position of the contact portion cp can be further suppressed, so that the contact between the contact portion cp and the device-side terminal group 799 can be maintained even better.

As shown in FIG. 17, the first protrusion 249 and the second protrusion 248 are located on the upper surface 202 side of the contact portion cp of the circuit board 400 in the Z direction. That is, the contact positions between the first protrusion 249 and the second protrusion 248 and the first regulation portion 635A and the second regulation portion 635B (FIGS. 4 and 5) are the liquid supply ports 280A, 280B, 280C and the liquid supply needle 640A. , 640B, 640C are provided at a position farther from the contacting portion. As a result, the movement (swing) of the direction DXZ (FIG. 24) of the second cartridge 20 due to the rotational moment MXZ can be reduced.

As shown in FIG. 17, the first protrusion 249 and the second protrusion 248 are located on the bottom surface 201 side of the engaging member 230 in the Z direction. That is, the contact position between the first protrusion 249 and the second protrusion 248 and the first regulation portion 635A and the second regulation portion 635B (FIGS. 4 and 5) is closer to the contact portion cp than the engagement member 230. It is provided. As a result, the movement (swing) of the direction DXZ (FIG. 24) of the second cartridge 20 due to the rotational moment MXZ can be reduced.

A-9. Effects of cartridge set and liquid injection system:
According to the above embodiment, by accommodating a plurality of types of liquids (three types in the present embodiment), the second cartridge 20 is a cartridge rather than separately providing a cartridge for accommodating each type of the plurality of types of liquids. The set 5 and the liquid injection system 90 can be miniaturized. Further, by exchanging the second cartridge 20 containing a plurality of types of liquids, it is possible to reduce the labor and frequency of exchange as compared with the case of exchanging the cartridges accommodating each type of liquid separately. Further, the cartridge set 5 has a direct liquid type first cartridge 10 that does not contain the liquid absorber 299, and a liquid absorber type second cartridge 20 that contains the liquid absorber 299. By using two types of cartridges, it is possible to take advantage of both the liquid absorber type, which has a simple structure and is inexpensive, and the direct liquid type, which has a slightly complicated structure but is suitable for high-speed printing. ..

In the present embodiment, the first cartridge 10 is a direct liquid type cartridge. Therefore, even when the liquid of the first cartridge 10 is supplied to the head 540 at high speed, the inflow of air bubbles is small and the liquid can be smoothly ejected from the head 540. On the other hand, the second cartridge 20 is a liquid absorber type cartridge. Therefore, when the liquid of the second cartridge 20 is to be supplied to the head 540 at high speed, the flow of ink in the liquid absorber 299 cannot keep up with the ink supply speed, and the ink layer in the liquid absorber 299 is separated by air. There is a possibility that it will be done. As a result, the amount of ink remaining in the liquid absorber 299 without being supplied to the head 540 side (residual ink amount) may increase. Further, the flow of ink in the liquid absorber 299 is divided by air, so that air bubbles may flow into the head 540. In the present embodiment, the direct liquid type first cartridge 10 containing black ink is used during high-speed printing and low-speed printing, and the liquid absorber type second cartridge 20 containing color ink is used only during low-speed printing. .. This makes it possible to reduce the amount of residual ink in the second cartridge 20 while enabling high-speed printing using black ink. Further, since the possibility that air bubbles are discharged from the second cartridge 20 to the head 540 can be reduced, the deterioration of print quality can be suppressed.

Further, according to the above embodiment, the cartridge holder 60 includes a first mounting portion 602W and a second mounting portion 602T. That is, since the liquid injection system 90 of the present embodiment is configured on the premise that both types of cartridges 10 and 20 are mounted on the specific mounting portions 602W and 602T, respectively, the structure of the liquid injection device 50 is configured. It can be suppressed from becoming complicated.

Further, according to the above embodiment, the direct liquid type first cartridge 10 contains the ink containing the pigment (pigment ink), and the liquid absorber type second cartridge 20 contains the dye ink. Although the pigment is easily settled, since the first cartridge 10 does not contain the liquid absorber, even if the pigment is settled, it can be easily dispersed by applying vibration to the first cartridge 10. Since the dye ink is used in the liquid absorber type second cartridge 20, the problem of sedimentation unlike the ink containing pigment does not occur. This makes it possible to reduce the possibility that the density of the ink ejected from the liquid injection device 50 varies. Further, by using the black ink contained in the first cartridge 10 as the pigment ink, it is possible to make it less likely to bleed than the dye ink when printing on plain paper. On the other hand, by using the color ink contained in the second cartridge 20 as the dye ink, it is possible to improve the color development property when printing on special paper. That is, according to the present embodiment, black-and-white printing is performed at high speed on plain paper, and color printing is performed at low speed on special paper, so that various printing can be supported.

Further, the first-class injection port portion 544D that ejects the liquid of the first cartridge 10 is the maximum injection that can be ejected per unit time than the second-class injection port portions 544A, 544B, 544C that eject the liquid of the second cartridge 20. The amount is large (Fig. 8). As a result, the ink of the first cartridge 10 can be used at the time of high-speed printing. Further, since the second cartridge 20 is used for low-speed printing, the possibility that the ink flow in the liquid absorber 299 is cut off by air can be reduced.

B. Other embodiments:
The present invention is not limited to the above-mentioned examples and embodiments, and can be implemented in various aspects without departing from the gist thereof. For example, the following modifications are also possible.

B-1. Cartridge with adapter:
FIG. 33 is a diagram for explaining a second cartridge 20a using the adapter 270. The second cartridge 20a has an external tank 2002, a tube 2001, and an adapter 270. Although the external tank 2002 and the tube 2001 are shown one by one in FIG. 33, they are actually provided three by three to supply ink to the second liquid storage chambers 200A, 200B, and 200C.

The adapter 270 is compatible with the second cartridge 20 of the above embodiment, and can be attached to and detached from the second mounting portion 602T of the cartridge holder 60. The adapter 270 differs from the second cartridge 20 in that ink is supplied from the external tank 2002 via the tube 2001. The adapter 270 has three openings on the top surface 202 for connecting the tube 2001 to the second liquid storage chambers 200A, 200B, 200C.

The three external tanks 2002 (only one is shown in FIG. 33) contain one type of each of the three types of liquids (yellow ink, magenta ink, and cyan ink) for supplying to the second liquid storage chambers 200A, 200B, and 200C. To do. The three tubes 2001 (only one is shown in FIG. 33) communicate the corresponding second liquid storage chambers 200A, 200B, 200C with the external tank 2002. When the liquid in the external tank 2002 runs out, it is replaced with a new external tank 2002 or the external tank 2002 is replenished with the liquid. The adapter 270 may contain three kinds of liquids in advance in the second liquid storage chambers 200A, 200B, 200C, or may be stored by supplying the liquid from the external tank 2002.

FIG. 34 is a diagram for explaining a second cartridge 20b using the adapter 270b. The same components as those of the second cartridge 20a (FIG. 33) are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

The second cartridge 20b has an external tank 2002, a tube 2001b, and an adapter 270b. Although the external tank 2002 and the tube 2001b are shown one by one in FIG. 34, they are actually provided with three each to supply ink to the liquid supply needles 640A, 640B, and 640C.

The adapter 270b is compatible with the second cartridge 20 of the above embodiment, and can be attached to and detached from the second mounting portion 602T of the cartridge holder 60. The adapter 270b has, for example, a circuit board 400 and an engaging member 230 in order to ensure compatibility with the second cartridge 20. The adapter 270b does not have second liquid storage chambers 200A, 200B, 200C, an upper surface 202, a third side surface 205, and a fourth side surface 206. The bottom surface 201 of the adapter 270b is formed with three openings so that the three liquid supply needles 640A, 640B, and 640C can be inserted.

The three tubes 2001b (only one is shown in FIG. 34) are directly connected to the liquid supply needles 640A, 640B, 640C. As a result, the liquid (yellow ink, magenta ink, cyan ink) is directly supplied from the external tank 2002 to the liquid supply needles 640A, 640B, 640C via the tube 2001b. When the liquid in the external tank 2002 runs out, it is replaced with a new external tank 2002 or the external tank 2002 is replenished with the liquid. The adapter 270b may adopt another configuration as long as the tube 2001b can be directly connected to the liquid supply needles 640A, 640B, 640C. For example, the adapter 270b may have at least one surface of a top surface 202, a third side surface 205, and a fourth side surface 206. When the adapter 270b has an upper surface 202, the upper surface 202 may be provided with an opening through which the tube 2001b is inserted.

B-2. Other embodiments relating to the outer shape of the second cartridge:
In the above embodiment, the outer shell 21 of the second cartridge 20 has a substantially rectangular parallelepiped shape (FIG. 13), but the shape is not limited to this. That is, the shape of the outer shell (top surface, bottom surface, side surface) of the second cartridge does not have to be a perfect rectangle. It may be a rectangle with rounded corners, a rectangle with irregularities on a part of the sides, an ellipse or an oval shape. Hereinafter, other embodiments relating to the outer shape of the second cartridge will be described.

FIG. 35 is a conceptual diagram of the second cartridge 20c. The second cartridge 20c is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The outer shell 21c of the second cartridge 20c has a rectangular shape with rounded corners when viewed from the fourth side surface 206 side. Further, the second cartridge 20c has an engaging member 230 and a circuit board 400 on the second side surface 203 side. Further, liquid supply ports 280A, 280B, and 280C are provided on the bottom surface 201 side of the second cartridge 20c. When the second cartridge 20c is viewed from the first side surface 204 side, it has a certain width.

FIG. 36 is a conceptual diagram of the second cartridge 20d. The second cartridge 20d is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The outer shell 21d of the second cartridge 20d has a substantially rectangular parallelepiped shape like the outer shell 21 of the second cartridge 20 (FIG. 13). The major difference from the second cartridge 20 is that a part of the second side surface 203 has a recess 213. The recess 213 is formed from the third side surface 205 to the fourth side surface 206. As described above, the second cartridge 20d may have a recess on at least one surface of each surface of the outer shell 21d as long as it is compatible with the second cartridge 20. Further, the second cartridge 20d may have a convex portion on at least one surface of each surface of the outer shell 21d as long as it is compatible with the second cartridge 20.

FIG. 37 is a conceptual diagram of the second cartridge 20e. The second cartridge 20e is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The outer shell 21e of the second cartridge 20e has a substantially rectangular parallelepiped shape like the outer shell 21 of the second cartridge 20 (FIG. 13). The major difference from the second cartridge 20e is that the corner where the upper surface 202 and the second side surface 203 intersect is recessed in the −Z direction and the + Y direction, and the bottom surface 201 is inclined with respect to the horizontal direction. is there. As described above, if the second cartridge 20e is compatible with the second cartridge 20, at least one of each surface of the outer shell 21e may be inclined, or at least a part of each surface may be chipped. It may be dented.

B-3. Second cartridge with a movable part in part:
The outer shell 21 of the second cartridge 20 of the above embodiment was integrally configured, but if it is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T, a part of the outer shell 21 can be attached to the outer shell 21. It may be configured to be movable. Specific other embodiments will be described below.

FIG. 38 is a conceptual diagram of the second cartridge 20f. The second cartridge 20f is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The first protruding surface portion 246 of the second cartridge 20f can move with respect to the outer shell 21f. The first protruding surface portion 246 of the second cartridge 20f is connected to the second side surface 203 by a spring 88. When the second cartridge 20f is mounted on the second mounting portion 602T, the spring 88 is compressed and the first protruding surface portion 246 is moved to the second side surface 203 side, so that the first protruding surface portion 246 is moved to the first regulating portion. It can be arranged between the 635A and the second protrusion 635B (FIG. 4).

FIG. 39 is a conceptual diagram of the second cartridge 20 g. The second cartridge 20g is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The first protruding surface portion 246 of the second cartridge 20 g can move with respect to the outer shell 21 g. In the first protruding surface portion 246 of the second cartridge 20 g, one end portion is supported by a hinge 89 provided on the second side surface 203, and the other end portion can rotate and move around the hinge 89 as a fulcrum. When the second cartridge 20 g is mounted on the second mounting portion 602T, the other end portion is rotationally moved around the hinge 89 as a fulcrum, and the first protruding surface portion 246 is brought into contact with the second side surface 203 to bring the first protruding surface portion 246 into contact with the second side surface 203. The surface portion 246 can be arranged between the first regulation portion 635A and the second regulation portion 635B (FIG. 4).

FIG. 40 is a conceptual diagram of the second cartridge 20h. The second cartridge 20h is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The protruding surface portion 245 of the second cartridge 20h can move with respect to the outer shell 21h. The protruding surface portion 245 of the second cartridge 20 g is connected to the second side surface 203 by a spring 88. When the second cartridge 20 g is mounted on the second mounting portion 602T, the spring 88 is compressed to move the protruding surface portion 245 to the second side surface 203 side. As a result, the first protruding surface portion 246 can be arranged between the first regulating portion 635A and the second regulating portion 635B (FIG. 4), and the cartridge side engaging portion 235 of the engaging member 230 can be attached to the device side engaging portion 632A. It can be locked.

B-4. Two-body cartridge:
In the second cartridge 20 of the above embodiment, the outer shell 21 and the second liquid storage chambers 200A, 200B, and 200C are integrally formed, but the second cartridge 20 is compatible with the second cartridge 20 and has a second mounting portion 602T. If it can be attached to and detached from the above, it may be configured as a two-body type cartridge composed of two elements. The two-body type cartridge will be described below.

FIG. 41 is a conceptual diagram of the two-body type second cartridge 20i. FIG. 42 is a schematic view of the two-body type second cartridge 20i. The second cartridge 20i is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The second cartridge 20i has a case member 277 and a housing member 278. The accommodating member 278 has second liquid accommodating chambers 200A, 200B, 200C inside, and when the liquid in the second liquid accommodating chambers 200A, 200B, 200C runs out, the accommodating member 278 is replaced with a new one or the liquid. To replenish.

The outer shell 21i of the second cartridge 20i is composed of a combination of the outer shell 277i of the case member 277 and the outer shell 278i of the accommodating member 278. The accommodating member 278 includes second liquid accommodating chambers 200A, 200B, 200C, an engaging member 230, and liquid supply ports 280A, 280B, 280C. The outer shell 278i of the accommodating member 278 includes surfaces 201i to 206i corresponding to the surfaces 201 to 206 of the second cartridge 20i. The bottom surface 201i and the top surface 202i face each other in the Z direction, the second side surface 203i and the first side surface 204i face each other in the Y direction, and the third side surface 205i and the fourth side surface 206i face each other in the X direction. ing. The bottom surface 201i is located on the −Z direction side, and the top surface 202i is located on the + Z direction side. The second side surface 203i is located on the −Y direction side, and the first side surface 204i is located on the + Y direction side. The third side surface 205i is located on the + X direction side, and the fourth side surface 206i is located on the −X direction side. An engaging member 230 is provided on the second side surface 203i, and liquid supply ports 280A, 280B, and 280C are provided on the bottom surface 201i.

The outer shell 277i of the case member 277 includes surfaces corresponding to the bottom surface 201, the upper surface 202, the first side surface 204, the second side surface 203, and the third side surface 205 of the second cartridge 20i. The surface of the second cartridge 20i corresponding to the fourth side surface 206 has an opening 206. The first protruding surface portion 246 and the circuit board 400 are provided on the second side surface 203. The bottom surface 201 is formed with an opening 292 that opens in the −X direction and the Z direction. Liquid supply ports 280A, 280B, and 280C are inserted through the opening 292 (FIG. 42). An opening 293 that opens in the −X direction and the Y direction is formed on the second side surface 203. An engaging member 230 is inserted through the opening 293 (FIG. 42).

FIG. 43 is a conceptual diagram of the two-body type second cartridge 20j. FIG. 44 is a schematic view of the two-body type second cartridge 20j. The second cartridge 20j is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The second cartridge 20j has a case member 279 and a housing member 278. Since the accommodating member 278 is the same accommodating member 278 (FIG. 41) as the second cartridge 20i, the description thereof will be omitted.

The outer shell 21j of the second cartridge 20j is composed of a combination of the outer shell 279j of the case member 279 and the outer shell 278i of the accommodating member 278. The case member 279 has surfaces corresponding to the first side surface 204, the bottom surface 201, and the second side surface 203. The surfaces corresponding to the upper surface 202, the third side surface 205, and the fourth side surface 206 are openings. Further, on the second side surface 203, only the −Z direction side portion connected to the bottom surface 201 is formed, and the + Z direction side portion is not formed. The bottom surface 201 is formed with an opening 292j penetrating in the Z direction through which the liquid supply ports 280A, 280B, and 280C are inserted. By moving the accommodating member 278 from the + Z direction side to the −Z direction side of the case member 279, the liquid supply ports 280A, 280B, and 280C are inserted into the opening 292j to form the second cartridge 20j (FIG. 44). ..

B-5. Other embodiments for the engaging member 230:
In the second cartridge 20, the engaging member 230 was a member connected to the second side surface 203 and having elasticity (FIG. 13), but other members as long as they were locked to the device-side engaging portion 632A (FIG. 4). The configuration may be adopted. A specific example will be described below.

FIG. 45 is a diagram for explaining the second cartridge 20k. The difference from the second cartridge 20 is that the second protruding surface portion 247 extends to a portion where the upper surface 202 and the second side surface 203 intersect, and the engaging member 230k is not elastically deformed. The second cartridge 20k is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The engaging member 230k is a solid member that projects in the −Y direction from the second protruding surface portion 247. The engaging member 230k has a cartridge-side engaging portion 235. Instead of the engaging member 230k, a protrusion protruding from the second side surface 203 or the second protruding surface portion 247 in the −Y direction may be provided, and this protrusion may function as the cartridge side engaging portion 235.

FIG. 46 is a diagram for explaining the second cartridge 20l. The difference from the second cartridge 20 is that the second side surface 203l has a recess 233, the configuration of the engaging member 230k, and the spring 234. The second cartridge 20l is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The recess 233 is formed on the upper surface 202 side of the second side surface 203l with respect to the portion where the circuit board 400 is arranged. The recess 233 has a shape recessed in the + Y direction and is open on the −Y direction side. The second cartridge 20l has a spring 234 that connects the surface of the recess 233 on the + Y direction side and the engaging member 230k. The spring 234 allows the engaging member 230k to move in the Y direction. That is, the engaging member 230k can be located inside the recess 233 or outside the recess 233. Since the engaging member 230k is configured to be movable in the Y direction, the cartridge-side engaging portion 235 can be easily locked to and released from the device-side engaging portion 632A (FIG. 5). Can be done. The engaging member 230k of the second cartridge 20l has the same configuration as the engaging member 230k of the second cartridge 20k.

FIG. 47 is a diagram for explaining the second cartridge 20 m. The difference from the second cartridge 20k (FIG. 45) is that the engaging member 230k can be separated from the outer shell 21. The second cartridge 20m is compatible with the second cartridge 20 and can be attached to and detached from the second mounting portion 602T. The configuration of the engaging member 230k of the second cartridge 20m is the same as that of the engaging member 230k of the second cartridge 20k. For example, after the outer shell 21 is mounted on the second mounting portion 602T, the engaging member 230k is secondly mounted so that the cartridge-side engaging portion 235 of the engaging member 230k is locked to the device-side engaging portion 632A. It may be inserted into the portion 602T. The engaging member 230k and the second protruding surface portion 247 may each have rails extending in the Z direction to be fitted to each other. With this rail, the engaging member 230k can be easily guided to the locking position in the second mounting portion 602T.

B-6. Other embodiments of the cartridge side terminal group:
48 to 50 are views showing other embodiments of the terminal shape of the circuit board. These circuit boards 400a to 400c differ only in the surface shape of the cartridge side terminals 431 to 439 from the circuit board 400 shown in FIG. 21. In the circuit boards 400a and 400b of FIGS. 48 and 49, the shapes of the individual terminals are not substantially rectangular and have irregular shapes. In the circuit board 400c of FIG. 50, nine cartridge-side terminals 431 to 439 are arranged in a row, and mounting detection terminals 435 and 439 are arranged at both ends thereof. Further, the mounting detection terminals 431 and 434 are arranged between the mounting detection terminal 435 and the power supply terminal 436, and between the mounting detection terminal 439 and the data terminal 438, respectively. Also in these circuit boards 400a to 400c, the arrangement of the contact portion cp with the device side terminal corresponding to each cartridge side terminal 431 to 439 is the same as that of the circuit board 400 in FIG. As described above, the surface shape of each cartridge side terminal can be variously deformed as long as the arrangement of the contact portion cp is the same.

FIG. 51 is a diagram showing another embodiment of the terminal shape of the circuit board. In the circuit board 400d shown in FIG. 51, the contact portion cp of the cartridge side terminals 436, 437, 438 is provided on the surface 400fc orthogonal to the surface 400fa. The surface 400fc is a surface facing the −Z direction. As described above, as long as the arrangement of the contact portion cp is the same, a part of the plurality of contact portion cp may not be provided on the surface 400fa.

B-7. Other embodiments of the cartridge:
In the above embodiment, in the first cartridge 10 mounted on the first mounting portion 602W and the second cartridge 20 mounted on the second mounting portion 602T, a contact portion group composed of a plurality of contact portions cp of the circuit board 30. And the contact portion group including the plurality of contact portions cp of the circuit board 400 may be provided at different positions in the Z direction. The position different in the Z direction means that if the contact portion group of the circuit board 30 and the contact portion group of the circuit board 400 are arranged so as to be offset in the Z direction, the range of the contact portion group in the Z direction is partially located. It may overlap in the Z direction. By doing so, when the first cartridge 10 is erroneously mounted on the second mounting portion 602T, it is possible to prevent electrical conduction with the contact mechanism 70A of the second mounting portion 602T. Therefore, the possibility that the storage device and the circuit of the circuit board 30 are damaged can be reduced.

In the above embodiment, the cartridges in which the plurality of liquid storage chambers 200A to 200C are partitioned by the partition walls 22 and 23 are used as the second cartridge 20, but a plurality of cartridges having one liquid storage chamber are joined together. The integrated cartridge may be used as the second cartridge.

In the above embodiment, the first cartridge 10 did not have the liquid absorber 299, but may have one. Further, the second cartridge 20 had the liquid absorber 299, but may not have it. Further, although the first cartridge 10 contained the pigment ink, it may contain the dye ink. Further, although the second cartridge 20 contained the dye ink, it may contain the pigment ink.

The present invention is not limited to inkjet printers and cartridges used in printers, but can also be applied to any liquid injection device that injects a liquid other than ink and a cartridge used in the liquid injection device. .. For example, it can be applied to the following various liquid injection devices and their cartridges.
(1) Image recording device such as facsimile device (2) Color material injection device used for manufacturing color filter for image display device such as liquid crystal display (3) Organic EL (Electro Luminescence) display and surface emission display (Field) Electrode material injection device used for electrode formation such as Emission Display, FED) (4) Liquid injection device for injecting liquid containing bioorganic substances used for biochip production (5) Sample injection device as a precision pipette (6) Lubrication Oil injection device (7) Resin liquid injection device (8) Liquid injection device that injects lubricating oil pinpointly into precision machines such as watches and cameras (9) Micro hemispherical lenses (optical lenses) used for optical communication elements, etc. ) Etc., a liquid injection device that injects a transparent resin liquid such as an ultraviolet curable resin liquid onto a substrate (10) A liquid injection device that injects an acidic or alkaline etching solution to etch a substrate or the like (11) A liquid injection device including a liquid injection head that ejects any other minute amount of droplets.

The term "droplet" refers to the state of the liquid discharged from the liquid injection device, and includes those having a granular, tear-like, or thread-like tail. Further, the term "liquid" as used herein may be any material that can be injected by the liquid injection device. For example, the "liquid" may be a material in a liquid state when the substance is in a liquid phase, a material in a liquid state having high or low viscosity, and a sol, gel water, other inorganic solvent, an organic solvent, a solution, etc. Liquid materials such as liquid resins and liquid metals (metal melts) are also included in "liquid". Further, not only a liquid as a state of a substance but also a liquid in which particles of a functional material made of a solid substance such as a pigment or a metal particle are dissolved, dispersed or mixed in a solvent are included in the "liquid". Further, typical examples of the liquid include ink, liquid crystal, and the like as described in the above-described embodiment. Here, the ink includes general water-based inks, oil-based inks, and various liquid compositions such as gel inks and hot melt inks.

The present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations within a range not deviating from the gist thereof. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each embodiment described in the column of the outline of the invention may be used to solve some or all of the above-mentioned problems. , It is possible to replace or combine as appropriate in order to achieve a part or all of the above-mentioned effects. Further, if the technical feature is not described as essential in the present specification, it can be appropriately deleted.

5 ... Cartridge set, 10 ... 1st cartridge, 12 ... Outer shell, 13 ... Top surface, 14 ... Bottom surface, 15 ... Back surface, 16 ... Front surface, 17 ... Left side surface, 18 ... Right side surface, 19 ... Air inlet, 20, 20a to 20m, 20V, 20W ... 2nd cartridge 21,21c, 21d, 21e, 21f, 21g, 21h, 21i, 21j ... outer shell, 22, 23 ... partition wall, 30 ... circuit board, 31 ... cartridge side terminal , 50 ... Liquid injection device, 60 ... Cartridge holder, 70, 70A, 70B ... Contact mechanism, 71-79 ... Terminals, 89 ... Hinge, 90 ... Liquid injection system, 100 ... First liquid storage chamber, 120 ... Engagement member , 122 ... Cartridge side engaging part, 142 ... Communication hole, 150 ... Valve mechanism, 153 ... Valve body, 155 ... Biasing member, 180 ... Liquid supply port, 183 ... Film, 188 ... Opening, 200, 200A, 200B, 200C ... Second liquid storage chamber, 201,201i ... Bottom surface, 202,202i ... Top surface, 203,203i ... Second side surface, 204,204i ... First side surface, 205,205i ... Third side surface, 206,206i ... Fourth Side surface, 213, 221, 222 ... recess, 230, 230 k ... engaging member, 231 ... first end, 232 ... second end, 233 ... recess, 235 ... cartridge side engaging, 241 ... second surface, 242 ... 1st surface portion, 245 ... Protruding surface portion, 246 ... 1st protruding surface portion, 246A ... 2nd side portion, 246B ... 1st side portion, 247 ... 2nd protruding surface portion, 248 ... 2nd projection, 249 ... 1st projection , 250 ... Convex part, 252 ... Concave part, 257 ... Concavo-convex part, 258 ... Concave part, 258fa, 258fb ... Surface, 262 ... First protrusion, 263 ... Second protrusion, 264 ... Member, 277i ... outer shell, 278 ... accommodating member, 278i ... outer shell, 279 ... case member, 279j ... outer shell, 280 ... liquid supply port, 280A ... liquid supply port, 280B ... liquid supply port (central liquid supply port) , 280C ... Liquid supply port, 282 ... Regulatory convex part, 283A, 283B, 283C ... Peripheral member, 284 ... Valve mechanism, 285 ... Bending member, 286 ... Valve body, 287 ... Seal part, 288 ... Opening, 289 ... Liquid Supply unit, 292,292j ... Opening, 293 ... Opening, 299 ... Liquid absorber, 400, 400a-400d ... Circuit board, 400fa ... Front surface, 400fb ... Back surface, 401 ... Boss groove, 402 ... Boss hole, 405 ... Board edge, 431-439 ... Cartridge side terminal, 439P ... Second outer part, 499 ... Cartridge Side terminal group, 510 ... Control unit, 515 ... Print medium, 517 ... Flexible cable, 520 ... Carriage, 522 ... Carriage motor, 524 ... Drive belt, 532 ... Conveyor motor, 534 ... Platen, 540 ... Head, 542 ... Bottom surface, 544A, 544B, 544C ... Type 2 injection port, 544D ... Type 1 injection port, 546,546A, 546B, 546C, 546D ... Injection port, 601 ... Device side bottom wall, 602 ... Cartridge mounting part, 602T ... 2nd mounting part, 602W ... 1st mounting part, 603 ... 1st device side side wall, 604 ... 2nd device side side wall, 604R ... partition wall, 605 ... 3rd device side side wall, 606 ... 4th device Side side wall, 611 ... region, 615 ... device side regulation wall, 616 ... cartridge identification convex, 617 ... guide convex, 632, 632A, 632D ... device side engagement, 633 ... surface, 635 ... regulation Department, 635A ... 1st regulation part, 635B ... 2nd regulation part, 635C ... 3rd regulation part, 635fa ... 1st regulation wall surface, 635fb ... 2nd regulation wall surface, 635fc ... 3rd regulation wall surface, 635fd ... 4th regulation wall surface , 638 ... device side protrusions, 640, 640A to 640D ... liquid supply needle, 642 ... tip, 645 ... base end, 701, 702 ... slit, 703, 704 ... contact forming member, 705 ... holding member, 710 to 790. ... device side terminal, 790A ... relay board, 792 ... end, 793 ... end, 799 ... device side terminal group, 2001 ... tube, 2001b ... tube, 2002 ... external tank, CX ... central axis, CC ... central axis ( 1st central axis), CE ... engaging center, CM ... central axis (3rd central axis), CN ... central axis (2nd central axis), CT ... central axis, FLA to FLD ... flow path, FM ... film, FP1 to FP3 ... External force, L1 ... Corner, L2 ... Corner, L3 ... Corner, ML3 ... Rotation moment, MR3 ... Rotation moment, MXY1 ... Rotation moment, MXY1t ... Rotation moment, MXY1w ... Rotation moment, MXY2 ... Rotation moment , MXZ ... Rotational moment, PC ... 1st central plane, PCP ... Flat surface, PL ... 3rd central plane, PN ... 2nd central plane, R1 ... Corner, R2 ... Square, R3 ... Square, R30 ... Square, RN1 ... 1st terminal row, RN2 ... 2nd terminal row, W241 ... Range, W242 ... Range, W246 ... Range, WA ... Range, WE ... Range, XCP ... Center, cp ... Contact part, cpc ... Central contact part

Claims (11)

When the three directions orthogonal to each other are the Z direction, the X direction, and the Y direction, a carriage that reciprocates along the X direction and a plurality of liquid supply needles provided side by side in the X direction in the carriage. A cartridge that is mounted side by side with another cartridge having one liquid supply port on the carriage of a liquid injection device having a device-side terminal provided on the carriage.
The bottom surface and the top surface facing each other in the Z direction,
The first side surface and the second side surface facing each other in the Y direction,
Three or more odd-numbered liquid supply ports arranged side by side in the X direction at positions closer to the second side surface than the first side surface on the bottom surface, each of which is a center along the Z direction. The three or more odd-numbered liquid supply ports having shafts and
A plurality of contact portions arranged side by side in the X direction are provided on the second side surface at a position closer to the bottom surface than the upper surface.
In the mounted state where the cartridge is mounted on the carriage,
The liquid supply port receives the liquid supply needle and receives
The contact portion comes into contact with the device side terminal and
The second side surface has a first surface portion, a second surface portion, and a protruding surface portion that protrudes toward the carriage side from the first surface portion and the second surface portion in the Y direction.
The first surface portion is located on the −X direction side, which is one direction in the X direction.
The second surface portion is located on the + X direction side, which is the other direction of the X direction.
In the X direction, the protruding surface portion is provided between the first surface portion and the second surface portion.
The protruding surface portion includes the central axis of the central liquid supply port among the three or more odd number liquid supply ports, and intersects a predetermined YZ plane orthogonal to the X direction.
An arrangement portion for arranging the plurality of contact portions is provided on the protruding surface portion.
In the mounted state, the first side portion of the protruding surface portion on the −X direction side and the second side portion on the + X direction side are located between the two regulation portions provided on the carriage.
When the cartridge is viewed in the Y direction from the second side surface side toward the first side surface side,
In the X direction, the central axis of the central liquid supply port is located within the range where the protruding surface portion is located.
In the X direction, the central axis of the liquid supply port on the −X direction side with respect to the central liquid supply port is located within the range where the first surface portion is located.
A cartridge in which the central axis of the liquid supply port on the + X direction side of the central liquid supply port is located within the range in which the second surface portion is located in the X direction. The cartridge according to claim 1.
It has an engaging member provided on the second side surface at a position on the upper surface side of the plurality of contact portions.
In the mounted state, the cartridge-side engaging portion that is a part of the engaging member is locked to the lower surface of the device-side engaging portion provided on the carriage. The cartridge according to claim 2, further
The first side portion is provided with a first protrusion protruding in the −X direction.
The second side portion is provided with a second protrusion protruding in the + X direction.
The first protrusion and the second protrusion are located on the upper surface side of the contact portion in the Z direction and on the bottom surface side of the engaging member.
In the mounted state, the first projection abuts on one of the two regulating portions, and the second projection abuts on the other regulating portion of the two regulating portions. The cartridge according to claim 2 or 3.
The engaging member is a cartridge provided on the protruding surface portion. The cartridge according to claim 1, further
The first side portion is provided with a first protrusion protruding in the −X direction.
The second side portion is provided with a second protrusion protruding in the + X direction.
The first protrusion and the second protrusion are located on the upper surface side of the contact portion in the Z direction.
In the mounted state, the first projection abuts on one of the two regulating portions, and the second projection abuts on the other regulating portion of the two regulating portions. The cartridge according to any one of claims 1 to 5.
A cartridge in which at least one of a concave portion and a convex portion, which are arranged at intervals from the protruding surface portion, is provided on the first surface portion and the second surface portion. The cartridge according to any one of claims 1 to 6, and further
A protrusion is provided on the bottom surface,
The protrusion is provided at a position closer to the first side surface than the second side surface on the bottom surface.
A cartridge in which two protrusions are provided so as to include a central axis of the central liquid supply port and sandwich a surface perpendicular to the X direction. The cartridge according to any one of claims 1 to 7.
A cartridge in which the central contact portion provided at the center of the plurality of contact portions in the X direction includes the central axis of the central liquid supply port and intersects the plane perpendicular to the X direction. The cartridge according to claim 8.
A cartridge in which the plurality of contact portions include a central axis of the central liquid supply port and are arranged so as to be symmetrical in the X direction with respect to a plane perpendicular to the X direction. The cartridge according to any one of claims 1 to 9.
The cartridge in which the three or more odd number liquid supply ports are arranged in a straight line parallel to the X direction. The cartridge according to any one of claims 1 to 10, further comprising.
A cartridge provided on the bottom surface at a position closer to the first side surface than the second side surface, and having a recess for receiving a device-side protrusion provided on the carriage.

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