JP6056723B2 - Cartridge and cap - Google Patents

Description

  The present invention relates to a cartridge technology.

  2. Description of the Related Art Conventionally, as a technique for supplying ink to a printer that is an example of a liquid ejecting apparatus, a technique that uses an ink cartridge (also simply referred to as “cartridge”) that stores ink is known. The cartridge includes a liquid storage unit for storing ink, and a liquid supply unit for supplying ink in the liquid storage unit to the printer. The liquid supply part forms a liquid supply port having one end communicating with the liquid storage part and the other end being an opening (for example, Patent Documents 1 and 2).

US Pat. No. 7,735,983 Japanese Patent No. 7938523

  The cartridge described in the patent document may receive an impact during transportation, for example, and the ink in the liquid container may leak out of the cartridge before use. Various problems occur when ink leaks outside the cartridge. For example, there is a possibility that the amount of ink that can be used by the user is reduced. In addition, there is a possibility that ink adheres to a user, a printer, a print medium, or the like.

  In addition, the cartridge before being attached to the printer may have a cap attached to the liquid supply port in order to prevent ink from leaking from the liquid supply port. When the cap is attached to the cartridge, various problems may occur. For example, when the ink adheres to the cap and the user removes the cap from the cartridge, the ink of the cap may adhere to the user. In addition, for example, the ink may leak out from the liquid supply port due to the cap not being properly attached to the cartridge.

  As described above, the above-described demands on cartridges and caps are not limited to cartridges that contain ink and caps that are attached to cartridges that contain ink, and other printing materials, cartridges that contain printing materials other than liquid, and the like There is also a common cap attached to the cartridge. In addition, such cartridges or caps are desired to be reduced in size, cost, resource saving, manufacturing ease, usability, and the like.

SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.
(1) According to one aspect of the present invention, a cartridge having an opening for supplying a liquid to the liquid ejecting apparatus is provided. The cartridge includes an atmosphere introduction port for introducing air into the cartridge, a liquid outflow portion provided in the opening, and a communication port provided in the opening and communicating with the atmosphere introduction port. A cap for closing the opening, wherein the cap is a stepped portion having a concave receiving portion for receiving the liquid outflow portion and a step raised from the bottom of the receiving portion , A step portion for inhibiting the inflow of the liquid from the bottom portion to the communication port. According to this form, the inflow of the liquid from a bottom part to a communicating port can be inhibited by a level difference part.
(2) According to another aspect of the invention, there is provided a cap for closing an opening of a cartridge for supplying a liquid to the liquid ejecting apparatus. The cartridge has an air introduction port for introducing air into the cartridge, a liquid outflow portion provided in the opening, a communication port provided in the opening and communicating with the air introduction port , Is provided. Cap in a state that closes the opening, and concave receiving portion for receiving the liquid outlet portion, wherein a step portion having a step which is raised relative to the bottom portion of the receiving portion, in a state that closes the opening A step portion for inhibiting the inflow of the liquid from the bottom portion to the communication port. According to this form, the inflow of the liquid from a bottom part to a communicating port can be inhibited by a level difference part.

(1) According to one aspect of the present invention, a cartridge for storing a liquid to be supplied to a liquid ejecting apparatus is provided. The cartridge includes a liquid storage unit and a liquid supply unit connected to the liquid ejecting apparatus. Inside the liquid supply part, a liquid outflow part for allowing the liquid ejecting apparatus to flow out the liquid, and an opening connecting the outside of the liquid supply part and the inside of the liquid supply part are provided. The opening is not in contact with the side surface of the liquid supply unit. According to the cartridge of this aspect, since the opening is not in contact with the side surface of the liquid supply unit, the possibility that the liquid flowing on the side surface reaches the opening can be reduced even when the liquid flows along the side surface. Thereby, the possibility that liquid leaks to the outside through the opening can be reduced.

(2) In the cartridge of the above aspect, the opening may be one end of a passage projecting in the liquid supply unit. According to the cartridge of this aspect, since the opening is one end of the protruding passage, the possibility that the liquid reaches the opening can be reduced even when the liquid flows along the inner surface in the liquid supply unit. Thereby, the possibility that liquid leaks to the outside through the opening can be reduced.

(3) In the cartridge according to the aspect described above, the opening may be located on the downstream side of the liquid outflow direction with respect to the liquid outflow direction from the peripheral edge of the liquid outflow portion that is closest to the passage. According to the cartridge of this form, the possibility that the liquid reaches the opening can be further reduced. For example, in the state of the cartridge in which the downstream side is above the upstream side, the opening is located above the peripheral edge portion (also referred to as “first peripheral edge portion”) at the closest position. Therefore, the possibility that the liquid leaking from the first peripheral edge or the vicinity of the first peripheral edge reaches the opening can be reduced.

(4) In the cartridge of the above aspect, the liquid supply part and the passage may be integrally formed. According to the cartridge of this aspect, it is possible to reduce the possibility that a gap is generated between the liquid supply unit and the passage due to breakage or the like, compared to the case where the liquid supply unit and the passage are formed by separate members. Thereby, the possibility that the liquid flows into the passage through the gap can be reduced.

(5) In the cartridge of the above aspect, the first surface, the second surface, the third surface, the fourth surface, and the first member disposed on the first surface, and having a transmission part, A first member used for detecting the remaining amount of the liquid in the liquid storage unit or detecting the presence or absence of the liquid, the first surface is provided with the liquid supply unit, and the fourth surface is The first surface is opposed to the first surface, the second surface is formed between the first surface and the fourth surface, the third surface is opposed to the second surface, and the first surface is A first end located on the second surface side, and a second end located on the third surface side, wherein the transmission portion is more than the second end portion of the first surface. The liquid supply unit may be disposed closer to the second end than the first end of the first surface. The liquid supply unit may be disposed closer to the first end. According to the cartridge of this aspect, the liquid supply unit is located on the second end side, and the transmission unit is located on the first end side. That is, the liquid supply unit and the transmission unit are located at a distance. Therefore, the possibility that the liquid flowing out from the liquid supply unit adheres to the transmission unit can be reduced. Thereby, for example, in the case where the remaining liquid state (the presence or absence of the remaining liquid amount or the remaining liquid amount) is detected by optical means using the first member, it is possible to suppress a decrease in the detection accuracy of the remaining liquid state.

(6) In the cartridge according to the above aspect, the opening may be located downstream of the liquid outflow portion in the liquid outflow direction. According to the cartridge of this form, the possibility that the liquid reaches the opening can be further reduced. For example, in the state of the cartridge in which the downstream side is above the upstream side in the vertical direction, the opening is positioned above the liquid outflow portion. Therefore, the possibility that the liquid leaking from the liquid outflow portion reaches the opening can be reduced.

(7) In the cartridge according to the above aspect, the opening may be positioned upstream of the liquid outflow portion in the liquid outflow direction. According to the cartridge of this form, it is possible to reduce the possibility that the opening hits a member located in the vicinity of the liquid outflow portion. For example, a liquid ejecting apparatus corresponds to the other member.

(8) The cartridge according to the above aspect further includes a cap for closing the liquid supply unit, the cap having a lever, wherein the opening and the lever are located on the same side with respect to the liquid outflow portion. Also good. According to the cartridge of this aspect, if the cartridge is placed on a predetermined surface in a state where the lever is on the lower side in the vertical direction, the posture of the cartridge is not stable. Therefore, it is possible to prevent the cartridge from being placed on the predetermined surface in a state where the lever is on the lower side. Here, the opening and the lever are located on the same side with respect to the liquid outflow portion. In other words, the lever can reduce the possibility of the opening being lower than the liquid outflow portion, and can reduce the possibility that the liquid leaking from the liquid outflow portion reaches the opening.

(9) In the cartridge of the above aspect, the cap may have a sealing portion that closes at least a part of the opening. According to the cartridge of this form, the possibility that the liquid flows out to the outside through the opening can be reduced by blocking at least a part of the opening by the sealing portion.

(10) In the cartridge of the above aspect, a plurality of the liquid supply portions are provided, a plurality of the openings are provided, and a plurality of the sealing portions provided in the cap are provided corresponding to the plurality of the openings, The cap may have a first step portion between the sealing portions. According to the cartridge of this embodiment, even when the liquid reaches one sealing portion, the liquid that reaches one sealing portion by the stepped portion can be prevented from reaching the other sealing portion.

(11) In the cartridge according to the above aspect, the cap is a receiving portion that receives the liquid outflow portion, a receiving portion provided at a position different from the sealing portion, the sealing portion, and the receiving portion. And a second step portion provided with at least one of a convex portion and a concave portion. According to the cartridge of this aspect, even when the liquid leaked from the liquid outflow part adheres to the receiving part, the possibility that the liquid reaches the sealing part through the receiving part can be reduced by the second step part.

(12) In the cartridge according to the above aspect, the receiving portion may have a concave shape, and the second stepped portion may be formed by a peripheral portion of the receiving portion. According to the cartridge of this form, it is not necessary to provide a new separate member in order to provide the second step portion.

(13) In the cartridge according to the above aspect, the liquid outflow portion includes an inclined portion inclined with respect to the liquid outflow direction, and the cap includes an opposed portion inclined along the direction in which the inclined portion is inclined. You may have. According to the cartridge of this aspect, since the opposing portion is inclined along the direction in which the inclined portion of the liquid outflow portion is inclined, the volume of the internal chamber that is formed by the cap and the liquid supply portion and accommodates air can be reduced. . Thereby, the quantity of the air which flows in into a liquid storage part via a liquid outflow part from an internal chamber can be restrict | limited.

(14) In the cartridge of the above aspect, the liquid outflow portion includes an attachment portion attached to the liquid supply portion, a central portion surrounded by the attachment portion, and a non-attachment portion different from the central portion and the attachment portion. And the non-attaching part may be capable of holding the liquid. According to the cartridge of this form, since the liquid can be held by the non-attachment portion, the possibility that the liquid reaches the opening can be reduced.

(15) In the cartridge of the above aspect, the cap may contact at least a part of the central portion. According to the cartridge of this form, the volume of the internal chamber formed by the cap and the liquid supply unit and containing air can be reduced. Thereby, the quantity of the air which flows in into a liquid accommodating part via a liquid outflow part from an internal chamber can further be restrict | limited.

(16) In the cartridge of the above aspect, the cap does not have to be in contact with the central portion. According to the cartridge of this form, the possibility of liquid adhering to the cap can be reduced.

(17) The cartridge according to the above aspect further includes a removable member, an opening sealing member for closing the opening, and the opening sealing when projected onto a plane perpendicular to the outflow direction of the liquid. The member may be provided at a position that does not overlap the liquid outflow portion. According to the cartridge of this aspect, since the opening sealing member does not overlap the liquid outflow portion, the possibility that the liquid leaking from the liquid outflow portion adheres to the opening sealing member can be reduced.

(18) In the cartridge according to the above aspect, the cartridge includes a liquid supply port sealing member that is a detachable member and blocks a liquid supply port located at one end of the liquid supply unit, and the opening sealing member and the liquid supply The mouth sealing member may be bonded to each other in part. According to the cartridge of this embodiment, the user can remove the opening sealing member and the liquid supply port sealing member from the cartridge with a single operation.

(19) According to another aspect of the present invention, there is provided a cap that covers a liquid supply port located at one end of a liquid supply portion having an opening connected to the liquid outflow portion and the outside. At least a part of the surface facing the liquid outflow portion seals the opening. According to the cap of this form, the possibility that the liquid flows out to the outside through the opening of the liquid supply unit can be reduced.

(20) In the cap of the above aspect, the liquid supply port may not be in contact with the liquid supply port. According to the cap of this form, the possibility of liquid adhering to the cap can be reduced.

(21) In the cap of the above aspect, the liquid supply port may be contacted with the liquid supply port. According to the cap of this form, it is possible to suppress the liquid from leaking out from the liquid outflow portion.

(22) In the cap of the above aspect, the opening is one end of a passage projecting in the liquid supply section, and the cap does not have to contact the passage in a state of covering the liquid supply port. According to the cap of this form, the passage can be prevented from being blocked by the cap.

(23) In the cap of the above aspect, the cap may be one end of a passage projecting in the liquid supply unit, and the cap may contact the passage in a state of covering the liquid supply port. According to the cap of this form, it is possible to reduce the possibility that the liquid enters the passage and the intruded liquid leaks to the outside.

(24) According to another aspect of the present invention, the liquid supply part protrudes outward from the member constituting the cartridge and has a liquid supply port at one end, and is located inside and protrudes from the liquid supply part There is provided a cap that covers the liquid supply port of the liquid supply portion having a liquid outflow portion at least partially inclined with respect to the liquid supply portion. At least a part of the surface facing the liquid outflow portion is inclined corresponding to the inclination. According to the cap of this form, for example, it is possible to reduce the possibility that the liquid leaks to the outside of the cap due to the inclination.

  The present invention can be realized in various forms, for example, a cartridge, a cap mounted on the cartridge, a cartridge manufacturing method, a cap manufacturing method, and a liquid ejecting system including the cartridge and the liquid ejecting apparatus. In addition, the present invention can be realized in a mode such as a liquid supply system including a cartridge and a flow pipe that allows liquid to flow through the liquid ejecting apparatus.

1 is a perspective view illustrating a configuration of a liquid ejecting system 10. FIG. It is a perspective view which shows the holder 60 with which the cartridge 20 was mounted | worn. 3 is a first external perspective view of a cartridge 20. FIG. FIG. 10 is a second external perspective view of the cartridge 20. 3 is a front view of the cartridge 20. FIG. 4 is a rear view of the cartridge 20. FIG. 3 is a left side view of the cartridge 20. FIG. 4 is a right side view of the cartridge 20. FIG. 3 is a plan view of the cartridge 20. FIG. 4 is a bottom view of the cartridge 20. FIG. FIG. 4 is an exploded perspective view of the cartridge 20. 3 is a front view of a main body member 22. FIG. FIG. 6 is a first diagram for explaining the operation of the cartridge 20. FIG. 9 is a second diagram for explaining the operation of the cartridge 20. FIG. 10 is a third diagram for explaining the operation of the cartridge 20. It is a fragmentary sectional view of F9-F9 cross section of FIG. 6 is a bottom view of the vicinity of a liquid supply unit 280. FIG. 4 is a diagram for further explaining the configuration of a liquid supply unit 280. FIG. It is a perspective view of the cartridge 13 of 2nd Embodiment. 3 is a first perspective view of a cap 70. FIG. 3 is a second perspective view of a cap 70. FIG. 4 is a partial cross-sectional view of the cartridge 13. FIG. It is a perspective view of the cartridge main body 20a of 3rd Embodiment. It is a perspective view of the cartridge 13a of 3rd Embodiment. It is a 1st perspective view of cap 70a. It is a 2nd perspective view of the cap 70a. It is a 1st perspective view of cap 70b of a 4th embodiment. It is a 2nd perspective view of cap 70b of a 4th embodiment. FIG. 4 is a cross-sectional view of the cartridge body 20 with a cap 70b attached. It is the figure which expanded a part of FIG. 26D. It is a 1st perspective view of cap 70c as a modification. It is the 2nd perspective view of cap 70c as a modification. It is the figure which expanded the liquid supply part 280 vicinity of 5th Embodiment. It is a figure for demonstrating the reproduction | regeneration cartridge 20c. It is a perspective view of the reproduced cap 70g. It is a schematic diagram for demonstrating 1st other embodiment. It is a schematic diagram for demonstrating 2nd other embodiment. It is a figure for demonstrating 3rd other embodiment. It is a figure for demonstrating the modification of the member 30g for supply. FIG. 17 is a diagram corresponding to FIG. 16.

Next, embodiments of the present invention will be described in the following order.
A-H. Various embodiments:
I. Variations:

A. First embodiment:
A-1: Configuration of liquid ejection system:
FIG. 1 is a perspective view showing a configuration of the liquid ejecting system 10. In FIG. 1, XYZ axes orthogonal to each other are drawn. The XYZ axes in FIG. 1 also correspond to the XYZ axes in other figures. The XYZ axes are attached to the drawings shown thereafter as necessary. The liquid ejecting system 10 includes a cartridge 20 and a printer 50 as a liquid ejecting apparatus. In the liquid ejecting system 10, the cartridge 20 is detachably mounted on the holder 60 of the printer 50 by the user.

  The cartridge 20 contains ink therein. The ink stored in the cartridge 20 is supplied to the head 54 via a liquid supply unit and a liquid supply pipe which will be described later. In the present embodiment, a plurality of cartridges 20 are detachably mounted on the holder 60 of the printer 50. In the present embodiment, six types of cartridges 20 are attached to the holder 60 in correspondence with six colors (black, yellow, magenta, light magenta, cyan, and light cyan) of ink, that is, six cartridges 20 in total. . Note that the number of cartridges 20 attached to the holder 60 is not limited to six.

  The printer 50 is a small inkjet printer for individuals. In addition to the holder 60, the printer 50 includes a control unit 51 and a carriage 52 having the holder 60. The carriage 52 includes a head 54. The printer 50 circulates ink from the cartridge 20 attached to the holder 60 to the head 54 via a liquid supply pipe described later. The head 54 includes a discharge mechanism such as a piezoelectric element, and discharges (supplies) ink to a print medium 90 such as paper or a label. As a result, data such as characters, graphics, and images are printed on the print medium 90.

  The control unit 51 controls each unit of the printer 50. The carriage 52 of the printer 50 is configured to be able to move the head 54 relative to the print medium 90. The control unit 51 and the carriage 52 are electrically connected via a flexible cable 53, and the ejection mechanism of the head 54 operates based on a control signal from the control unit 51.

  In the present embodiment, the carriage 52 includes a holder 60 together with the head 54. As described above, the type of the printer 50 in which the cartridge 20 is mounted on the holder 60 on the carriage 52 that moves the head 54 is also referred to as an “on-carriage type”. In another embodiment, the immovable holder 60 may be configured in a different part from the carriage 52, and ink may be supplied from the cartridge 20 mounted on the holder 60 to the head 54 via a tube. Such a printer type is also called an “off-carriage type”.

  In the present embodiment, the printer 50 includes a main scan feed mechanism and a sub scan feed mechanism for realizing printing on the print medium 90 by relatively moving the carriage 52 and the print medium 90. The main scanning feed mechanism of the printer 50 includes a carriage motor 55 and a drive belt 58. By transmitting the power of the carriage motor 55 to the carriage 52 via the drive belt 58, the carriage 52 is reciprocated in the main scanning direction. The sub-scan feed mechanism of the printer 50 includes a transport motor 56 and a platen 59. When the power of the transport motor 56 is transmitted to the platen 59, the print medium 90 is transported in the sub-scanning direction orthogonal to the main scanning direction.

  A detection unit 57 for optically detecting the remaining amount of ink in the cartridge 20 is provided at a position outside the printing area of the printer 50. Inside the detection unit 57, a light emitting unit and a light receiving unit are provided. The control unit 51 emits light using the light emitting unit of the detection unit 57 when the cartridge 20 passes over the detection unit 57 as the carriage 52 moves, and whether the light receiving unit of the detection unit 57 receives the light. Whether or not the amount of ink remaining in the cartridge 20 is detected (specifically, the presence or absence of ink) is detected.

  In this embodiment, in the use state (also referred to as “use posture”) of the liquid ejection system 10, the axis along the sub-scanning direction (front-rear direction) for transporting the print medium 90 is the X axis, and the carriage 52 is reciprocated. The axis along the main scanning direction (left-right direction) to be performed is the Y axis, and the axis along the gravity direction (up-down direction) is the Z axis. The usage state of the liquid ejecting system 10 is a state of the liquid ejecting system 10 installed on a horizontal surface. In this embodiment, the horizontal surface is a surface parallel to the X axis and the Y axis (XY plane). It is.

  In the present embodiment, the sub-scanning direction (forward direction) is the + X-axis positive direction, the opposite direction (rear direction) is the -X-axis direction, the direction from the lower side to the upper side of the gravity direction (upward direction) is the + Z-axis direction, The opposite direction (downward direction) is taken as the −Z axis direction. In the present embodiment, the direction from the right side surface to the left side surface of the liquid ejecting system 10 is the + Y axis direction (left direction), and the opposite direction is the −Y axis direction (right direction). In the present embodiment, the arrangement direction of the plurality of cartridges 20 attached to the holder 60 is a direction along the Y axis (left and right direction, also simply referred to as “Y axis direction”). The direction along the X axis (front-rear direction) is also referred to as the “X-axis direction”, and the direction along the Z axis (up-down direction) is also referred to as the “Z-axis direction”.

A-2. Configuration of holder 60:
FIG. 2 is a perspective view showing the holder 60 to which the cartridge 20 is mounted. The holder 60 has five wall portions 601, 603, 604, 605, and 606. The four wall portions 603, 604, 605, and 606 extend from the peripheral edge portion of the wall portion 601 in the + Z-axis direction, thereby forming a recess. This recess serves as a cartridge storage chamber 602 for storing the cartridge 20 (also referred to as “cartridge mounting portion 602”). The cartridge housing chamber 602 is divided by a partition wall 607 into a plurality of slots (mounting spaces) that can receive the cartridges 20. Such a partition wall 607 functions as a guide when the cartridge 20 is inserted into the slot, but may be omitted. In addition, in order to optically detect the remaining ink state using the detection unit 57, a through hole 636 is formed in the wall portion 601 so that light can pass through.

  The holder 60 includes a liquid supply pipe 640, a lever 64, and a contact mechanism 62 for each slot. One side surface (+ Z-axis side surface; upper surface) of each slot is opened, and the cartridge 20 is attached to and detached from the holder 60 through the opened one side surface (upper surface).

  The liquid supply pipe 640 forms a flow path for flowing the ink of the cartridge 20 to the head 54. The liquid supply pipe 640 is connected to the liquid supply unit of the cartridge 20 when the cartridge 20 is mounted on the printer 50 (mounted state). An elastic member 648 is provided around the liquid supply pipe 640. The elastic member 648 seals the periphery of the liquid supply unit of the cartridge 20 in the mounted state. This prevents ink from leaking out from the liquid supply part of the cartridge 20 to the surroundings.

  The lever 64 is used when the cartridge 20 is attached or detached. The lever 64 locks the cartridge 20 when the cartridge 20 is mounted on the holder 60 (mounted state).

  The contact mechanism 62 is electrically connected to a circuit board (described later) of the cartridge 20 in the mounted state. The contact mechanism 62 is electrically connected to the control unit 51. As a result, various information (ink color of the cartridge 20 and ink remaining state) is transmitted between the cartridge 20 and the printer 50.

A-3. Appearance configuration of cartridge 20:
FIG. 3 is a first external perspective view of the cartridge 20. FIG. 4 is a second external perspective view of the cartridge 20. FIG. 5 is a front view of the cartridge 20. FIG. 6 is a rear view of the cartridge 20. FIG. 7 is a left side view of the cartridge 20. FIG. 8 is a right side view of the cartridge 20. FIG. 9 is a plan view of the cartridge 20. FIG. 10 is a bottom view of the cartridge 20. The cartridge 20 of the present embodiment is a so-called semi-sealed cartridge 20 that intermittently introduces external air into the liquid storage unit 200 as ink is consumed. The internal configuration of the cartridge 20 will be described later.

  As shown in FIG. 3, the cartridge 20 includes a liquid storage unit 200 for storing ink therein, and a liquid supply unit 280 for distributing ink in the liquid storage unit 200 to the external printer 50.

  As shown in FIGS. 3 to 10, the cartridge 20 has a substantially rectangular parallelepiped appearance. The cartridge 20 includes six surfaces 201 to 206. The six surfaces 201 to 206 constitute the outer surface (outer shell) of the cartridge 20. The six surfaces include a first surface 201, a second surface 202, a third surface 203, a fourth surface 204, a fifth surface 205, and a sixth surface 206. Each surface 201-206 is a substantially flat surface. A substantially flat surface includes a case where the entire surface is completely flat and a case where a part of the surface is uneven. That is, it includes a case where the surface or wall constituting the outer shell of the cartridge 20 can be grasped even if there is some unevenness on a part of the surface. The outer shapes of the first to sixth surfaces 201 to 206 in plan view are all rectangular.

  The first surface 201 and the fourth surface 204 face each other. The second surface 202 and the third surface 203 face each other. The fifth surface 205 and the sixth surface 206 face each other. Here, the direction in which the first surface 201 and the fourth surface 204 face each other is the Z-axis direction (the direction along the first direction). The direction in which the second surface 202 and the third surface 203 face each other is the X-axis direction. The direction in which the fifth surface 205 and the sixth surface 206 face each other is the Y direction. In the present embodiment, when the cartridge 20 is mounted, the first surface 201 constitutes the bottom surface. Here, as shown in FIG. 10, the end (side) on the second surface 202 side of the first surface 201 is also referred to as a first end 201t. In addition, an end (side) on the third surface 203 side of the first surface 201 is also referred to as a second end 201s. In the mounted state of the cartridge 20, the −Z axis direction (first direction) is the vertically downward direction.

  The second surface 202 intersects the first surface 201. The third surface 203 intersects with the first surface 201. The fourth surface 204 intersects the third surface 203 and the fourth surface 204. The fifth surface 205 intersects the first surface to the fourth surface 201-204. The sixth surface 206 intersects the first surface to the fourth surface 204. Here, “intersect” means that the two surfaces “intersect” means that the two surfaces intersect each other and actually intersect each other, the state where the extended surface of one surface intersects the other surface, This means that the extended surfaces intersect each other.

  As shown in FIGS. 3 and 4, the liquid supply unit 280 is provided so as to protrude from the first surface 201. Specifically, the liquid supply unit 280 extends from the first surface 201 along the −Z axis direction (first direction). The liquid supply unit 280 is connected to the printer 50. As shown in FIG. 4, the liquid supply part 280 communicates with the liquid storage part 200 because the one end part 37 b has the liquid communication port 277, and the other end part 37 a forms an opening. Here, the other end 37a is positioned on the −Z-axis direction side (first direction side) with respect to the one end portion 37b. In addition, the liquid supply unit 280 has a flow path for circulating ink in a direction (Z-axis direction) along the first direction. The liquid supply unit 280 will be described below from another viewpoint. That is, the liquid supply unit 280 protrudes outward from the member (first surface) constituting the cartridge 20. In addition, an opening 288 is provided in the other end portion 37 a which is one end of the liquid supply portion 280. The protruding direction of the liquid supply unit 280 is the −Z axis direction. The liquid supply pipe 640 of the printer 50 is inserted into the liquid supply unit 280 through the opening 288. As shown in FIG. 3, the fifth surface 205 is formed with an air introduction port 290 for introducing air into the cartridge 20.

  As shown in FIGS. 4 and 10, in the liquid supply unit 280, the liquid outflow unit 31 through which ink flows toward the liquid supply pipe 640 of the printer 50 and the inside of the liquid supply unit 280 and the outside communicate with each other. A communication port 32 is formed as an opening. That is, the communication port 32 is an opening for connecting the outside and the inside of the liquid supply unit 280. The liquid outflow portion 31 is configured to be able to hold ink. In the mounted state, the liquid supply pipe 640 (FIG. 2) is inserted into the liquid supply section 280 from the opening 288 as a liquid supply port and comes into contact with the liquid outflow section 31, thereby causing the liquid supply section 280 to the liquid supply pipe 640. It becomes possible to distribute the ink. Here, in an unused state before the cartridge 20 is used for the printer 50, the flow path from the liquid storage unit 200 to the liquid outflow unit 31 is filled with ink. Further, the cartridge 20 has a communication path that allows the inside of the liquid supply unit 280 to communicate with the outside. One end of the communication path is a communication port 32, and the other end is an air introduction port 290 (FIG. 3) formed in the fifth surface 205. The details of this communication path will be described later. In the mounted state, the liquid outflow portion 31 comes into contact with a liquid supply pipe 640 that causes the ink to flow through the head 54.

  As shown in FIGS. 4 and 10, a prism unit 270 as a first member is arranged on the first surface 201 so as to form a part of the first surface 201. The prism unit 270 includes a so-called right-angle prism. The right-angle prism of the prism unit 270 is located in the liquid storage unit 200. As shown in FIGS. 4 to 6 and 10, the prism unit 270 includes a transmission surface 275 as a transmission part that forms a part of the first surface 201, and two surfaces (reflection surfaces) 271 ( FIG. 5). The light emitted from the detection unit 57 (FIG. 1) is transmitted through the transmission surface 275. Further, the transmission surface 275 transmits light that is reflected by the surface 271 and travels toward the detection unit 57. As shown in FIG. 10, the transmission surface 275 is disposed on the first surface 201 closer to the first end 201 t than the second end 201 s. On the other hand, the liquid supply unit 280 is disposed on the first surface 201 closer to the second end 201s than the first end 201t. Specifically, in order to keep the transmission surface 275 and the liquid supply unit 280 as far as possible, the transmission surface 275 is close to the first end 201t, and the liquid supply 280 is close to the second end 201s.

  As shown in FIGS. 4 and 10, the first surface 201 is provided with a pair of first container locking portions 331. A pair of 1st container latching | locking parts 331 are arrange | positioned at predetermined intervals in the Y-axis direction. Accordingly, a container receiving portion 333 that is a space defined by the pair of first container locking portions 331 is formed between the pair of first container locking portions 331. The pair of first container locking portions 331 and container receiving portions 333 are used to position the caps relative to the opening 288 when a cap for closing the opening 288 is attached to the cartridge 20. Details of this will be described in the second embodiment. In addition, in the type of cartridge without a cap attached, the pair of first container locking portions 331 and the container receiving portion 333 can be omitted.

  As shown in FIG. 4, a projecting first locking portion 210 is formed on the second surface 202. The first locking portion 210 is locked to the lever 64 in the mounted state. As shown in FIG. 3, a projecting second locking portion 221 is formed on the third surface 203. In the mounted state, the second locking portion 221 is inserted and locked in a through hole (not shown) formed in the wall portion 604 (FIG. 2).

  As shown in FIGS. 3 and 7, the third surface 203 is provided with a pair of recesses 207. Specifically, a pair of recesses 203 is provided in the third surface 203 at a position close to the end on the first surface 201 side. The pair of recesses 207 are arranged side by side in the Y-axis direction. The pair of recesses 207 is used to attach the cap to the cartridge 20 when a cap for closing the opening 288 is attached to the cartridge 20. Details of this will be described in the second embodiment. Here, as shown in FIG. 7, the plane CX is located between the pair of recesses 207. The plane CX is a plane that passes through the center C (FIG. 10) in the Y-axis direction (width direction) of the opening 288 of the liquid supply unit 280 and is parallel to the X-axis and the Z-axis. It should be noted that the pair of recesses 207 can be omitted in a type of cartridge that is not attached with a cap.

  As shown in FIG. 4, the circuit board 15 is provided on the connection surface 208 that connects the first surface 201 and the second surface 202. A plurality of terminals that come into contact with the contact mechanism 62 in the mounted state are formed on the surface of the circuit board 15. Further, a storage device is provided on the back surface of the circuit board 15 for storing various types of information (ink remaining amount status, ink color, etc.) of the cartridge 20.

A-4. Internal structure of cartridge 20:
FIG. 11 is an exploded perspective view of the cartridge 20. FIG. 12 is a front view of the main body member 22. In FIG. 12, the surface 271 of the prism unit 270 is indicated by a dotted line. In FIG. 12, the state in which the ink in the liquid storage unit 200 circulates outside through the liquid supply unit 280 is indicated by arrows. As shown in FIG. 11, the cartridge 20 includes a main body member 22 and a lid member 24. The main body member 22 and the lid member 24 form an outer surface (outer shell) of the cartridge 20. The cartridge 20 includes a valve mechanism 40, a coil spring 294 as an urging member, a pressure receiving plate 293, and a sheet member (film member) 291.

  The main body member 22 and the lid member 24 are formed of a synthetic resin such as polypropylene. The sheet member 291 is formed of a synthetic resin (for example, a material containing nylon and polypropylene) and has flexibility. That is, the sheet member 291 is configured to be deformable by an external force.

  A vent 292 is formed in the sheet member 291. Thus, the cartridge 20 can take air into the liquid storage unit 200 through the air introduction port 290, the ventilation port 292, and the through hole 47 (described later).

  The main body member 22 is a member for forming the liquid storage unit 200 and the liquid supply unit 280. The main body member 22 has a concave shape and is open on one side. A sheet member 291 is attached to the main body member 22 so as to cover the opening on one side surface of the main body member 22. Specifically, as shown in FIG. 12, the sheet member 291 is air-tightly attached to the end surface 22 t that forms the opening of the main body member 22 and the end surface 22 p of the rib in the liquid storage unit 200. Thereby, the liquid storage part 200 for storing ink is formed. That is, the liquid storage unit 200 is formed of a sheet member 291 that can deform a part of the wall that divides the internal space. Thereby, the volume of the liquid storage unit 200 can be changed. In FIG. 12, for easy understanding, a portion where the sheet member 291 is attached is indicated by cross hatching, and a portion where the liquid storage portion 200 is formed is indicated by single hatching.

  Also, as shown in FIG. 12, a lid member 24 is attached to a region outside the region where the sheet member 291 is affixed on the end surface of the main body member 22 on the + Y-axis direction side by heat welding or the like. A first communication chamber 242 that is a part of a communication path that connects the inside of the liquid supply unit 280 and the outside is formed outside the region where the liquid storage unit 200 is formed in the main body member 22. Yes.

  A space is formed between the sheet member 291 and the lid member 24. This space forms part of a communication path that allows the inside of the liquid supply unit 280 to communicate with the outside.

  The pressure receiving plate 293 is made of a synthetic resin such as polypropylene. The pressure receiving plate 293 is disposed in contact with the sheet member 291. The coil spring 294 is disposed in the liquid storage unit 200. Specifically, the pressure receiving plate 293 is in contact with a surface (opposing surface) facing the pressure receiving plate 293 among the surfaces of the main body member 22. The coil spring 294 biases the pressure receiving plate 293 in the direction of expanding the volume of the liquid storage unit 200. The coil spring 294 expands and contracts (moves) along the Y-axis direction.

  The valve mechanism 40 is a mechanism for intermittently introducing air into the liquid storage unit 200 as the ink of the liquid storage unit 200 is consumed. As shown in FIG. 11, the valve mechanism 40 includes a spring member 42, a lever valve 44, and a cover valve 46. The cover valve 46 is accommodated in the corner portion 209 (FIG. 12) where the third surface 203 and the fourth surface 204 intersect in the main body member 22, and is attached to the main body member 22. The cover valve 46 is made of a synthetic resin such as polypropylene. The cover valve 46 has a concave shape, and a sheet member 291 is airtightly attached to an end surface 41 that forms an opening. The concave portion of the cover valve 46 communicates with the vent 292. Further, a through hole 47 penetrating to the back side of the cover valve 46 is formed at the bottom of the concave portion of the cover valve 46.

  The lever valve 44 is pressed against the cover valve 46 by the spring member 42 and closes the through hole 47. The lever valve 44 has a portion that contacts when the pressure receiving plate 293 is displaced. The lever valve 44 may be formed of a synthetic resin such as polypropylene, for example. The lever valve 44 may be formed by two-color molding using an elastic member such as an elastomer and a synthetic resin such as polypropylene.

  The liquid supply unit 280 communicates with the liquid storage unit 200. As shown in FIG. 11, the liquid supply unit 280 includes a supply member 30 inside. The supply member 30 includes a foam (porous member) 34 and a sheet member (filter member) 36. The foam 34 and the sheet member 36 are arranged in order from the one end 37b of the liquid supply unit 280 to the other end 37a. The foam 34 and the sheet member 36 are made of, for example, a synthetic resin such as polyethylene terephthalate. The sheet member 36 is in contact with the liquid supply pipe 640 (FIG. 2) in the mounted state, and distributes ink to the printer 50 side. That is, the sheet member 36 forms the liquid outflow portion 31.

A-5. Operation of communication path and cartridge 20:
FIG. 13 is a first diagram for explaining the operation of the cartridge 20. FIG. 14 is a second diagram for explaining the operation of the cartridge 20. FIG. 15 is a third diagram for explaining the operation of the cartridge 20. 13 to 15 are schematic diagrams for explaining the internal state of the cartridge 20 so that it can be easily understood.

  Prior to describing the operation of the cartridge 20, the communication path 310 that connects the inside of the liquid supply unit 280 and the outside will be described. One end of the communication path 310 is the communication port 32, and the other end is the atmosphere introduction port 290. The communication path 310 includes an end-side flow path 33, a first communication chamber 242, and an air chamber 220 in order in the fluid flow direction from the communication port 32 toward the atmosphere introduction port 290. The one end side flow path 33 is a flow path formed in the liquid supply unit 280. The air chamber 220 is a space between the lid member 24 and the sheet member 291.

  As described above, the cartridge 20 includes the communication path 310, so that the pressure in the liquid supply unit 280 (specifically, the portion of the liquid supply unit 280 where air including the opening 288 exists) is extremely different from the external pressure. Different things can be suppressed.

  For example, when the cartridge 20 is mounted on the printer 50 (at the time of mounting operation), the elastic member 648 (FIG. 2) of the holder 60 seals around the opening 288 of the liquid supply unit 280. Here, when the periphery of the opening 288 is sealed, a part of the elastic member 648 bites into the liquid supply unit 280, whereby the volume in the liquid supply unit 280 decreases and the pressure in the liquid supply unit 280 increases. To do. Generally, the flow path from the liquid storage part 200 to the liquid outflow part 31 has a part with high flow path resistance in order to prevent ink from leaking out from the liquid outflow part 31 to the outside. In the present embodiment, for example, the flow path resistance is increased by the sheet member 36 that can form a liquid meniscus and can hold the liquid, and the foam 34. Therefore, in the state immediately after the periphery of the opening 288 is sealed and the volume in the liquid supply unit 280 is reduced, the reduced amount of air does not sufficiently flow to the liquid storage unit 200. However, the air reduced by the communication path 310 can be released to the outside, and the pressure inside and outside the liquid supply unit 280 can be maintained substantially constant.

  If the communication path 310 is not provided in the cartridge 20, for example, compressed air in the liquid supply unit 280 gradually flows into the liquid storage unit 200 after the cartridge 20 is mounted. As a result, unexpected air may enter the liquid storage unit 200 and the liquid storage unit 200 may not be maintained in an appropriate pressure range. Further, for example, when the air in the liquid supply unit 280 flows into the liquid storage unit 200 until the increased pressure in the liquid supply unit 280 and the pressure in the liquid storage unit 200 are balanced, the pressure in the liquid storage unit 200 is It rises compared to the state before the air flows in. When the user removes the cartridge 20 from the holder 60 in this state, the pressure in the liquid supply unit 280 becomes atmospheric pressure. That is, the pressure in the liquid supply unit 280 decreases, and the ink leaks to the outside through the supply member 30 from the liquid container 200 having a high pressure.

  For example, when the cartridge 20 is not in use, a sealing member (film or cap) for closing the opening 288 may be attached to the opening 288 in order to prevent ink from leaking to the outside. Further, when the cartridge 20 is not used, the cartridge 20 may be housed in a packaging pack that has been decompressed to a pressure lower than atmospheric pressure. When the cartridge 20 is accommodated in the packaging pack and the inside of the packaging pack is decompressed with the sealing member attached, the air chamber 220 is also decompressed. Then, the absolute value of the negative pressure in the liquid storage unit 200 increases (that is, the negative pressure becomes more negative). On the other hand, since the inside of the liquid supply unit 280 is a space in which the circulation of gas to the outside is suppressed, the atmospheric pressure is maintained immediately after the decompression pack. As a result, an imbalance occurs between the pressure in the liquid supply unit 280 and the liquid storage unit 200, and air gradually flows from the liquid supply unit 280 into the liquid storage unit 200. Further, when the cartridge 20 is taken out from the decompression pack, the air chamber 220 returns to the atmospheric pressure, and the absolute value of the negative pressure in the liquid container 200 is also reduced (the original negative pressure is set). On the other hand, the inside of the liquid supply unit 280 is maintained in a decompressed state, which may cause ink to leak from the liquid storage unit 200 to the liquid supply unit 280 side.

  Next, the operation of the cartridge 20 will be described. As shown in FIG. 13, the lever valve 44 includes a valve portion 43 for closing the through hole 47 and a lever portion 49 for opening and closing the valve portion 43. When the cartridge 20 is not used (new state), the liquid storage unit 200 is filled with ink. In this state, the valve portion 43 of the lever valve 44 is biased by the spring member 42 and closes the through hole 47. The coil spring 294 biases the pressure receiving plate 293 in a direction (+ Y-axis direction) in which the volume of the liquid storage unit 200 is enlarged. Thereby, the pressure in the liquid storage unit 200 is maintained at a pressure (negative pressure) lower than the atmospheric pressure.

  As shown in FIG. 14, when the ink in the liquid storage unit 200 is consumed and the pressure receiving plate 293 approaches the sixth surface 206 side, the pressure receiving plate 293 pushes the lever portion 49 toward the sixth surface 206 side. Thereby, the valve part 43 leaves | separates from the through-hole 47, and external air and the liquid storage part 200 are connected temporarily. That is, the lever valve 44 is opened. Then, external air flows into the liquid storage unit 200 through the air inlet 290, the air chamber 220, the vent 292, and the through hole 47. As a result, as shown in FIG. 15, the volume of the liquid container 200 is increased by the amount of air introduced. At the same time, the negative pressure in the liquid container 200 is slightly reduced (approaches atmospheric pressure). Then, as shown in FIG. 15, when a certain amount of air is introduced into the liquid storage unit 200, the pressure receiving plate 293 is separated from the lever unit 49. Thereby, the valve part 43 closes the through-hole 47 again. That is, the lever valve 44 is closed. As described above, when the negative pressure in the liquid storage unit 200 increases as the ink in the liquid storage unit 200 is consumed, the lever valve 44 is temporarily opened to appropriately set the pressure in the liquid storage unit 200. It is possible to maintain the pressure range within a wide range.

A-6. Detailed configuration of the liquid supply unit 280:
FIG. 16 is a partial cross-sectional view of the F9-F9 cross section of FIG. FIG. 16 shows a cross section near the liquid supply unit 280. FIG. 17 is a bottom view of the vicinity of the liquid supply unit 280. As shown in FIG. 16, the liquid supply unit 280 includes a supply unit main body 285, a liquid outflow unit 31, one end-side flow path 33, and an inner wall 35.

  The supply unit main body 285 is a part of the main body member 22. The supply part main body 285 defines and forms an internal flow path (flow path through which ink flows) of the liquid supply part 280. The liquid outflow portion 31 is formed by attaching the sheet member 36 to the supply portion main body 285. In detail, the liquid outflow part 31 is formed as follows. That is, in the liquid supply unit 280, in the flow path from the liquid communication port 277 formed in the one end 37b to the opening 288 formed in the other end 37a, the flow path 38 (first flow) located on the one end 37b side. The sheet member 36 is disposed so as to partition the path 38) and the flow path 39 (second flow path 39) located on the other end 37a side. The sheet member 36 is attached to the supply unit main body 285 by welding or the like. Specifically, the sheet member 36 is attached to a surface 286 parallel to a plane (XY plane) perpendicular to the first direction (−Z axis direction) among the wall surfaces forming the inside of the supply unit main body 285. . With such a configuration, the sheet member 36 functions as the liquid outflow portion 31. Here, the first flow path 38 is filled with ink. The ink in the first flow path 38 is continuous with the ink in the liquid container 200. The sheet member 36 is a porous member. The sheet member 36 can hold ink by forming a meniscus. The second flow path 39 has air. Here, with respect to the direction (Z-axis direction) along the first direction (−Z-axis direction), the one end 37b side is the upper side, and the other end 37a side is the lower side. The liquid outflow portion 31 can circulate ink in a flow passage in the liquid supply portion 280 through a space containing the ink (first flow passage 38) and a space containing the air (second flow passage 39). The compartments are formed as follows. As a result, the liquid outflow portion 31 causes the printer 50 to flow out ink. The first flow path 38 includes a liquid communication port 277 for allowing the ink in the liquid storage unit 200 to flow into the liquid supply unit 280 at the upstream end 37b (FIG. 16). The second flow path 39 includes an opening 288 at the downstream end 37a. The opening 288 opens outward.

  As shown in FIG. 17, the communication port 32 and the liquid outflow portion 31 are arranged at different positions when projected onto a plane perpendicular to the first direction (−Z axis direction). Specifically, the communication port 32 is located closer to the third surface 203 than the liquid outflow portion 31. As shown in FIG. 16, one end side flow path 33 including the communication port 32 of the communication path 310 is formed in the liquid supply unit 280. The one end side flow path 33 extends upward from the communication port 32. Specifically, the one end side flow path 33 extends from the communication port 32 along a direction (+ Z axis direction) opposite to the first direction (−Z axis direction). A portion (a portion including the inner wall 35 as a wall) located on the −Z-axis direction side of the one-end side flow path 33 protrudes in the liquid supply unit 280. The internal flow path of the protruding portion corresponds to a “protruding passage” described in the claims.

  As shown in FIG. 16, the communication port 32 is one end of a passage that protrudes toward the opening 288 in the liquid supply unit 280. The passage is a part of the one-end-side flow path 33 and is a portion on the −Z-axis direction side (ink outflow direction side). The passage projects from the inner wall surface of the liquid supply unit 280. In other words, the passage 33 projects into the space in the liquid supply unit 280 in the first direction (ink outflow direction). This passage has a communication port forming member 32t protruding from the inner wall surface of the liquid supply part 280 as an outer peripheral wall. The communication port forming member 32t protrudes from a surface 286, which is the lower end surface of the supply unit main body 285. The surface 286 is also a surface surrounding the foam 34 inside. In other words, a part of the ink flow path of the liquid supply unit 280 is formed inside the surface 286. The communication port forming member 32t forms the communication port 32 at one end. That is, the communication port 32 that is an opening is one end of a passage (a −Z-axis direction side portion of the one-end-side flow path 33) that protrudes into a space forming the liquid supply unit 280. In addition, the communication port forming member 32 t forms a part of the one end side flow path 33. The communication port forming member 32t is integrally formed with the supply unit main body 285. The outer peripheral wall of the communication port forming member 32t forms an inner wall 35 for inhibiting the flow of ink flowing from the liquid outflow portion 31 toward the communication port 32 along the wall surface of the liquid supply portion 280. That is, in the present embodiment, the inner wall 35 is located between the liquid outflow portion 31 and the communication port 32 on the wall surface of the supply portion main body 285.

  As shown in FIGS. 16 and 17, the communication port 32 is arranged at a distance from a peripheral wall 281 (a side surface 281 of the liquid supply unit 280) that defines an opening 288 by an end portion that forms the side surface of the liquid supply unit 280. Has been. In other words, the communication port 32 is not in contact with the side surface 281 of the liquid supply unit 280.

  FIG. 18 is a diagram for further explaining the configuration of the liquid supply unit 280. FIG. 18 is a diagram schematically showing the vicinity of the communication port 32 of the liquid supply unit 280. The detailed configuration of the liquid supply unit 280 will be further described with reference to FIG. The sheet member 36 includes an attachment portion 362, a sheet center portion 368 as a center portion, and a non-attachment portion 364. The attachment portion 362 is a portion attached to the surface 286 of the supply portion main body 285. The attachment portion 362 is airtightly attached so that ink does not leak from the first flow path 38 to the second flow path 39 side. The sheet center portion 368 is a portion surrounded by the attachment portion 362 in the sheet member 36. In other words, the seat central portion 368 is a portion located inside the attachment portion 362. The sheet center portion 368 partitions the first flow path 38 and the second flow path 39. The sheet central portion 368 causes the ink in the first flow path 38 to flow through the second flow path 39. The sheet center portion 368 includes a first center portion 368v perpendicular to the first direction (−Z axis direction) and an inclined portion 368t that is inclined with respect to the first direction. The inclined portion 368t is connected to the attachment portion 362 and the first center portion 368v. The sheet center portion 368 has a shape that protrudes downward (−Z-axis direction side). That is, the inclined portion 368t is provided so that the portion closer to the first central portion 368v from the mounting portion 362 is located on the lower side (−Z-axis direction side). The non-attachment part 364 is a part that is located outside the attachment part 362 and is not attached to the supply part main body 285.

  As shown in FIG. 18, the non-attachment portion 364, the communication port 32, the other end portion 37 a, and the sheet member 36 are located on the same side (−Z axis direction side) with respect to the surface 286. With the surface 286 as a reference surface, the height of the non-mounting portion 364 is H1, the height of the communication port 32 is H2, and the height of the sheet member 36 is H4. In addition, height H1, H2, H4 is the height of the part in the highest position among each part. In this case, the liquid supply unit 280 satisfies the relationship of H1 <H2. That is, the non-attaching part 364 is located above the communication port 32. Here, it is not necessary that all of the non-attachment portion 364 is located above the communication port 32, and the first peripheral edge portion 364 a located closest to the communication port 32 in the non-attachment portion 364 is more than the communication port 32. It only needs to be located on the upper side. The non-attaching portion 364 corresponds to the peripheral edge portion 364 of the liquid outflow portion 31.

  Further, the liquid supply unit 280 satisfies the relationship of H4> H2. That is, the communication port 32 is located below the liquid outflow portion 31.

A-7. effect:
In the cartridge 20 of the above embodiment, the communication port 32 is not in contact with the side surface 281 of the liquid supply unit 280 (FIG. 15). Thereby, even when the ink flows along the side surface 281, the possibility that the ink flowing on the side surface 281 reaches the communication port 32 can be reduced. Thereby, the possibility that ink leaks to the outside through the opening 32 can be reduced.

  The communication port 32 is one end of a passage 33 protruding into a space forming the liquid supply unit 280 (FIG. 15). As a result, even when ink flows along the inner surface of the liquid supply unit 280, there is a possibility that the communication port forming member 32t (inner wall 35) forming the passage 33 serves as a barrier and the ink reaches the communication port 32. Can be reduced. Thereby, the possibility that ink leaks to the outside through the communication port 32 can be reduced.

  Further, the communication port 32 is located downstream of the first peripheral edge 364a in the ink outflow direction (−Z-axis direction) (FIG. 18). Thereby, the possibility of ink reaching the communication port 32 can be further reduced. For example, in the state of the cartridge 20 in which the downstream side is above the upstream side, the communication port 32 is positioned above the first peripheral edge 364a. Therefore, it is possible to reduce the possibility that the ink leaked from the first peripheral portion 364a and the vicinity of the first peripheral portion 364a reaches the communication port 32.

  Further, the liquid supply unit 280 and the passage 33 are integrally formed. Therefore, it is possible to reduce the possibility that a gap for causing the inside of the liquid supply unit 280 and the passage 33 to communicate at a place other than the communication port 32 due to breakage or the like is generated. This can reduce the possibility of ink flowing into the passage 33 through the gap.

  Further, the communication port 32 is located upstream of the liquid outflow portion 31 in the ink outflow direction (−Z-axis direction) (FIG. 18). The possibility that the communication port 32 or the communication port forming member 32 t forming the communication port 32 hits a member located in the vicinity of the liquid outflow portion 31 can be reduced. For example, the printer 50 corresponds to the other members.

A-8. Other:
The cartridge 20 of the above embodiment has an inner wall 35 located between the communication port 32 and the liquid outflow portion 31 (FIG. 16). Thus, even when the cartridge 20 receives an external force during transportation or the like and the ink in the liquid storage portion 200 leaks out from the liquid outflow portion 31, the ink flow toward the communication port 32 is suppressed by the internal wall 35. it can. Thereby, the possibility that the ink leaked from the liquid outflow portion 31 reaches the communication port 32 can be reduced.

  Further, the cartridge 20 has a communication port 32 formed at one end thereof, and an internal wall 35 formed by a communication port forming member 32t forming a part of the communication path 310 therein (FIG. 16). Thereby, the inner wall 35 can also be formed while forming a part of the communication path 310 including the communication port 32.

  Further, in the cartridge 20, the one end-side flow path 33 extends from the communication port 32 toward the upper side (+ Z-axis direction side) (FIG. 18). On the other hand, the 1st peripheral part 364a is located above the communicating port 32 (+ Z-axis direction side) (FIG. 18). Thereby, even when the ink in the liquid storage unit 200 leaks from the liquid outflow unit 31 to the outside (for example, the second flow path 39), the leaked ink can flow into the communication path 310 through the communication port 32. Can be further reduced. For example, when the cartridge 20 is in a state where the one end portion 37b side is the upper side in the vertical direction and the other end portion 37a side is the lower side in the vertical direction (the same state as the first state and the mounted state), ink is supplied to the communication port 32. Can reach the one end side flow path 33 due to gravity. Further, when the cartridge 20 is in the second state that is upside down from the first state, the communication port 32 is positioned above the first peripheral edge 364a in the vertical direction (FIG. 18). Therefore, it is possible to reduce the possibility that the ink leaking from the liquid outflow portion 31 reaches the communication port 32 and flows into the communication path 310 in the second state.

  Further, the communication port 32 is located on the upper side (+ Z-axis direction side) from the liquid outflow portion 31 (FIG. 18). That is, the communication port 32 is located on the back side (the one end 37 b side) in the liquid supply unit 280 with respect to the liquid outflow unit 31. Thereby, the communication port 32 is located farther from the opening 288 than the liquid outflow portion 31. Therefore, the possibility that the communication port forming member 32t that forms the communication port 32 hits another member can be reduced. For example, when the cartridge 20 is mounted on the holder 60, the communication port 32 can be prevented from being blocked by the elastic member 648 of the holder 60 coming into contact with the communication port 32. Therefore, when the cartridge 20 is attached to the holder 60, the air in the liquid supply unit 280 can be released to the outside through the communication port 32, and therefore, the pressure in the liquid supply unit 280 can be suppressed from increasing.

  Further, the cartridge 20 is integrally formed with the supply unit main body 285 and the inner wall 35. Thereby, compared with the case where the supply part main body 285 and the internal wall 35 are formed by another member, possibility that a clearance gap will arise between the supply part main body 285 and the internal wall 35 by damage etc. can be reduced. Thus, the ink flow from the liquid outflow portion 31 toward the communication port 32 can be more reliably suppressed by the internal wall 35.

  In addition, the communication port 32 is located at a distance without contacting the peripheral wall 281 (FIGS. 16 and 18). Thereby, even when the ink flows along the peripheral wall 281, the possibility that the ink flowing through the peripheral wall 281 reaches the communication port 32 can be reduced.

  In addition, the liquid outflow portion 31 is formed by attaching the sheet member 36 to the supply portion main body 285. Thereby, the liquid outflow part 31 which can hold | maintain ink can be formed easily. Further, the sheet member 36 has a non-attachment portion 364. Thereby, ink can be held by the non-attaching portion 364. Therefore, the possibility of ink reaching the communication port 32 can be reduced.

  In addition, the transmission surface 275 is disposed closer to the first end 201 t than the second end 201 s of the first surface 201, and the liquid supply unit 280 of the first surface 201 is closer to the first end 201 t than the first end 201 t. It arrange | positions at the side close | similar to 2 end part 201s (FIG. 10). Thereby, the possibility that the ink flowing out from the liquid supply unit 280 adheres to the transmission surface 275 can be reduced. Therefore, it is possible to suppress a decrease in detection accuracy when the remaining amount of liquid (the presence or absence of the remaining amount of liquid or the remaining amount of liquid) is optically detected using the prism unit 270.

B. Second embodiment:
B-1. Configuration of cartridge 13:
FIG. 19 is a perspective view of the cartridge 13 of the second embodiment. The cartridge 13 of the second embodiment includes a cartridge body 20 and a cap 70. The cartridge body 20 of the second embodiment has the same configuration as the cartridge 20 of the first embodiment. Therefore, the cap 70 will be described below.

  The cap 70 is detachably attached to the cartridge body 20 so as to close the opening 288 of the liquid supply unit 280. The cap 70 includes a cap main body 74 for closing the opening 288, and a cap lever 72 as a lever used for removing the cap 70 from the cartridge main body 20. When the cartridge body 20 is attached to the holder 60, the user picks the cap lever 72 and removes it from the cartridge body 20. As shown in FIG. 19, the cap lever 72 projects outward from the outer surface of the cartridge body 20. Specifically, the cap lever 72 protrudes outward (−X axis direction side) from the third surface 203. Here, the cap lever 72 and the communication port 32 are located on the same side (−X axis direction side) with respect to the liquid outflow portion 31.

  FIG. 20 is a first perspective view of the cap 70. FIG. 21 is a second perspective view of the cap 70. FIG. 22 is a partial cross-sectional view of the cartridge 13. FIG. 22 is a diagram corresponding to FIG. 16 of the first embodiment.

  As shown in FIGS. 20 and 21, the cap main body 74 includes a concave base portion 75, a first cap member 79 that is disposed in the concave portion of the base portion 75, closely contacts the other end portion 37 a and closes the opening 288. Is provided. The first cap member 79 is formed of an elastomer or the like and has elasticity. Further, the base portion 75 and the cap lever 72 are formed of a synthetic resin such as polypropylene.

  The cap 70 includes a pair of first protrusions 71b, an insertion piece 71a, and a pair of second protrusions 71c. Further, the pair of first protrusions 71b are arranged with a gap in the Y-axis direction. The insertion piece 71a is disposed between the pair of first protrusions 71b. The insertion piece 71a has a protruding shape. The pair of first protrusions 71 b are locked to the first container locking portion 331. Specifically, a part of the pair of first protrusions 71b enters the space formed by the first container locking part 331, and the pair of first protrusions 71b is locked to the first container locking part 331. . Thereby, the positioning of the cap 70 with respect to the cartridge main body 20 in the X-axis direction (the longitudinal direction of the first surface 201 of the cartridge main body 20) is performed. Specifically, when the cap 70 attempts to move in the −X-axis direction with respect to the cartridge body 20 in the attached state (also referred to as “the state where the opening 288 is covered”) attached to the cartridge body 20, the first container The locking portion 331 hits the first protrusion 71b, and the movement in the −X axis direction is restricted.

  The insertion piece 71a is received by the container receiving portion 333, whereby the cap 70 is positioned in the Y-axis direction (the short direction of the first surface 201 of the cartridge main body 20) with respect to the cartridge main body 20. Specifically, when the cap 70 is about to move in the Y-axis direction with respect to the cartridge main body 20 in the attached state, the container receiving portion 333 (specifically, the surface formed by the pair of first container locking portions 331). The movement in the Y-axis direction is restricted.

  The pair of second protrusions 71 c is provided on the side of the cap lever 72 that faces the third surface 203. In the attached state, the pair of second protrusions 71 c are inserted into the corresponding recesses 207 provided on the third surface 203. Accordingly, the second arrangement member 79t comes into airtight contact with the other end portion 37a forming the opening 288, and the opening 288 is sealed (capped). Here, a surface passing through the center of the cap 70 (the center of the cap 0 in the Y-axis direction) and parallel to the X-axis and the Z-axis is located between the pair of recesses 207 (FIG. 7).

  As shown in FIGS. 20 to 22, the first cap member 79 includes a sealing portion 762 and a receiving portion 76. The sealing portion 762 closes the communication port 32 in the attached state where the cap 70 is attached to the cartridge main body 20. The receiving portion 76 receives the liquid outflow portion 31 (sheet member 36) in the attached state. The receiving part 76 has a concave shape.

  The first cap member 79 further includes a cap step portion 766 as a second step portion located between the sealing portion 762 and the receiving portion 76. The cap step portion 766 is formed by the peripheral edge portion 764 of the receiving portion 76. The cap step part 766 includes a convex part 766a. The convex portion 766a extends to the one end portion 37b side (+ Z-axis direction side) from the bottom portion 765 and the sealing portion 762 of the receiving portion 76.

  As shown in FIG. 22, the receiving portion 76 comes into contact with at least a part of the sheet central portion 368 in the attached state. Further, the peripheral edge portion 764 has a facing portion 766b that is inclined along the direction in which the inclined portion 368t of the liquid outflow portion 31 is inclined. The facing portion 766b is formed over the circumferential direction of the peripheral edge portion 764. In other words, the facing portion 766 b is a portion that stands up from the periphery of the bottom portion 765 of the receiving portion 76. Here, the inclined portion 368t and the facing portion 766b do not need to have the same inclination angle with respect to the first direction (−Z axis direction), and may be inclined in the same direction. In the present embodiment, the inclined portion 368t and the facing portion 766b have substantially parallel surfaces facing each other.

  As shown in FIG. 22, the first cap member 79 includes a first arrangement member 79s that forms the receiving portion 76 and the sealing portion 762, and a second arrangement member 79t that abuts against the other end portion 37a.

B-2. effect:
In the second embodiment, the cartridge 13 includes a cap 70 for closing the opening 288. This can reduce the possibility of ink leaking from the opening 288 when the cartridge 13 is transported. The communication port 32 and the cap lever 72 are located on the same side with respect to the liquid outflow portion 31. Thereby, even if the user tries to place the cartridge 13 on the predetermined surface with the cap lever 72 on the lower side, the posture is not stable. Therefore, it is possible to prevent the cartridge 13 from being placed on a predetermined surface in a state where the cap lever 72 is on the lower side. Thereby, even when the ink leaks from the liquid outflow portion 31, the possibility that the leaked ink reaches the communication port 32 can be reduced. The cap 70 has a sealing portion 762. Thereby, the possibility that the ink flows into the communication path 310 via the communication port 32 can be reduced.

  Further, the cap 70 has a cap step 766. Accordingly, since the ink flow can be inhibited by the cap stepped portion, the possibility that the ink reaches the sealing portion 762 through the receiving portion 76 can be reduced. Here, the cap step portion 766 is formed by the peripheral edge portion 764 of the receiving portion 76. Thereby, it is not necessary to provide the member for providing a level | step difference separately. Moreover, the cap stepped portion 766 can be easily formed by the peripheral edge portion 764 by making the receiving portion 76 concave and disposing the sealing portion 762 outside the receiving portion 76.

  Further, the facing portion 766b of the cap 70 is inclined along the direction in which the inclined portion 368t of the liquid outflow portion 31 is inclined. Thereby, the volume of the internal chamber Sp that accommodates the air formed by the liquid supply unit 280 and the cap 70 can be reduced. Thereby, when the cap 70 is attached to the cartridge 13, even when the internal chamber Sp is compressed and the air in the internal chamber Sp flows backward to the liquid storage portion 200, the air flowing into the liquid storage portion 200 through the liquid outflow portion 31. Can limit the amount. Here, the internal chamber Sp is a space located on the opening 288 side (downstream side) of the liquid outflow portion 31 in the space formed by the liquid supply portion 280 and the cap 70. Here, the upstream side and the downstream side are based on the flow direction of the fluid flowing from the one end 37b of the liquid supply unit 280 to the other end 37a.

  Moreover, since the receiving part 76 contacts at least one part of the sheet | seat center part 368, the volume of the internal chamber Sp in which air exists can be made still smaller. Thereby, the amount of air flowing into the liquid storage part 200 from the internal chamber Sp via the liquid outflow part 31 can be further limited. Further, when the cap 70 is in contact with the sheet center portion 368 constituting the liquid outflow portion 31, it is possible to prevent the ink from leaking out from the liquid outflow portion 31.

  Further, the cap 70 has a facing portion 766b that is inclined corresponding to the direction in which the inclined portion 368t is inclined (FIG. 22). The facing portion 766b is formed by the peripheral portion (cap stepped portion 766) of the receiving portion 76. By having the facing part 766b, the possibility that the ink leaked from the liquid outflow part 31 flows out to the outside of the cap 70 can be reduced. In other words, the cap 70 includes a portion 766 that stands on the liquid outflow portion side (+ Z axial direction side) from the periphery of the surface facing the liquid outflow portion 31. Thereby, even when the ink leaked from the liquid outflow portion 31 flows on the surface of the cap 70 facing the liquid outflow portion 31, the ink can be held in the receiving portion 76. Therefore, it is possible to suppress ink from flowing out of the receiving portion 76.

  The cap 70 has members 71 a and 71 b for positioning with respect to the cartridge body 20. Thereby, the opening 288 can be reliably closed using the cap 70. In addition, this can reduce the possibility that the liquid outflow portion 31 is received in the receiving portion 76 and the ink flows out of the receiving portion 76.

  Further, the cartridge 13 of the second embodiment has the same effects as the first embodiment in that it has the same configuration as the cartridge 20 of the first embodiment.

C. Third embodiment:
C-1. Configuration of cartridge 13a:
FIG. 23 is a perspective view of the cartridge body 20a of the third embodiment. FIG. 24 is a perspective view of the cartridge 13a of the third embodiment. The cartridge body 20a of the third embodiment has a larger dimension in the Y-axis direction than the cartridge 20 (corresponding to the cartridge body) of the first embodiment. The cartridge body 20a is mounted on the holder 60 using two slots of the holder 60 (FIG. 2). The cartridge body 20a can accommodate a larger amount of ink than the cartridge 20 of the first embodiment.

  As shown in FIG. 23, the cartridge body 20a has two liquid supply portions 280a protruding from the first surface 201. The two liquid supply units 280a have the same configuration as the liquid supply unit 280 of the first embodiment. That is, in the cartridge 20a of the third embodiment, the ink inside is branched and ink is supplied from the two liquid supply units 280a to the printer 50 side.

  As shown in FIG. 24, the cartridge 13 a includes a single cap 70 a that closes the two openings 288. The cap 70a includes a cap main body 74 and a cap lever 72a, like the cartridge 13 of the second embodiment. The cap lever 72a protrudes outward from the third surface 203 as in the second embodiment.

  FIG. 25 is a first perspective view of the cap 70a. FIG. 26A is a second perspective view of the cap 70a. The cap 70 a according to the third embodiment includes a concave base portion 75 a and a first cap member 79 a that is disposed in the concave portion of the base portion 75 a and closes the opening 288. The first cap member 79a is a member having elasticity such as rubber as in the second embodiment. The difference from the first cap member 79 of the second embodiment is that two first arrangement members 79s corresponding to the two liquid supply units 280a are arranged on the second arrangement member 79t. Each first arrangement member 79s has the same configuration as that of the above-described embodiment, and includes, for example, a sealing portion 762, a cap step portion 766, and a receiving portion 76, respectively.

  A stepped portion 769 as a first stepped portion is formed between the line L1 (the shortest line L1) connecting the two sealing portions 762 along the surface of the cap 70a. The step portion 769 prepares the first arrangement member 79s forming the sealing portion 762 for each liquid supply unit 280a, and arranges the first arrangement member 79s on the same surface (on the surface of the second arrangement member 79t). It is formed with.

C-2. effect:
In the above-described embodiment, even when ink reaches one sealing portion 762, it is possible to suppress ink that has reached one sealing portion 762 by the stepped portion 769 from reaching another sealing portion 762. Moreover, about the point provided with the structure similar to the said 1st, 2nd embodiment, there exists an effect similar to 1st, 2nd embodiment.

D. Fourth embodiment:
D-1. Configuration of the cartridge body 20 and the cap 70b:
26B and 26C are perspective views of the cap 70b of the fourth embodiment. FIG. 26D is a cross-sectional view of the cartridge body 20 with the cap 70b attached. FIG. 26E is an enlarged view of a part of FIG. 26D. Here, FIG. 26E is a diagram corresponding to FIG. 16 of the first embodiment.

  As shown in FIG. 26D, the cartridge 13b of the fourth embodiment includes a cartridge main body 20 and a cap 70b, similarly to the cartridge 13 (FIG. 19) of the second embodiment. The cartridge body 20 of the fourth embodiment has the same configuration as the cartridge 20 of the first embodiment. Moreover, the external structure (appearance shape) which forms the external appearance of the cap 70b of 4th Embodiment is the same structure as the cap 70 (FIGS. 19-21) of 2nd Embodiment. Furthermore, as shown in FIG. 26B, the cap 70b is common to the cap 70 of the second embodiment in that it includes a pair of first protrusions 71b, an insertion piece 71a, and a second protrusion 71c. The differences between the cap 70b of the fourth embodiment and the cap 70 of the second embodiment are mainly that the first cap member 79b is integrally formed and that the sealing portion 762 is not provided. The liquid absorbing material 81 is provided. Therefore, the same configurations as those of the cap 70 of the second embodiment are denoted by the same reference numerals and description thereof is omitted. The first cap member 79b may not be integrally formed.

  As shown in FIG. 26B, a liquid absorbing material 81 that is a member that absorbs ink is disposed in the receiving portion 76 and the cap step portion 766. As shown in FIG. 26E, the liquid absorbent 81 is disposed at a position facing the liquid outflow portion 31 (sheet member 36). The liquid absorbent 81 prevents ink leaking from the liquid outflow portion 31 from flowing out to other portions. The liquid absorbent material 81 may be a member having a function of holding ink. Examples of the member having a function of holding ink include a porous body such as a bell eater (manufactured by Aion Co., Ltd.).

  As shown in FIGS. 26B and 26C, the liquid absorbent material 81 rides on the cap stepped portion 766 from the receiving portion 76 and extends to the outside of the receiving portion 76. Specifically, the end portion 82 of the liquid absorbent material 81 is located closer to the communication port 32 than the cap stepped portion 766. The liquid absorbent material 81 has a sheet shape. The liquid absorbent 81 receives the liquid outflow portion 31 (sheet member 36) together with the receiving portion 76 and the cap stepped portion 766 when the cap 70b is attached to the cartridge main body 20. That is, it can be said that at least a part of the wall surface of the receiving portion 76 is formed of the liquid absorbent material 81.

  As shown in FIG. 26E, in the present embodiment, in the attached state, a portion (also referred to as “opposing portion”) of the liquid absorbent material 81 disposed on the receiving portion 76 is the liquid outflow portion 31 (the sheet member 36). ) And the first central portion 368v that constitute the first central portion 368v. Further, in the attached state, the facing portion of the liquid absorbent material 81 and the liquid outflow portion 31 (sheet member 36) are disposed to face each other in the Z-axis direction. That is, in the attached state, the facing portion of the liquid absorbent material 81 and the liquid outflow portion 31 (sheet member 36) are in an overlapping positional relationship when projected onto a plane (XY plane) parallel to the Z-axis direction.

  Further, as shown in FIG. 26E, in the attached state, a portion (also referred to as “absorbent step portion”) of the liquid absorbent material 81 disposed on the cap step portion 766 is the liquid outflow portion 31 (sheet member 36). ) Of the four inclined portions 368t constituting the) is arranged so as to come into contact with the inclined portion 368t located on the communication port 32 side. In other words, the liquid absorbent 81 is disposed so as to be sandwiched between the cap stepped portion 766 and the inclined portion 368t of the liquid outflow portion 31.

  Furthermore, as shown in FIG. 26E, at least a part of the liquid absorbent material 81 faces the communication port 32 in the Z-axis direction. That is, in the mounted state, the liquid absorbent 81 and the communication port 32 are in a positional relationship in which at least a part thereof overlaps when projected onto a plane (XY plane) parallel to the Z-axis direction. Further, the liquid absorbent material 81 (specifically, the end portion 82) is arranged at an interval without contacting the communication port 32.

D-2. effect:
The cartridge 13b of the fourth embodiment includes a cap 70b having a liquid absorbent 81 (FIG. 26D). Thereby, even if the ink leaks from the liquid outflow portion 31 (sheet member 36) when the cartridge 13b is transported, the ink leaked by the liquid absorbent material 81 can be absorbed. As a result, when the cartridge main body 20 is used, even if the cap 80 is removed from the cartridge 13, the possibility of ink leaking to the outside can be reduced. Thereby, for example, the possibility that the user's hand is stained with ink can be reduced.

  Further, in the mounted state, the liquid absorbent material 81 is disposed at an interval without contacting the first central portion 368v constituting the sheet member 36, and is disposed so as to face at least a part in the Z direction. The Therefore, the ink leaking from the first central portion 368v can be absorbed without damaging the first central portion 368v that causes the ink to flow out to the printer.

Further, in the mounted state, the portion (absorbent step portion) disposed on the cap step portion 766 in the liquid absorbent material 81 is the four inclined portions 368t constituting the liquid outflow portion 31 (sheet member 36). It arrange | positions so that the inclination part 368t (communication opening side inclination part 368t) located in the communicating port 32 side may be contacted (FIG. 26E). Therefore, the ink absorbed by the liquid absorbing material 81 can flow to the liquid outflow portion 31 via the communication port side inclined portion 368t. Therefore,
The ink absorbed by the liquid absorbing material 81 can be returned to the liquid outflow portion 31 (sheet member 36). As a result, when the cartridge body 20 is used, the possibility of ink leaking to the outside can be reduced even if the cap 70b is removed from the cartridge 13. Thereby, for example, the possibility that the user's hand is stained with ink can be reduced. In addition, the amount of ink that cannot be used can be reduced. Furthermore, since the liquid absorbing material 81 is disposed so as to be sandwiched between the cap stepped portion 766 and the inclined portion 368t of the liquid outflow portion 31 (FIG. 26E), ink flows out from the liquid outflow portion 31 to the communication port 32. The flow path can be narrowed. As a result, the possibility of ink flowing into the communication port 32 can be reduced.

  Further, in the attached state, the liquid absorbent 81 and the communication port 32 are in a positional relationship in which at least a part thereof overlaps when projected onto a plane (XY plane) parallel to the Z-axis direction (FIG. 26E). Therefore, even if the ink flows out into the space 83 (FIG. 26E) configured by the communication port 32 and the cap 70b, the possibility of the ink flowing into the communication port 32 can be reduced. In addition, the liquid absorbing material 81 is arranged at an interval so that a part of the liquid absorbing material 81 does not come into contact with the communication port 32, so that the ink held by the liquid absorbing material 81 directly enters the communication port 32. The possibility of inflow can be reduced.

D-3. Modification of the fourth embodiment:
In the fourth embodiment, the liquid absorbent material 81 is employed as a member having a function of holding (absorbing) ink (FIG. 26B). Instead, the function of holding (absorbing) ink in the receiving portion 76 itself. (Structure) may be provided. As a structure capable of holding ink, an uneven shape including a groove formed on the surface of the receiving portion 76 can be cited. Capillary force is generated by the uneven shape, and the ink can be held by the receiving portion 76.

  In the fourth embodiment, the liquid absorbent material 81 is disposed in the receiving portion 76 and the cap step portion 766. However, the liquid absorbent material 81 may be disposed only in the receiving portion 76 or only in the cap step portion 766. Thereby, the ink leaking from the liquid outflow part 31 can be absorbed. In this case, on the inner surface of the cap 70b, it is preferable that the liquid absorbent material 81 is disposed on at least a part of the cap 70b from a portion facing the liquid outflow portion 31 to a portion facing the communication port 32. Thereby, the possibility that the ink leaked from the liquid outflow portion 31 flows into the communication port 32 can be reduced.

  In the fourth embodiment, in the attached state, a portion (opposed portion) disposed on the receiving portion 76 of the liquid absorbent 81 is a first central portion 368v constituting the liquid outflow portion 31 (sheet member 36). Although it arrange | positions at intervals without contacting, you may arrange | position so that it may contact. By arranging both 81 and 368v in contact with each other, the liquid absorbing material 81 can absorb the ink more.

  In the fourth embodiment, in the attached state, a portion (absorbent step portion) disposed on the cap step portion 766 of the liquid absorbent material 81 has four slopes constituting the liquid outflow portion 31 (sheet member 36). Of the portion 368t, the inclined portion 368t located on the communication port 32 side is disposed. However, it may be arranged so as to be in contact with at least one of the four inclined portions 368t, and may be arranged so as to be in contact with a plurality. Moreover, both 81 and 368t do not need to contact. Even in this case, by narrowing the space between the cap stepped portion 766 and the inclined portion 368t of the liquid outflow portion 31, the possibility of ink flowing out can be reduced. Furthermore, the liquid absorbing material 81 is disposed so as to be sandwiched between the cap stepped portion 766 and the inclined portion 368t of the liquid outflow portion 31. However, the liquid absorbent 81 may be disposed so as to be sandwiched between the cap stepped portion 766 and the mounting portion 362 (FIG. 18). Even in this case, by narrowing the space between the cap stepped portion 766 and the inclined portion 368t of the liquid outflow portion 31, the possibility of ink flowing out can be reduced.

  In the fourth embodiment, in the attached state, the liquid absorbent 81 is arranged so that at least a part thereof overlaps with the communication port 32 when projected onto the XY plane, but may not overlap. It suffices if a part of the liquid absorbent 81 exists in the space 83 connected to the communication port 32. Even in this case, the amount of ink flowing into the communication port 32 can be reduced.

  In the fourth embodiment, in the attached state, the liquid absorbent material 81 is disposed so that the end portion 82 of the liquid absorbent material 81 does not come into contact with the communication port 32. However, the liquid absorbent material 81 may be brought into contact. The ink 82 can be absorbed by the liquid absorbing material 81 when the ink leaking into the space 83 connected to the communication port 32 attempts to flow into the communication port 32 due to the contact between the two 82 and 32.

  The cap 70b of the fourth embodiment may be modified so as to be applicable to a cartridge body having a plurality of liquid supply units 280. FIG. 26F is a first perspective view of a cap 70c as a modified example. FIG. 26G is a second perspective view of a cap 70c as a modified example. A cap 70c, which is a modification of the cap 70b of the fourth embodiment, can be attached to the cartridge body 20a (FIG. 23) of the third embodiment. The cap 70c includes a first cap member 79c that is wider in the Y-axis direction than the first cap member 79b of the fourth embodiment. Further, the first cap member 79c corresponds to the two liquid supply portions 280a of the cartridge main body 20a (FIG. 23), the two receiving portions 76, the two cap step portions 766, the two liquid absorbing materials 81, and the like. Is provided. Moreover, about the structure similar to the cap 70a (FIG. 25) of 3rd Embodiment, it attaches | subjects the same code | symbol and abbreviate | omits description. The cap 70c according to the modified example also has the same effect as the configuration similar to the cap 70b according to the fourth embodiment.

E. Fifth embodiment:
E-1. Cartridge playback method:
In the fifth embodiment, a method for reproducing the above-described cartridges 13, 13a, 13b, 20, and 20a will be described.

  When the ink in the cartridges 13, 13 a, 13 b, 20, and 20 a is consumed and the ink in the cartridges is exhausted, the cartridges 13, 13 a, 13 b, 20, and 20 a are cleaned and then refilled with ink. Available. In the fifth embodiment, a reproducing method for reusing the cartridges 13, 13a, 13b, 20, 20a described so far will be described.

The sheet member (film member) 36 provided in the liquid outflow portion 31 of the cartridges 13, 13 a, 13 b, 20, and 20 a is in contact with a liquid supply pipe 640 that circulates ink through the head 54 when mounted on the printer 50. To do.
When the sheet member 36 and the liquid supply pipe 640 come into contact with each other, the sheet member 36 receives stress from the liquid supply pipe 640. The sheet member 36 may be damaged by this force. Specifically, the sheet member 36 may be broken or damaged. This damage becomes significant when the user repeatedly attaches and detaches the cartridges 13, 13, 13b, 20, and 20a to the holder 60. When the cartridges 13, 13a, 13b, 20, and 20a having the sheet member 36 that is torn and deformed are refilled with ink, the following problems may occur. For example, ink may leak from a torn portion of the sheet member 36. In addition, for example, if a bubble enters the head 54 from a deformed location, ejection failure of the head 54 may occur.

Therefore, it is conceivable to replace the sheet member 36 when the used cartridges 13, 13a, 13b, 20, 20a are regenerated.
However, since the sheet member 36 is attached to the supply unit main body 285 by welding or the like, it is difficult to replace it.
Therefore, in the fifth embodiment, a method for regenerating the used cartridges 13, 13a, 13b, 20, 20a without exchanging the sheet member 36 will be described.

  FIG. 26H is an enlarged view of the vicinity of the liquid supply unit 280 of the cartridge 20b (regenerated cartridge 20b) of the fifth embodiment. Except for the configuration of the liquid supply unit 280, the configuration is the same as that of the cartridges 13, 13a, 13b, 20, 20a. The regenerated cartridge 20b is also referred to as a regenerated cartridge 20b.

  As shown in FIG. 26H, in the liquid supply unit 280 of the fifth embodiment, the opening 288 is covered with a sheet member (film member) 93 while leaving the sheet member 36. That is, the sheet member 93 is airtightly attached by welding or the like without having a gap at the other end portion 37a so as to cover the opening 288. The difference from sheet members 92 and 94 in FIG. 27 described later is that the sheet members 92 and 94 are made of a material that cannot transmit liquid, whereas the sheet member 93 of the fifth embodiment is made of a material that can transmit liquid. It is a point that is formed. By contacting at least a part of the sheet member 93 with the liquid supply pipe 640, ink can be circulated through the head 54. Here, in a state in which at least a part of the sheet member 93 is in contact with the sheet member 36, the sheet member 93 may be attached to the other end portion 37 a so as to cover the opening 288. By doing so, ink flows from the sheet member 36 to the sheet member 93, and the ink can be satisfactorily supplied to the printer 50 via the sheet member 93. Further, the sheet member 93 may be flexible, and may come into contact with the sheet member 31 by being pushed in by the liquid supply pipe 640 in the mounted state of the cartridge 20b. In FIG. 26H, the communication port 32 is also closed by the sheet member 95, but may not be closed. In the case of closing, the same material as the sheet member 93 may be used, or the same material as the sheet members 92 and 94 shown in FIG. The sheet member 93 for covering the opening 288 is preferably configured to be able to form a meniscus by liquid (ink). By doing so, it is possible to reduce the possibility of ink leaking outside from the sheet member 93 in a state where the cartridge 20b is not attached to the printer 50. In the reproduction cartridge 20b, the sheet member 93 serves as the liquid outflow portion 31 for circulating ink to the outside (liquid supply pipe 640).

E-2. effect:
In the above-described embodiment, when the sheet member (film member) 36 functioning as the liquid outflow portion 31 of the cartridges 13, 13 a, 13 b, 20, and 20 a is torn before use and is damaged due to use or the like. Even so, the liquid outflow portion 31 can be newly provided without replacing the sheet members 36 of the used cartridges 13, 13a, 13b, 20, 20a. Thereby, the cartridge 20b can be easily reproduced.

F. Sixth embodiment:
F-1. Cartridge playback method:
In the sixth embodiment, a method for reclaiming a used cartridge and a remanufactured cartridge obtained by regenerating a used cartridge will be described.

  FIG. 26I is a diagram for explaining the reproduction cartridge 20c. FIG. 26I corresponds to FIG. Differences between the regenerative cartridge 20c of the sixth embodiment and the cartridge 20 (FIG. 16) of the first embodiment are as follows. That is, the communication port 32 is formed in the cartridge 20 of the first embodiment, whereas the communication port 32 is sealed or covered with a member such as the sheet member 95a in the reproduction cartridge 20c. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration and the description thereof is omitted. The sheet member 95a is formed of a material that does not transmit liquid.

As described above, the communication port 32 also functions to prevent ink leakage caused by pressure imbalance assumed when the cartridge 20 is stored in a packaging pack under reduced pressure.
On the other hand, in recent years, a method for reclaiming a used cartridge by refilling ink after collecting the used cartridge for environmental considerations and the like, and a regenerated cartridge have been provided.
Such a remanufactured cartridge may be sold without being housed in a packaging pack from the viewpoint of environmental considerations. In addition, there are cases where the cartridge is sold without being stored under reduced pressure, although it is stored in the packaging pack for reasons such as ensuring the degree of deaeration of the ink or cost reduction. In such a reproduction cartridge, since there is a low possibility of ink leakage due to the pressure imbalance described above, the communication port 32 does not perform its function in terms of ink leakage due to pressure imbalance. Further, since the communication port 32 communicates with the atmosphere introduction port 290, there is a possibility that the ink that has entered the communication port 32 leaks from the atmosphere introduction port 290.
Therefore, it is desirable that the communication port 32 be sealed or covered with respect to the regenerated cartridge 20c obtained by regenerating the used cartridge 20. That is, it is preferable to block a fluid flow path between the outside via the communication port 32 and the inside of the liquid supply unit 280 (specifically, the second flow path 39). Here, the fluid means at least a liquid.

  As a method of sealing or covering the communication port 32, there are the following various methods. For example, as one method, as shown in FIG. 26I, there is a method of sealing the communication port 32 with a sheet member 95a. For example, as another method, there is a method of filling the passage 33 including the communication port 32 with resin or the like. For example, as another method, there is a method of welding resin or the like to the communication port 32 so as to close the communication port 32. Further, as another method, for example, there is a method of closing the communication port 32 by welding the member itself (the periphery of the communication port 32, the communication port forming member 32t) that forms the communication port 32. That is, for the remanufactured cartridge 20c, the communication port 32 formed in the cartridge 20 may be sealed or covered, or the passage 33 may be closed, and the sealing method, covering method, closing method, etc. There is no limitation on the method of blocking the distribution channel.

  It is desirable that the resin used when sealing or covering the communication port 32 or the communication port 32 sealed or covered does not protrude outward (opening 288 side) from the sheet member 36. . That is, when the member used for blocking the distribution path or the communication port 32 itself protrudes outward (opening 288 side) from the sheet member 36 in the regenerative cartridge 20c, the caps 70, 70a, 70b, 70c, This is because contact with other members such as the liquid supply pipe 640 and the elastic member 648 may cause damage to the other members.

F-2. effect:
When the used cartridge 20 in which the communication port 32 is formed is regenerated, the distribution path is interrupted so that the ink leaks out from the air introduction port 290 when the regenerated cartridge 20c is stored. Can be suppressed.
Further, a member such as a resin used when sealing or covering the communication port 32, or the communication port 32 sealed or covered by the member does not protrude outward (opening 288 side) from the sheet member 36. By doing so, it can control that other members are damaged by contacting caps 70, 70a, 70b, and 70c, other members, such as liquid supply pipe 640 and elastic member 648.

F-3. Modification of the sixth embodiment:
In the sixth embodiment, when the used cartridge 20 is regenerated, the flow path is blocked by sealing or covering the communication port 32 with resin or the like. However, the flow path for blocking the resin or the like is blocked. The member (blocking member) may be configured to be removed when the user uses it. That is, since the communication port 32 is sealed or covered before use by the user, ink leakage from the air introduction port 290 connected to the communication port 32 is prevented when the reproduction cartridge 20c is stored. Can be suppressed. On the other hand, when the user uses the blocking member, the inside and outside of the liquid supply unit 280 communicate with each other via the communication port 32. Thereby, it is possible to suppress ink leakage due to pressure imbalance that may occur when the reproduction cartridge 20c attached to the holder 60 is removed from the holder 60.

G. Seventh embodiment:
G-1. Reproduction method of caps 70b and 70c:
In the seventh embodiment, a method for regenerating the caps 70b and 70c will be described. FIG. 26J is a perspective view of the regenerated cap 70g.

  When the caps 70b and 70c are used as one component of the cartridge 20, the caps 70b and 70c can be reused after being cleaned. In the seventh embodiment, a reproduction method for reusing the caps 70b and 70c described so far will be described. The regenerated cap is also referred to as a reproduction cap 70g.

The liquid absorbent material 81 is disposed in the caps 70b and 70c before reproduction (FIGS. 26B and 26F). The liquid absorbent 81 has a function of holding the liquid leaking from the liquid outflow portion 31.
Accordingly, the liquid absorbing material 81 holds a liquid (ink) corresponding to the color of the attached cartridge 13, 13 a, 13 b, 20, 20 a. More specifically, the liquid absorbing material 81 of the caps 70b and 70c attached to the cartridge containing the black ink has the caps 70b and 70c attached to the cartridge containing the black liquid (ink) and yellow ink. The liquid absorbing material 81 is a yellow liquid (ink), and the caps 70b and 70c are attached to a cartridge for storing magenta ink. The liquid absorbing material 81 of the cap 70c is a cartridge for storing magenta liquid (ink) and light magenta ink. The light absorbing material 81 of the caps 70b and 70c attached to the ink is light magenta liquid (ink), and the liquid absorbing material 81 of the caps 70b and 70c attached to the cartridge containing the cyan ink is cyan liquid (ink). ), Cart containing light cyan ink Tsu cap 70b attached to di-, the liquid absorbing material 81 of 70c liquid light cyan (ink) is held.

When the caps 70b and 70c are regenerated, a method of cleaning the liquid absorbent 81 can be considered in order to remove the liquid held in the liquid absorbent 81. The caps 70b and 70c after cleaning the liquid absorbent 81 are also referred to as regeneration caps 70b and 70c.
However, if time has passed since the liquid contacted and held the liquid absorbent 81, there is a possibility that it cannot be completely removed by cleaning. If it cannot be completely removed, there may occur a situation in which the reproduction caps 70b and 70c holding the ink different from the ink color stored in the cartridges 13, 13a, 13b and 20 are mounted. Specifically, the reproduction caps 70b and 70c in which the liquid absorbing material 81 in which the black ink is held are arranged in the cartridges 13, 13a, 13b, 20, and 20a that store the light cyan ink can be mounted. In this case, the liquid absorbing material 81 of the regeneration caps 70b and 70c may come into contact with the sheet members 36 of the cartridges 13, 13a, 13b, and 20 that store the light cyan ink, and light cyan and black may be mixed. If color mixing occurs, problems may occur in color reproduction using the liquid ejection system 10 (FIG. 1). In addition, when the reproduction caps 70b and 70c once removed from the cartridges 13, 13a, 13b, 20, and 20a are to be attached to the cartridges 13, 13a, 13b, 20, and 20a again, the user may be confused.
Therefore, in the seventh embodiment, a reproduction cap 70g that prevents the above-described color mixture and user confusion will be described.

As shown in FIG. 26J, in the regeneration cap 70g of the seventh embodiment, a liquid absorbent material 81a is further stacked on the liquid absorbent material 81 shown in the fourth embodiment. Specifically, after the used caps 70b and 70c are collected, a predetermined process such as cleaning is performed while the liquid absorbent material 81 is attached. When removing the liquid absorbing material 81 from the caps 70b and 70c, there is a possibility that the portion to which the liquid absorbing material 81 is attached may be peeled off, and dust is generated, so that the liquid is removed from the caps 70b and 70c. Predetermined processing is performed without removing the absorbent material 81. After the predetermined treatment, a liquid absorbent material 81a is further disposed on the liquid absorbent material 81. The liquid absorbent material 81 a has the same configuration as the liquid absorbent material 81.
In addition, the color of the liquid absorbent material 81a is an ink color (other than white) or black that is not used by the printer 50 to which the cartridges 13, 13a, 13b, and 20 to which the regeneration cap 70g including the liquid absorbent material 81a is attached is attached. can do.

G-2. effect:
In the seventh embodiment, it is possible to provide a reproduction cap 70g that can reduce the possibility of color mixing and user confusion without removing the liquid absorbent material 81 included in the caps 70b and 70c before reproduction.

  Specifically, even when the liquid absorbent 81 in the caps 70b and 70c before regeneration holds liquid, the liquid absorbent 81 is further disposed on the liquid absorbent 81 during regeneration. When printing on the print medium 90 using the liquid ejecting system 10, it is possible to prevent color misregistration and deterioration of color reproducibility due to color mixing.

  The color of the liquid absorbent material 81a is an ink color (other than white) that is not used by the printer 50 to which the cartridge 13, 13a, 13b, 20, 20a to which the regeneration cap 70g including the liquid absorbent material 81a is attached is black or black. It is preferable. The reason for this preference will be described in detail below. Even when the ink adhering to the liquid absorbent 81 and the ink of the sheet member 36 are mixed, a new liquid absorbent 81 a is provided on the liquid absorbent 81 in the cap 70 g. That is, a new liquid absorbent material 81a in which no color mixture occurs is provided on the upper surface of the mixed liquid absorbent material 81. Therefore, when the reproduction cap 70g once removed from the cartridge 13, 13a, 13b, 20, 20a is to be attached to the cartridge 13, 13a, 13b, 20, 20a again, the possibility of causing confusion to the user is reduced. be able to. When the cap 70c (FIG. 26F) is regenerated, the liquid absorbent material 81a may be attached on each of the two liquid absorbent materials 81.

G-3. Modification of the seventh embodiment:
In the seventh embodiment, the preferred color of the liquid absorbent material 81a is the color of ink that is not used in the printer 50 to which the cartridges 13, 13a, 13b, 20, 20a to which the regeneration cap 70g including the liquid absorbent material 81a is attached is attached. Or black. However, the color of the liquid absorbent material 81, not the liquid absorbent material 81a, is an ink that is not used in the printer 50 to which the cartridges 13, 13a, 13b, 20, 2a to which the caps 70b, 70c including the liquid absorbent material 81 are attached are attached. Or a black color. That is, the color of the liquid absorbent material 81 included in the caps 70b and 70c before the reproduction is not limited to the reproduction cap 70g, and is not used in the printer 50 having the cartridges 13, 13a, 13b, 20, and 20a to which the caps 70b and 70c are attached. The ink color (other than white) or black can also be used.

H. Other embodiments:
H-1. First other embodiment:
FIG. 27 is a schematic diagram for explaining the first other embodiment. In the above embodiment, the caps 70, 70 a, 70 b, 70 c, and 70 g are used to close the communication port 32 and the opening 288, but the present invention is not limited to this. The communication port 32 and the opening 288 may be closed with another sealing member. For example, as shown in FIG. 27, in the first other embodiment, the sheet member 92 as the liquid supply port sealing member closes the opening 288, and the sheet member 94 as the opening sealing member seals the communication port 32. doing. Each of the sheet members (film members) 92 and 94 is made of a material that cannot transmit liquid. Here, the sheet member 94 is preferably formed of a material that allows air to pass therethrough. By doing so, the intrusion of ink into the communication path 310 can be suppressed, and the pressure in the second flow path 39 in which air is accommodated can be maintained at the same level. Each of the sheet members 92 and 94 closes the opening 288 and the communication port 32 in a removable state.

  The sheet member 94 is provided at a position that does not overlap the liquid outflow portion 31 when the cartridge is projected onto a plane perpendicular to the first direction (−Z axis direction). Here, when the ink adheres to the sheet member 94, when the sheet member 94 is peeled off from the communication port 32, the possibility that the ink scatters and enters the communication port 32 increases. Further, when the sheet member 94 is formed of a material that transmits air, clogging or the like occurs when the sheet member 94 gets wet with ink, and the original function (function of transmitting air) of the sheet member 94 is impaired. It is. However, since the sheet member 94 is provided at a position that does not overlap the liquid outflow portion 31, it is possible to reduce the possibility that the ink leaked from the liquid outflow portion 31 adheres to the sheet member 94. Therefore, generation | occurrence | production of said malfunction can be reduced.

  Further, the sheet member 94 has one end 94p provided to extend outward from the opening 288. Further, the sheet member 92 has one end portion 92p provided to extend outward from the opening 288. In this way, the user can easily remove the sheet members 92 and 94 from the cartridge. The one end portions 92p and 94p are bonded to each other. That is, the one end portions 92p and 94p of the two sheet members 92 and 94 are integrated. Thereby, the user can remove the two sheet members 92 and 94 from the cartridge by one operation.

H-2. Second other embodiment:
FIG. 28 is a schematic diagram for explaining a second other embodiment. 27 differs from the first other embodiment shown in FIG. 27 in that the sheet members 92 and 94 are not adhered to each other, and the sheet member 92 extends outward from the opening 288 longer than the sheet member 94. it can. By doing so, it is possible to prompt the user to pinch the sheet member 92 before the sheet member 94 and remove it from the cartridge. Thereby, the possibility that the ink flows into the communication port 32 can be further reduced by removing the sheet member 94 from the cartridge after the sheet member 92.

H-3. Third other embodiment:
FIG. 29 is a diagram for explaining a third other embodiment. In the first embodiment, the relationship of H4> H2 is satisfied, but instead, the relationship of H4 <H2 may be satisfied. In other words, the communication port 32 may be located on the lower side (−Z-axis direction side) than the liquid outflow portion 31. In other words, the communication port 32 may be located downstream of the liquid outflow portion 31 in the liquid outflow direction of the liquid supply unit. By doing so, it is possible to further reduce the possibility that the ink leaked from the liquid outflow portion 31 flows into the communication path 310 via the communication port 32. For example, even if ink leaks from the liquid outflow portion 31 when the cartridge is in the second state (the + Z-axis direction is a vertically downward direction), the communication port 32 extends upward from the liquid outflow portion 31 in the vertical direction. Therefore, the possibility of ink reaching the communication port 32 can be reduced.

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

I-1. First modification:
In the above embodiment, a so-called semi-sealed type cartridge has been described as an example. However, the present invention may be applied to other types of cartridges. For example, the present invention can be applied to an ink cartridge in which the liquid container 200 is always in communication with the outside, and an ink cartridge (so-called ink pack) in which the liquid container 200 is always sealed.

I-2. Second modification:
In the above-described embodiment, the inner wall 35 is formed by the outer peripheral wall of the communication port forming member 32t. However, the present invention is not limited to this, and the inner wall 35 is erected from the wall surface partitioning the liquid supply unit 280, and the liquid outflow The inner wall 35 may be formed by a wall that is spaced from both the portion 31 and the communication port 32. Further, for example, the cartridges 13, 13 a, and 20 are suppression units that are positioned between the communication port 32 and the liquid outflow unit 31 on the wall surface that divides the liquid supply unit, and the communication port 32 and the liquid outflow unit 31. It is only necessary to provide a suppression unit that suppresses the flow of ink between the two. In the above embodiment, the inner wall 35 corresponds to the suppressing portion. Moreover, as a suppression part, the unevenness | corrugation provided on the wall surface, the holding member (for example, porous members, such as sponge) etc. which can hold | maintain the liquid provided on the wall surface, etc. are mentioned.

I-3. Third modification:
In the embodiment described above, the communication port sealing member for closing the communication port 32 such as the caps 70 and 70a and the sheet member 94 blocks the communication port 32 in the entire area. It only has to be closed at. Even in this case, the possibility of ink flowing into the communication path 310 via the communication port 32 can be reduced.

I-4. Fourth modification:
In the above embodiment, the cap step portion 766 is a convex portion (FIG. 22), but may be a concave portion, or may be provided with a convex portion and a concave portion. Even in this case, the possibility of ink reaching the sealing portion 762 via the receiving portion 76 can be reduced.

I-5. Fifth modification:
In the above-described embodiment, the caps 70 and 70a are in contact with the sheet center portion 368 in the attached state, but may not be in contact. By doing so, the possibility of ink adhering to the caps 70, 70a can be reduced.

I-6. Sixth modification:
FIG. 30 is a diagram for explaining a modification of the supply member 30g. FIG. 31 corresponds to FIG. Here, an example in which the supply member 30 of the cartridge 20 is used instead of the supply member 30g of the present modification is illustrated. The supply member 30g can also be used in the cartridges 20a to 20c of the other embodiments that used the supply member 30. The difference between the supply member 30g and the supply member 30 is that the supply member 30g newly includes a pressing member 80. Since the configuration of the other supply member 30g is the same as that of the supply member 30, the same components are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 30 and 31, the foam 34 and the pressing member 80 can be disposed inside the sheet member 36 (the liquid storage unit 200 side and the upstream side). The pressing member 80 has a spring portion 80a. The spring portion 80a biases (presses) the frame 34 toward the side where the sheet member 36 is located (the −Z axis direction side).

  In the case where the supply member 30g includes the pressing member 80, when the caps 70 to 70c and 70g are brought into contact with the sheet member 36 functioning as the liquid outflow portion, the cap 70 to 70 is sandwiched between the sheet member 36 itself and the sheet member 36. There is a possibility that other members (form 34 and pressing member 80) of the supply members 30 and 30g arranged at positions facing 70c and 70g are deformed. If these members 36, 34, 80 are deformed, there is a possibility that liquid supply failure from the cartridges 20, 20 a to the printer 50 may be caused. Therefore, in a state where the caps 70 to 70c and 70g are attached to the cartridges 20 and 20a to 20c and cover the opening 288 (also referred to as “attached state” or “a state where the opening 288 is sealed”), the caps 70 to 70c, It is desirable that 70 g does not contact the sheet member 36. That is, in the mounted state, the caps 70 to 70c and 70g are arranged at intervals without contacting the supply members 30 and 30g arranged in the liquid supply portions 280 and 280a of the cartridges 20, 20a to 20c. Is preferred.

I-7. Seventh modification:
The present invention can be applied not only to an ink jet printer and its ink cartridge, but also to any liquid ejecting apparatus that consumes liquid other than ink and cartridges (liquid storage containers) used in those liquid ejecting apparatuses. . For example, the present invention can be applied as a cartridge used in the following various liquid ejecting apparatuses.
(1) Image recording device such as a facsimile machine (2) Color material injection device used for manufacturing a color filter for an image display device such as a liquid crystal display (3) Organic EL (Electro Luminescence) display, surface emitting display (Field Electrode material injection device used for electrode formation such as Emission Display (FED), etc. (4) Liquid injection device for injecting liquid containing biological organic material used for biochip manufacturing (5) Sample injection device as a precision pipette (6) Lubrication Oil injection device (7) Resin liquid injection device (8) Liquid injection device for injecting lubricating oil pinpoint to precision machines such as watches and cameras (9) Micro hemispherical lenses (optical lenses) used in optical communication elements, etc. ), Etc., to inject a transparent resin liquid such as an ultraviolet curable resin liquid onto the substrate (10) Acid or to etch the substrate A liquid ejecting apparatus that ejects alkaline of the etching solution (11) any other liquid ejecting apparatus comprising a liquid consumption head for discharging minute liquid droplets

  The “droplet” refers to the state of the liquid ejected from the liquid ejecting apparatus, and includes those that have tails in the form of particles, tears, and threads. The “liquid” here may be any material that can be consumed by the liquid ejecting apparatus. For example, the “liquid” may be a material in a state in which the substance is in a liquid phase, such as a material in a liquid state having high or low viscosity, and sol, gel water, other inorganic solvents, organic solvents, solutions, Liquid materials such as liquid resins and liquid metals (metal melts) are also included in the “liquid”. Further, “liquid” includes not only a liquid as one state of a substance but also a liquid obtained by dissolving, dispersing or mixing particles of a functional material made of a solid such as a pigment or metal particles in a solvent. Further, representative examples of the liquid include ink and liquid crystal as described in the above embodiment. Here, the ink includes various liquid compositions such as general water-based ink and oil-based ink, gel ink, and hot-melt ink.

I-8. Eighth modification:
While various aspects have been described above, the following aspects can be employed.
In the following embodiments, constituent elements are denoted by reference numerals in the examples in parentheses for reference.

Aspect 1. A liquid storage part (200) for storing a liquid therein, and a liquid supply part (280) having an opening (288) for circulating the liquid to the outside, which is located inside the liquid storage part (200) A liquid supply part (280) having a liquid outflow part (31) for circulating the liquid to the outside, and one end opening (communication port 32) are located in the liquid supply part (200) and the outside and the liquid supply part (200) A cap (70, 70a) attached to a cartridge (20, 20a) comprising a communication passage (310) communicating with the inside of the cartridge,
A cap body (74) for closing the opening (288);
The cap body (74) is a cap having a sealing portion (762) that closes at least a part of the one end opening (32) in an attached state attached to the cartridge (20).
According to the cap of this aspect, even when the liquid leaks from the liquid storage portion in the attached state, the possibility that the liquid flows into the communication path through the one end opening can be reduced.

Aspect 2. The cap (70, 70a) according to aspect 1,
The cap (70, 70a) further includes
A cap lever (72, 72a) used for removing the cap (70, 70a) from the cartridge (20, 20a), wherein the cartridge (20, 20a) is attached to the cartridge (20, 20a). , 20a) cap levers (72, 72a) projecting outward from the outer surface (203);
A receiving portion (76) for receiving the liquid outflow portion (31),
The said sealing part (762) and the cap lever (72, 72a) are caps located in the same side with respect to the said receiving part (76).
According to the cap of aspect 2, it is possible to prevent the cartridge from being placed on the predetermined surface in a state where the cap lever is positioned on the lower side in the vertical direction. Thereby, the possibility that the liquid adhering to the receiving portion reaches the sealing portion can be further reduced.

Aspect 3. The cap (70, 70a) according to aspect 2, further comprising:
It is a cap level difference part (766) located between the said sealing part and the said receiving part, Comprising: It has a cap level difference part (766) provided with at least one of a convex part (766a) and a recessed part.
According to the cap of aspect 3, even when the liquid leaked from the liquid outflow part adheres to the receiving part, the possibility that the liquid reaches the sealing part through the receiving part by the cap stepped part can be reduced.

Aspect 4. A cap according to aspect 3,
The receiving portion (76) is concave.
The cap stepped portion (765) is formed by a peripheral edge portion (764) of the receiving portion (76).
According to the cap of aspect 4, it is not necessary to provide a new separate member for providing the cap stepped portion.

Aspect 5 A cap (70, 70a) according to any one of aspects 1 to 4, comprising:
The liquid outflow portion (31) has an inclined portion (368t) inclined with respect to a predetermined direction (first direction),
The cap (70, 70a) further includes:
Having a facing portion (766b) facing the inclined portion (368t) in the mounted state;
The opposing portion (765b) is a cap that is inclined along a direction in which the inclined portion (368t) is inclined in the attached state where the cap is attached to the cartridge.
According to the cap of aspect 5, in the mounted state, the cap and the liquid supply part are formed, and the volume of the internal chamber that accommodates air can be reduced. Thereby, the quantity of the air which flows in into a liquid storage part via a liquid outflow part from an internal chamber can be restrict | limited.

Aspect 6 A cap (70a) according to any one of aspects 1 to 5, comprising:
A plurality of the liquid supply portions of the cartridge are provided,
A plurality of the sealing portions are provided corresponding to the plurality of one-end openings (32),
The cap further includes
The cap which has a level | step-difference part (769) provided on the line (L1) which connects each said sealing part along the surface of the said cap.
According to the cap of aspect 6, even when the liquid reaches one sealing portion, the liquid that reaches one sealing portion by the stepped portion can be prevented from reaching the other sealing portion.

Aspect 7. A liquid storage part (200) for storing a liquid therein, and a liquid supply part (280) having an opening (288) for circulating the liquid to the outside, which is located inside the liquid storage part (200) A liquid supply part (280) having a liquid outflow part (31) for circulating the liquid to the outside, and one end opening (communication port 32) are located in the liquid supply part (200) and the outside and the liquid supply part (200) A cap (70b, 70c) attached to a cartridge (20, 20a) comprising a communication passage (310) for communicating with the interior of the cartridge (20, 20a),
A cap body (74) for closing the opening (288);
The cap body (74) has a liquid absorbent material (81).

According to the cap of aspect 7, even when the liquid leaks from the opening (280), the liquid can be absorbed by the liquid absorbent material, so that the liquid can be prevented from leaking to the outside.
In aspect 7, it is preferable that the liquid absorbent material (81) is disposed on the side facing the liquid outflow portion (31) in an attached state attached to the cartridge (20), and at least a part of the liquid absorbent material (81) is disposed. More preferably, it is arranged at a position facing (31). By so doing, more of the ink leaking from the liquid outflow portion can be absorbed by the liquid absorbent material.

I-9. Ninth modification:
In the embodiment and the modified example, the caps 70, 70a, 70b, and 70c are used for the cartridges 13, 13a, and 20 having the communication port 32 and the inner wall 35. It may be used. Even in this case, since the liquid supply port (opening 288) is blocked by the caps 70, 70a, 70b, and 70c, the possibility of ink leaking outside the caps 70, 70a, 70b, and 70c can be reduced. . In addition, for example, by attaching the caps 70, 70a, 70b, and 70c to a cartridge that does not have the communication port 32, even if the ink leaks from the liquid outflow portion, the ink is blocked by closing the liquid supply port. The possibility of spilling into the water can be reduced. In particular, the caps 70, 70 a, 70 b, 70 c have a facing portion 766 b (FIG. 22) that is inclined corresponding to the direction in which the inclined portion 368 t of the liquid outflow portion 31 is inclined. With this configuration, the possibility of ink flowing out of the cap can be further reduced. Further, for example, by attaching the caps 70, 70 a, 70 b, and 70 c to a cartridge that does not have the inner wall 35 and has the communication port 32, it is possible to reduce the possibility of ink leaking to the outside through the communication port 32. In the above description, the cartridges 13, 13a, 20 and the caps 70, 70a, 70b, 70c have been described separately. However, the caps 70, 70a, 70b, 70c may be referred to as the cartridges 13, 13a, 20 in some cases. .

DESCRIPTION OF SYMBOLS 10 ... Liquid injection system 13, 13a ... Cartridge 15 ... Circuit board 20, 20a-20c ... Cartridge main body (cartridge)
22 ... Main body member 22p, 22t ... End face 24 ... Lid member 30, 30g ... Supply member 31 ... Liquid outflow part 32 ... Communication port 32t ... Communication port formation member 33 ... One end side flow path 34 ... Form 35 ... Internal wall 36 ... Sheet member 37a ... the other end 37b ... one end 38 ... the first flow path 39 ... the second flow path 40 ... the valve mechanism 41 ... the end face 42 ... the spring member 43 ... the valve section 44 ... the lever valve 46 ... the cover valve 47 ... the through hole DESCRIPTION OF SYMBOLS 49 ... Lever part 50 ... Printer 51 ... Control part 52 ... Carriage 53 ... Flexible cable 54 ... Head 55 ... Carriage motor 56 ... Conveyance motor 57 ... Detection part 58 ... Drive belt 59 ... Platen 60 ... Holder 62 ... Contact mechanism 64 ... Lever 70, 70a, 70b, 70c, 70g ... Cap 72, 72a ... Cap lever 74 ... Cap body 5, 75a ... Base portion 76 ... Receiving portion 79, 79a, 79b, 79c ... First cap member 79s ... First placement member 79t ... Second placement member 80 ... Pressing member 80a ... Spring portion 81, 81a ... Liquid absorbent material 83 ... space 90 ... print medium 92 ... sheet member 92p ... one end 94 ... sheet member 94p ... one end 200 ... liquid storage part 201-206 ... first surface to sixth surface 201s ... second end 201t ... first end DESCRIPTION OF SYMBOLS 208 ... Connection surface 209 ... Corner part 210 ... 1st latching | locking part 220 ... Air chamber 221 ... 2nd latching | locking part 242 ... 1st communication chamber 270 ... Prism unit 271 ... Surface (reflection surface)
275: Permeation surface 277 ... Liquid communication port 280, 280a ... Liquid supply unit 281 ... Peripheral wall 285 ... Supply unit body 288 ... Opening 290 ... Atmospheric inlet 291 ... Sheet member 292 ... Ventilation port 293 ... Pressure receiving plate 294 ... Coil spring 310 ... Communication path 362 ... Mounting part 364 ... Non-mounting part (peripheral part)
364a ... first peripheral edge portion 368 ... sheet central portion 368t ... inclined portion 368v ... first central portion 601 ... wall portion 602 ... cartridge mounting portion (cartridge housing chamber)
603 ... Wall 604 ... Wall 607 ... Partition wall 636 ... Through hole 640 ... Liquid supply pipe 648 ... Elastic member 762 ... Sealing part 764 ... Peripheral part 765 ... Bottom part 766 ... Cap step part 766a ... Convex part 766b ... Opposing part 769 ... Stepped portion L1 ... On line Sp ... Internal chamber

Claims (6)

A cartridge having an opening for supplying liquid to the liquid ejecting apparatus,
An air inlet for introducing air into the cartridge;
A liquid outlet provided in the opening;
A communication port provided in the opening and communicating with the atmosphere introduction port ;
A cap for closing the opening;
The cap is
A concave receiving portion for receiving the liquid outflow portion;
A cartridge comprising: a step having a step raised with respect to the bottom of the receiving portion, the step being configured to inhibit the liquid from flowing from the bottom into the communication port.   The cartridge according to claim 1, wherein the step portion is provided between a position facing the communication port and the bottom portion.   The cartridge according to claim 1, further comprising a liquid absorbent material at a position facing the liquid outflow portion in the cap. A cap for closing an opening of a cartridge for supplying liquid to the liquid ejecting apparatus,
The cartridge includes an atmosphere introduction port for introducing air into the cartridge, a liquid outflow portion provided in the opening, and a communication port provided in the opening and communicating with the atmosphere introduction port. , And
The cap is
In the state of closing the opening, a concave receiving portion for receiving the liquid outflow portion ,
A stepped portion having a step raised with respect to the bottom of the receiving portion, the stepped portion for inhibiting the inflow of the liquid from the bottom to the communication port in a state of closing the opening, cap.   The said level | step-difference part is a cap of Claim 4 provided between the position facing the said communicating port, and the said bottom part.   The cap according to claim 4 or 5, further comprising a liquid absorbent material at a position facing the liquid outflow portion in a state where the opening is closed.

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