Cartridge

Abstract

To provide a technology of a cartridge which enables efficient recycling work.SOLUTION: A cartridge includes: a liquid storage body for storing a liquid; and a housing part connected to the liquid storage body. The liquid storage body includes: a liquid storage part which is formed inside the liquid storage body and contains the liquid; and a liquid supply part which is connected to a liquid introduction part to supply the liquid stored in the liquid storage part to a printer and is a tubular member of which one end portion is in contact with the liquid storage part. The housing part houses a part of the liquid supply part therein and has a bottom wall that is a wall portion facing the printer when the cartridge is mounted in the printer. The bottom wall includes: an opening portion that faces another end portion of the liquid supply part with a gap formed therebetween or that is in contact with the other end portion and forms an opening into which the liquid introduction part is inserted; an exposed surface which is continuous with the opening portion and exposed to the outside; and one or more projecting portions formed on the exposed surface.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a cartridge. [Background technology]

[0002] Conventionally, there are cartridges that include a liquid storage section that stores ink to be supplied to a printer. The cartridge is attached to and detached from the printer. The liquid storage section includes a liquid supply section that supplies ink to the printer. In the cartridge of Patent Document 1, the liquid supply section is housed in an arrangement section that connects to the liquid storage section. The arrangement section has a bottom wall that faces the printer when the cartridge is attached to the printer. The cartridge of Patent Document 1 includes a liquid absorbing member on the bottom wall of the arrangement section. The liquid absorbing member is made of urethane foam, a porous body made of polyvinyl alcohol, a member made of nonwoven fabric, or the like. In the cartridge of Patent Document 1, an opening is formed in the bottom wall of the arrangement section into which the liquid introduction section of the printer is inserted. A part of the liquid absorbing member is exposed from the opening, and the other part is disposed inside the bottom wall. In the cartridge of Patent Document 1, when ink splashes from the liquid introduction section toward the opening during the process of removing the cartridge from the printer, the liquid absorbing member exposed from the opening can capture the ink. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-154024 A Summary of the Invention [Problem to be solved by the invention]

[0004] In order to protect the environment, cartridges may be reused. In order to reuse the cartridge of Patent Document 1, the liquid absorbing member that absorbs the ink must be replaced. In order to replace the liquid absorbing member, the cartridge must be disassembled, which may reduce work efficiency. [Means for solving the problem]

[0005] According to one aspect of the present disclosure, there is provided a cartridge to be mounted on a printing device having a liquid introduction section, the cartridge comprising a liquid container for containing a liquid and a storage section connected to the liquid container, the liquid container being formed inside the liquid container and containing a liquid, and a liquid supply section capable of supplying the liquid contained in the liquid container to the printing device by being connected to the liquid introduction section, the liquid supply section being a cylindrical member having one end in contact with the liquid container, the storage section containing a part of the liquid supply section therein and having a bottom wall which is a wall portion facing the printing device when the cartridge is mounted on the printing device, the bottom wall being opposed to the other end of the liquid supply section with a gap formed therebetween or being an opening in contact with the other end, the bottom wall being an opening forming an opening into which the liquid introduction section is inserted, an exposed surface which is continuous with the opening and exposed to the outside, and one or more protrusions formed on the exposed surface. [Brief description of the drawings]

[0006] [Figure 1] FIG. 1 is a diagram showing the configuration of a printing system according to a first embodiment of the present disclosure. [Diagram 2] FIG. 4 is a diagram illustrating a cartridge mounting portion. [Diagram 3] 13 is a cross-sectional view illustrating a mounted state in which the mounting of the cartridge to the cartridge mounting portion is completed. FIG. [Figure 4] FIG. 2 is a perspective view of a cartridge according to the first embodiment. [Diagram 5] 5 is a perspective view of the cartridge when the cartridge is cut along the VV cross section in FIG. 4. [Figure 6]FIG. 4 is a diagram illustrating a second supply part end portion of the liquid supply part. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] IX-IX cross-sectional view of FIG. 7. [Figure 10] Cross-sectional view taken along line XX in Figure 7. [Figure 11] FIG. 11 is a diagram for explaining an overlap between a first recess and an end hole. [Figure 12] FIG. 4 is an enlarged view of the periphery of the first communicating hole. [Figure 13] 5A to 5C are diagrams illustrating a mounting process, which is a process of mounting the cartridge to the cartridge mounting portion. [Figure 14] FIG. 4 is a diagram illustrating a state in which the cartridge is inserted into the cartridge mounting portion. [Figure 15] 11A and 11B are diagrams illustrating a mounted state in which the mounting of the cartridge to the cartridge mounting portion is completed. [Figure 16] FIG. 11 is a diagram illustrating a cartridge according to a second embodiment. [Figure 17] FIG. 11 is a diagram illustrating a cartridge according to a third embodiment. [Figure 18] FIG. 13 is a diagram illustrating a cartridge according to a fourth embodiment. [Figure 19] FIG. 13 is a diagram showing one of the mountain-shaped convex portions. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] A. First embodiment: A1. Configuration of the first embodiment: FIG. 1 is a diagram showing a configuration of a printing system 1 according to a first embodiment of the present disclosure. In FIG. 1, an X-axis, a Y-axis, and a Z-axis are depicted as three mutually orthogonal spatial axes. The directions in which the arrows of the X-axis, Y-axis, and Z-axis point indicate the positive directions along the X-axis, Y-axis, and Z-axis, respectively. The positive directions along the X-axis, Y-axis, and Z-axis are respectively the +X direction, +Y direction, and +Z direction. The directions opposite to the directions in which the arrows of the X-axis, Y-axis, and Z-axis point are respectively the negative directions along the X-axis, Y-axis, and Z-axis. The negative directions along the X-axis, Y-axis, and Z-axis are respectively the -X direction, -Y direction, and -Z direction. The directions along the X-axis, Y-axis, and Z-axis, regardless of whether they are positive or negative, are respectively denoted as the X direction, the Y direction, and the Z direction. The same applies to the following figures and explanations. The X-axis and the Y axis are axes along a horizontal plane, and the Z axis is an axis along the direction of gravity.

[0008] The printing system 1 performs printing on a print medium PM using ink. In this embodiment, the printing system 1 performs printing using a plurality of inks. The printing system 1 includes a printing device 10 and four cartridges 20. The printing device 10 is an inkjet printer that ejects ink as a liquid to print on a print medium PM. The cartridges 20 can be attached to or detached from the printing device 10. As shown in FIG. 1, the printing device 10 is used while being placed on a horizontal plane. The printing device 10 includes a storage box 11, a cartridge attachment section 12, a carriage 13, an ejection head 14, a tube 15, a drive mechanism 16, and a control section 17.

[0009] The storage box 11 stores the cartridge mounting portion 12, the carriage 13, the ejection head 14, the drive mechanism 16, the control portion 17, and the cartridge 20. The storage box 11 has a substantially rectangular parallelepiped shape. The storage box 11 includes a front cover 110 and a replacement cover 111. The front cover 110 is a portion on which the print medium PM on which printing has been completed is placed. The front cover 110 is provided on the wall on the +Y direction side of the storage box 11. The front cover 110 is a plate-shaped member extending in the X direction and the Y direction. The replacement cover 111 is opened and closed when the user attaches or detaches the cartridge 20 from the cartridge mounting portion 12. The replacement cover 111 is a part of the wall on the +Y direction side of the storage box 11.

[0010] The cartridge 20 is inserted into or removed from the cartridge mounting portion 12 by the user along the Y direction. More specifically, the cartridge 20 is inserted into the cartridge mounting portion 12 by the user in the -Y direction. Also, the cartridge 20 is pulled out of the cartridge mounting portion 12 in the +Y direction by the user. The cartridge mounting portion 12 supplies ink supplied from the cartridge 20 to the ejection head 14 via a tube 15 shown in FIG. 1. The cartridge mounting portion 12 is located inside the storage box 11 on the -Y direction side of the replacement cover 111. In this embodiment, four cartridges 20 can be mounted in the cartridge mounting portion 12.

[0011] Fig. 2 is a diagram illustrating the cartridge mounting portion 12. In Fig. 2, a part of the cartridge mounting portion 12 and the cartridge 20 are not shown. In this embodiment, the user inserts the cartridge 20 into or removes it from the cartridge mounting portion 12 along the Y direction. In detail, the user inserts the cartridge 20 into the cartridge mounting portion 12 in the -Y direction. Also, the user pulls out the cartridge 20 from the cartridge mounting portion 12 in the +Y direction.

[0012] The cartridge mounting section 12 supplies ink supplied from the cartridge 20 to the ejection head 14 via a tube 15 shown in Fig. 1. The cartridge mounting section 12 is located inside the storage box 11 on the -Y direction side of the replacement cover 111. As shown in Fig. 2, the cartridge mounting section 12 includes four liquid introduction sections 121, four liquid storage sections 123, and four apparatus side terminal sections 125. Note that in Fig. 2, each liquid introduction section 121, each liquid storage section 123, and each apparatus side terminal section 125 are each assigned a reference symbol.

[0013] FIG. 3 is a cross-sectional view illustrating a mounting state in which the mounting of the cartridge 20 to the cartridge mounting portion 12 is completed. More specifically, FIG. 3 is a cross section passing through the center of the liquid introduction portion 121 located at the most +X direction side in FIG. 2. Here, the liquid introduction portion 121 will be described with reference to FIG. 3. The liquid introduction portion 121 receives ink supplied from the liquid supply portion 218 of the cartridge 20. The liquid supply portion 218 will be described later. The liquid introduction portion 121 is a cylindrical member. The liquid introduction portion 121 has a flow path therein through which ink flows. The liquid introduction portion 121 is connected to the liquid storage portion 123, and causes the liquid that has flowed through the flow path to flow to the liquid storage portion 123.

[0014] The liquid storage section 123 shown in FIG. 2 stores ink received from the cartridge 20 via the liquid introduction section 121. The liquid storage section 123 communicates with the ejection head 14 via the tube 15 shown in FIG. 1. The device-side terminal section 125 contacts and electrically connects with the circuit board 23 of the cartridge 20 when the cartridge 20 is attached to the cartridge attachment section 12. The circuit board 23 will be described later. The device-side terminal section 125 is electrically connected to the control section 17 in FIG. 1 by wiring (not shown). This enables data communication between the circuit board 23 and the control section 17.

[0015] 1 moves the ejection head 14 relatively to the print medium PM. Specifically, the carriage 13 moves back and forth in the X direction to move the ejection head 14. The ejection head 14 ejects ink toward the print medium PM to print data such as characters and images on the print medium PM. The tube 15 circulates ink in the liquid storage section 123 of the cartridge mounting section 12 to supply the ink to the ejection head 14.

[0016] The drive mechanism 16 moves the carriage 13 back and forth in the X direction based on a control signal from the control unit 17. The drive mechanism 16 includes a timing belt 160 and a drive motor 161. The timing belt 160 transmits the power of the drive motor 161 to the carriage 13. The drive motor 161 rotates the timing belt 160. The control unit 17 controls each unit of the printing device 10 and exchanges signals with the cartridge 20.

[0017] FIG. 4 is a perspective view of the cartridge 20 of the first embodiment. The cartridge 20 contains ink to be supplied to the printing device 10. The cartridge 20 is configured to be mountable to and removable from the printing device 10. As shown in FIG. 1, in this embodiment, four cartridges 20 are mounted to the printing device 10. All four cartridges 20 have the same shape. The cartridge 20 has a substantially rectangular parallelepiped shape. In the cartridge 20, the X direction is the short side direction of the cartridge 20, the Y direction is the long side direction, and the Z direction is the height direction. In the cartridge 20, the long side dimension is the largest and the short side dimension is the smallest. As shown in FIG. 4, the cartridge 20 includes a cartridge body 21 and a circuit board 23.

[0018] FIG. 5 is a perspective view of the cartridge 20 when the cartridge 20 is cut along the VV cross section of FIG. 4. As shown in FIG. 4, the cartridge body 21 includes a liquid container 210 and a container section 220. The liquid container 210 contains ink, which is a liquid. The liquid container 210 has a substantially rectangular shape. The liquid container 210 is formed by injection molding using polypropylene as a material. As shown in FIG. 4 and FIG. 5, the liquid container 210 includes a front wall 211, a rear wall 212, an upper wall 213, a container bottom wall 214, a first side wall 215, a second side wall 216, a liquid container section 217, and a liquid supply section 218. The front wall 211 forms a wall portion of the liquid container 210 on the -Y direction side. The rear wall 212 forms a wall portion of the liquid container 210 on the +Y direction side. The rear wall 212 faces the front wall 211 in the Y direction. The upper wall 213 forms a wall portion on the +Z direction side of the liquid container 210. The container bottom wall 214 forms a wall portion on the -Z direction side of the liquid container 210. The container bottom wall 214 faces the upper wall 213 in the Z direction. The first side wall 215 forms a wall portion on the -X direction side of the liquid container 210. The second side wall 216 forms a wall portion on the +X direction side of the liquid container 210. The second side wall 216 faces the first side wall 215 in the X direction. The liquid container section 217 shown in FIG. 5 contains ink. The liquid container section 217 is formed inside the liquid container 210.

[0019] The liquid supply unit 218 can cause the ink in the liquid storage unit 217 to flow into the printing device 10. Specifically, as shown in FIG. 3, the liquid supply unit 218 is connected to the liquid introduction unit 121 of the cartridge mounting unit 12, and can supply the ink stored in the liquid storage unit 217 to the ejection head 14 of the printing device 10 shown in FIG. 1 through the liquid introduction unit 121. As shown in FIG. 3, the liquid supply unit 218 is connected to the liquid introduction unit 121 when the cartridge 20 is mounted in the cartridge mounting unit 12. The liquid supply unit 218 is a cylindrical member. The liquid supply unit 218 is provided with a valve mechanism that opens when the liquid introduction unit 121 is inserted into the storage opening 225i, which is an opening of the storage unit 220, and closes when the liquid introduction unit 121 is not inserted into the storage opening 225i. The storage opening 225i will be described later. Although not shown, the liquid supply unit 218 has a packing on the inside. When liquid introduction part 121 is inserted, the packing seals the gap between liquid introduction part 121 and liquid supply part 218. This makes it possible to prevent ink inside liquid storage part 217 from leaking from between liquid supply part 218 and liquid introduction part 121.

[0020] FIG. 6 is a diagram for explaining the second supply part end 218b of the liquid supply part 218. Hatching is omitted in FIG. 6. In FIG. 6, the liquid container 210 and a part of the liquid supply part 218 in FIG. 5 are omitted. As shown in FIG. 5, the liquid supply part 218 has one end, the first supply part end 218a, in contact with the liquid storage part 217. As shown in FIG. 6, the liquid supply part 218 has the other end, the second supply part end 218b, in contact with the inner wall surface 225c of the storage bottom wall 225 of the storage part 220 and the storage opening 225a continuous with the inner wall surface 225c. The storage bottom wall 225, the storage opening 225a, and the inner wall surface 225c of the storage part 220 will be described later. As shown in Fig. 6, the second supply end 218b includes an end opening 218ba, two end grooves 218bb, two end holes 218bc, six end second grooves 218bd, and six end second holes 218be. Note that the two end second grooves 218bd and the two end second holes 218be are not shown in Fig. 6.

[0021] As shown in Fig. 6, end opening 218ba forms end opening 218c, which is an opening for leading ink from liquid storage portion 217 to the outside. End opening 218c passes through central axis CA of liquid supply portion 218. As shown in Fig. 3, end opening 218c receives liquid introduction portion 121 that has passed through storage opening 225i into liquid supply portion 218. Via liquid introduction portion 121, ink from liquid storage portion 217 is led to printing device 10, which is outside cartridge 20.

[0022] The end groove 218bb shown in FIG. 6 is a portion through which leaked ink flows when ink leaks from between the packing of the liquid supply unit 218 (not shown) and the liquid introduction unit 121. The liquid supply unit 218 is formed so that ink flows into the end groove 218bb when ink leaks from between the packing of the liquid supply unit 218 and the liquid introduction unit 121. The end groove 218bb is formed continuously with the end opening 218ba. The end groove 218bb has two steps ST formed from the end opening 218c side toward the outer periphery of the second supply unit end 218b. Specifically, steps are formed so as to descend in the -Z direction from the end opening 218c side toward the outer periphery of the second supply unit end 218b. In a state in which the cartridge 20 is disposed so that the second supply section end 218b is vertically below the first supply section end 218a shown in Fig. 5, if ink leaks between the packing and the liquid introduction section 121, the end groove 218bb is formed so that the ink flows vertically downward as shown in Fig. 6. In this embodiment, two end grooves 218bb are formed.

[0023] The end hole 218bc is a hole formed in the end groove 218bb. More specifically, the end hole 218bc is a hole formed at the end of the end groove 218bb. The end hole 218bc is formed at a position close to the outer periphery of the second supply part end 218b with respect to the end opening 218c. The end hole 218bc penetrates the second supply part end 218b in the Z direction. In a state in which the cartridge 20 is arranged so that the second supply part end 218b is vertically below the first supply part end 218a, when ink flows through the end groove 218bb, the end hole 218bc can cause the ink to flow out to the outside of the liquid supply part 218. In this embodiment, when projected in the direction A, which is the direction from the exposed surface 225b toward the inner wall surface 225c, the end hole 218bc overlaps with the first recess 225d or the second recess 225e of the accommodation bottom wall 225. The overlap between the end hole 218bc and the first recess 225d or the second recess 225e, and the exposed surface 225b will be described later.

[0024] The end second groove 218bd has a similar configuration to the end groove 218bb. The end second hole 218be is a hole formed in the end second groove 218bd. The end second hole 218be has a similar configuration to the end hole 218bc. The end second hole 218be differs from the end hole 218bc in that it does not overlap with the first recess 225d or the second recess 225e of the housing bottom wall 225 when projected in the direction A, which is the direction from the exposed surface 225b toward the inner wall surface 225c.

[0025] As shown in FIG. 5, the storage section 220 stores a part of the liquid supply section 218 therein. The storage section 220 is connected to the liquid storage section 217. In this embodiment, the storage section 220 is connected to the liquid storage section 217 by fitting. The storage section 220 has a substantially rectangular parallelepiped shape with an opening on the +Z direction side. The storage section 220 is molded by injection molding using polypropylene as a material. As shown in FIG. 4, the storage section 220 includes a storage front wall 221, a storage rear wall 222, a first storage side wall 223, a second storage side wall 224, and a storage bottom wall 225.

[0026] The storage front wall 221 forms a wall portion on the -Y direction side of the storage portion 220. The storage rear wall 222 forms a wall portion on the +Y direction side of the storage portion 220. The storage rear wall 222 faces the storage front wall 221 in the Y direction. The first storage side wall 223 forms a wall portion on the -X direction side of the storage portion 220. The first storage side wall 223 intersects with the storage bottom wall 225 and extends in the Y direction, which is the longitudinal direction of the storage portion 220. The first storage side wall 223 extends from the storage bottom wall 225 toward the liquid storage body 210. The second storage side wall 224 faces the first storage side wall 223 in the X direction, which is the short side direction of the storage portion 220. The second storage side wall 224 intersects with the storage bottom wall 225 and extends in the Y direction, which is the longitudinal direction of the storage portion 220.

[0027] FIG. 7 is a diagram for explaining the storage bottom wall 225. FIG. 7 is a diagram in which a part of FIG. 4 is enlarged. FIG. 8 is a diagram for explaining the inner wall surface 225c. In FIG. 8, the liquid storage body 210 is omitted. As shown in FIG. 3, the storage bottom wall 225 is a wall portion that faces the printing device 10 when the cartridge 20 is mounted in the cartridge mounting portion 12 of the printing device 10. Mounting of the cartridge 20 to the printing device 10 will be described later. As shown in FIG. 4, the storage bottom wall 225 forms a wall portion on the -Z direction side of the storage portion 220. The storage bottom wall 225 is formed of a single material. In this embodiment, the storage bottom wall 225 is formed of polypropylene. 7 and 8, the housing bottom wall 225 includes a housing opening 225a, an exposed surface 225b, an inner wall surface 225c, two recesses, a first recess 225d and a second recess 225e, two communication holes, a first communication hole 225f and a second communication hole 225g, and a plurality of protrusions 225h. In FIG. 7, the first communication hole 225f and the second communication hole 225g are shown painted black.

[0028] The storage opening 225a forms a storage opening 225i, which is an opening into which the liquid introduction part 121 of the printing device 10 is inserted. The storage opening 225a is formed continuously with the exposed surface 225b. The storage opening 225a has a substantially circular shape when viewed in the Z direction. As shown in FIG. 3, when the cartridge 20 is mounted on the printing device 10, the liquid introduction part 121 is inserted into the storage opening 225i and received in the end opening 218c of the liquid supply part 218, thereby connecting the liquid introduction part 121 and the liquid supply part 218.

[0029] The exposed surface 225b shown in FIG. 7 is a surface of the housing bottom wall 225 on which a plurality of convex portions 225h are formed. The exposed surface 225b is continuous with the housing opening 225a. The exposed surface 225b is a part of the surface of the housing bottom wall 225 that is exposed to the outside. Here, the surface of the housing bottom wall 225 that is exposed to the outside, other than the exposed surface 225b and the surface of the housing opening 225a, is referred to as the discontinuous surface 225j. In this embodiment, a step ST2 is formed between the exposed surface 225b and the discontinuous surface 225j. When viewed in the X and Y directions, the exposed surface 225b is formed on the +Z direction side of the part of the discontinuous surface 225j that is continuous with the step ST2.

[0030] Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 7. In Fig. 9, the illustration of the cartridge 20 is simplified. Fig. 9 is also a view for explaining the position of the exposed surface 225b. In this embodiment, as shown in Fig. 9, the exposed surface 225b is formed at a position closer to the second supply part end 218b than the opening tip 225aa, which is the part of the storage opening 225a that is the farthest from the second supply part end 218b of the liquid supply part 218.

[0031] FIG. 10 is a cross-sectional view taken along the line XX in FIG. 7. FIG. 11 is a view for explaining the overlap between the first recess 225d and the end hole 218bc. FIG. 11 is a view of the non-sectional view of FIG. 6 from a different angle, and is also a view showing a part of the liquid supply unit 218 in FIG. 8. The inner wall surface 225c shown in FIG. 10 is the surface opposite to the exposed surface 225b in the Z direction, and is the surface of the housing bottom wall 225 that is not exposed to the outside. As shown in FIG. 6, the inner wall surface 225c is in contact with the second supply unit end 218b of the liquid supply unit 218. The first recess 225d shown in FIG. 8 is a portion that holds the ink that flows in from the exposed surface 225b through the first communication hole 225f. As shown in FIG. 6 and FIG. 11, when projected in the direction A from the exposed surface 225b toward the inner wall surface 225c, one of the end holes 218bc of the liquid supply unit 218 overlaps with the first recess 225d. The first recess 225d is located on the +X direction side with respect to the second recess 225e. As shown in FIG. 8 and FIG. 10, the first recess 225d is continuous with the first communication hole 225f. The first recess 225d is formed in the inner wall surface 225c. In this embodiment, as shown in FIG. 10, the first recess 225d is recessed toward the exposed surface 225b. As shown in FIG. 8, the first recess 225d extends along the inner wall surface 225c. In this embodiment, the first recess 225d extends along the Y direction.

[0032] The second recess 225e has a similar configuration to the first recess 225d. The differences from the first recess 225d will be described below. As shown in FIG. 8, the second recess 225e is connected to the second communication hole 225g. The second recess 225e has a shape symmetrical to the first recess 225d in the Y direction. In this embodiment, as shown in FIG. 6 and FIG. 11, when projected in the direction A from the exposed surface 225b toward the inner wall surface 225c, one of the end holes 218bc of the liquid supply section 218 overlaps with the second recess 225e.

[0033] The first communication hole 225f shown in FIG. 7 communicates between the exposed surface 225b and the inner wall surface 225c. The first communication hole 225f allows ink to flow in. The first communication hole 225f is continuous with a part of the plurality of convex portions 225h and the first concave portion 225d. The part of the plurality of convex portions 225h will be described later. The second communication hole 225g has a similar configuration to the first communication hole 225f. The following describes the differences from the first communication hole 225f. The second communication hole 225g is continuous with a part of the plurality of convex portions 225h and the second concave portion 225e. The convex portion 225h to which the second communication hole 225g is continuous is different from the convex portion 225h to which the first communication hole 225f is continuous.

[0034] FIG. 12 is an enlarged view of the periphery of the first communication hole 225f. In FIG. 12, one of the three convex portions 225h connected to the first communication hole 225f is omitted for ease of understanding. The multiple convex portions 225h shown in FIG. 7 are capable of holding ink. The multiple convex portions 225h are formed on the exposed surface 225b. In this embodiment, the multiple convex portions 225h are positioned at intervals from each other on the exposed surface 225b. As shown in FIG. 9, in this embodiment, each of the multiple convex portions 225h is formed so as to be positioned on the +Z direction side with respect to the opening tip portion 225aa of the storage opening 225a. In this embodiment, the multiple convex portions 225h have a substantially rectangular shape. Note that not all of the multiple convex portions 225h have the same shape. As shown in FIG. 7, the convex portion 225h in contact with the storage opening 225a has a shape that follows the outer periphery of the storage opening 225a. Moreover, the convex portion 225h that contacts the step ST2 between the exposed surface 225b and the discontinuous surface 225j has a shape that conforms to the step ST2.

[0035] As shown in FIG. 7, in this embodiment, three convex portions 225h, which are some of the convex portions 225h among the multiple convex portions 225h, are connected to the first communication hole 225f. As shown in FIG. 12, the convex portion 225h connected to the first communication hole 225f is referred to as a hole-connecting convex portion 225ha. In this embodiment, the corner of the hole-connecting convex portion 225ha is connected to the corner of the first communication hole 225f. As shown in FIG. 12, each of the hole-connecting convex portions 225ha has an inclined surface 225hb. As shown in FIG. 10, the inclined surface 225hb is inclined with respect to the direction A from the exposed surface 225b toward the inner wall surface 225c. The convex portion 225h connected to the second communication hole 225g shown in FIG. 7 also has the same configuration as the hole-connecting convex portion 225ha.

[0036] Circuit board 23 shown in Fig. 4 has cartridge-side terminals 231 arranged thereon, which come into contact with device-side terminal portions 125 of cartridge mounting portion 12 shown in Fig. 2. Circuit board 23 is provided at a corner portion where housing front wall 221 and housing bottom wall 225 shown in Fig. 4 intersect. The corner portion is a concave portion recessed toward the inside of housing portion 220.

[0037] A2. Cartridge 20 installation process, installation status and removal instructions: FIG. 13 is a diagram for explaining the mounting process, which is a process of mounting the cartridge 20 to the cartridge mounting section 12. FIG. 14 is a diagram showing a state in which the cartridge 20 is inserted into the cartridge mounting section 12. FIG. 15 is a diagram for explaining a mounting state in which the mounting of the cartridge 20 to the cartridge mounting section 12 is completed. The mounting process is composed of a terminal connection process and a supply unit connection process. The terminal connection process is a process in which the cartridge 20 is moved in the -Y direction by the user from the state shown in FIG. 13 to the state shown in FIG. 14, and is inserted into the cartridge mounting section 12, thereby electrically connecting the cartridge mounting section 12 and the cartridge 20. The supply unit connection process is a process in which the liquid introduction section 121 of the cartridge mounting section 12 is connected to the liquid supply section 218 of the cartridge 20 in a state in which the cartridge mounting section 12 and the cartridge 20 are electrically connected. Specifically, in the supply unit connection process, the user rotates the cartridge 20 from the state in Figure 14 around the rotation fulcrum RF of the cartridge mounting unit 12 shown in Figure 3 in the direction indicated by arrow B, thereby connecting the liquid introduction unit 121 and the liquid supply unit 218. This completes the mounting of the cartridge 20 into the cartridge mounting unit 12 as shown in Figure 15. To remove the cartridge 20, the user pushes up the cartridge 20 in the direction opposite to the direction of arrow B, and then pulls out the cartridge in the +Y direction.

[0038] A3. Description of ink adhesion to exposed surface 225b and protruding portion 225h: When the cartridge 20 is removed, the liquid supply unit 218 is pushed up in the opposite direction to the direction of arrow B in Fig. 14 as the cartridge 20 is pushed up. As the liquid supply unit 218 is pushed up, the liquid introduction unit 121 of the printing device 10 is pushed up, and ink may splash vertically upward from the liquid introduction unit 121. In this case, it is considered that the ink is more likely to splash toward the exposed surface 225b that is continuous with the storage opening 225a than toward the surfaces of the storage bottom wall 225 other than the exposed surface 225b.

[0039] In this embodiment, as shown in Fig. 7, a plurality of convex portions 225h are formed on the exposed surface 225b. When ink scattered toward the exposed surface 225b adheres to the exposed surface 225b, the ink is sucked up by the edges of the surrounding convex portions 225h due to capillary force and is held thereon. In addition, when the cartridge 20 is moved by the user, the ink adhering to the exposed surface 225b flows along the exposed surface 225b where the convex portions 225h are not formed, and flows into the recesses of the inner wall surface 225c through the first communication hole 225f or the second communication hole 225g, whereby the ink is held thereon.

[0040] In this embodiment, when ink runs down the exposed surface 225b, there is a possibility that the ink will adhere to the hole-connected convex portion 225ha connected to the first communicating hole 225f shown in FIG. 12. At this time, the inclined surface 225hb of the hole-connected convex portion 225ha, which is inclined with respect to the direction A from the exposed surface 225b toward the inner wall surface 225c, makes the capillary force of the edge of the first communicating hole 225f greater than the capillary force of the inclined surface 225hb of the hole-connected convex portion 225ha. This allows the ink on the exposed surface 225b side to efficiently flow into the first communicating hole 225f and move to the inner wall surface 225c. The same is true for the second communicating hole 225g and the convex portion 225h connected to the second communicating hole 225g.

[0041] In this embodiment, even if liquid splashes from the liquid introduction portion 121 around the periphery of the storage opening 225a when the cartridge 20 is removed from the printing device 10, the liquid adheres to the edges of the multiple protrusions 225h, allowing the cartridge 20 to retain the liquid. Compared to cartridges 20 that use, for example, a porous body or nonwoven fabric as a liquid absorbing member to which the liquid adheres, when reusing the cartridge 20, the cartridge 20 can be washed to remove the liquid, and therefore there is no need to disassemble the cartridge 20.

[0042] In this embodiment, the exposed surface 225b is formed at a position closer to the second supply part end 218b than the portion of the storage opening 225a that is the furthest from the second supply part end 218b, which is the other end of the liquid supply part 218. Compared to the embodiment in which the exposed surface 225b is formed at the same position as or farther from the second supply part end 218b than the portion that is the furthest from the second supply part end 218b, it is possible to prevent the liquid adhering to the convex part 225h or the exposed surface 225b from moving and flowing into the storage opening 225a when the cartridge 20 is moved by an operator.

[0043] Furthermore, in this embodiment, each of the multiple protrusions 225h is formed to be located on the +Z direction side with respect to the opening tip 225aa of the storage opening 225a. For example, when the storage portion 220 is placed on a work table so that it is vertically below the liquid storage body 210, it is possible to prevent ink from adhering to the work table.

[0044] In this embodiment, when the liquid adhering to the convex portion 225h or the exposed surface 225b moves toward the inner wall surface 225c through the first communication hole 225f or the second communication hole 225g and flows into the first recess 225d or the second recess 225e, the ink is likely to spread to the inner wall surface 225c along the first recess 225d or the second recess 225e extending along the inner wall surface 225c. Compared to a mode not including the first communication hole 225f or the second communication hole 225g and not including the first recess 225d or the second recess 225e on the inner wall surface 225c, the amount of ink held by the containing bottom wall 225 can be increased.

[0045] In this embodiment, the end hole 218bc and the first recess 225d overlap, and the end hole 218bc and the second recess 225e overlap. For example, when liquid adhering to the end opening 218ba flows into the end hole 218bc, the liquid that flows into the end hole 218bc flows into the first recess 225d and the second recess 225e, so that the first recess 225d and the second recess 225e can hold ink. Therefore, it is possible to prevent ink from leaking out of the cartridge 20 from the end opening 218c formed by the end opening 218ba of the liquid supply part 218.

[0046] In the present embodiment, when ink adheres to the hole-connecting convex portion 225ha, the ink flows easily along the inclined surface 225hb into the first communication hole 225f and the second communication hole 225g, compared to a case where the hole-connecting convex portion 225ha does not have the inclined surface 225hb. This makes it possible to increase the amount of ink held by the storage bottom wall 225, compared to a case where the hole-connecting convex portion 225ha does not have the inclined surface 225hb.

[0047] B. Second embodiment: 16 is a diagram illustrating a cartridge 20 of a second embodiment. The second embodiment differs from the first embodiment in the shape of the convex portion formed on the exposed surface 225b and in that the storage bottom wall 225 does not include the first communication hole 225f, the second communication hole 225g, the first recess 225d, and the second recess 225e. Since the other configurations are the same as those of the first embodiment, detailed descriptions are omitted and the same reference numerals are used.

[0048] In the second embodiment, the storage bottom wall 225 of the storage section 220 has linear convex portions 225hB, which are linear convex portions. As shown in Fig. 16, the linear convex portions 225hB are formed on the exposed surface 225b at intervals in the Y direction. The linear convex portions 225hB are arranged on the exposed surface 225b along the X direction, which is a predetermined direction. The linear convex portions 225hB each extend in the X direction.

[0049] In the second embodiment, the same effect as in the first embodiment is obtained. That is, even if ink splashes from the liquid introduction portion 121 when the cartridge 20 is removed from the printing device 10, the liquid adheres to the edge of the linear convex portion 225hB, so that the cartridge 20 can hold the ink. Compared to a cartridge 20 in which a porous body or nonwoven fabric is used as a liquid absorbing member to which ink adheres, the cartridge 20 can be washed to remove the ink when the cartridge 20 is reused, so there is no need to disassemble the cartridge 20.

[0050] C. Third embodiment: 17 is a diagram illustrating a cartridge 20 of a third embodiment. The third embodiment is different from the second embodiment in the shape of the convex portion formed on the exposed surface 225b. Since the other configurations are the same as those of the second embodiment, detailed description will be omitted and the same reference numerals will be used.

[0051] In the third embodiment, the storage bottom wall 225 includes a continuous convex portion 225hC, which is one convex portion. The continuous convex portion 225hC is a convex portion formed in a mesh shape on the exposed surface 225b. A part of the exposed surface 225b is exposed to the outside due to the mesh of the continuous convex portion 225hC. The continuous convex portion 225hC is formed such that the surface of the continuous convex portion 225hC that is closest to the -Z direction is located on the +Z direction side of the opening tip portion 225aa of the storage opening 225a. The continuous convex portion 225hC has a shape that conforms to the storage opening 225a at a portion that contacts the outer periphery of the storage opening 225a. The continuous convex portion 225hC has a shape that conforms to the step ST2 at a portion that contacts the step ST2 between the exposed surface 225b and the discontinuous surface 225j.

[0052] The third embodiment produces the same effect as the first embodiment. That is, even if ink splashes from the liquid introduction portion 121 when the cartridge 20 is removed from the printing device 10, the liquid adheres to the edges of the mesh of the continuous convex portion 225hC, and the cartridge 20 can retain the ink. Compared to a cartridge 20 in which a porous body or nonwoven fabric is used as a liquid absorbing member to which ink adheres, the cartridge 20 can be washed to remove the ink when the cartridge 20 is reused, and therefore the cartridge 20 does not need to be disassembled.

[0053] D. Fourth embodiment: 18 is a diagram illustrating a cartridge 20 according to a fourth embodiment. The fourth embodiment is different from the second embodiment in the shape of the convex portion formed on the exposed surface 225b. The other configurations are the same as those of the second embodiment, so detailed descriptions are omitted and the same reference numerals are used. In the fourth embodiment, the storage bottom wall 225 includes a mountain-shaped convex portion 225hD and a non-mountain-shaped convex portion 228.

[0054] FIG. 19 is a diagram showing one of the mountain-shaped protrusions 225hD. For ease of understanding, FIG. 19 shows the exposed surface 225b. As shown in FIG. 18, in the fourth embodiment, the housing bottom wall 225 has a plurality of mountain-shaped protrusions 225hD, which are a plurality of protrusions. The plurality of mountain-shaped protrusions 225hD are formed on the exposed surface 225b. As shown in FIG. 19, each of the plurality of mountain-shaped protrusions 225hD is formed by a plurality of surfaces. The plurality of surfaces include four connection surfaces 226 and two non-connection surfaces 227. The connection surface 226 is a surface that connects with the exposed surface 225b. The two non-connection surfaces 227 are surfaces that connect with parts of the four connection surfaces 226. The two non-connection surfaces 227 are inclined with respect to the exposed surface 225b, and one side of each of them is connected to each other.

[0055] The non-mountain-shaped protrusions 228 are capable of holding ink. As shown in FIG. 18, in this embodiment, a plurality of non-mountain-shaped protrusions 228 are formed in contact with the outer periphery of the storage opening 225a and the step ST2 between the exposed surface 225b and the discontinuous surface 225j. The non-mountain-shaped protrusions 228 are formed from a plurality of faces connected to the exposed surface 225b and one or more faces connected to the faces connected to the exposed surface 225b. The one or more faces connected to the faces connected to the exposed surface 225b are inclined with respect to the exposed surface 225b. The plurality of non-mountain-shaped protrusions 228 have a shape that conforms to the outer periphery of the storage opening 225a and the step ST2.

[0056] The fourth embodiment produces the same effect as the first embodiment. That is, even if ink splashes from the liquid introduction section 121 when the cartridge 20 is removed from the printing device 10, the liquid adheres to the edge of the mountain-shaped convex section 225hD, and the cartridge 20 can retain the ink. Compared to a cartridge 20 in which a porous body or nonwoven fabric is used as a liquid absorbing member to which ink adheres, the cartridge 20 can be washed to remove the ink when the cartridge 20 is reused, and therefore the cartridge 20 does not need to be disassembled.

[0057] E. Other embodiments: E1. Alternative embodiment 1: (1) In the first embodiment, a plurality of protrusions 225h are formed on the housing bottom wall 225. For example, a single protrusion may be formed on the housing bottom wall.

[0058] (2) In the above embodiment, the liquid container 210 and the storage portion 220 are formed by injection molding using polypropylene as a material. The liquid container and the storage portion may each be formed from a synthetic resin other than polypropylene. The storage portion is formed from a material other than a porous body or a nonwoven fabric.

[0059] (3) In the above embodiment, the liquid container 210 and the storage portion 220 are each formed separately by injection molding. For example, the liquid container and the storage portion may be integrally formed by injection molding, so that the liquid container and the storage portion are connected to each other.

[0060] (4) In the above embodiment, the second supply part end 218b, which is the other end of the liquid supply part 218, is in contact with the inner wall surface 225c of the storage bottom wall 225 of the storage part 220 and the storage opening 225a that is continuous with the inner wall surface 225c. The second supply part end of the liquid supply part may not be in contact with the inner wall surface and the storage opening. The storage opening and the inner wall surface may face the other end of the liquid supply part with a gap formed therebetween. In an embodiment in which the storage opening and the inner wall surface face the other end of the liquid supply part with a gap formed therebetween and the end hole and the recess overlap, for example, when the liquid adhering to the end opening flows into the end hole, the liquid that has flowed into the end hole flows into the recess, so that the recess can hold the liquid. This makes it possible to suppress ink from leaking out of the cartridge from the end opening formed by the end opening of the liquid supply part.

[0061] E2. Alternative embodiment 2: In the above embodiment, the exposed surface 225b is formed at a position closer to the second supply unit end 218b than the portion of the accommodation opening 225a that is the furthest from the second supply unit end 218b. For example, when viewed in the X direction or the Y direction, the exposed surface may be formed so as to be at the same position in the Z direction as the portion of the accommodation opening that is the furthest from the second supply unit end.

[0062] E3. Alternative embodiment 3: (1) In the first embodiment, the first communication hole 225f, the second communication hole 225g, the first recess 225d, and the second recess 225e are formed in the storage bottom wall 225. For example, the storage bottom wall may have one communication hole and one recess connected to the communication hole. For example, the storage bottom wall may not have a communication hole and a recess.

[0063] (2) For example, the accommodating bottom wall 225 may include, in addition to the first communication hole 225f and the second communication hole 225g, communication holes formed at positions on the exposed surface 225b different from the first communication hole 225f and the second communication hole 225g. For example, the accommodating bottom wall may include a third communication hole located on the +Y direction side of the first communication hole and a fourth communication hole located on the +Y direction side of the second communication hole, the first communication hole and the third communication hole continuing to the first recess, and the second communication hole and the fourth communication hole continuing to the second recess.

[0064] (3) In a mode in which a plurality of communication holes are formed in the bottom wall, a plurality of recesses corresponding to and continuing from each of the communication holes may be formed in the bottom wall.

[0065] (4) In the above embodiment, the first recess 225d and the second recess 225e extend along the inner wall surface 225c. For example, in an embodiment in which the recess has a circular shape, the recess does not have to have a shape that extends along the inner wall surface.

[0066] E4. Alternative embodiment 4: (1) In the first embodiment, the liquid supply unit 218 includes an end groove 218bb formed continuously with the end opening 218ba, and an end hole 218bc. For example, in a mode in which the storage bottom wall does not include a recess, the liquid supply unit does not need to include an end groove and an end hole.

[0067] (2) In the first embodiment, the end hole 218bc overlaps with the first recess 225d or the second recess 225e. For example, a part of the end hole may overlap with a part of the recess. In addition, in an aspect in which the liquid supply portion has an end hole and the storage bottom wall has a recess, the end hole and the recess do not have to overlap.

[0068] (3) In the first embodiment, end second holes 218be that do not overlap with first recesses 225d or second recesses 225e are formed in liquid supply portion 218. For example, in an aspect in which recesses are formed over a wider area on the inner wall surface than in the first embodiment, at least a portion of each of all holes formed in the grooves formed in the liquid supply portion may overlap at least a portion of the recesses.

[0069] E5. Alternative embodiment 5: (1) In the first embodiment, among the plurality of protrusions 225h, the hole connecting protrusion 225ha connecting to the first communication hole 225f has an inclined surface 225hb inclined with respect to the direction A from the exposed surface 225b toward the inner wall surface 225c. For example, in a mode in which the storage bottom wall does not have a communication hole, a protrusion having an inclined surface does not need to be formed on the storage bottom wall.

[0070] (2) In the first embodiment, the corners of the hole-connecting convex portion 225ha are continuous with the corners of the first communicating hole 225f. For example, the hole-connecting convex portion may be continuous with the communicating hole such that the sides of the hole-connecting convex portion match with the sides of the communicating hole. For example, the hole-connecting convex portion may be continuous with the communicating hole such that a part of the side of the hole-connecting convex portion matches with a part of the side of the communicating hole. In this embodiment as well, the capillary force of the edge of the communicating hole is greater than the capillary force of the inclined surface of the hole-connecting convex portion. This allows the ink on the exposed surface side to flow efficiently into the first communicating hole and transfer to the inner wall surface.

[0071] E6. Alternative Embodiment 6: In the first embodiment, a plurality of protrusions 225h are formed on the exposed surface 225b at intervals from each other. For example, among the plurality of protrusions, the corners of some of the protrusions may be in contact with each other.

[0072] E7. Alternative Embodiment 7: (1) In the second embodiment, each of the linear protrusions 225hB is arranged along the X direction, which is the predetermined direction A. For example, each of the linear protrusions may be arranged along the Y direction.

[0073] (2) In the second embodiment, the storage bottom wall 225 does not include a communication hole and a recess. For example, one or more communication holes that communicate between the exposed surface and the inner wall surface may be formed between two of the linear protrusions, and one or more recesses that are continuous with the communication holes and recessed toward the exposed surface may be formed on the inner wall surface. In this embodiment, when ink attached to the protrusions or exposed surface moves to the inner wall surface side through the communication hole and flows into the recess, the ink is likely to spread on the inner wall surface along the recess extending along the inner wall surface. Compared to an embodiment without a communication hole and without a recess formed on the inner wall surface, the amount of liquid that the bottom wall can hold can be increased.

[0074] (3) In this embodiment, the linear protrusion continuing into the communicating hole may have an inclined surface that is inclined in the direction from the exposed surface toward the inner wall surface.

[0075] E8. Alternative Embodiment 8: In the third embodiment, the storage bottom wall 225 does not include a communication hole and a recess. For example, a continuous hole may be formed in the exposed surface portion exposed by the mesh of the continuous protrusions, and a recess connected to the continuous hole may be formed in the inner wall surface. In this embodiment, when ink attached to the protrusions or exposed surface moves to the inner wall surface side through the communication hole and flows into the recess, the ink is likely to spread on the inner wall surface along the recess extending along the inner wall surface. Compared with an embodiment in which the bottom wall does not include a communication hole and a recess is not formed on the inner wall surface, the amount of liquid held by the bottom wall can be increased. Also, in this embodiment, the continuous protrusion connected to the communication hole may have an inclined surface inclined with respect to the direction from the exposed surface toward the inner wall surface.

[0076] E9. Alternative Embodiment 9: (1) In the fourth embodiment, the storage bottom wall 225 does not include a communication hole and a recess. For example, a communication hole that communicates between the exposed surface and the inner wall surface may be formed between some of the adjacent protrusions of the storage bottom wall. In this aspect, when ink adhering to the protrusions or exposed surface moves to the inner wall surface side through the communication hole and flows into the recess, the ink is likely to spread on the inner wall surface along the recess extending along the inner wall surface. Compared to an aspect in which the storage bottom wall does not include a communication hole and no recess is formed on the inner wall surface, the amount of liquid that the bottom wall can hold can be increased.

[0077] (2) Adjacent mountain-shaped protrusions may be spaced apart from each other or may be in contact with each other.

[0078] F. Other forms: The present disclosure is not limited to the above-mentioned embodiment, and can be realized in various forms without departing from the spirit of the present disclosure. For example, the present disclosure can be realized in the following forms. The technical features in the above-mentioned embodiments corresponding to the technical features in each form described below can be appropriately replaced or combined in order to solve some or all of the problems of the present disclosure, or to achieve some or all of the effects of the present disclosure. Furthermore, if the technical feature is not described as essential in this specification, it can be appropriately deleted.

[0079] (1) According to one aspect of the present disclosure, there is provided a cartridge to be mounted on a printing device having a liquid introduction section, the cartridge comprising a liquid container for containing a liquid and a storage section connected to the liquid container, the liquid container being formed inside the liquid container and containing a liquid, and a liquid supply section capable of supplying the liquid contained in the liquid container to the printing device by being connected to the liquid introduction section, the liquid supply section being a cylindrical member having one end in contact with the liquid container, the storage section containing a part of the liquid supply section inside, the bottom wall being a wall section facing the printing device when the cartridge is mounted on the printing device, the bottom wall being opposed to the other end of the liquid supply section with a gap formed therebetween, or an opening section in contact with the other end section, the bottom wall being an opening section forming an opening into which the liquid introduction section is inserted, an exposed surface continuous with the opening section and exposed to the outside, and one or more protrusions formed on the exposed surface. According to this form of cartridge, even if liquid splashes from the liquid introduction portion around the opening when the cartridge is removed from the printing device, the liquid adheres to the edge of the convex portion, so that the cartridge can retain the liquid. Compared to cartridges that use, for example, a porous body or nonwoven fabric as a liquid absorbing member to which the liquid adheres, when reusing the cartridge, the liquid can be removed by washing the cartridge, so there is no need to disassemble the cartridge.

[0080] (2) In the cartridge of the above aspect, the exposed surface may be formed at a position closer to the other end of the liquid supply portion compared to a portion of the opening that is furthest from the other end of the liquid supply portion. With this form of cartridge, compared to an embodiment in which the exposed surface is formed at the same position as or farther from the other end of the liquid supply section than the part of the opening that is furthest from the other end of the liquid supply section, it is possible to prevent liquid adhering to the convex portion or exposed surface from moving and flowing into the opening when the cartridge is moved by an operator.

[0081] (3) In a cartridge of the above form, the bottom wall may further include an inner wall surface that is the surface opposite to the exposed surface, a communication hole that connects the exposed surface to the inner wall surface, and a recess in the inner wall surface that is continuous with the communication hole and is recessed toward the exposed surface, extending along the inner wall surface. In this form of cartridge, when liquid adhering to the protrusion or exposed surface moves toward the inner wall surface through the communication hole and flows into the recess, the liquid is likely to spread along the inner wall surface along the recess that extends along the inner wall surface, and the amount of liquid that can be held by the bottom wall can be increased compared to a form that does not have a communication hole and does not have a recess formed on the inner wall surface.

[0082] (4) In a cartridge of the above form, the other end of the liquid supply section is in contact with the inner wall surface and is provided with an end opening that forms an opening for directing liquid in the liquid storage section to the outside, and a hole formed in a groove formed continuously with the end opening, and when projected in a direction from the exposed surface toward the inner wall surface, at least a portion of the hole and at least a portion of the recess may overlap. In this form of cartridge, for example, when liquid adhering to the end opening flows into the hole, the liquid that flows into the hole flows into the recess, and the recess can hold the liquid. This makes it possible to prevent the liquid from leaking out through the opening formed by the end opening.

[0083] (5) In a cartridge of the above form, the bottom wall further includes an inner wall surface which is the surface opposite to the exposed surface, a communication hole which connects the bottom wall to the exposed surface, and a recess in the inner wall surface which is continuous with the communication hole and is recessed toward the exposed surface and extends along the inner wall surface, and some of the one or more protrusions may be continuous with the communication hole and have an inclined surface which is inclined in the direction from the exposed surface to the inner wall surface. In the cartridge of this aspect, when liquid adheres to the convex portion, the liquid is more likely to flow down the inclined surface and into the communication hole than in an aspect in which no inclined surface is formed.

[0084] (6) In the cartridge of the above aspect, the one or more protruding portions may be a plurality of protruding portions positioned at intervals from each other on the exposed surface.

[0085] (7) In the cartridge of the above aspect, the one or more protrusions may be a plurality of linear protrusions arranged along a predetermined direction on the exposed surface at intervals from each other.

[0086] (8) In the cartridge of the above aspect, the one or more protrusions may be a single protrusion formed in a mesh pattern on the exposed surface.

[0087] (9) In a cartridge of the above-described form, the one or more convex portions are a plurality of convex portions, each of the plurality of convex portions being formed by a plurality of surfaces, the plurality of surfaces including four connecting surfaces that connect to the exposed surface and two non-connecting surfaces that are not connected to the exposed surface and that connect to portions of the four connecting surfaces, the two non-connecting surfaces being inclined with respect to the exposed surface and having one side connected to each other.

[0088] The present disclosure may be realized in various forms other than the cartridge, such as a method for manufacturing a cartridge, a printing device in which the cartridge is mounted, and a printing system including a cartridge and a printing device. [Explanation of symbols]

[0089] 1...printing system, 10...printing device, 11...storage box, 12...cartridge mounting section, 13...carriage, 14...ejection head, 15...tube, 16...driving mechanism, 17...control section, 20...cartridge, 21...cartridge body, 23...circuit board, 110...front cover, 111...replacement cover, 121...liquid introduction section, 123...liquid storage section, 125...device side terminal section, 160 ...timing belt, 161...driving motor, 210...liquid container, 211...front wall, 212...rear wall, 213...upper wall, 214...container bottom wall, 215...first side wall, 216...second side wall, 217...liquid container, 218...liquid supply section, 218a...first supply section end, 218b...second supply section end, 218ba...end opening, 218bb...end groove, 218bc...end hole, 218bd ...end second groove, 218be...end second hole, 218c...end opening, 220...accommodation section, 221...accommodation front wall, 222...accommodation rear wall, 223...first accommodation side wall, 224...second accommodation side wall, 225...accommodation bottom wall, 225a...accommodation opening, 225aa...opening tip, 225b...exposed surface, 225c...inner wall surface, 225d...first recess, 225e...second recess, 225f...first communication hole, 225g... Second communication hole, 225h... convex portion, 225hB... linear convex portion, 225hC... continuous convex portion, 225hD... mountain-shaped convex portion, 225ha... hole continuous convex portion, 225hb... inclined surface, 225i... accommodation opening, 225j... discontinuous surface, 226... connection surface, 227... non-connection surface, 228... non-mountain-shaped convex portion, 231... cartridge side terminal, CA... central axis, PM... printing medium, RF... rotation fulcrum, ST, ST2... step

Claims

1. A cartridge to be mounted on a printing device having a liquid introduction section, A liquid container that contains a liquid, and a container portion that is connected to the liquid container, The liquid container is a liquid storage portion formed inside the liquid storage body and configured to store liquid; a liquid supply unit that is connected to the liquid introduction unit and is capable of supplying the liquid contained in the liquid container to the printing device, the liquid supply unit being a cylindrical member having one end that contacts the liquid container; Equipped with The storage section includes: A part of the liquid supply unit is accommodated therein, a bottom wall that faces the printing device when the cartridge is attached to the printing device; The bottom wall is an opening portion that faces the other end portion of the liquid supply portion with a gap therebetween or that contacts the other end portion, and that forms an opening into which the liquid introduction portion is inserted; an exposed surface that is continuous with the opening and is exposed to the outside; and one or more protrusions formed on the exposed surface.

2. 2. The cartridge of claim 1, A cartridge, wherein the exposed surface is formed at a position closer to the other end of the liquid supply unit compared to a portion of the opening that is farthest from the other end of the liquid supply unit.

3. 2. The cartridge of claim 1, The bottom wall further includes an inner wall surface opposite to the exposed surface, and a communication hole that communicates between the inner wall surface and the exposed surface. a recess in the inner wall surface, the recess being continuous with the communication hole, recessed toward the exposed surface, and extending along the inner wall surface.

4. 4. The cartridge of claim 3, the other end of the liquid supply portion is in contact with the inner wall surface, an end opening forming an opening for leading the liquid in the liquid storage portion to the outside; a hole formed in a groove formed continuously with the end opening; When projected in a direction from the exposed surface toward the inner wall surface, At least a portion of the hole and at least a portion of the recess overlap.

5. 2. The cartridge of claim 1, The bottom wall further includes an inner wall surface opposite to the exposed surface, and a communication hole that communicates between the inner wall surface and the exposed surface. a recess in the inner wall surface, the recess being continuous with the communication hole and recessed toward the exposed surface, the recess extending along the inner wall surface; A cartridge, wherein some of the one or more protrusions are continuous with the communication hole and have an inclined surface that is inclined in a direction from the exposed surface toward the inner wall surface.

6. 2. The cartridge of claim 1, A cartridge, wherein the one or more protrusions are a plurality of protrusions located at intervals from one another on the exposed surface.

7. 2. The cartridge of claim 1, A cartridge, wherein the one or more protrusions are a plurality of linear protrusions arranged along a predetermined direction on the exposed surface at intervals from each other.

8. 2. The cartridge of claim 1, A cartridge, wherein the one or more protrusions are a single protrusion formed in a mesh pattern on the exposed surface.

9. 2. The cartridge of claim 1, the one or more protrusions are a plurality of protrusions, Each of the plurality of protrusions is formed by a plurality of surfaces, The plurality of surfaces include four connection surfaces connected to the exposed surface, and two non-connection surfaces that are not connected to the exposed surface and are connected to parts of the four connection surfaces; A cartridge in which the two non-connecting surfaces are inclined with respect to the exposed surface and one side of each surface is connected to each other.

Images