Liquid container

Abstract

Provided is a liquid storage container that reduces the possibility of foreign matter entering. The liquid storage container is a liquid storage body (31) that is connected to a liquid ejection apparatus that ejects liquid, the liquid storage body (31) including: a container (32) that stores the liquid; and a filter portion (81) that traps foreign matter, an injection port (42) for injecting the liquid into the container and a guide port (43) for guiding the liquid out of the container being opened in the container, the filter portion being located at the injection port.

Description

Technical Field

[0001] This invention relates to a liquid container. Background Technology

[0002] Patent Document 1 describes a liquid reservoir connected to a liquid dispensing device. The liquid reservoir includes a container for holding liquid. An injection port is provided on the container for injecting liquid. By injecting liquid through the injection port, the liquid reservoir can continue to be used.

[0003] In the liquid container described in Patent Document 1, there is a possibility that foreign matter may enter the container when liquid is injected from the injection port.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2014-61691 Summary of the Invention

[0005] The liquid receiving body that solves the above-mentioned problem is connected to a liquid dispensing device that dispenses liquid, and includes: a container for receiving liquid; a filter for capturing foreign matter, wherein the container has an inlet and an outlet, the inlet for injecting liquid into the container, the outlet for dispensing liquid from the container, and the filter is located at the inlet. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of a liquid ejection device and a liquid collection body.

[0007] Figure 2 This is the front view of the liquid container.

[0008] Figure 3 This is a rear view of the liquid container.

[0009] Figure 4 This is a top view of the liquid container.

[0010] Figure 5 This is a bottom view of the liquid container.

[0011] Figure 6 This is a right-side view of the liquid container.

[0012] Figure 7 This is a left-side view of the liquid container.

[0013] Figure 8 This is a 3D view of a liquid container.

[0014] Figure 9 From Figure 8 The image shows a 3D view of the disassembled cover.

[0015] Figure 10 For along Figure 4 A sectional view cut off along line 10-10.

[0016] Figure 11 This is a 3D view of the frame.

[0017] Figure 12 To Figure 10 The upper part of the image has been enlarged.

[0018] Figure 13 This is a sectional view of the valve section.

[0019] Figure 14 This is a three-dimensional view of the valve section.

[0020] Figure 15 This is a top view of the valve section.

[0021] Figure 16 This is a three-dimensional diagram of the float.

[0022] Figure 17 From Figure 16 The image shows a three-dimensional view of the disassembled sealing components.

[0023] Figure 18 for Figure 13 Enlarged image.

[0024] Figure 19 In order to be with Figure 13 Cross-sectional views of the valve section cut off in different directions.

[0025] Figure 20 To Figure 10 The lower part of the image has been enlarged.

[0026] Figure 21 This is an exploded 3D view of the derived section.

[0027] Figure 22 This is a three-dimensional view of the derived part.

[0028] Figure 23 for Figure 8 Enlarged image.

[0029] Figure 24 This is a cross-sectional view showing a modified example of the filter section.

[0030] Figure 25 This is a cross-sectional view showing a modified example of the valve section.

[0031] Figure 26 To indicate and Figure 25 Sectional views of different variations. Detailed Implementation

[0032] Hereinafter, an embodiment of a liquid reservoir connected to a liquid ejection device will be described with reference to the accompanying drawings. First, the liquid ejection device will be described. The liquid ejection device is, for example, an inkjet printer that records text, photographs, and other images by ejecting ink, an example of a liquid, onto a medium such as paper or cloth.

[0033] like Figure 1 As shown, the liquid ejection device 11 is connected to the liquid collection body 31. The liquid ejection device 11 includes a housing 12, an ejection section 13, and a supply mechanism 14.

[0034] The ejector section 13 is housed within the housing 12. The ejector section 13 is configured to eject liquid. The ejector section 13 is, for example, a head. The ejector section 13 has one or more nozzles 15. The ejector section 13 ejects liquid from the nozzles 15 to the medium 99.

[0035] The supply mechanism 14 is configured to supply liquid from the liquid reservoir 31 to the ejector 13. The supply mechanism 14 includes, for example, a connector 21, a supply pipe 22, a pump 23, a degassing module 24, a storage section 25, and a pressure regulating valve 26.

[0036] The connector 21 is configured to connect to the liquid reservoir 31. By connecting the connector 21 to the liquid reservoir 31, liquid can be supplied from the liquid reservoir 31 to the ejector 13. In this example, the connector 21 is located outside the housing 12. The connector 21 may also be located inside the housing 12.

[0037] The connector 21 has a connecting portion 27. The connecting portion 27 is a functional part for detecting the connection between the liquid container 31 and the connector 21. The connecting portion 27 is, for example, a terminal that is electrically connected to the liquid container 31.

[0038] The supply pipe 22 is configured to allow liquid to flow through it. The supply pipe 22 includes, for example, a tube. The supply pipe 22 is connected to the connector 21 and the ejector 13. In this example, the supply pipe 22 extends across the inside and outside of the housing 12. The supply pipe 22 may also extend only within the housing 12. That is, the supply pipe 22 may also be entirely housed within the housing 12.

[0039] Pump 23 is located in supply pipe 22. Pump 23 is located, for example, between connector 21 and degassing module 24. Pump 23 is located, for example, inside housing 12. Pump 23 is driven to deliver liquid from liquid reservoir 31 toward ejector 13. Pump 23 is, for example, a diaphragm pump.

[0040] The degassing module 24 is located in the supply pipe 22. The degassing module 24 is located, for example, between the pump 23 and the storage section 25. The degassing module 24 is located, for example, inside the housing 12. The degassing module 24 is configured to degas the liquid flowing in the supply pipe 22. The degassing module 24 removes air bubbles from the liquid, for example, by applying negative pressure to the liquid.

[0041] The storage section 25 is located in the supply pipe 22. The storage section 25 may be located, for example, between the degassing module 24 and the pressure regulating valve 26. The storage section 25 may also be located within the housing 12. The storage section 25 is configured to store liquid. The storage section 25 may also be configured to supply the stored liquid. For example, the storage section 25 may also deliver the stored liquid to the ejection section 13 by applying pressure to the stored liquid.

[0042] Pressure regulating valve 26 is located in supply pipe 22. Pressure regulating valve 26 is located, for example, between storage section 25 and ejection section 13. Pressure regulating valve 26 is located, for example, inside housing 12. Pressure regulating valve 26 opens and closes according to the pressure inside ejection section 13. When the pressure inside ejection section 13 is below a predetermined pressure, pressure regulating valve 26 opens. In this case, liquid flows from storage section 25 to ejection section 13. As liquid flows to ejection section 13, the pressure inside ejection section 13 increases. When the pressure inside ejection section 13 exceeds the predetermined pressure, pressure regulating valve 26 closes. In this case, liquid does not flow from storage section 25 to ejection section 13. Thus, the pressure inside ejection section 13 is regulated.

[0043] The supply mechanism 14 may also have more than one supply valve 28. The supply valve 28 is located in the supply pipe 22. The supply valve 28 is located, for example, between the connector 21 and the pump 23. The supply valve 28 is located, for example, inside the housing 12. The supply valve 28 may also be located outside the housing 12.

[0044] When the supply valve 28 is closed, no liquid is supplied from the liquid reservoir 31 to the liquid dispensing device 11. When the supply valve 28 is open, liquid is supplied from the liquid reservoir 31 to the liquid dispensing device 11. In the case where the supply mechanism 14 has multiple supply valves 28, in addition to being arranged between the connector 21 and the pump 23, the multiple supply valves 28 may be arranged, for example, between the degassing module 24 and the storage unit 25, or between the storage unit 25 and the pressure regulating valve 26.

[0045] Next, the liquid container 31 will be described.

[0046] The liquid reservoir 31 is configured to collect liquid. The liquid reservoir 31 is connected to the liquid dispensing device 11. Specifically, the liquid reservoir 31 is connected to the connector 21. The liquid reservoir 31 can also be detached from the connector 21. The liquid reservoir 31 and the connector 21 are easily detachable.

[0047] In this example, a connector 21 is attached to the forward-facing surface of the liquid container 31. With the connector 21 attached to the liquid container 31, the direction from the liquid container 31 towards the connector 21 is forward. The surface of the liquid container 31 connected to the connector 21 is the forward-facing surface of the liquid container 31.

[0048] In this example, the liquid reservoir 31 is located outside the housing 12. Therefore, the liquid reservoir 31 is connected to the connector 21 outside the housing 12. In this example, the liquid reservoir 31 is connected to the connector 21 at a location away from the housing 12. The liquid reservoir 31 may also be located inside the housing 12. For example, the liquid reservoir 31 may also be connected to the connector 21 after being housed inside the housing 12.

[0049] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Figure 7 As shown, in this example, the liquid container 31 is rectangular in shape. In this example, among the width, depth, and height, the height of the liquid container 31 is the greatest.

[0050] like Figure 8 As shown, the liquid container 31 includes a container 32. The container 32 holds the liquid.

[0051] like Figure 9 As shown, in this example, container 32 is rectangular in shape. Therefore, container 32 has a front wall 33, a rear wall 34, an upper wall 35, a lower wall 36, a right side wall 37, and a left side wall 38.

[0052] The front wall 33 is the wall located at the front of the container 32. The front wall 33 is the wall opposite to the rear wall 34. The front wall 33 is connected to the upper wall 35, the lower wall 36, the right side wall 37, and the left side wall 38. In this example, the front wall 33 constitutes the front-facing surface of the liquid container 31.

[0053] The rear wall 34 is the wall located at the rear of the container 32. The rear wall 34 is the wall opposite to the front wall 33. The rear wall 34 is connected to the upper wall 35, the lower wall 36, the right side wall 37, and the left side wall 38.

[0054] The upper wall 35 is the wall located at the top of the container 32. The upper wall 35 is the wall opposite to the lower wall 36. The upper wall 35 is connected to the front wall 33, the rear wall 34, the right side wall 37, and the left side wall 38.

[0055] The lower wall 36 is the wall located at the bottom of container 32. The lower wall 36 is the wall opposite to the upper wall 35. The lower wall 36 is connected to the front wall 33, the rear wall 34, the right side wall 37, and the left side wall 38.

[0056] The right side wall 37 is the wall located on the right side of the container 32 when viewed from the front relative to the front wall 33. The right side wall 37 is the wall opposite to the left side wall 38. The right side wall 37 is connected to the front wall 33, the rear wall 34, the upper wall 35, and the lower wall 36.

[0057] The left side wall 38 is the wall located on the left side of the container 32 when viewed from the front relative to the front wall 33. The left side wall 38 is the wall opposite to the right side wall 37. The left side wall 38 is connected to the front wall 33, the rear wall 34, the upper wall 35, and the lower wall 36.

[0058] like Figure 10 As shown, container 32 has a storage chamber 41 for holding liquid. The storage chamber 41 is a space in container 32 divided by front wall 33, rear wall 34, upper wall 35, lower wall 36, right side wall 37 and left side wall 38.

[0059] like Figure 9 as well as Figure 10 As shown, the container 32 has an inlet 42. The inlet 42 is an opening for injecting liquid into the container 32. The liquid is injected into the storage chamber 41 through the inlet 42. Thus, the user can continue to use the liquid storage body 31.

[0060] Inlet 42 is located on the upper side of container 32. "Upper side of container 32" means above the midpoint between the upper wall 35 and the lower wall 36. Specifically, the upper side of container 32 is above the first imaginary line L1 extending from the midpoint between the upper wall 35 and the lower wall 36. In this example, inlet 42 opens on the upper wall 35.

[0061] Inlet 42 is located at the front of container 32. The front of container 32 is defined as being forward of the midpoint between the front wall 33 and the rear wall 34. Specifically, the front of container 32 is forward of the second imaginary line L2 extending from the midpoint between the front wall 33 and the rear wall 34. In this example, inlet 42 opens at the front of the upper wall 35.

[0062] The container 32 has an opening with a discharge port 43. The discharge port 43 is an opening for discharging liquid from the container 32. The liquid is discharged from the receiving chamber 41 through the discharge port 43.

[0063] The outlet 43 is located on the lower side of the container 32. The lower side of the container 32 is defined as being below the midpoint between the upper wall 35 and the lower wall 36. Specifically, the lower side of the container 32 is below the first imaginary line L1. In this example, the outlet 43 opens on the lower wall 36.

[0064] The outlet 43 is located at the rear of container 32. The rear of container 32 refers to a location further rear than the midpoint between the front wall 33 and the rear wall 34. Specifically, the rear of container 32 is located further rear than the second imaginary line L2. In this example, the outlet 43 opens at the rear of the lower wall 36.

[0065] Container 32 has a visual confirmation unit 44. The visual confirmation unit 44 is a functional unit for visually confirming the liquid level of the liquid contained in container 32. By visually confirming the liquid level via the visual confirmation unit 44, the user can ascertain the remaining amount of liquid contained in container 32.

[0066] The visual confirmation section 44 within the container 32 is composed of a transparent or semi-transparent portion. In this example, the visual confirmation section 44 is located on the front wall 33. Therefore, at least the front wall 33 within the container 32 is transparent or semi-transparent. In this example, it is not limited to the front wall 33; the entire container 32 is transparent or semi-transparent.

[0067] Container 32 is made of, for example, a transparent or translucent resin material. Container 32 is manufactured, for example, by blow molding. Container 32 is not limited to blow molding; it can also be manufactured by other methods such as injection molding and extrusion molding.

[0068] like Figure 8 As shown, the liquid container 31 includes a protective component 51. The protective component 51 protects the container 32 by surrounding it. In this example, the protective component 51 has a cover 52 and a frame 53. The cover 52 and the frame 53 may also be integrated.

[0069] In this example, the cover 52 is fixed to the frame 53. In this example, the cover 52 is secured to the frame 53 with screws. The cover 52 can be easily attached to and removed from the frame 53.

[0070] When the cover 52 is fixed to the frame 53, the force applied to the cover 52 is less likely to be transmitted to the container 32 compared to when the cover 52 is fixed to the container 32. For example, if the cover 52 deforms, the stress caused by the deformation is less likely to be transmitted to the container 32. Furthermore, when the cover 52 is fixed to the frame 53, the container 32 does not need to be processed for fixing the cover 52 compared to when the cover 52 is fixed to the container 32. As a result, the rigidity of the container 32 can be maintained. Therefore, the container 32 is properly protected by the protective member 51.

[0071] Cover 52 is configured to cover container 32. Cover 52 is made of, for example, a metal plate. In this example, cover 52 has a front plate 54, an upper plate 55, a right plate 56, and a left plate 57.

[0072] The front panel 54 is the front panel within the cover 52. The front panel 54 is connected to the upper panel 55, right panel 56, and left panel 57. The front panel 54 is opposite the front wall 33. In this example, the front panel 54 constitutes the front-facing surface of the liquid reservoir 31.

[0073] The upper plate 55 is the upper plate in the cover 52. The upper plate 55 is connected to the front plate 54, the right plate 56 and the left plate 57. The upper plate 55 is opposite to the upper wall 35.

[0074] Right panel 56 is the panel located on the right side of the cover 52 when viewed from the front of the front panel 54. Right panel 56 is the opposite of left panel 57. Right panel 56 is connected to the front panel 54 and the upper panel 55. Right panel 56 is opposite to the right side wall 37. In this example, right panel 56 is fixed to frame 53.

[0075] Left panel 57 is the panel located on the left side of the cover 52 when viewed from the front of the front panel 54. Left panel 57 is the opposite of right panel 56. Left panel 57 is connected to the front panel 54 and the upper panel 55. Left panel 57 is opposite to the left side wall 38. In this example, left panel 57 is fixed to frame 53.

[0076] The cover 52 covers the container 32 in such a way that at least a visual confirmation portion 44 is exposed. In this example, the cover 52 covers the container 32 in such a way that at least a portion of the front wall 33 is exposed. An opening 58 is provided on the cover 52 to expose the front wall 33. In this example, since the container 32 is entirely transparent or semi-transparent, the portion of the front wall 33 exposed through the opening 58 functions as the visual confirmation portion 44. The user visually confirms the liquid level contained in the container 32 through the opening 58.

[0077] In this example, since the cover 52 does not cover the rear wall 34, the rear wall 34 is exposed. Therefore, in this example, the user can also visually confirm the liquid level of the liquid contained in the container 32 through the rear wall 34.

[0078] In this example, the exposed opening 58 is not limited to the visual confirmation section 44, but also exposes the injection port 42. That is, in this example, the exposed opening 58 exposes the front wall 33 and the upper wall 35. Therefore, the exposed opening 58 spans the front plate 54 and the upper plate 55. The opening exposing the visual confirmation section 44 and the opening exposing the injection port 42 can also be provided separately.

[0079] The cover 52 may also have a grip 59 for the user to hold. This makes it easier for the user to move the liquid container 31. In this example, the grip 59 is mounted on the upper plate 55. The grip 59 is located on the rear side of the upper plate 55. That is, the grip 59 is located on the upper plate 55 further rearward than the second imaginary line L2.

[0080] like Figure 9 As shown, frame 53 supports container 32 from below. Frame 53 is located below container 32. By supporting container 32 with frame 53, the posture of liquid container 31 is stabilized.

[0081] The frame 53 is made of, for example, a metal plate. In this example, the frame 53 has a mounting plate 61, a protective plate 62, a top plate 63, and a bottom plate 64.

[0082] like Figure 9 as well as Figure 11 As shown, mounting plate 61 is located at the front of frame 53. Mounting plate 61 is the opposite of protective plate 62. Mounting plate 61 is connected to top plate 63 and bottom plate 64. In this example, mounting plate 61 constitutes the front-facing surface of liquid reservoir 31.

[0083] Mounting plate 61 is a plate for mounting the outlet section 151, which will be described later. Mounting plate 61 is located below the front wall 33. Mounting plate 61 extends in a manner connected to the front wall 33. Mounting plate 61 is located below the front plate 54. Mounting plate 61 extends in a manner connected to the front plate 54.

[0084] Protective plate 62 is located at the rear within frame 53. Protective plate 62 is the opposite of mounting plate 61. Protective plate 62 is connected to top plate 63 and bottom plate 64. Protective plate 62 is located below rear wall 34. Protective plate 62 extends in connection with rear wall 34.

[0085] The top plate 63 is located at the top of the frame 53. The top plate 63 is the opposite of the bottom plate 64. The top plate 63 is connected to the mounting plate 61 and the protective plate 62. A container 32 is provided on the top plate 63. That is, the top plate 63 is in contact with the container 32. The top plate 63 is opposite to the lower wall 36.

[0086] The base plate 64 is located at the bottom of the frame 53. The base plate 64 is the opposite of the top plate 63. The base plate 64 is connected to the mounting plate 61 and the protective plate 62.

[0087] The frame 53 defines a storage space 65 below the container 32. The storage space 65 is defined by the mounting plate 61, protective plate 62, top plate 63, and bottom plate 64. The storage space 65 is accessible and operable from the outside. The storage space 65 is located directly below the container 32. The structure of the liquid reservoir 31 is located within the storage space 65.

[0088] like Figure 11 As shown, there is one or more openings 66 on the frame 53. In this example, there are two openings 66 on the frame 53. The openings 66 are defined by the mounting plate 61, the protective plate 62, the top plate 63, and the bottom plate 64. The storage space 65 communicates with the openings 66. Users can access and operate the storage space 65 through the openings 66.

[0089] In this example, with the cover 52 mounted on the frame 53, the two openings 66 are closed by the right panel 56 and the left panel 57, respectively. That is, in this example, the cover 52 covers the storage space 65. Therefore, in this example, the user needs to remove the cover 52 from the frame 53 in order to access the storage space 65. In other words, the structure located within the storage space 65 is protected by the cover 52.

[0090] An insertion port 67 is provided on the frame 53. The insertion port 67 is located on the top plate 63. In this example, the insertion port 67 is located on the rear side of the top plate 63. With the container 32 placed on the frame 53, the insertion port 67 overlaps with the outlet port 43.

[0091] A mounting port 68 is provided on the frame 53. The mounting port 68 is an opening on the mounting plate 61. The mounting port 68 is an opening for mounting the outlet section 151.

[0092] like Figure 12 As shown, the liquid container 31 may also include a cushioning material 71. The cushioning material 71 is located, for example, between the container 32 and the cover 52. In this example, the cushioning material 71 is located between the upper wall 35 and the upper plate 55.

[0093] Typically, considering manufacturing and installation errors, the cover 52 is manufactured larger than the container 32. Therefore, a gap may exist between the container 32 and the cover 52. If a gap exists between the container 32 and the cover 52, the container 32 may be able to move within the cover 52. This is mitigated by the cushioning material 71, which reduces the likelihood of the container 32 moving within the cover 52. Furthermore, due to the cushioning material 71, vibrations and impacts are less likely to be transmitted from the cover 52 to the container 32.

[0094] The liquid container 31 may also have a protective cover 72. The protective cover 72 is, for example, mounted on the container 32. In this example, the protective cover 72 is mounted on the upper wall 35. The protective cover 72 is mounted on the upper wall 35 via a hinge 73.

[0095] The protective cap 72 opens and closes relative to the container 32. When closed, the protective cap 72 blocks the inlet 42. Thus, the protective cap 72 protects the inlet 42. When the protective cap 72 is open, the inlet 42 is exposed. In this case, the user can inject liquid through the inlet 42.

[0096] The liquid container 31 may also have a sealing ring 74. The sealing ring 74 is located between the container 32 and the protective cap 72. In this example, the sealing ring 74 is installed on the container 32. Specifically, the sealing ring 74 is installed on the upper wall 35 in a manner that surrounds the inlet 42.

[0097] With the protective cap 72 closed, the sealing ring 74 seals the container 32 and the protective cap 72. This reduces the possibility of foreign matter entering the injection port 42 when the protective cap 72 is closed.

[0098] An atmospheric opening 75 may also be provided on the container 32 or the protective cap 72. The atmospheric opening 75 is an opening that opens the receiving chamber 41 to the atmosphere. By opening the receiving chamber 41 to the atmosphere, the liquid within the receiving chamber 41 can be smoothly discharged through the outlet 43. The atmospheric opening 75 is particularly useful when the container 32 and the protective cap 72 are sealed using a sealing ring 74. In this example, an atmospheric opening 75 is provided on the protective cap 72.

[0099] The liquid container 31 may also be equipped with a locking mechanism 76. The locking mechanism 76 is a mechanism that locks the closed protective cap 72 relative to the container 32. The locking mechanism 76 is installed on the container 32 and the protective cap 72. By locking the protective cap 72 with the locking mechanism 76, the possibility of the protective cap 72 being accidentally opened can be reduced.

[0100] The liquid container 31 includes a filter section 81. The filter section 81 is installed in the container 32. The filter section 81 can also be detached from the container 32. The filter section 81 is freely detachable from the container 32. The filter section 81 is located at the inlet 42.

[0101] The filter section 81 is configured to capture foreign objects. By using the filter section 81, the possibility of foreign objects entering the container 32 from the inlet 42 can be reduced. The filter section 81 has, for example, a retaining member 82 and one or more filters. In this example, the filter section 81 has a retaining member 82, a first filter 83, and a second filter 84.

[0102] When liquid is injected through inlet 42, the liquid passes through filter section 81. The liquid injected through inlet 42 passes through the first filter 83 and the second filter 84 in that order. Therefore, in this example, the first filter 83 is a primary filter. The second filter 84 is a secondary filter through which the liquid that has passed through the primary filter passes. By having the liquid pass through more than one filter, foreign matter can be removed from the liquid.

[0103] The retaining member 82 holds the first filter 83 and the second filter 84. The retaining member 82 is embedded in the inlet 42. The retaining member 82 is configured to allow liquid to pass through. In this example, the retaining member 82 is a stainless steel mesh filter. Therefore, in this example, the retaining member 82 also functions as a tertiary filter. Liquid that has passed through the first filter 83 and the second filter 84 passes through the tertiary filter.

[0104] The retaining member 82 has an edge portion 85 and a protruding portion 86. The edge portion 85 contacts the edge that defines the inlet 42 on the upper wall 35. The retaining member 82 is installed in the container 32 by snapping the edge portion 85 onto the upper wall 35. The protruding portion 86 is connected to the edge portion 85. The protruding portion 86 is the portion that protrudes from the edge portion 85 into the container 32. Therefore, the protruding portion 86 is located in the receiving chamber 41.

[0105] One or more filters are housed within the protrusion 86. That is, the protrusion 86 holds the first filter 83 and the second filter 84. In this example, the first filter 83 and the second filter 84 are located above the bottom of the protrusion 86. Therefore, liquid that has passed through the first filter 83 and the second filter 84 passes through the bottom of the protrusion 86.

[0106] The first filter 83 is, for example, a sponge filter. The first filter 83 is the first filter in the filter section 81 to come into contact with the liquid injected from the inlet 42. In this example, the first filter 83 is located above the second filter 84.

[0107] The second filter 84 is, for example, a sponge filter. The second filter 84 is a filter that comes into contact with the liquid that has passed through the first filter 83 in the filter section 81. The second filter 84 is located below the first filter 83. In this example, the second filter 84 is stacked with the first filter 83.

[0108] The pore size of the primary filter is coarser than that of the secondary filter. In this example, the pore size of the first filter 83 is coarser than that of the second filter 84. That is, the particle size of the first filter 83 is larger than that of the second filter 84. Filter particle size refers to, for example, the particle size at which the capture rate of a standard particle of known size is 99% or higher when filtering standard particles. For example, the particle size of the first filter 83 is 70 micrometers. For example, the particle size of the second filter 84 is 13 micrometers.

[0109] The smaller the particle size of a filter, the finer the foreign matter it can capture. Conversely, the smaller the particle size, the greater the pressure loss as the liquid passes through the filter. In other words, the smaller the particle size, the more difficult it is for the liquid to pass through the filter. A trade-off must be struck between particle size and pressure loss in a filter.

[0110] When liquid has difficulty passing through the filter, the injection of liquid will stop. If liquid has difficulty passing through the filter, there is a possibility that liquid will remain in the filter. In such a case, there is a possibility that the injected liquid will be bounced back by the filter. If the liquid is bounced back by the filter, there is a possibility that the liquid will scatter around the injection port 42.

[0111] In this example, when liquid is injected through inlet 42, the liquid first comes into contact with the first filter 83. Because the pores of the first filter 83 are relatively large, the liquid easily passes through it. Therefore, the liquid does not remain in the first filter 83. This reduces the possibility of the injected liquid scattering.

[0112] The liquid that has passed through the first filter 83 comes into contact with the second filter 84. Because the pores of the second filter 84 are finer, finer foreign objects are captured by the second filter 84. That is, the second filter 84 captures foreign objects that have passed through the first filter 83.

[0113] Because the pores of the second filter 84 are relatively fine, there is a possibility that the injected liquid may become trapped within it. The velocity of the injected liquid decreases as it passes through the first filter 83. Therefore, even if liquid becomes trapped in the second filter 84, the likelihood of it being bounced back is low. Furthermore, even if liquid is bounced back by the second filter 84, it will still be received by the first filter 83. Therefore, the likelihood of liquid scattering around the injection port 42 is low.

[0114] The aperture of the retaining member 82, which functions as a tertiary filter, can be coarser than that of the first filter 83 or finer than that of the second filter 84. Alternatively, the aperture of the retaining member 82 can be finer than that of the first filter 83 but coarser than that of the second filter 84. When the aperture of the retaining member 82 is finer than that of the second filter 84, the filter section 81 can capture even smaller foreign objects.

[0115] like Figure 10 As shown, the liquid container 31 has a discharge mechanism 91. The discharge mechanism 91 is a mechanism for discharging liquid from the container 32 to the connector 21. The discharge mechanism 91 is connected to the discharge port 43 and the connector 21.

[0116] The discharge mechanism 91 has a valve 92. The valve 92 is configured to be openable and closable. The valve 92 controls the flow of liquid by opening and closing. When the valve 92 is open, liquid can be discharged from the container 32 to the connector 21. When the valve 92 is closed, liquid cannot be discharged from the container 32 to the connector 21.

[0117] In this example, valve 92 is mounted on container 32. Specifically, valve 92 is mounted on lower wall 36. Valve 92 is mounted in a manner that overlaps with outlet 43. That is, valve 92 is mounted on the rear side of lower wall 36. Valve 92 is not limited to direct connection to container 32; it can also be connected to container 32, for example, via a pipe. Valve 92 is located in receiving space 65 through insertion port 67. That is, valve 92 is received within frame 53.

[0118] The valve 92 is configured to open and close based on the remaining amount of liquid contained in the container 32. For example, the valve 92 will close when the remaining amount of liquid contained in the container 32 becomes zero or very low. This reduces the possibility of air flowing from the liquid reservoir 31 to the liquid dispensing device 11. In this example, the valve 92 is a float valve that automatically opens and closes based on the remaining amount of liquid contained in the container 32.

[0119] like Figure 13As shown, the valve section 92 has a retainer 93, a float 94, and a sealing component 95.

[0120] The retainer 93 is cylindrical in shape. The retainer 93 houses the float 94 and the sealing component 95. Liquid flows from the container 32 to the connector 21 by passing through the retainer 93.

[0121] The retainer 93 has a liquid chamber 96, an inflow channel 97, and an outflow channel 98. The liquid chamber 96 is a space for housing the float 94 and the sealing component 95. The liquid chamber 96 communicates with the inflow channel 97 and the outflow channel 98. Liquid flows into the liquid chamber 96 through the inflow channel 97. Liquid flows out of the liquid chamber 96 through the outflow channel 98.

[0122] The liquid chamber 96 is defined by the inflow surface 101, the outflow surface 102, and the inner peripheral surface 103. The inflow surface 101, the outflow surface 102, and the inner peripheral surface 103 are the surfaces that the cage 93 has inside.

[0123] The inflow surface 101 is the surface through which the inflow channel 97 opens. The inflow surface 101 is located above the outflow surface 102.

[0124] The outflow surface 102 is the surface through which the outflow channel 98 opens. The outflow surface 102 is located below the inflow surface 101. The float 94 moves between the inflow surface 101 and the outflow surface 102. Specifically, the float 94 moves in a manner close to the inflow surface 101 or close to the outflow surface 102.

[0125] The inner circumferential surface 103 is connected to the inflow surface 101 and the outflow surface 102. When viewed from above, the inner circumferential surface 103 extends in a circular shape. That is, when viewed from above, the liquid chamber 96 is cylindrical in shape.

[0126] like Figure 14 as well as Figure 15 As shown, in this example, the cage 93 has two types of inflow channels 97. Specifically, the cage 93 has a first inflow channel 97A and a second inflow channel 97B. In this example, there is one first inflow channel 97A and four second inflow channels 97B.

[0127] When viewed from above, the first inflow channel 97A is located at the center. When viewed from above, four second inflow channels 97B are located around the first inflow channel 97A. The first inflow channel 97A and the second inflow channels 97B are respectively connected to the outlet 43.

[0128] Multiple second inflow channels 97B are defined by multiple forming surfaces 104. The multiple forming surfaces 104 are surfaces that the cage 93 has inside. The multiple forming surfaces 104 are connected to the inflow surface 101.

[0129] like Figure 13 As shown, the first inflow channel 97A is defined by a first inner surface 105, a stepped surface 106, a second inner surface 107, and an inclined surface 108. The first inner surface 105, the stepped surface 106, the second inner surface 107, and the inclined surface 108 are the surfaces that the retainer 93 has inside.

[0130] The first inner surface 105, the stepped surface 106, the second inner surface 107, and the inclined surface 108 are connected sequentially from the outlet 43 toward the liquid chamber 96. Specifically, the first inner surface 105 is connected to the stepped surface 106. The stepped surface 106 is connected to the first inner surface 105 and the second inner surface 107. The second inner surface 107 is connected to both the stepped surface 106 and the inclined surface 108. The inclined surface 108 is connected to both the second inner surface 107 and the inflow surface 101.

[0131] The first inflow channel 97A extends in such a way that its cross-sectional area increases from the outlet 43 toward the liquid chamber 96. Therefore, when viewed from above, the diameter of the circle formed by the first inner surface 105 is smaller than the diameter of the circle formed by the second inner surface 107. The inclined surface 108 is inclined in such a way that the cross-sectional area of ​​the first inflow channel 97A increases from the outlet 43 toward the liquid chamber 96.

[0132] The outflow channel 98 is defined by a defining surface 109. The defining surface 109 is the surface that the cage 93 has inside. The defining surface 109 is connected to the outflow surface 102.

[0133] In this example, the retainer 93 has a first contact portion 111 and a second contact portion 112. The first contact portion 111 and the second contact portion 112 are formed on the outflow surface 102. The first contact portion 111 and the second contact portion 112 are portions in contact with the sealing member 95 in the outflow surface 102. In this example, the first contact portion 111 and the second contact portion 112 are protruding portions in the outflow surface 102.

[0134] Viewed from above, the first contact portion 111 is arranged in the outflow surface 102 to surround the outflow channel 98. Alternatively, the outflow channel 98 is open on the first contact portion 111. Viewed from above, the first contact portion 111 extends in a circular shape.

[0135] When viewed from above, the second contact portion 112 is provided in the outflow surface 102 in a manner that surrounds the first contact portion 111. When viewed from above, the second contact portion 112 extends in a circular shape.

[0136] Float 94 is located in liquid chamber 96. The density of float 94 is less than the density of the liquid contained in container 32. Therefore, float 94 floats relative to the liquid. As the remaining amount of liquid contained in container 32 decreases, the liquid level drops into liquid chamber 96. Specifically, when the remaining amount of liquid contained in container 32 becomes zero, the liquid level drops into liquid chamber 96. Float 94 moves according to the position of the liquid level. Thus, float 94 moves according to the remaining amount of liquid contained in container 32. Valve 92 is opened and closed by the movement of float 94.

[0137] The float 94 has a first opposing surface 121, a second opposing surface 122, and an outer peripheral surface 123. The first opposing surface 121 is the surface opposite to the inflow surface 101. In this example, the first opposing surface 121 is the upper surface of the float 94. The second opposing surface 122 is the surface opposite to the outflow surface 102. In this example, the second opposing surface 122 is the lower surface of the float 94. The outer peripheral surface 123 is the surface opposite to the inner peripheral surface 103. The outer peripheral surface 123 is connected to the first opposing surface 121 and the second opposing surface 122.

[0138] like Figure 16 as well as Figure 17 As shown, in this example, the float 94 is rectangular in shape. When viewed from above, the outer peripheral surface 123 extends rectangularly.

[0139] The float 94 has a mounting portion 124. A sealing member 95 is mounted on the mounting portion 124. The mounting portion 124 is formed on the second opposing surface 122.

[0140] The mounting portion 124 has, for example, a first rib 125 and a second rib 126. A sealing member 95 is embedded in the first rib 125 and the second rib 126, thereby mounting the sealing member 95 onto the mounting portion 124.

[0141] like Figure 18 As shown, the mounting portion 124 has a displacement space 127. The displacement space 127 is the space defined by the first rib 125 and the sealing member 95. The displacement space 127 is a space for the sealing member 95 to be displaced by contacting the first contact portion 111.

[0142] When the float 94 approaches the outlet surface 102, the first contact portion 111 contacts the sealing member 95 in a manner that it is embedded in the mounting portion 124. The sealing member 95 deforms upon contact with the first contact portion 111. At this time, the sealing member 95 flexes in a manner that reduces the volume of the displacement space 127.

[0143] Sometimes the float 94 may tilt in the liquid chamber 96. For example, there may be a situation where the second opposing surface 122 is not parallel to the outflow surface 102. When the float 94 tilts, the sealing member 95 will also tilt. Therefore, there is a possibility that the first contact portion 111 may not make proper contact with the sealing member 95.

[0144] In this example, the first contact portion 111 contacts the sealing member 95 in a manner that is embedded in the mounting portion 124. In this case, even if the sealing member 95 tilts, it will deform in coordination with the first contact portion 111. Thus, the first contact portion 111 can make proper contact with the sealing member 95. That is, the sealing member 95 can seal the cage 93 and the float 94. In this way, the displacement space 127 can accommodate tilting of the float 94.

[0145] Without the displacement space 127, when the float 94 tilts, the sealing member 95 will not deform even if the first contact portion 111 contacts the sealing member 95. Therefore, the tilted position of the sealing member 95 will remain. In this situation, there is a possibility that the sealing member 95 may fail to seal the cage 93 and the float 94.

[0146] like Figure 16 , Figure 17 , Figure 18 As shown, the mounting portion 124 has a recessed groove 128. The recessed groove 128 extends in such a way that it cuts through the first rib 125 and the second rib 126. The recessed groove 128 is a groove that allows communication between the space between the sealing member 95 and the mounting portion 124 and the outside. The space between the sealing member 95 and the mounting portion 124 includes a displacement space 127.

[0147] When the sealing member 95 is installed onto the mounting portion 124, air is discharged to the outside through the recess 128 from the space between the sealing member 95 and the mounting portion 124. That is, the recess 128 facilitates the installation of the sealing member 95 onto the mounting portion 124. Without the recess 128, when the sealing member 95 is installed onto the mounting portion 124, the space between the sealing member 95 and the mounting portion 124 is sealed. In this case, air becomes trapped in the space between the sealing member 95 and the mounting portion 124, making it difficult to install the sealing member 95 onto the mounting portion 124.

[0148] like Figure 13 As shown, when the liquid level in the liquid chamber 96 drops by discharging liquid from the liquid reservoir 31 to the liquid dispensing device 11, the float 94 approaches the outlet surface 102. As a result, the sealing member 95 contacts the outlet surface 102. This blocks the outlet channel 98. Thus, when the liquid contained in the container 32 disappears, the valve portion 92 closes the outlet channel 98. In this example, the sealing member 95 contacts the first contact portion 111 and the second contact portion 112. That is, the sealing member 95 provides a double seal for the cage 93 and the float 94. This improves the sealing performance achieved by the sealing member 95. Furthermore, by properly contacting either the first contact portion 111 or the second contact portion 112 with the sealing member 95, the cage 93 and the float 94 can be sealed. Therefore, even if the float 94 tilts, it is easy to properly seal the cage 93 and the float 94.

[0149] When the liquid level in the liquid chamber 96 rises by injecting liquid into the container 32, the float 94 approaches the inflow surface 101. As a result, the sealing member 95 moves away from the outflow surface 102. Thus, liquid can be discharged from the liquid reservoir 31 to the liquid dispensing device 11.

[0150] When liquid is contained in container 32, liquid chamber 96 is filled with liquid. Therefore, during the period when liquid is contained in container 32, inflow surface 101 and first opposing surface 121 are in continuous contact. In such a situation, there is a possibility that the float 94 may adhere to the holder 93 due to the liquid adhering between inflow surface 101 and first opposing surface 121. In this example, this can be addressed by opening multiple inflow channels 97 in inflow surface 101, thereby reducing the contact area between inflow surface 101 and first opposing surface 121. Furthermore, the contact area between inflow surface 101 and first opposing surface 121 can be reduced by using the inclined surface 108. Thus, the possibility of float 94 adhering to holder 93 can be reduced.

[0151] like Figure 19 As shown, in this example, the outer peripheral surface 123 is in contact with the inner peripheral surface 103. Therefore, the float 94 moves while in contact with the outer peripheral surface 123. That is, the inner peripheral surface 103 guides the movement of the float 94.

[0152] Regardless of the presence or absence of liquid contained in container 32, the outer peripheral surface 123 remains in contact with the inner peripheral surface 103. Therefore, there is a possibility that the float 94 may adhere to the retainer 93 due to liquid adhering between the outer peripheral surface 123 and the inner peripheral surface 103. In this example, when viewed from above, the inner peripheral surface 103 extends in a circular shape, while the outer peripheral surface 123 extends in a rectangular shape. Therefore, only the corner portion of the outer peripheral surface 123 contacts the inner peripheral surface 103. Thus, for example, compared to the case where the outer peripheral surface 123 extends in an arc shape, the contact area between the outer peripheral surface 123 and the inner peripheral surface 103 can be reduced. This reduces the likelihood of the float 94 adhering to the retainer 93.

[0153] When the liquid level drops into liquid chamber 96, air enters liquid chamber 96. Although the liquid level rises into receiving chamber 41 by injecting liquid into container 32, there is a possibility that float 94 may not move properly when air remains in liquid chamber 96. In this example, the air remaining in liquid chamber 96 is easily returned to receiving chamber 41 by means of inclined surface 108.

[0154] like Figure 13 As shown, valve 92 may also have guide members 131. In this example, valve 92 has two guide members 131. The guide members 131 are, for example, rods. The guide members 131 are mounted on retainer 93. The guide members 131 are located within liquid chamber 96. The guide members 131 extend from outflow surface 102 toward inflow surface 101. The guide members 131 guide the movement of float 94. In this case, float 94 has an insertion portion 132 for the guide members 131 to be inserted. The insertion portion 132 protrudes, for example, from outer peripheral surface 123.

[0155] The valve portion 92 may also have a spring. In this example, the valve portion 92 has a first spring 133 and a second spring 134. The first spring 133 and the second spring 134 press the float 94 against the retainer 93. As a result, the float 94 can be easily moved. In addition, the first spring 133 and the second spring 134 can reduce the possibility of the float 94 sticking to the retainer 93.

[0156] The first spring 133 presses the float 94 toward the outflow surface 102. The first spring 133 is located between the retainer 93 and the float 94. The first spring 133 is in contact with the retainer 93 and the float 94. Specifically, the first spring 133 is in contact with the stepped surface 106 and the first opposing surface 121.

[0157] The second spring 134 presses the float 94 toward the inflow surface 101. The second spring 134 is located between the retainer 93 and the float 94. The second spring 134 contacts the float 94 and the sealing member 95. Specifically, the second spring 134 contacts the outflow surface 102 and the sealing member 95.

[0158] like Figure 10 As shown, the discharge mechanism 91 has a first connector 136. The first connector 136 is mounted on the valve portion 92. More specifically, the first connector 136 is mounted on the retainer 93. The first connector 136 is connected to the outflow channel 98.

[0159] The outlet mechanism 91 has a first outlet tube 137. The first outlet tube 137 is, for example, a tube. The first outlet tube 137 is connected to a first connector 136. In this example, the first outlet tube 137 extends in the storage space 65.

[0160] The discharge mechanism 91 has a sub-filter section 141. The sub-filter section 141 is connected to the first discharge pipe 137. That is, the sub-filter section 141 is located downstream of the valve section 92 in the discharge mechanism 91. By positioning the sub-filter section 141 downstream of the valve section 92, it is easier to return the air entering the valve section 92 to the receiving chamber 41. The sub-filter section 141 is located in the receiving space 65. The sub-filter section 141 is connected to the valve section 92 via the first connector 136 and the first discharge pipe 137.

[0161] The sub-filter section 141 is configured to capture foreign matter. The sub-filter section 141 has, for example, a bladder 142 and a sub-filter 143. The bladder 142 houses the sub-filter 143. Liquid passes through the bladder 142, thereby flowing from the container 32 to the connector 21.

[0162] Sub-filter 143 is, for example, a non-woven fabric filter. Sub-filter 143 traps foreign matter from the liquid passing through the sealed chamber 142. In this example, sub-filter 143 is a four-stage filter.

[0163] Sub-filter section 141 is configured to capture finer foreign objects compared to filter section 81. That is, the capture capacity of sub-filter section 141 is higher than that of filter section 81. The capture capacity of sub-filter section 141 depends on sub-filter 143. The capture capacity of filter section 81 depends on the filter with the smallest pore size among its own filters. Therefore, the pore size of sub-filter 143 is finer than that of second filter 84. In other words, the particle size of sub-filter 143 is smaller than that of second filter 84. The particle size of sub-filter 143 is, for example, 5 micrometers.

[0164] When liquid is discharged from the liquid reservoir 31 to the liquid dispensing device 11, the required collection capacity differs between the filter section 81 and the sub-filter section 141. In the filter section 81, a high liquid flow rate is required to smoothly inject the liquid into the container 32. Therefore, the filter section 81 only needs to collect foreign matter to the extent that the valve section 92 can operate normally. In the sub-filter section 141, foreign matter is required to be collected in a manner that allows the dispensing section 13 to operate normally.

[0165] Generally, the ejector section 13 is more precise than the valve section 92. Therefore, the liquid flowing in the ejector section 13 needs to be filtered more finely than the liquid flowing in the valve section 92. The filter section 81 filters the liquid to ensure the valve section 92 operates properly. The sub-filter section 141 filters the liquid to ensure the ejector section 13 operates properly. By capturing foreign matter in both the filter section 81 and the sub-filter section 141, liquid can be easily injected while properly capturing foreign matter.

[0166] If the filter section 81 has a filter with finer pores, such as the sub-filter 143, then the sub-filter section 141 is unnecessary. However, in such a case, the liquid injection would be halted because the liquid needs to pass through the fine-pore filter in the filter section 81.

[0167] The outlet mechanism 91 has a second outlet pipe 146. The second outlet pipe 146 is, for example, a tube. The second outlet pipe 146 is connected to the sub-filter section 141. In this example, the second outlet pipe 146 is connected to the capsule 142.

[0168] The discharge mechanism 91 has a second connector 147. The second connector 147 is connected to the second discharge tube 146.

[0169] The discharge mechanism 91 includes a discharge section 151. The discharge section 151 is connected to the second connector 147. The discharge section 151 is located downstream of the sub-filter section 141 in the discharge mechanism 91. The discharge section 151 is connected to the sub-filter section 141 via the second discharge pipe 146 and the second connector 147. The discharge section 151 is connected to the connecting body 21. That is, the discharge section 151 is connected to the liquid ejection device 11. The discharge section 151 is provided across the inside and outside of the storage space 65.

[0170] The outlet 151 forms the downstream end of the outlet mechanism 91. In this example, in the outlet mechanism 91, the valve 92, the first connector 136, the first outlet pipe 137, the sub-filter 141, the second outlet pipe 146, the second connector 147, and the outlet 151 are arranged sequentially. The positions of the valve 92 and the sub-filter 141 can also be reversed. For example, the valve 92 can also be located downstream of the sub-filter 141. The valve 92 only needs to be located between the outlet 43 and the outlet 151. Similarly, the sub-filter 141 only needs to be located between the outlet 43 and the outlet 151. The outlet 151 outlets the liquid guided from the outlet 43 to the liquid spraying device 11.

[0171] The outlet 151 is located on the forward-facing surface of the liquid reservoir 31. In this example, the outlet 151 is mounted on the frame 53. The outlet 151 is mounted on the mounting plate 61.

[0172] like Figure 20 As shown, the outlet 151 has a first component 152, a fixing plate 153, and a second component 154. Liquid flows from the container 32 to the connector 21 by passing through the first component 152 and the second component 154.

[0173] The first component 152 is a component mounted on the fixing plate 153. The first component 152 is connected to the second connector 147.

[0174] The first component 152 has a base portion 155 and an insertion portion 156. The base portion 155 is the portion that connects to the second connector 147. The base portion 155 is fixed to the fixing plate 153. The insertion portion 156 is the portion that extends from the base portion 155. The insertion portion 156 is inserted into the fixing plate 153.

[0175] The insertion portion 156 is cylindrical in shape. The insertion portion 156 has a fitting portion 157. The fitting portion 157 is the portion that fits into the fixing plate 153. The fitting portion 157 is located at the base end of the insertion portion 156.

[0176] The insertion portion 156 has a plurality of hooks 158. The plurality of hooks 158 are located at the top of the insertion portion 156. The plurality of hooks 158 are components for connecting the first component 152 and the second component 154. The first component 152 and the second component 154 are connected by engaging the plurality of hooks 158 onto the second component 154.

[0177] An insertion hole 159 is provided on the fixing plate 153. An insertion portion 156 is inserted into the insertion hole 159. The diameter of the insertion hole 159 is substantially the same as the diameter of the fitting portion 157. Therefore, when the insertion portion 156 is inserted into the insertion hole 159, the fitting portion 157 is engaged in the insertion hole 159. Thus, the first component 152 is positioned relative to the fixing plate 153. With the fitting portion 157 engaged in the insertion hole 159, the first component 152 is fixed to the fixing plate 153, for example, by screws. The fixing plate 153 is mounted on the mounting plate 61. Thus, the outlet portion 151 is fixed to the mounting plate 61.

[0178] The second component 154 is a component that connects to the connector 21. The second component 154 has a connecting tube 161 and a connecting portion 162. The connecting tube 161 is inserted into the connector 21. Liquid is discharged from the connecting tube 161 to the connector 21. The connecting portion 162 is a portion that connects to the first component 152. An insertion portion 156 is inserted into the connecting portion 162.

[0179] like Figure 21 as well as Figure 22 As shown, a plurality of connection ports 163 are formed on the connecting portion 162. Each connection port 163 corresponds to a plurality of hooks 158. When the insertion portion 156 is inserted into the connecting portion 162, the hooks 158 are located within the connection ports 163. Thus, the hooks 158 are engaged in the connecting portion 162. By engaging the hooks 158 in the connecting portion 162, the first component 152 and the second component 154 are connected.

[0180] like Figure 23 As shown, the outlet section 151 may also have a circuit board 164. The circuit board 164 is a board used to detect the connection between the outlet section 151 and the connector 21. The circuit board 164 is connected to the connector 27. The circuit board 164 is mounted on the second component 154. For example, the circuit board 164 is located above the connector 161. This reduces the possibility of liquid dripping from the connector 161 coming into contact with the circuit board 164.

[0181] The circuit board 164 has one or more connection terminals 165. The connection terminal 165 is a terminal that connects to the connection portion 27. The connection terminal 165, along with the connector 21, connects to the outlet portion 151 and contacts the connection portion 27. Through the contact between the connection terminal 165 and the connection portion 27, the circuit board 164 and the connection portion 27 are connected together. Thus, the liquid ejection device 11 detects whether it has been connected to the liquid collection body 31.

[0182] Next, the function and effects of the above-described implementation methods will be explained.

[0183] (1) The liquid receiving body 31 includes a container 32 and a filter section 81. The container 32 receives the liquid, and the filter section 81 captures foreign matter. The container 32 has an inlet 42 and an outlet 43. The inlet 42 is used to inject liquid into the container 32, and the outlet 43 is used to drain liquid from the container 32. The filter section 81 is located at the inlet 42. According to the above structure, the filter section 81 reduces the possibility of foreign matter in the liquid or air entering the container 32 through the inlet 42.

[0184] (2) The filter section 81 has a first filter 83 as a primary filter and a second filter 84 as a secondary filter through which liquid that has passed through the primary filter passes. The pores of the first filter 83 are coarser than the pores of the second filter 84.

[0185] There is a possibility that the liquid injected through inlet 42 may scatter upon contact with the filter. In particular, since the finer the filter pores, the more difficult it is for the liquid to pass through the filter, the liquid is more likely to remain in the filter. In such cases, there is a possibility that the liquid may scatter due to being bounced back by the filter.

[0186] According to the above structure, the liquid injected from the inlet 42 contacts the first filter 83 before the second filter 84. Since the pores of the first filter 83 are larger, the liquid easily passes through it. That is, the liquid is less likely to remain in the first filter 83. Therefore, compared to the case where the liquid contacts the second filter 84 before the first filter 83, the possibility of liquid scattering can be reduced.

[0187] (3) The liquid collection body 31 has a discharge section 151, which is connected to the liquid dispensing device 11. The discharge section 151 is located on the front-facing surface of the liquid collection body 31, and discharges the liquid discharged from the discharge port 43 to the liquid dispensing device 11. According to the above structure, the user can easily connect the discharge section 151 and the liquid dispensing device 11 from the front of the liquid collection body 31.

[0188] (4) The container 32 has a front wall 33 and a visual confirmation section 44 for visually confirming the liquid level of the contained liquid. The inlet 42 is located on the upper side and the front side of the container 32. The visual confirmation section 44 is located on the front wall 33.

[0189] According to the above structure, since the injection port 42 is located on the front side of the container 32, the user can easily inject liquid from a position opposite to the front wall 33. In addition, since the visual confirmation section 44 is located on the front wall 33, the user can confirm the liquid level in the container 32 through the visual confirmation section 44 while injecting liquid.

[0190] (5) The liquid container 31 has a cover 52 that covers the container 32 in such a way that at least the visual confirmation part 44 is exposed.

[0191] Based on the above structure, the cover 52 can protect the container 32 without impairing the function of the visual confirmation unit 44.

[0192] (6) The liquid container 31 includes a valve 92 and a frame 53. The valve 92 is located between the outlet 43 and the outlet 151 and is openable and closable. The frame 53 supports the container 32 from below. The frame 53 defines a storage space 65 below the container 32 that can be accessed and operated from the outside. The valve 92 is located in the storage space 65. According to the above structure, in the event of a malfunction in the valve 92, it is easy to approach and operate the valve 92. Therefore, it is easy to maintain the valve 92.

[0193] (7) The liquid receiving body 31 has a sub-filter section 141, which is located between the outlet 43 and the outlet 151. The sub-filter section 141 is located in the receiving space 65.

[0194] According to the above structure, in the event of a malfunction in the sub-filter section 141, it is easy to approach and operate the sub-filter section 141. Therefore, it is easy to maintain the sub-filter section 141.

[0195] (8) The frame 53 has a mounting plate 61 on which an outlet 151 is mounted. The mounting plate 61 is located below the front wall 33 and extends in connection with the front wall 33. The container 32 has a lower wall 36. An outlet 43 opens on the lower wall 36 and is located at the rear of the container 32.

[0196] Based on the above structure, since the outlet 43 is located at the rear of the container 32, a space is created between the outlet 151 and the outlet 43 in the storage space 65. Therefore, it is easy to store the valve 92 and the sub-filter 141 in the storage space 65.

[0197] (9) Cover 52 can also cover the storage space 65.

[0198] According to the above structure, the valve section 92 and the sub-filter section 141 can be protected by the cover 52.

[0199] (10) The cover 52 is fixed to the frame 53.

[0200] When the cover 52 is fixed to the container 32, for example, when a force is applied to the cover 52, that force is easily transmitted to the container 32. In this respect, according to the structure described above, since the cover 52 is fixed to the frame 53, even if a force is applied to the cover 52, that force is difficult to transmit to the container 32. Therefore, the container 32 can be effectively protected.

[0201] (11) The valve 92 has a float 94 that moves according to the amount of liquid remaining in the container 32, and is opened and closed by moving the float 94.

[0202] Based on the above structure, the valve section 92 can open and close without the need for electrical control. Therefore, the structure of the valve section 92 can be simplified.

[0203] (12) The cover 52 has a gripping part 59 for the user to hold.

[0204] Based on the above structure, the liquid container 31 is easy to move for the user.

[0205] (13) The liquid dispensing device 11 includes a connector 21 that connects to the outlet section 151. The connector 21 has a connector 27 for detecting the connection with the liquid reservoir 31. The outlet section 151 has a circuit board 164 that connects to the connector 27. The circuit board 164 has a connection terminal 165 that contacts the connector 27. According to the above structure, the liquid dispensing device 11 can detect the connection with the liquid reservoir 31 through the connection of the connector 27 and the circuit board 164.

[0206] (14) The collection capacity of the sub-filter section 141 is higher than that of the filter section 81.

[0207] Generally, the ejector section 13 is more precise than the valve section 92. Therefore, the liquid flowing in the ejector section 13 needs to be filtered more finely than the liquid flowing in the valve section 92. For example, when using the filter section 81 to capture foreign matter to ensure the proper operation of the ejector section 13, a filter with finer pores needs to be applied to the filter section 81. In such a case, foreign matter is properly captured by the filter section 81, but the liquid injection will stop.

[0208] According to the above structure, foreign matter is captured in stages through the filter section 81 and the sub-filter section 141. The sub-filter section 141 has a finer pore size, allowing a coarser pore size filter to be used in the filter section 81. By capturing foreign matter in the filter section 81 to ensure the normal operation of the valve section 92, and by capturing foreign matter in the sub-filter section 141 to ensure the normal operation of the ejection section 13, liquid injection becomes smooth while appropriately capturing foreign matter.

[0209] This embodiment can be modified and implemented in the following ways. This embodiment and the following modifications can be combined with each other within the scope of technical inconsistency.

[0210] ·like Figure 24 As shown, the retaining member 82 can also be configured to function as a filter but not as a filter itself, and only as a component for holding the filter. For example, the filter section 81 can also be configured to have a primary filter, a secondary filter, and a retaining member 82 that does not function as a filter. Alternatively, the filter section 81 can also be configured to have a primary filter and a retaining member 82 that does not function as a filter.

[0211] Alternatively, the filter section 81 can be configured to have a primary filter and a retaining member 82 that functions as a secondary filter. In this case, the pore size of the retaining member 82 is finer than that of the primary filter.

[0212] ·like Figure 25 As shown, the structure can also be configured such that the cage 93 and the float 94 are sealed through the contact between the first contact portion 111 and the sealing member 95. That is, the cage 93 may not have the second contact portion 112. Even in this case, the tilting of the float 94's posture can be accommodated by the displacement space 127.

[0213] ·like Figure 26 As shown, the mounting portion 124 can also be configured to receive the portion that contacts the first contact portion 111 in the sealing member 95. That is, the mounting portion 124 can also be configured without marking the displacement space 127. In this case, the tilting of the float 94's posture can also be addressed by the first contact portion 111 and the second contact portion 112.

[0214] The injection port 42 is not limited to opening on the upper wall 35; it can also open on, for example, the front wall 33. The injection port 42 can open on the rear wall 34, the right side wall 37, or the left side wall 38. The injection port 42 only needs to open on the upper side of the container 32.

[0215] The outlet 43 is not limited to opening on the lower wall 36; it can also open on, for example, the front wall 33. The inlet 42 can open on the rear wall 34, the right side wall 37, or the left side wall 38. The outlet 43 only needs to open on the lower side of the container 32.

[0216] Alternatively, it can be configured such that only the portion of container 32 exposed through the opening 58 is made of transparent or translucent resin.

[0217] • The upper wall 35 may also include an inclined wall. An inclined wall is, for example, a wall facing upward and forward. An inclined wall may be a wall facing upward and backward, a wall facing upward and right, or a wall facing upward and left. Note that the entrance 42 may also be an opening in the inclined wall.

[0218] The valve 92 can also be a solenoid valve that is electrically opened and closed based on the remaining amount of liquid contained in the container 32. In this case, the liquid container 31 has, for example, a sensor that detects the remaining amount of liquid contained in the container 32. The valve 92 opens and closes based on the sensor's detection result.

[0219] The valve section 92 can also be located outside the storage space 65.

[0220] • The sub-filter section 141 can also be located outside the storage space 65.

[0221] The following text describes the technical concepts and effects that can be learned from the above-described implementation methods and variations.

[0222] (A) A liquid receiving body is connected to a liquid dispensing device and includes: a container for receiving the liquid; and a filter section for capturing foreign matter. The container has an inlet and an outlet, the inlet for injecting liquid into the container, and the outlet for dispensing liquid from the container. The filter section is located at the inlet. According to this structure, the filter section reduces the possibility of foreign matter in the liquid or air entering the container through the inlet.

[0223] (B) In the above-mentioned liquid collection body, the filter section may also be configured to have a primary filter and a secondary filter through which the liquid passing through the primary filter passes, wherein the pore size of the primary filter is larger than that of the secondary filter.

[0224] There is a possibility that the liquid injected from the inlet may scatter upon contact with the filter. In particular, the finer the filter pores, the more difficult it is for the liquid to pass through, thus making it more likely to stagnate within the filter. In such cases, there is a possibility that the liquid may scatter due to being bounced off the filter.

[0225] According to the above structure, the liquid injected through the inlet contacts the primary filter before the secondary filter. Because the primary filter has larger pores, the liquid easily passes through it. That is, the liquid is less likely to remain in the primary filter. Therefore, compared to the case where the liquid contacts the secondary filter before the primary filter, the possibility of liquid scattering can be reduced.

[0226] (C) Alternatively, the liquid container may have a discharge section connected to the liquid ejection device. The discharge section is located on the forward-facing surface of the liquid container and discharges liquid from the discharge port to the liquid ejection device. With this structure, the user can easily connect the discharge section and the liquid ejection device from the front of the liquid container.

[0227] (D) In ​​the above-mentioned liquid container, the container may also be configured such that the container has a front wall and a visual confirmation part for visually confirming the liquid level of the liquid contained therein, the injection port is located on the upper side and the front side of the container, and the visual confirmation part is located on the front wall.

[0228] With the above structure, since the injection port is located at the front of the container, the user can easily inject liquid from a position opposite the front wall. Furthermore, since the visual confirmation section is located on the front wall, the user can confirm the liquid level inside the container while injecting liquid.

[0229] (E) Alternatively, the liquid container may be provided with a cover that covers the container in such a way that at least the visual confirmation part is exposed.

[0230] Based on the above structure, the container can be protected with a cover without impairing the function of the visual confirmation section.

[0231] (F) Alternatively, the liquid container may include: a valve located between the outlet and the outlet portion, capable of being opened and closed; and a frame supporting the container from below, the frame defining a storage space below the container that can be accessed and operated from the outside, the valve located within the storage space. According to this structure, in the event of a malfunction in the valve, it is easy to approach and operate the valve. Therefore, maintenance of the valve is easy.

[0232] (G) Alternatively, the liquid receiving body may be provided with a sub-filter section located between the outlet and the outlet, and the sub-filter section is located in the receiving space.

[0233] Based on the above structure, in the event of a malfunction in the sub-filter section, it is easy to approach and operate the sub-filter section. Therefore, maintenance of the sub-filter section is easy.

[0234] (H) In the above-described liquid container, the frame may also be configured such that the outlet is mounted on a mounting plate located below the front wall and extending in connection with the front wall, the container has a lower wall, the outlet is opened on the lower wall and located at the rear of the container.

[0235] Based on the above structure, since the outlet is located at the rear of the container, space is created between the outlet section and the outlet within the storage space. Therefore, it is easy to store the valve section and the sub-filter section within the storage space.

[0236] (I) In the above-mentioned liquid container, the cover may also be configured to cover the storage space.

[0237] Based on the above structure, the valve section and the sub-filter section can be protected by the cover.

[0238] (J) In the aforementioned liquid container, the cover may also be fixed to the frame. When the cover is fixed to the container, for example, when a force is applied to the cover, that force is easily transmitted to the container. Regarding this, according to the above structure, since the cover is fixed to the frame, even if a force is applied to the cover, that force is difficult to transmit to the container. Therefore, the container can be effectively protected.

[0239] (K) In the above-described liquid containment body, the valve may also be configured such that the valve part has a float that moves according to the remaining amount of liquid contained in the container, and opens and closes according to the movement of the float.

[0240] Based on the above structure, the valve can open and close without the need for electrical control. Therefore, the structure of the valve can be simplified.

[0241] (L) In the above-mentioned liquid container, the cover may also be configured to have a gripping part for the user to hold.

[0242] Based on the above structure, the handling of the liquid container becomes easy for the user.

[0243] (M) In the above-described liquid collection body, the liquid dispensing device may also be configured such that it includes a connector connected to the outlet portion, the connector having a connection portion for detecting the connection with the liquid collection body, the outlet portion having a circuit board connected to the connector portion, and the circuit board having a connection terminal that contacts the connector portion. According to the above structure, the liquid dispensing device can detect the connection with the liquid collection body through the connection between the connector portion and the circuit board.

[0244] (N) In the above-described liquid collection body, the liquid ejection device may also be configured such that the liquid ejection device has an ejection part for ejecting liquid, and the liquid collection body includes: an outlet part connected to the liquid ejection device; a valve part located between the outlet and the outlet part and capable of opening and closing; and a sub-filter part located between the valve part and the outlet part. The outlet part ejects liquid from the outlet to the liquid ejection device, and the sub-filter part has a higher collection capacity than the filter part.

[0245] Generally, the ejector section is more precise than the valve section. Therefore, the liquid flowing in the ejector section needs to be filtered more finely than the liquid flowing in the valve section. For example, if a filter section is used to capture foreign matter in order to make the ejector section operate normally, a filter with finer pores needs to be applied to the filter section. In such a case, foreign matter is properly captured by the filter section, but the liquid injection will stop.

[0246] Based on the above structure, foreign matter can be captured in stages through the filter section and the sub-filter section. By having the sub-filter section have a filter with finer pores, a filter with coarser pores can be applied to the filter section. The filter section captures foreign matter to ensure the valve section operates normally, and the sub-filter section captures foreign matter to ensure the ejection section operates normally, thereby ensuring smooth liquid injection while properly capturing foreign matter.

[0247] Symbol Explanation

[0248] 11…Liquid ejection device; 12…Housing; 13…Ejection section; 14…Supply mechanism; 15…Nozzle; 21…Connector; 22…Supply pipe; 23…Pump; 24…Degassing module; 25…Storage section; 26…Pressure regulating valve; 27…Connection; 28…Supply valve; 31…Liquid receiving body; 32…Container; 33…Front wall; 34…Rear wall; 35…Upper wall; 36…Lower wall; 37…Right side wall; 38…Left side wall; 41…Receiving chamber; 42…Inlet; 43…Outlet; 44…Visual confirmation section; 51…Protective component; 52…Cover; 53…Frame; 54…Front plate; 55…Upper plate; 56…Right plate; 57… Left plate; 58…exposed opening; 59…grip; 61…mounting plate; 62…protective plate; 63…top plate; 64…bottom plate; 65…storage space; 66…opening; 67…insertion port; 68…mounting port; 71…cushioning material; 72…protective cover; 73…hinge; 74…sealing ring; 75…atmospheric opening; 76…locking mechanism; 81…filter section; 82…retaining component; 83…first filter; 84…second filter; 85…edge portion; 86…protruding portion; 91…outlet mechanism; 92…valve section; 93…retainer; 94…float; 95…sealing component; 96…liquid chamber; 97…inflow channel; 9 7A…First inflow channel; 97B…Second inflow channel; 98…Outflow channel; 99…Medium; 101…Inflow surface; 102…Outflow surface; 103…Inner peripheral surface; 104…Forming surface; 105…First inner surface; 106…Stepped surface; 107…Second inner surface; 108…Inclined surface; 109…Defining surface; 111…First contact portion; 112…Second contact portion; 121…First opposing surface; 122…Second opposing surface; 123…Outer peripheral surface; 124…Mounting portion; 125…First rib; 126…Second rib; 127…Displacement space; 128…Retreat groove; 131…Guiding component; 132…Insertion portion; 133…First spring; 134…Second spring; 136…First connector; 137…First outlet tube; 141…Sub-filter section; 142…Bucket; 143…Sub-filter; 146…Second outlet tube; 147…Second connector; 151…Outlet section; 152…First component; 153…Fixing plate; 154…Second component; 155…Base section; 156…Insertion section; 157…Matching section; 158…Hook; 159…Insertion hole; 161…Connecting tube; 162…Connecting section; 163…Connecting port; 164…Circuit board; 165…Connecting terminal; L1…First imaginary line; L2…Second imaginary line.

Claims

1. A liquid container, characterized in that, The liquid receiving body is connected to a liquid ejection device that ejects liquid, and includes: A container for holding liquids; The filter section is used to capture foreign objects; The outlet section is connected to the liquid ejection device. The container has an inlet and an outlet. The inlet is used to inject liquid into the container. The outlet is used to drain liquid from the container. The filter section is located at the injection port. The container has a front wall, a rear wall opposite to the front wall, and a visual inspection section for visually inspecting the liquid level of the contained liquid. The injection port is located on the upper side and front side of the container. The visual confirmation unit is located on the front wall. The outlet is located on the surface facing forward in the direction from the rear wall to the front wall within the liquid receiving body, and directs the liquid discharged from the outlet to the liquid ejection device. The liquid container also includes a cover and a frame. The cover covers the container in such a way that at least the visual confirmation section is exposed. The frame supports the container from below. The cover is fixed to the frame.

2. The liquid containment body as described in claim 1, characterized in that, The filter section has a primary filter and a secondary filter through which the liquid that has passed through the primary filter passes. The pore size of the primary filter is coarser than that of the secondary filter.

3. The liquid containment body as described in claim 1, characterized in that, It includes a valve section located between the outlet and the outlet portion, and is capable of opening and closing. The frame defines a storage space below the container that can be accessed and operated from the outside. The valve section is located in the storage space.

4. The liquid containment body as described in claim 3, characterized in that, It includes a sub-filter section located between the outlet and the outlet section. The sub-filter section is located in the storage space.

5. The liquid containment body as described in claim 4, characterized in that, The frame has a mounting plate on which the outlet section is mounted. The mounting plate is located below the front wall and extends in a manner connected to the front wall. The container has a lower wall. The outlet is an opening on the lower wall and located at the rear of the container.

6. The liquid containment body as described in claim 4, characterized in that, The cover covers the storage space.

7. The liquid containment body as described in claim 3, characterized in that, The valve section has a float that moves according to the remaining amount of liquid contained in the container. The valve is opened and closed by moving the float.

8. The liquid containment body as described in claim 1, characterized in that, The cover has a grip for the user to hold.

9. The liquid containment body as described in claim 1, characterized in that, The liquid ejection device includes a connector that is connected to the discharge section. The connector has a connection portion for detecting the connection with the liquid reservoir. The output section has a circuit board that is connected to the connection section. The circuit board has connection terminals that contact the connection portion.

10. The liquid containment body as described in claim 1, characterized in that, The liquid ejection device includes an ejection section for ejecting liquid. The liquid container has the following features: A valve section is located between the outlet and the outlet section, and is capable of being opened and closed; A sub-filter section is located between the valve section and the outlet section. The trapping capacity of the sub-filter section is higher than that of the filter section.

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