Liquid ejecting head and liquid ejecting apparatus

Abstract

The invention relates to a liquid ejecting head and a liquid ejecting apparatus. The liquid ejecting head includes a main body having a first connected portion and a second connected portion, a tank stored in the main body, a first surface provided with the first connected portion, and a second surface provided with the second connected portion, and a plurality of sealing members interposed between the first connecting portion and the first connected portion and between the second connecting portion and the second connected portion. One of the first connecting portion and the first connected portion is a first protrusion on which the sealing member is externally fitted, the other is a first recess in which the sealing member is internally fitted, and one of the second connecting portion and the second connected portion is a second protrusion on which the sealing member is externally fitted. And the other is a second recess in which the sealing member is embedded.

Description

Technical Field

[0001] This disclosure relates to a liquid jet head and a liquid jetting device including the liquid jet head. Background Technology

[0002] As is well known, in some conventional liquid jetting devices that use liquid jetting heads (such as ink) to record images on recording media, a secondary canister component for storing liquid is provided on the liquid jetting head. For example, when the liquid jetting head is movable (capable of scanning), the secondary canister component moves with the liquid jetting head and is therefore fixed to the body of the liquid jetting head.

[0003] Japanese Patent Application Publication No. 2022-15694 discloses a liquid injection device including a liquid injection head, wherein the auxiliary tank component is fixed to the main body by a plurality of screws. Summary of the Invention

[0004] When using fasteners such as screws or similar fasteners to secure the auxiliary tank components to the main body, an increase in the number of fasteners may lead to an increase in the time required for the fastening work and an increase in costs.

[0005] This disclosure aims to provide a liquid injection head with improved reliability at the connection between the body and the tank housed within the body.

[0006] According to one aspect of this disclosure, the liquid injection head of this disclosure includes:

[0007] A body having a first connected portion configured to allow liquid to pass through therethrough and a second connected portion configured to allow liquid to pass through therethrough;

[0008] A can, stored within the body, includes a liquid storage section configured to store liquid therein, a first surface having a first connecting portion, and a second surface having a second connecting portion, the first connecting portion being connected to the first connected portion and configured to allow liquid to pass through therein, the second connecting portion being connected to the second connected portion and configured to allow liquid to pass through therein, the second surface being non-parallel to the first surface; and

[0009] Multiple sealing members are inserted between the first connecting portion and the first connected portion, and between the second connecting portion and the second connected portion.

[0010] Wherein, one of the first connecting portion and the first connected portion is a first protrusion on which the sealing member is externally embedded, and the other is a first recess on which the sealing member is internally embedded; and one of the second connecting portion and the second connected portion is a second protrusion on which the sealing member is externally embedded, and the other is a second recess on which the sealing member is internally embedded.

[0011] According to this disclosure, a liquid injection head can be provided that has improved reliability at the connection between a body and a tank housed within the body.

[0012] The features of this disclosure will become apparent from the accompanying drawings and the following description of embodiments. The following description of embodiments is by way of example. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the construction of a liquid jetting device according to one embodiment;

[0014] Figure 2 This is a perspective view of the liquid injection head according to this embodiment;

[0015] Figure 3 This is an exploded perspective view of the liquid injection head according to this embodiment;

[0016] Figure 4 This is an exploded perspective view of the liquid injection head according to this embodiment;

[0017] Figure 5 This is a cross-sectional view of the liquid injection head according to this embodiment;

[0018] Figure 6 This is a detailed cross-sectional view of the first connection portion of the liquid injection head according to this embodiment;

[0019] Figure 7 This is a detailed cross-sectional view of the second connection portion of the liquid injection head according to this embodiment;

[0020] Figure 8 It is based on an exploded perspective view of a liquid injection head; and

[0021] Figure 9 It is based on an exploded three-dimensional diagram of a liquid jet head in a comparative proportion. Detailed Implementation

[0022] In the following description, various exemplary embodiments (examples), features, and aspects of the present disclosure will be given with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc., of the components described in the various embodiments may be suitably varied depending on the construction of the device to which the present disclosure is applied, various conditions, etc. Therefore, the dimensions, materials, shapes, relative arrangements, etc., of the components described in the various embodiments are not intended to limit the scope of the present disclosure to the following embodiments.

[0023] In this article, the term "printing" (also known as "recording" or "printing") refers not only to the formation of meaningful information (such as characters and graphics), but also to the formation of information regardless of whether the information is meaningful or not. Furthermore, the term also encompasses the formation of images, patterns, etc., on a recording medium, or the processing of that medium, regardless of whether the result is expressed in a form perceptible to human vision.

[0024] Comparative Example

[0025] First, before describing the embodiments of this disclosure, the construction of a liquid injection head 100 according to a comparative example will be described. The liquid injection head 100 according to the comparative example is a circulating type liquid injection head capable of circulating liquid around the injection port of the liquid injection.

[0026] Figure 8 and Figure 9 The construction of a liquid injection head 100 according to a comparative example is shown. Figure 8 It is an exploded perspective view of the liquid injection head 100 as shown in the comparative example. Figure 9 It is based on the comparative example of the liquid injection head 100 from a different... Figure 8 An exploded stereoscopic view viewed from an angle.

[0027] Liquid supply and recovery flow paths are provided in the nozzle array of the liquid ejector head 100 to allow liquid circulation through the pressure chamber corresponding to the nozzle. Multiple auxiliary tank components, each including a circulation pump, are installed in the liquid ejector head 100, and the liquid supply and recovery flow paths in the liquid ejector head 100 are formed through the main body and the auxiliary tank components. With this configuration, the discharge of air bubbles in the flow path and the increase in liquid viscosity near the nozzle and within the flow path due to moisture evaporation from the nozzle can be suppressed during printing.

[0028] Multiple auxiliary canisters 108, each corresponding to a different color ink, are installed in the liquid injection head 100. The multiple auxiliary canisters 108 are housed within a housing member 102, which forms the main body of the liquid injection head 100.

[0029] A liquid jetting module 101 is mounted on a housing member 102, and the liquid jetting module has multiple jetting nozzles for jetting ink. The housing member 102 is provided with a first liquid supply section 103 that communicates with the liquid jetting module 101, and a second liquid supply section 104 that connects to the main body of the liquid jetting device.

[0030] The auxiliary tank component 108 is provided with a first opening 109 connected to the first liquid supply section 103 and a second opening 110 communicating with the second liquid supply section 104. A first sealing member 105 is inserted at the connection between the first liquid supply section 103 and the first opening 109. Simultaneously, a second sealing member 106 is inserted at the connection between the second liquid supply section 104 and the second opening 110. The auxiliary tank component 108 is fastened and fixed to the housing component 102 by a plurality of screws 112.

[0031] In the liquid injection head 100, the sealing surfaces of the first liquid supply section 103 and the second liquid supply section 104 are not on the same plane in the pressing direction. In the liquid injection head 100, dimensional errors may occur to some extent due to component tolerances in the housing member 102 and the auxiliary tank member 108. Both the first liquid supply section 103 and the second liquid supply section 104 achieve sealing by clamping the sealing member in the pressing direction; therefore, a sealing height capable of absorbing dimensional errors is required. In such a configuration, some parts experience greater pressure than others, resulting in uneven contact pressure and almost no margin for sealing reliability.

[0032] The flow path within the second liquid supply section 104 is formed to bend at approximately a right angle at a certain point along the flow path. The second liquid supply section 104 is connected to communicate with a liquid supply needle disposed in the body of the liquid injection device. A plate member 111 is fixed to the surface of the housing member 102 by a plurality of screws 113, on which the second liquid supply section 104 opens. A third sealing member 107 is clamped between the housing member 102 and the plate member 111 at a portion corresponding to the second liquid supply section 104. More specifically, one end of the second liquid supply section 104 connected to the auxiliary tank member 108 is sealed by a second sealing member 106, and the other end of the liquid injection device connected to the body is sealed by a third sealing member 107.

[0033] When the flow path is formed into a right-angle bend in this manner, burrs or the like may be generated at the joint of the flow path during the molding process of the housing component 102. When multiple types of sealing components (each fixed by screws) are used, as in the comparative example, the number of parts increases, which may lead to higher manufacturing costs. In addition, the number of hours for screw tightening increases, which may lead to an increase in the time required for fixing work.

[0034] Example

[0035] Embodiments of this disclosure will now be described with reference to a liquid jetting apparatus 50 and a liquid jetting head 1 disposed in the liquid jetting apparatus 50, which jets ink, as a recording liquid, onto a recording medium P, such as paper or sheet material, to record images. This disclosure is also applicable to liquid jetting heads that jet liquids other than ink, and other liquid jetting apparatuses.

[0036] Liquid jetting equipment

[0037] Figure 1 This is a schematic diagram illustrating the construction of the liquid jetting apparatus 50 according to this embodiment. The liquid jetting apparatus 50 includes a liquid jetting head 1. The liquid jetting apparatus 50 of this embodiment is a serial scanning type inkjet recording apparatus that jets ink from the liquid jetting head 1 to record images on a recording medium P. The liquid jetting head 1 is mounted on a carrier 53, and the carrier 53 moves along a guide shaft 51 in the main scanning direction X. More specifically, the liquid jetting head 1 is configured to scan (move) relative to the body of the liquid jetting apparatus 50 in the main scanning direction X.

[0038] The liquid jetting device 50 includes a transport section for transporting a recording medium P in a sub-scanning direction Y that intersects the main scanning direction X. The transport section includes transport members for transporting the recording medium P, such as transport rollers 55, 56, 57, and 58. In this embodiment, the main scanning direction X (the direction of movement of the liquid jetting head 1) and the sub-scanning direction Y (the direction of transport of the recording medium P) are orthogonal to each other.

[0039] Sub-tank unit 3 is mounted on liquid jet head 1 and supplies ink for each type of ink. Electrical wiring, ink, and air ducts required for printing are connected to carrier 53 via guide 59. Sub-tank unit 3 contains ink of multiple colors, and liquid jet head 1 is configured to perform high-quality full-color printing using multiple colors of ink.

[0040] A cap component (not shown) is positioned off the delivery path of the recording medium P. When not recording, the cap component moves relative to the face surface of the liquid jet head 1 to prevent the jet nozzle from drying out and to perform suction operations for filling or retrieval.

[0041] Liquid injection head

[0042] The structure of the liquid injection head 1 will be described in detail. Figure 2 This is a perspective view of the liquid injection head 1 according to this embodiment. Figure 3 This is an exploded perspective view of liquid injection head 1. Figure 4 It is a liquid injection head 1 from different Figure 3 An exploded stereoscopic view viewed from an angle.

[0043] In the following description, the orientation of the liquid jet head 1 will be described with reference to its installation state in the liquid jetting device 50. In this case, the direction parallel to the main scanning direction X is defined as the first direction D1, the direction parallel to the sub-scanning direction Y is defined as the second direction D2, and the direction intersecting the first direction D1 and the second direction D2 is defined as the third direction D3. In this embodiment, the first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other. Furthermore, the third direction D3 is a direction substantially parallel to the liquid jetting direction of the liquid jet head 1.

[0044] The liquid injection head 1 includes a secondary tank unit 3, a housing member 11, a connector member 12, and a head cover 16. The housing member 11, the connector member 12, and the head cover 16 constitute the main body 1a (external part) of the liquid injection head 1, and the secondary tank unit 3 is stored within the housing member 11. More specifically, the housing member 11, the connector member 12, and the head cover 16 constitute a tank storage section for storing the secondary tank unit 3.

[0045] The sub-tank unit 3 of the liquid jet head 1 includes a plurality of sub-tank components 31, each corresponding to a different color of ink. Each sub-tank component 31 has a liquid storage section for storing ink. In this embodiment, the sub-tank unit 3 includes a circulation unit for circulating the liquid. The circulation unit of this embodiment includes a pump for circulating the liquid and a pressure control device for controlling the liquid pressure. The circulation unit allows ink to circulate within the liquid jet head 1 via a liquid supply path and a liquid recovery path.

[0046] In this embodiment, the liquid injection head 1 is provided with four auxiliary tank components 31. Hereinafter, the auxiliary tank components 31 will be referred to as auxiliary tank components 31a, 31b, 31c, and 31d as needed, and simply as auxiliary tank component 31 when no distinction is necessary. The auxiliary tank components 31a, 31b, 31c, and 31d are arranged side-by-side in this order along the first direction D1.

[0047] A liquid jetting module 13 for jetting (supplying) liquid stored in the auxiliary tank unit 3 is connected to the housing member 11. The liquid jetting module 13 is located at the lower part (the end on the third direction D3) of the housing member 11. The liquid jetting module 13 is a liquid jetting member provided with multiple jetting nozzles for ink jetting.

[0048] The liquid supply and return paths for circulating ink within the liquid ejector head 1 extend from the sub-tank member 31 through the housing member 11 to the liquid ejector module 13. More specifically, ink is supplied from the sub-tank member 31 through the housing member 11 to the liquid ejector module 13, and then returns from the liquid ejector module 13 to the sub-tank member 31 through the housing member 11.

[0049] The liquid jet head 1 includes a printed circuit board (hereinafter referred to as "PWB") 15 and a flexible printed circuit (hereinafter referred to as "FPC") 14. PWB 15 and FPC 14 are electrical connection components that electrically connect the liquid jet module 13 and the main body of the liquid jet device 50. PWB 15 is fixed to the housing component 11.

[0050] Connector 12 is a connecting member that connects the liquid injection head 1 to the liquid injection device 50, allowing liquid to be supplied from the body of the liquid injection device 50 to the liquid injection head 1. Connector 12 is secured to housing member 11 by fastening members (such as screws or similar fasteners). Connector 12 is connected to all auxiliary tank members 31.

[0051] The connector member 12 has a positioning pin 71 that protrudes outward toward the liquid injection head 1 in the second direction D2. When the liquid injection head 1 is connected to the main body of the device, the positioning pin 71 serves as a positioning part for positioning the liquid injection head 1 relative to the main body of the device.

[0052] The connector component 12 includes a liquid connection needle 72 for connecting the main body to the flow path, a liquid connection needle 75 for connecting a plurality of auxiliary tank components 31 to the flow path, and an air bubble removal needle 76 for removing unwanted air bubbles from the plurality of auxiliary tank components 31. The liquid connection needle 72 is a liquid connection portion protruding in the same direction as the positioning needle 71. The liquid connection needle 75 is a liquid connection portion protruding in the opposite direction to the positioning needle 71 and the liquid connection needle 72. The air bubble removal needle 76 is an air bubble removal portion protruding in the same direction as the liquid connection needle 75.

[0053] The connector component 12 is provided with four liquid connection needles 72, four liquid connection needles 75, and four air bubble removal needles 76 arranged side by side in the first direction D1. Sub-tank components 31a, 31b, 31c, and 31d are each connected to the shell component 11. Each of the sub-tank components 31a, 31b, 31c, and 31d is connected to the liquid connection needles 75 and air bubble removal needles 76 of the connector component 12.

[0054] The cover 16 is a protective member disposed on the upper part (the end on the third direction D3) of the shell member 11 to protect the auxiliary tank unit 3. The cover 16 is fixed to the shell member 11.

[0055] Figure 5 This is a cross-sectional view of the liquid injection head 1 taken along a section orthogonal to the first direction D1. As described above, the auxiliary tank component 31 is connected to both the housing component 11 and the connector component 12. In the following text, the connection between the housing component 11 and the auxiliary tank component 31 will be described as a first connection 81, and the connection between the auxiliary tank component 31 and the connector component 12 will be described as a second connection 82.

[0056] Figure 6 This is an enlarged cross-sectional view showing details of the first connection portion 81 of the liquid injection head 1. The auxiliary tank component 31 has a liquid supply port 35 and a liquid recovery port 36, which serve as the first connection portion to the housing component 11. Meanwhile, the housing component 11 has a liquid supply needle 73 and a liquid recovery needle 74, which serve as the first connected portion and are connected to the first connection portion of the auxiliary tank component 31.

[0057] Liquid supply port 35 is connected to liquid supply needle 73. Liquid supply needle 73 is a first protrusion in the third direction D3 protruding toward the sub-tank member 31, and liquid supply port 35 is a first recess in the third direction D3 away from the housing member 11. Both liquid supply port 35 and liquid supply needle 73 have internally formed flow paths and are configured to allow liquid to pass through them. These flow paths are configured to supply ink (liquid) from the sub-tank member 31 to the injection port formed in the liquid injection module 13. More specifically, ink in the sub-tank member 31 is supplied from liquid supply port 35 to liquid supply needle 73.

[0058] A sealing member 77 is inserted between the liquid supply port 35 and the liquid supply needle 73. The sealing member 77 is embedded within the liquid supply port 35 and externally mounted on the liquid supply needle 73. As described above, the liquid supply port 35 and the liquid supply needle 73 are loosely assembled together, with the sealing member 77 inserted between them. The sealing member 77 seals and connects the flow paths of the liquid supply port 35 and the liquid supply needle 73 to prevent ink leakage.

[0059] O-rings are preferably used as sealing members 77. By using O-rings, a seal can be achieved through the interlocking of their inner and outer circumferences, thereby allowing the auxiliary tank member 31 to be easily secured to the shell member 11.

[0060] Liquid recovery port 36 is connected to liquid recovery needle 74. Liquid recovery needle 74 is a first protrusion protruding toward sub-tank member 31 in the third direction D3, and liquid recovery port 36 is a first recess in the third direction D3 away from housing member 11. Both liquid recovery port 36 and liquid recovery needle 74 have internal flow paths and are configured to allow liquid to pass through them. These flow paths are used to recover ink (liquid) from liquid injection module 13 to sub-tank member 31. More specifically, ink in liquid injection module 13 is recovered to liquid recovery port 36 via liquid recovery needle 74.

[0061] A sealing member 77 is inserted between the liquid recovery port 36 and the liquid recovery needle 74. The sealing member 77 is embedded within the liquid recovery port 36 and externally fitted onto the liquid recovery needle 74. In this way, the liquid recovery port 36 and the liquid recovery needle 74 are loosely assembled with the sealing member 77 inserted between them. The sealing member 77 seals and connects the flow paths of the liquid recovery port 36 and the liquid recovery needle 74 to prevent ink leakage.

[0062] In this way, the first connection portion 81 connecting the shell component 11 and the auxiliary tank component 31 consists of a liquid supply port 35, a liquid supply needle 73 and a sealing component 77, as well as a liquid recovery port 36, a liquid recovery needle 74 and a sealing component 77.

[0063] Figure 7 This is an enlarged cross-sectional view showing details of the second connection portion 82 of the liquid injection head 1. The auxiliary tank member 31 has a liquid connection port 37 and an air bubble removal port 38, which serve as the second connection portion connected to the connector member 12. On the other hand, the connector member 12 has a liquid connection needle 75 and an air bubble removal needle 76, which serve as the second connected portion and are connected to the second connection portion of the auxiliary tank member 31.

[0064] Liquid connection port 37 is connected to liquid connection needle 75. Liquid connection needle 75 is a second protrusion projecting toward sub-tank member 31 in the second direction D2, and liquid connection port 37 is a second recessed portion in the second direction D2 away from connector member 12. Both liquid connection port 37 and liquid connection needle 75 have internal flow paths and are configured to allow liquid to pass through them. These flow paths supply ink (liquid) from liquid injection device 50 to sub-tank member 31. More specifically, ink stored in the liquid storage section of the main body of liquid injection device 50 is supplied from liquid connection needle 75 to liquid connection port 37. A flow path communicating with the flow path of liquid connection needle 75 is formed within liquid connection needle 72.

[0065] A sealing member 77 is inserted between the liquid connection port 37 and the liquid connection needle 75. The sealing member 77 is embedded within the liquid connection port 37 and externally fitted onto the liquid connection needle 75. In this way, the liquid connection port 37 and the liquid connection needle 75 are loosely assembled with the sealing member 77 inserted between them. The sealing member 77 seals and connects the flow paths of the liquid connection port 37 and the liquid connection needle 75 to prevent ink leakage.

[0066] Similarly, in the second connection 82, an O-ring is preferably used as a sealing member 77. By using an O-ring, a seal can be achieved through the interlocking of its inner and outer circumferences, thereby allowing the auxiliary tank member 31 to be easily secured to the connector member 12. In addition, using the same sealing member 77 for each of the first connection 81 and the second connection 82 can reduce costs.

[0067] A bubble removal port 38 is connected to a bubble removal needle 76. The bubble removal needle 76 is a second protrusion projecting toward the auxiliary tank member 31 in the second direction D2, and the bubble removal port 38 is a second recessed portion in the second direction D2 away from the connector member 12. Both the bubble removal port 38 and the bubble removal needle 76 have flow paths formed therein and are configured to allow liquid to pass through them. These flow paths recover bubbles from the liquid storage section of the auxiliary tank member 31. More specifically, unwanted bubbles in the auxiliary tank member 31 are recovered to the bubble removal port 38 via the bubble removal needle 76.

[0068] A sealing member 77 is inserted between the bubble removal port 38 and the bubble removal needle 76. The sealing member 77 is embedded within the bubble removal port 38 and externally fitted onto the bubble removal needle 76. In this way, the bubble removal port 38 and the bubble removal needle 76 are loosely assembled with the sealing member 77 inserted between them. The sealing member 77 seals and connects the flow paths of the bubble removal port 38 and the bubble removal needle 76 to prevent bubble leakage.

[0069] In this way, the second connection portion 82 connecting the connector component 12 and the auxiliary tank component 31 consists of a liquid connection port 37, a liquid connection needle 75 and a sealing component 77, as well as an air bubble removal port 38, an air bubble removal needle 76 and a sealing component 77.

[0070] In the auxiliary tank component 31, the liquid supply port 35 and the liquid recovery port 36 are provided on the lower surface (first surface) facing the third direction D3, and the liquid connection port 37 and the bubble removal port 38 are provided on the side surface (second surface) facing the second direction D2. More specifically, the surface on which the first connecting portion is provided and the surface on which the second connecting portion is provided are not parallel. The protruding directions of the first protrusion (liquid supply needle 73 and liquid recovery needle 74) serving as the first connected portion and the protruding directions of the second protrusion (liquid connection needle 75 and bubble removal needle 76) serving as the second connected portion intersect each other.

[0071] When the first connecting portion 81 and the second connecting portion 82 are connected, the connector member 12 is fixed to the housing member 11 by screws, so that the auxiliary tank member 31 is completely held by the body 1a of the liquid injection head 1. In this embodiment, the auxiliary tank member 31 does not have a connecting portion (fixing portion) other than the first connecting portion 81 and the second connecting portion 82. Therefore, the auxiliary tank member 31 is allowed to move relative to the body 1a by an amount corresponding to the elasticity of the sealing member 77, without being completely fixed. However, by using an O-ring as the sealing member 77, despite such mobility, sealing performance is maintained, thereby providing a highly reliable liquid injection head 1.

[0072] As described above, compared to the comparative embodiment, the construction of this embodiment allows the auxiliary can assembly 31 to the main body 1a with a simpler structure. Since the sealing member 77 prevents ink leakage, the reliability and quality of the liquid injection head 1 can be improved. Furthermore, since the components are fixed only by sealing connections, without any other means of fixation, balance can be achieved in all directions, resulting in greater tolerances for component dimensional accuracy and thus improving component assembly productivity.

[0073] Modification

[0074] Although the liquid injection head 1 is configured to allow internal liquid circulation in the above embodiments, it can also be configured not to allow liquid circulation. In such a configuration, the first connection portion 81 may only include a liquid supply port 35 and a liquid supply needle 73, without a liquid recovery port 36 and a liquid recovery needle 74. More specifically, in the above embodiments, a plurality of first connections and a plurality of first connected portions, as well as a plurality of second connections and a plurality of second connected portions, are provided. However, alternatively, only one of each may be provided. However, for the purpose of stably fixing the auxiliary tank member 31 to the main body 1a, it is more preferable to provide a plurality of connections and a plurality of connected portions.

[0075] Furthermore, in the above embodiments, the auxiliary can component 31 has a first recess and a second recess, and the main body 1a has a first protrusion and a second protrusion, but these relationships can be reversed. For example, the auxiliary can component 31 may be provided with protrusions such as various needles, while the main body 1a may be provided with a recess with an opening. More specifically, one of the auxiliary can component 31 and the main body 1a may be provided with a protrusion on which a sealing member 77 is externally embedded, while the other may be provided with a recess connected to the protrusion and in which the sealing member 77 is internally embedded.

[0076] While this disclosure has been described with reference to embodiments, it should be understood that this disclosure is not limited to the disclosed embodiments. The scope of the following claims is to be interpreted in the broadest sense to cover all such modifications and equivalent structures and functions.

Claims

1. A liquid injection head, comprising: A body having a first connected portion configured to allow liquid to pass through therethrough and a second connected portion configured to allow liquid to pass through therethrough; A can, stored within the body, includes a liquid storage section configured to store liquid therein, a first surface having a first connecting portion and a second surface having a second connecting portion, the first connecting portion being connected to the first connected portion and configured to allow liquid to pass through therein, the second connecting portion being connected to the second connected portion and configured to allow liquid to pass through therein, the second surface being non-parallel to the first surface; and Multiple sealing members are inserted between the first connecting portion and the first connected portion, and between the second connecting portion and the second connected portion. Wherein, one of the first connecting portion and the first connected portion is a first protrusion on which the sealing member is externally embedded, and the other is a first recess on which the sealing member is internally embedded; and one of the second connecting portion and the second connected portion is a second protrusion on which the sealing member is externally embedded, and the other is a second recess on which the sealing member is internally embedded.

2. The liquid injection head according to claim 1, in, The main body has a shell member having a first connected portion and a connector member having a second connected portion and being fixed to the shell member by a fixing member.

3. The liquid injection head according to claim 2, further comprising: Multiple of the aforementioned tanks, The connector component is connected to the plurality of tanks.

4. The liquid injection head according to claim 1, further comprising: The nozzle is configured to eject liquid. The first connecting portion and the first connected portion are formed with flow paths configured to supply liquid from the tank to the injection port.

5. The liquid injection head according to claim 1, further comprising: A liquid injection module having an injection port for injecting liquid, the liquid injection module being connected to the main body. The first connecting portion and the first connected portion are formed with flow paths configured to recover liquid from the liquid injection module to the tank.

6. The liquid injection head according to claim 5, in, The tank has a circulation unit configured to circulate liquid between the tank and the liquid injection module.

7. The liquid injection head according to claim 6, in, The circulation unit includes a pump and pressure control devices.

8. The liquid injection head according to claim 1, in, A flow path configured to supply liquid from a liquid injection device equipped with the liquid injection head to the tank is formed in the second connecting portion and the second connected portion.

9. The liquid injection head according to claim 1, in, Flow paths configured to collect bubbles from the tank are formed in the second connecting portion and the second connected portion.

10. The liquid injection head according to claim 1, in, The sealing component is an O-ring.

11. The liquid injection head according to claim 1, in, The second protrusion protrudes in a direction intersecting with the first protrusion.

12. The liquid injection head according to claim 1, in, The tank is provided with a plurality of first connecting parts and a plurality of second connecting parts, and the main body is provided with a plurality of first connected parts and a plurality of second connected parts.

13. A liquid jetting device, comprising: A conveying unit configured to convey a recording medium in a conveying direction; and The liquid injection head according to any one of claims 1 to 12, The liquid injection head is configured to scan in a direction intersecting the delivery direction.

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