CN117283992A - Tank unit and printing device - Google Patents

Tank unit and printing device Download PDF

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Publication number
CN117283992A
CN117283992A CN202310728673.8A CN202310728673A CN117283992A CN 117283992 A CN117283992 A CN 117283992A CN 202310728673 A CN202310728673 A CN 202310728673A CN 117283992 A CN117283992 A CN 117283992A
Authority
CN
China
Prior art keywords
cover
rotation axis
holding portion
ink
replenishment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310728673.8A
Other languages
Chinese (zh)
Inventor
工藤圣真
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of CN117283992A publication Critical patent/CN117283992A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17553—Outer structure

Landscapes

  • Ink Jet (AREA)

Abstract

The invention provides a can unit and a printing device with high degree of freedom of the position of a second cover relative to a first cover. The tank unit (20) is provided with an ink tank (21) for containing ink, a holding portion (31) for holding the ink tank, a first cover (41) mounted on the holding portion, and a second cover (51) mounted on the holding portion, wherein a replenishment port (25) for replenishing ink is opened in the ink tank, the first cover is configured to rotate about a first rotation axis (A1) with respect to the holding portion, and by rotating about the first rotation axis, the first cover is configured to be displaced between a position for blocking the replenishment port and a position for exposing the replenishment port, the second cover is configured to rotate about a second rotation axis (A2) with respect to the holding portion, and by rotating about the second rotation axis, the first cover and the second cover are configured to be displaced between a position for covering the first cover located at the position for blocking the replenishment port and a position for exposing the first cover, and the first rotation axis and the second rotation axis extend in mutually different directions.

Description

Tank unit and printing device
Technical Field
The present invention relates to a tank unit and a printing apparatus.
Background
Patent document 1 describes a printing device including a printhead that ejects ink and a tank unit. The tank unit includes an ink tank that accommodates ink supplied to the printhead. The ink tank is provided with a replenishment port for replenishing ink. The tank unit is provided with a first cover for blocking the replenishment port and a second cover for covering the first cover. The first cover and the second cover rotate around the respective rotation axes.
[ Prior Art literature ]
[ patent literature ]
[ patent document 1] Japanese patent laid-open No. 2017-222152
In the tank unit described in patent document 1, the rotation axis of the first cover is parallel to the rotation axis of the second cover. In this case, in order to cover the first cover with the second cover, it is easy to make the distance between the rotation axis of the second cover and the replenishment port longer than the distance between the rotation axis of the first cover and the replenishment port. That is, the position of the second cover is easily restricted.
Disclosure of Invention
A tank unit for solving the above problems is provided with: an ink tank that contains ink; a holding portion that holds the ink tank; a first cover mounted on the holding portion; and a second cover attached to the holding portion, the ink tank having a replenishment port through which ink is replenished, the first cover being configured to rotate about a first rotation axis with respect to the holding portion and to be displaced between a position where the replenishment port is blocked and a position where the replenishment port is exposed by rotating about the first rotation axis, the second cover being configured to rotate about a second rotation axis with respect to the holding portion and to be displaced between a position where the first cover is covered in a position where the replenishment port is blocked and a position where the first cover is exposed by rotating about the second rotation axis, the first rotation axis and the second rotation axis extending in directions different from each other.
A printing apparatus for solving the above problems is provided with: a printhead that ejects ink; an ink tank that accommodates ink ejected from the print head; a holding portion that holds the ink tank; a first cover mounted on the holding portion; and a second cover attached to the holding portion, the ink tank having a replenishment port through which ink is replenished, the first cover being rotatable about a first rotation axis to displace between a position where the replenishment port is blocked and a position where the replenishment port is exposed, the second cover being rotatable about a second rotation axis to displace between a position where the first cover is covered at the position where the replenishment port is blocked and a position where the first cover is exposed, the first rotation axis and the second rotation axis extending in directions different from each other.
Drawings
Fig. 1 is a perspective view showing an embodiment of a printing apparatus.
Fig. 2 is a perspective view showing an embodiment of the tank unit.
Fig. 3 is a top view of the canister unit shown in fig. 2.
Fig. 4 is a perspective view of the can unit in which rotation of the second cover is restricted by the first cover.
Fig. 5 is a perspective view of the can unit pushing the first cap through the second cap.
Fig. 6 is a cross-sectional view of the canister unit shown in fig. 4.
Fig. 7 is a cross-sectional view of the canister unit shown in fig. 5.
[ description of the reference numerals ]
11: a printing device; 12: a case; 13: a discharge cap; 14: visual confirmation of the mouth; 15: a print head; 20: a tank unit; 21: an ink tank; 22: a housing part; 23: a visual confirmation unit; 24: a replenishment pipe; 25: a refill port; 31: a holding section; 32: an upper surface; 33: a first side; 34: a second side; 35: an insertion hole; 36: a mounting groove; 37: a support portion; 41: a first cover; 42: a cover; 43: a base; 44: a mounting portion; 45: a holding portion; 46: a mounting surface; 47: a pressing surface; 48: a limiting surface; 49: a support surface; 51: a second cover; 52: a main body portion; 53: an inner surface; 54: a holding portion; 55: a contact portion; 99: a medium; a1: a first axis of rotation; a2: a second axis of rotation.
Detailed Description
An embodiment of a printing apparatus including a tank unit will be described below with reference to the drawings. The printing apparatus is, for example, an inkjet printer that prints images such as characters and photographs by ejecting ink onto a medium such as paper or fabric. The printing apparatus may further include a reading mechanism that reads an image printed on the document.
< Structure of printing device >
As shown in fig. 1, the printing apparatus 11 includes a casing 12. The casing 12 has a discharge cover 13. The discharge cap 13 is configured to be openable and closable. In fig. 1, the discharge cap 13 is closed. By opening the discharge cap 13, the discharge port is exposed. The printed medium 99 is discharged through the discharge port.
The case 12 is provided with a visual confirmation opening 14. The visual inspection opening 14 is an opening exposing a part of the ink tank 21 described later. The visual confirmation opening 14 is opened, for example, at the front surface of the case 12. The visual inspection opening 14 exposes, for example, the front surface of the ink tank 21. The user can grasp the remaining ink amount of the ink tank 21 through the visual confirmation port 14.
The printing apparatus 11 includes a print head 15. The printhead 15 is housed in the casing 12. The printhead 15 has more than one nozzle. The printhead 15 ejects ink from nozzles. The printhead 15 ejects ink toward the media 99. Thereby, an image is printed on the medium 99.
The printing apparatus 11 includes a tank unit 20. The tank unit 20 is a unit including an ink tank 21. The tank unit 20 is mounted to the case 12, for example.
< Structure of tank Unit >
The tank unit 20 includes an ink tank 21. The ink tank 21 is accommodated in the case 12. The ink tank 21 contains ink. Ink tank 21 is connected to printhead 15. The ink contained in the ink tank 21 is supplied to the print head 15.
As shown in fig. 2, the ink tank 21 includes a housing portion 22. The accommodating portion 22 is configured to accommodate ink. The housing 22 is made of, for example, a transparent or translucent material. The accommodating portion 22 accommodates ink therein. The ink contained in the containing portion 20 is supplied to the print head 15.
The housing portion 22 has a visual confirmation portion 23. The visual confirmation unit 23 is a surface on which graduations are displayed, for example. The visual confirmation portion 23 is, for example, a front surface of the housing portion 22. The visual inspection portion 23 is exposed through the visual inspection port 14. The user visually confirms the visual confirmation portion 23 through the visual confirmation port 14, thereby visually confirming the liquid level of the ink in the ink tank 21. Thereby, the user grasps the ink remaining amount of the ink tank 21.
Ink tank 21 may also have a refill tube 24. The replenishment pipe 24 extends upward from the accommodation portion 22. Ink is replenished to the accommodating portion 22 through the replenishment pipe 24. For example, an ink bottle containing ink is inserted into the replenishment pipe 24, whereby the ink is replenished to the containing portion 22 through the replenishment pipe 24.
A replenishment port 25 is opened in the ink tank 21. Ink is replenished to the accommodating portion 22 through the replenishment port 25. The replenishment port 25 is opened at the front end of the replenishment pipe 24, for example. The replenishment port 25 may be opened in the accommodation portion 22.
The tank unit 20 includes a holding portion 31, a first cover 41, and a second cover 51.
The holding portion 31 is accommodated in the case 12. The holding portion 31 is configured to hold the ink tank 21. The holding portion 31 is attached to, for example, an upper portion of the ink tank 21. The holding portion 31 is configured to cover the ink tank 21 from above. The holding portion 31 is configured to expose the replenishment pipe 24.
As shown in fig. 2, 3, 4 and 5, the holding portion 31 has an upper surface 32. The upper surface 32 faces upward in the holding portion 31. The holding portion 31 has a first side 33. The holding portion 31 has a second side 34. The first side surface 33 and the second side surface 34 are surfaces facing each other in the holding portion 31. The first side 33 and the second side 34 are for example connected to the upper surface 32.
The holding portion 31 is provided with an insertion hole 35. The insertion hole 35 is opened, for example, on the upper surface 32. The replenishment pipe 24 is exposed through the insertion hole 35. The insertion hole 35 is an opening into which the ink bottle is inserted. The replenishment pipe 24 is inserted into the ink bottle by inserting the ink bottle into the insertion hole 35. The holding portion 31 supports the ink bottle by inserting the ink bottle into the insertion hole 35. Thus, the posture of the ink bottle is stabilized when the ink is replenished.
The holding portion 31 is provided with an attachment groove 36. The mounting slot 36 is open, for example, on the upper surface 32. The mounting groove 36 is located on the upper surface 32 adjacent to the insertion hole 35. The mounting groove 36 is a groove to which the first cover 41 is mounted. The first cover 41 is attached to the holding portion 31 by inserting the base end of the first cover 41 into the attachment groove 36.
The holding portion 31 has a supporting portion 37. The support portion 37 is a portion that supports the first cover 41. The supporting portion 37 receives stress acting on the first cover 41 by being in contact with the first cover 41. The support portion 37 reinforces the first cover 41 by receiving stress acting on the first cover 41. The support portion 37 protrudes upward from the upper surface 32, for example. The support portion 37 is, for example, a protrusion. The support portion 37 is located adjacent to the mounting groove 36, for example, on the upper surface 32.
The first cover 41 is mounted on the holding portion 31. The first cover 41 is rotatably attached to the holding portion 31. The first cover 41 is configured to rotate about the first rotation axis A1 with respect to the holding portion 31. The first rotation axis A1 is a virtual axis extending so as to bridge the mounting groove 36. The first rotation axis A1 extends so as to penetrate the base end of the first cover 41. The first rotation axis A1 extends, for example, in a direction perpendicular to the visual confirmation portion 23.
The first cover 41 blocks the replenishment port 25. Specifically, the first cover 41 is displaced between a position where the replenishment port 25 is blocked and a position where the replenishment port 25 is exposed by rotating about the first rotation axis A1. Accordingly, the first cover 41 opens and closes the replenishment port 25. By blocking the replenishment port 25 by the first cover 41, the possibility of foreign matter entering the accommodation portion 22 through the replenishment port 25 is reduced. In the case of replenishing ink to the ink tank 21, the first cover 41 is opened. The first cover 41 shown in fig. 2, 3 and 4 is positioned to expose the replenishment port 25. The first cover 41 shown in fig. 5 is positioned to block the refill opening 25. In detail, the first cover 41 shown in fig. 5 is located at a position contacting the front end of the replenishment pipe 24.
The first cover 41 has a cover 42. The cover 42 covers the refill tube 24. In detail, when the first cover 41 is positioned to block the refill port 25, that is, when the first cover 41 is closed, the cover 42 covers the tip of the refill tube 24. At this time, the cover 42 may be inserted into the insertion hole 35, for example. In the case where the first cover 41 is located at a position where the replenishment port 25 is exposed, that is, in the case where the first cover 41 is opened, the cover 42 is away from the replenishment pipe 24.
If the first cover 41 is closed, the front end of the replenishment pipe 24 is fitted into the cover 42. Thereby, the cap 42 covers the front end of the refill tube 24. In the first cover 41 shown in fig. 5, the replenishment pipe 24 is not fully inserted into the cover 42. The replenishment port 25 is blocked by the first cover 41 by the cover 42 coming into contact with the front end of the replenishment pipe 24. By embedding the replenishment pipe 24 into the cover 42, the replenishment port 25 is better blocked by the first cover 41.
The cover 42 is made of a material having elasticity such as rubber or elastomer. Thereby, the cover 42 can be brought into close contact with the replenishment pipe 24. Covering the refill tube 24 with the cover 42 reduces the likelihood of foreign matter entering the container portion 22 through the refill opening 25 or promoting evaporation of ink contained in the container portion 22.
The first cover 41 has a base 43. The base 43 is a member to which the cover 42 is attached. The base end of the base 43 is mounted on the holding portion 31. By rotating the base 43 about the first rotation axis A1, the cover 42 covers the refill tube 24, or the cover 42 is away from the refill tube 24. The base 43 may be inserted into the insertion hole 35 when the first cover 41 blocks the replenishment port 25.
The base 43 includes a mounting portion 44. The mounting portion 44 is located at the base end of the base 43. The mounting portion 44 is inserted into the mounting slot 36. By mounting the mounting portion 44 on the holding portion 31, the first cover 41 is held on the holding portion 31. Thus, the first rotation axis A1 extends so as to penetrate the mounting portion 44.
The base 43 has a holding portion 45. The holding portion 45 is located at the front end of the base 43. The user opens and closes the first cover 41 by gripping the grip portion 45.
The base 43 has a mounting surface 46, a pressing surface 47, a restricting surface 48, and a supporting surface 49. The mounting surface 46, the pressing surface 47, the restricting surface 48, and the supporting surface 49 are, for example, outer peripheral surfaces of intermediate portions of the base 43 between the mounting portion 44 and the holding portion 45.
The mounting surface 46 is a surface to which the cover 42 is mounted. The mounting surface 46 is, for example, a surface facing downward when the first cover 41 blocks the replenishment port 25. The mounting surface 46 faces the ink tank 21 when the first cover 41 closes the replenishment port 25.
The pressing surface 47 is a surface opposite to the mounting surface 46. The pressing surface 47 is a surface facing upward when the first cover 41 closes the replenishment port 25. The pressing surface 47 is a surface that can be brought into contact with the second cover 51 when the first cover 41 closes the replenishment port 25. By bringing the second cover 51 into contact with the pressing surface 47, the first cover 41 is pressed against the replenishment pipe 24. Thereby, the cover 42 is in close contact with the replenishment pipe 24.
The restricting surface 48 is a surface connected to the mounting surface 46 and the pressing surface 47. The restricting surface 48 is, for example, a surface facing forward in the printing apparatus 11. That is, the restricting surface 48 is, for example, a surface facing in the same direction as the visual confirmation portion 23. The restricting surface 48 is a surface that can be brought into contact with the second cover 51 when the first cover 41 exposes the replenishment port 25. The restricting surface 48 is a surface that restricts displacement of the second cover 51 by contact with the second cover 51.
The support surface 49 is the surface opposite to the restriction surface 48. The support surface 49 is, for example, a surface facing rearward in the printing apparatus 11. The support surface 49 faces the support portion 37 with the first cover 41 exposing the replenishment port 25. The support surface 49 contacts the support portion 37 with the first cover 41 exposing the replenishment port 25. The support surface 49 is in contact with the support portion 37, for example, with the second cover 51 in contact with the restricting surface 48. The first cover 41 is supported to the support portion 37 by the support portion 37 being in contact with the support surface 49.
The second cover 51 is mounted on the holding portion 31. The second cover 51 is rotatably attached to the holding portion 31. The second cover 51 is configured to rotate about the second rotation axis A2 with respect to the holding portion 31. The second rotation axis A2 is, for example, an imaginary axis extending so as to pass through the first side surface 33 and the second side surface 34. The second rotation axis A2 extends so as to penetrate the base end of the second cover 51.
The second rotation axis A2 extends in a different direction from the first rotation axis A1. The second rotation axis A2 extends, for example, in a direction orthogonal to the first rotation axis A1. The second rotation axis A2 extends, for example, in a direction parallel to the visual confirmation portion 23.
The second cover 51 covers the first cover 41. In detail, the second cover 51 covers the first cover 41 at a position where the replenishment port 25 is blocked. More specifically, the second cover 51 is displaced between a position covering the first cover 41 located at a position where the replenishment port 25 is blocked and a position where the first cover 41 is exposed by rotating about the second rotation axis A2. Accordingly, the second cover 51 is opened and closed with respect to the first cover 41 blocking the replenishment port 25. By covering the first cover 41 blocking the replenishment port 25 with the second cover 51, the possibility of accidental opening of the first cover 41 is reduced. The second cover 51 protects the first cover 41 by covering the first cover 41. In the case of replenishing ink to the ink tank 21, the second cover 51 is opened. The second cover 51 shown in fig. 2, 3 and 4 is positioned to expose the first cover 41. The second cover 51 shown in fig. 5 is located at a position immediately before covering the first cover 41. This is because the refill tube 24 is not fully inserted into the cap 42.
The second cover 51 has a main body portion 52. The main body portion 52 is a portion covering the first cover 41. The user opens and closes the second cover 51 by holding the main body portion 52. The body portion 52 has an inner surface 53. The inner surface 53 is a face surrounding the first cover 41 with the main body portion 52 covering the first cover 41.
The second cover 51 has a holding portion 54. The holding portion 54 is a portion mounted on the holding portion 31. The holding portion 54 is located at the base end of the second cover 51. The retaining portion 54 extends from the body portion 52. The holding portion 54 extends, for example, in such a manner as to sandwich the holding portion 31. In detail, the holding portion 54 extends in such a manner as to sandwich the first side surface 33 and the second side surface 34. Thus, the second rotation axis A2 extends so as to penetrate the holding portion 54.
The second cover 51 has a contact portion 55. The contact portion 55 is a portion that contacts the first cover 41. The contact portion 55 is, for example, a protruding piece protruding from the inner surface 53. When the second cover 51 is positioned at a position where the first cover 41 blocking the replenishment port 25 is blocked, the contact portion 55 protrudes downward. The contact portion 55 is located in the area of the second cover 51 surrounded by the inner surface 53.
The contact portion 55 contacts the first cover 41 by being displaced from a position where the second cover 51 exposes the first cover 41. Specifically, the contact portion 55 contacts the pressing surface 47 or the restricting surface 48. The object contacted by the contact portion 55 varies according to the position of the first cover 41.
As shown in fig. 4 and 6, when the first cover 41 is positioned at a position where the replenishment port 25 is exposed, that is, when the first cover 41 is opened, the contact portion 55 contacts the restriction surface 48. If the contact portion 55 contacts the restricting surface 48, the rotation of the second cover 51 is stopped. The restricting surface 48 is a surface perpendicular to the first rotation axis A1. In addition, the second rotation axis A2 extends in a direction different from the first rotation axis A1. Therefore, even if the restricting surface 48 is pressed by the second cover 51, the first cover 41 is not displaced. The first cover 41 is brought into contact with the restricting surface 48 through the contact portion 55 to restrict the rotation of the second cover 51. That is, the first cover 41 functions as a stopper for the second cover 51. Thereby, forgetting to block the refill opening 25 by the first cover 41 is suppressed.
The first cover 41 is loaded from the second cover 51 by the contact portion 55 coming into contact with the restricting surface 48. At this time, the supporting portion 37 receives the load received by the first cover 41 from the second cover 51 by the supporting portion 37 coming into contact with the supporting surface 49. By the supporting portion 37 bearing the load, the possibility of breakage of the first cover 41 is reduced.
As shown in fig. 5 and 7, in the case where the replenishment pipe 24 is not fully fitted into the cover 42, that is, in the case where the first cover 41 is located at a position immediately before being fully closed, the contact portion 55 is in contact with the pressing surface 47. When the contact portion 55 contacts the pressing surface 47, the second cover 51 presses the first cover 41 toward the ink tank 21. Thereby, the replenishment pipe 24 is completely inserted into the cover 42, i.e., the first cover 41 is completely closed. In this way, by the contact portion 55 coming into contact with the pressing surface 47, the possibility of the first cover 41 being closed in an incomplete state is reduced.
In the case where the replenishment pipe 24 is fitted into the cover 42, that is, in the case where the first cover 41 is completely closed, the contact portion 55 is in contact with the pressing surface 47. Thus, the first cover 41 located at a position where the replenishment port 25 is blocked is less likely to float with respect to the replenishment pipe 24. Thus, the possibility of the first cover 41 being accidentally opened is reduced.
< action and Effect >
Next, the operation and effects of the above embodiment will be described.
(1) The first rotation axis A1 and the second rotation axis A2 extend in mutually different directions. According to the above configuration, the first rotation axis A1 is not parallel to the second rotation axis A2. Thereby, the degree of freedom is improved in terms of the position of the second cover 51 relative to the first cover 41. For example, in the case where the first rotation axis A1 and the second rotation axis A2 extend in mutually orthogonal directions, the degree of freedom is improved in terms of the position of the second cover 51 relative to the first cover 41, as compared with the case where the first rotation axis A1 and the second rotation axis A2 extend parallel to each other.
When the first rotation axis A1 and the second rotation axis A2 extend parallel to each other, the distance between the second rotation axis A2 and the replenishment port 25 is easily longer than the distance between the first rotation axis A1 and the replenishment port 25 so that the second cover 51 covers the first cover 41. In particular, in the structure in which the tip of the replenishment pipe 24 is fitted into the cap 42 by rotating the first cap 41, if the distance between the first rotation axis A1 and the replenishment pipe 24 is short, the cap 42 becomes difficult to be attached to and detached from the replenishment pipe 24. Therefore, the distance between the first rotation axis A1 and the replenishment pipe 24 needs to be lengthened to such an extent that the attachment and detachment of the cover 42 to and from the replenishment pipe 24 becomes easy. Therefore, in the case where the first rotation axis A1 and the second rotation axis A2 extend in parallel, the distance between the second rotation axis A2 and the replenishment pipe 24 is liable to become long. Even in this regard, according to the above-described configuration, the distance between the second rotation axis A2 and the replenishment pipe 24 can be shortened by increasing the degree of freedom in the position of the second cover 51 with respect to the first cover 41.
(2) The first rotation axis A1 and the second rotation axis A2 extend in mutually orthogonal directions.
According to the above configuration, the degree of freedom is further improved in terms of the position of the second cover 51 relative to the first cover 41.
(3) In the case where the second cover 51 is located at a position covering the first cover 41 located at a position blocking the replenishment port 25, the contact portion 55 presses the first cover 41 against the replenishment pipe 24.
According to the above-described structure, the first cover 41 is pressed against the replenishment pipe 24 by the contact portion 55, and the second cover 51 presses against the first cover 41. Thus, the first cover 41 located at a position where the replenishment port 25 is blocked is less likely to float with respect to the replenishment pipe 24. In addition, in the case where the replenishment pipe 24 is not fully fitted into the cover 42, the first cover 41 is pushed against the replenishment pipe 24 by the contact portion 55, and the replenishment pipe 24 is fully fitted into the cover 42. Thereby, the first cover 41 better blocks the replenishment port 25.
(4) The first cover 41 is brought into contact with the restricting surface 48 through the contact portion 55 to restrict the rotation of the second cover 51.
According to the above configuration, the first cover 41 functions as a stopper for the second cover 51 when positioned at a position where the replenishment port 25 is exposed. Thereby, forgetting to block the refill opening 25 by the first cover 41 is suppressed.
(5) With the contact portion 55 in contact with the restricting surface 48, the supporting portion 37 is in contact with the supporting surface 49.
In the case where the rotation of the second cover 51 is restricted by the first cover 41, a load is applied from the second cover 51 to the first cover 41. Depending on the magnitude of the load applied to the first cover 41 from the second cover 51, there is a possibility that the first cover 41 may be broken. In this regard, according to the above-described structure, the supporting portion 37 can withstand the load applied from the second cover 51 to the first cover 41 by the supporting portion 37 coming into contact with the supporting surface 49. Thereby, the possibility of breakage of the first cover 41 is reduced.
< modification example >
The above-described embodiments can be modified as follows. The above-described embodiments and the following modifications can be combined with each other within a range that is not technically contradictory.
The first cover 41 may also have a plug which is inserted into the replenishment pipe 24 instead of the cover 42.
The direction of extension of the first axis of rotation A1 and the direction of extension of the second axis of rotation A2 may also be interchanged. That is, the first rotation axis A1 may extend in a direction parallel to the visual confirmation portion 23. The second rotation axis A2 may extend in a direction perpendicular to the visual confirmation portion 23.
< technical idea >
The technical ideas and the effects thereof, which are grasped from the above-described embodiments and modified examples, are described below.
(A) The tank unit is provided with: an ink tank that contains ink; a holding portion that holds the ink tank; a first cover mounted on the holding portion; and a second cover attached to the holding portion, the ink tank having a replenishment port through which ink is replenished, the first cover being configured to rotate about a first rotation axis with respect to the holding portion and to be displaced between a position where the replenishment port is blocked and a position where the replenishment port is exposed by rotating about the first rotation axis, the second cover being configured to rotate about a second rotation axis with respect to the holding portion and to be displaced between a position where the first cover is covered in a position where the replenishment port is blocked and a position where the first cover is exposed by rotating about the second rotation axis, the first rotation axis and the second rotation axis extending in directions different from each other.
According to the above structure, the first rotation axis is not parallel to the second rotation axis. Thereby, the degree of freedom is increased in terms of the position of the second cover relative to the first cover. For example, in the case where the first rotation axis and the second rotation axis extend in mutually orthogonal directions, the degree of freedom is improved in terms of the position of the second cover relative to the first cover, as compared with the case where the first rotation axis and the second rotation axis extend in parallel with each other.
(B) In the tank unit, the first rotation axis and the second rotation axis may extend in directions orthogonal to each other.
According to the above configuration, the degree of freedom is further improved in terms of the position of the second cover with respect to the first cover.
(C) In the above tank unit, the replenishment port of the ink tank may have a replenishment pipe open at a front end, the first cover may have a cover that covers the replenishment pipe, the second cover may have a contact portion that contacts the first cover, the cover may cover the replenishment pipe when the first cover is located at a position where the replenishment port is blocked, and the contact portion may press the first cover against the replenishment pipe when the second cover is located at a position where the first cover is located at a position where the replenishment port is blocked.
According to the above structure, the first cap is pushed against the replenishment pipe by the contact portion, and the second cap is pushed against the first cap. Thus, the first cap located at a position where the replenishment port is blocked is difficult to float with respect to the replenishment pipe.
(D) In the tank unit, the first cover may have a base to which the cover is attached, and the base may have: a mounting surface to which the cover is mounted; a pressing surface opposite to the mounting surface; and a regulating surface connected to the mounting surface and the pressing surface, the pressing surface being a surface that contacts the contact portion when the contact portion presses the first cover against the replenishment pipe, the regulating surface being a surface that contacts the contact portion when the first cover is positioned at a position where the replenishment port is exposed, the first cover being regulated to rotate by the contact portion contacting the regulating surface.
According to the above configuration, the first cover functions as a stopper for the second cover when the first cover is positioned at a position where the replenishment port is exposed. Thereby, forgetting to block the refill opening by the first cap is suppressed.
(E) In the tank unit, the first cover may have a support surface opposite to the restricting surface, and the holding portion may have a support portion that contacts the support surface, and the support portion may contact the support surface when the contact portion contacts the restricting surface.
In the case where the rotation of the second cover is restricted by the first cover, a load is applied from the second cover to the first cover. Depending on the magnitude of the load applied to the first cover from the second cover, there is a possibility that the first cover is broken. In this regard, according to the above-described structure, the supporting portion can withstand the load applied from the second cover to the first cover by the supporting portion coming into contact with the supporting surface. Thereby, the possibility of breakage of the first cover is reduced.
(F) The printing device is provided with: a printhead that ejects ink; an ink tank that accommodates ink ejected from the print head; a holding portion that holds the ink tank; a first cover mounted on the holding portion; and a second cover attached to the holding portion, the ink tank having a replenishment port through which ink is replenished, the first cover being rotatable about a first rotation axis to displace between a position where the replenishment port is blocked and a position where the replenishment port is exposed, the second cover being rotatable about a second rotation axis to displace between a position where the first cover is covered at the position where the replenishment port is blocked and a position where the first cover is exposed, the first rotation axis and the second rotation axis extending in directions different from each other. According to the above configuration, the same effects as those of the tank unit can be obtained.

Claims (6)

1. A tank unit comprising:
an ink tank that contains ink;
a holding portion that holds the ink tank;
a first cover mounted on the holding portion; and
a second cover mounted on the holding portion,
on the ink tank, a replenishing port for replenishing ink is arranged at the opening,
the first cover is configured to rotate about a first rotation axis with respect to the holding portion and to be displaced between a position to close the replenishment port and a position to expose the replenishment port by rotating about the first rotation axis,
the second cover is configured to rotate about a second rotation axis with respect to the holding portion, and to be displaced between a position covering the first cover at a position closing the replenishment port and a position exposing the first cover by rotating about the second rotation axis,
the first rotation axis and the second rotation axis extend in mutually different directions.
2. A tank unit as claimed in claim 1, characterized in that,
the first rotation axis and the second rotation axis extend in mutually orthogonal directions.
3. A tank unit as claimed in claim 2, characterized in that,
the refill port of the ink tank has a refill tube that is open at a front end,
the first cap has a cap covering the replenishment pipe,
the second cover has a contact portion contacting the first cover,
the cap covers the refill tube with the first cap in a position to block the refill port,
the contact portion urges the first cap against the replenishment pipe with the second cap in a position covering the first cap in a position blocking the replenishment port.
4. A tank unit as claimed in claim 3, characterized in that,
the first cover has a base for mounting the cover,
the base has:
a mounting surface to which the cover is mounted;
a pressing surface opposite to the mounting surface; and
a limiting surface connected to the mounting surface and the pressing surface,
the pressing surface is a surface that contacts the contact portion in a state where the contact portion presses the first cover against the replenishment pipe,
the restricting surface is a surface that contacts the contact portion in a state where the first cover is located at a position where the replenishment port is exposed,
the first cover restricts rotation of the second cover by the contact portion coming into contact with the restricting surface.
5. The tank unit of claim 4, wherein,
the first cover has a support surface opposite the limiting surface,
the holding portion has a supporting portion that contacts the supporting surface,
the support portion is in contact with the support surface with the contact portion in contact with the restricting surface.
6. A printing apparatus is characterized by comprising:
a printhead that ejects ink;
an ink tank that accommodates ink ejected from the print head;
a holding portion that holds the ink tank;
a first cover mounted on the holding portion; and
a second cover mounted on the holding portion,
on the ink tank, a replenishing port for replenishing ink is arranged at the opening,
the first cover is displaced between a position where the replenishment port is blocked and a position where the replenishment port is exposed by rotating around a first rotation axis,
the second cover is displaced between a position covering the first cover at a position where the replenishment port is blocked and a position where the first cover is exposed by rotating around a second rotation axis,
the first rotation axis and the second rotation axis extend in mutually different directions.
CN202310728673.8A 2022-06-24 2023-06-20 Tank unit and printing device Pending CN117283992A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-101660 2022-06-24
JP2022101660A JP2024002469A (en) 2022-06-24 2022-06-24 Tank unit and printer

Publications (1)

Publication Number Publication Date
CN117283992A true CN117283992A (en) 2023-12-26

Family

ID=89257785

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310728673.8A Pending CN117283992A (en) 2022-06-24 2023-06-20 Tank unit and printing device

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Country Link
JP (1) JP2024002469A (en)
CN (1) CN117283992A (en)

Also Published As

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JP2024002469A (en) 2024-01-11

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