CN-117048207-B - Liquid storage container

Abstract

The present disclosure relates to liquid storage containers. The liquid storage container includes a liquid absorber that absorbs and retains liquid, a storage portion that stores the liquid absorber, a cover member having ribs, an air communication port provided in the cover member, and a liquid retaining path. The storage portion has an opening facing the first surface of the liquid absorber and is covered with a cover member. The rib contacts the first surface when the cover member covers the opening. The air communication port communicates the internal space of the storage portion with air. The liquid holding path is provided on the rib adjacent to the air communication port and extends from the contact surface of the adjacent rib toward the cover member. The liquid holding path holds liquid that has oozed from the first surface of the liquid absorber.

Inventors

• KUSANO HIROAKI
• Jing Lirunyilang
• Haramoto Yusuke
• TOMOHISA ATSUTA
• Kojo shigetomo

Assignees

• 佳能株式会社

Dates

Publication Date

20260512

Application Date

20230412

Priority Date

20220512

Claims (19)

1. 1. A liquid storage container comprising: A liquid absorber configured to absorb and retain a liquid; a storage portion that stores the liquid absorber and has an opening portion facing a first surface of the liquid absorber; a cover member configured to cover an opening portion of the storage portion; a plurality of ribs provided on an inner surface of the cover member positioned closer to the storage portion, wherein the plurality of ribs are in contact with the first surface of the liquid absorber in a state where the opening portion is covered by the cover member; An air communication port provided in the cover member so that an inner space of the storage portion communicates with air, and At least one first liquid holding path provided on at least one rib adjacent to the air communication port among the plurality of ribs and extending from a contact surface of the at least one rib that contacts the first surface toward the cover member, Wherein the at least one first liquid retention path is configured to retain liquid that has oozed from the first surface of the liquid absorbent, an Wherein the at least one first liquid retention path has a stronger capillary force at a portion closer to the cover member.
2. 2. The liquid storage container of claim 1, wherein the at least one first liquid retention path is configured such that a channel width of the at least one first liquid retention path is greater than a channel depth of the at least one first liquid retention path.
3. 3. The liquid storage container of claim 1, wherein the at least one first liquid retention path has a narrower width at a portion closer to the cover member.
4. 4. The liquid storage container of claim 1, wherein the second end of the at least one first liquid retention path terminates between an inner surface of the cap member and a contact surface of the at least one rib.
5. 5. The liquid storage container according to any one of claims 1 to 4, wherein the at least one first liquid holding path is a groove-like channel provided on a side surface of the at least one rib, and a first end of the groove-like channel opens to a contact surface of the at least one rib.
6. 6. The liquid storage container according to claim 5, Wherein the at least one rib has a first side surface closer to a side of the air communication port, and a second side surface opposite to the first side surface, and Wherein the channel-like channel is provided on at least the first side surface.
7. 7. The liquid storage container according to claim 5, Wherein the channel-like channel comprises: A first channel-like channel having a first end opening to the contact surface of the at least one rib and extending toward the cover member, A second channel-like channel coupled to the second end of the first channel-like channel and extending in a direction intersecting the first channel-like channel, and A third channel having a first end coupled to the second channel and extending toward the cover member, an Wherein the first, second, and third channel channels are each configured to hold a liquid.
8. 8. The liquid storage container according to claim 7, wherein a relationship of F1< F2< F3 is satisfied assuming that the first grooved channel, the second grooved channel, and the third grooved channel have capillary forces F1, F2, and F3, respectively.
9. 9. The liquid storage container according to any one of claims 1 to 4, wherein the at least one first liquid holding path is a slit-shaped passage penetrating the at least one rib in a thickness direction of the at least one rib, and a first end of the slit-shaped passage opens to a contact surface of the at least one rib.
10. 10. The liquid storage container of any of claims 1-4, wherein the at least one first liquid retention path is provided in plurality parallel to one another.
11. 11. The liquid storage container according to any one of claims 1 to 4, further comprising at least one second liquid holding path provided on the at least one rib, communicating with the at least one first liquid holding path, and extending in a direction intersecting the at least one first liquid holding path, Wherein the at least one second liquid retention path is configured to retain liquid flowing from the at least one first liquid retention path.
12. 12. The liquid storage container of claim 11, wherein an end of the at least one first liquid retention path that is closer to the cover member is coupled to the at least one second liquid retention path.
13. 13. The liquid storage container of claim 12, the at least one second liquid retention path being stronger in capillary force than the at least one first liquid retention path.
14. 14. The liquid storage container of claim 13, wherein the at least one second liquid retention path is narrower in width than the at least one first liquid retention path.
15. 15. The liquid storage container of claim 11, wherein the at least one second liquid retention path is a channel-like channel provided on a side surface of the at least one rib.
16. 16. The liquid storage container according to any one of claims 1 to 4, further comprising at least one second liquid holding path provided on the at least one rib, communicating with the at least one first liquid holding path, and extending in a direction intersecting the at least one first liquid holding path, Wherein the at least one first liquid retention path is a first channel-like channel provided on a side surface of the at least one rib, Wherein the at least one second liquid holding path is a second groove-like channel provided on a side surface of the at least one rib, and Wherein the first channel has a first end opening to a contact surface of the at least one rib and a second end coupled to the second channel.
17. 17. The liquid storage container according to any one of claims 1 to 4, further comprising at least one second liquid holding path provided on the at least one rib, communicating with the at least one first liquid holding path, and extending in a direction intersecting the at least one first liquid holding path, Wherein the at least one first liquid holding path is a slit-like passage penetrating the at least one rib in a thickness direction of the at least one rib, Wherein the at least one second liquid holding path is a groove-like channel provided on a side surface of the at least one rib, and Wherein the slit-shaped channel has a first end opening to a contact surface of the at least one rib, and a second end coupled to the channel-shaped channel.
18. 18. The liquid storage container according to any one of claims 1 to 4, further comprising at least one second liquid holding path provided on the at least one rib, communicating with the at least one first liquid holding path, and extending in a direction intersecting the at least one first liquid holding path, Wherein the at least one first liquid holding path is a groove-like channel provided on a side surface of the at least one rib, Wherein the at least one second liquid holding path is a slit-like passage penetrating the at least one rib in a thickness direction of the at least one rib, and Wherein the channel-like channel has a first end opening to a contact surface of the at least one rib, and a second end coupled to the slit-like channel.
19. 19. A liquid storage container comprising: A liquid absorber configured to absorb and retain a liquid; a storage portion that stores the liquid absorber and has an opening portion facing a first surface of the liquid absorber; a cover member configured to cover an opening portion of the storage portion; a plurality of ribs provided on an inner surface of the cover member positioned closer to the storage portion, wherein the plurality of ribs are in contact with the first surface of the liquid absorber in a state where the opening portion is covered by the cover member, and An air communication port provided in the cover member so that an inner space of the storage portion communicates with air, Wherein at least one rib adjacent to the air communication port among the plurality of ribs has a capillary structure configured to absorb liquid that has oozed out from the first surface of the liquid absorber, and Wherein the capillary structure has a stronger capillary force at a portion closer to the cover member.

Description

Liquid storage container Technical Field The present disclosure relates to a liquid storage container capable of storing liquid such as ink. Background There is a conventional ink tank detachably attached to an inkjet printing apparatus. The ink tank includes a tank case accommodating an ink absorber capable of holding ink, and a cover member covering an opening portion of the tank case. A protruding portion having a truncated cone shape and a plurality of ribs (rib) are provided on an inner surface of the cover member. The protruding portion is provided with an air communication port that communicates with air. The rib is in contact with the ink absorber in a state where the opening portion of the tank case is covered with the cover member. The first groove and the second groove are also formed on the inner surface of the cover member. The first groove is remote from the protruding portion and surrounds the protruding portion. The second groove is located in a region surrounded by the first groove, branches from the first groove, and is away from the protruding portion. Japanese patent application laid-open No.2009-248426 discusses an ink tank detachably attached to an inkjet printing apparatus. The above ink tanks including the tank case are often handled individually during the dispensing process. When transported, the ink tank changes its posture, and ink oozes out from the ink absorber and reaches the inner surface of the cover member via ribs or the like. The first and second grooves located near the protruding portion hold the ink that has reached the inner surface of the cover member, thereby preventing the ink from entering the air communication port. An increase in the amount of ink injected into the ink tank has been seen in recent years. Some ink tanks may prevent ink from entering the air communication port. However, as the amount of recently injected ink increases, further countermeasures have been required. Disclosure of Invention The present disclosure is directed to a liquid storage container capable of preventing leakage of liquid from an air communication port to the outside even when the injection amount of liquid such as ink increases. According to an aspect of the present disclosure, a liquid storage container includes a liquid absorber configured to absorb and hold a liquid, a storage portion that stores the liquid absorber and has an opening portion facing a first surface of the liquid absorber, a cover member configured to cover the opening portion of the storage portion, a plurality of ribs provided on an inner surface of the cover member positioned closer to the storage portion, wherein the plurality of ribs are in contact with the first surface of the liquid absorber in a state where the opening portion is covered by the cover member, an air communication port provided in the cover member such that an inner space of the storage portion is in communication with air, and at least one first liquid holding path provided on at least one rib adjacent to the air communication port among the plurality and extending from the surface of the at least one rib in contact with the first surface toward the cover member. Wherein the at least one first liquid retention path is configured to retain liquid that has oozed from the first surface of the liquid absorbent. Further features of the present disclosure will become apparent from the following description of exemplary embodiments with reference to the attached drawings. Drawings Fig. 1 is a perspective view illustrating an external appearance of a liquid storage container according to a first exemplary embodiment of the present disclosure. Fig. 2A and 2B are exploded perspective views respectively illustrating a print head portion and a tank portion of the liquid storage container shown in fig. 1. Fig. 3 is a sectional view partially illustrating a cross section of the liquid storage container taken along line A-A in fig. 1. Fig. 4A to 4D are schematic views illustrating examples of ribs of the cover member. Fig. 5A to 5D are schematic diagrams illustrating a state of liquid near the air communication port in a case where the liquid storage container according to the comparative example is rotated once. Fig. 6A to 6D are schematic views illustrating a state of liquid near the air communication port in the case where the liquid storage container shown in fig. 1 is rotated once. Fig. 7A to 7C are schematic views illustrating examples of ribs of a cover member used in a liquid storage container according to a second exemplary embodiment of the present disclosure. Fig. 8A and 8B are schematic views illustrating an example of ribs of a cover member used in a liquid storage container according to a third exemplary embodiment of the present disclosure. Fig. 9 is a schematic view illustrating a modification of the rib of the cover member shown in fig. 4A to 4D. Detailed Description Exemplary embodiments of the present disclosure will be described in