Liquid storage container

Patent metadata

Field	Value
Publication number	US-11701890-B2
Application number	US-202117370942-A
Country	US
Kind code	B2
Filing date	Jul 8, 2021
Priority date	Jul 16, 2020
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

A liquid storage container includes: a discharge port member including a discharge port through which liquid stored in a storage portion is discharged; a cover portion configured to be attachable to the discharge port member and to be capable of opening and closing the discharge port; and a sealing portion formed of a contact portion between the cover portion and the discharge port member. The cover portion includes a groove structure between an outer periphery of the cover portion and the sealing portion.

First claim

What is claimed is:

1. A liquid storage container comprising:
a discharge port member including a discharge port through which liquid stored in a storage portion is discharged;
a cover portion configured to be attachable to the discharge port member and to be capable of opening and closing the discharge port; and
a sealing portion formed of a contact portion between the cover portion and the discharge port member, wherein
the cover portion includes a groove structure positioned on a top surface of the cover portion between an outer periphery of the cover portion and the sealing portion.

2. The liquid storage container according to claim 1 , wherein the groove structure is arranged on a top face of an outer portion of the cover portion.

3. The liquid storage container according to claim 1 , wherein the groove structure is arranged on a top face of an inner portion of the cover portion.

4. The liquid storage container according to claim 1 , wherein the groove structure is arranged both in a top face of an inner portion and a top face of an outer portion of the cover portion.

5. The liquid storage container according to claim 1 , wherein the groove structure is formed continuously all around the center of the cover portion.

6. The liquid storage container according to claim 1 , wherein the groove structure is formed discontinuously around the center of the cover portion.

7. The liquid storage container according to claim 1 , wherein the groove structure has a circular shape.

8. The liquid storage container according to claim 1 , wherein the groove structure has a polygonal shape.

9. The liquid storage container according to claim 1 , wherein
the cover portion and the discharge port member include thread structures, respectively, and
the cover portion is attached to the discharge port member by the thread structures.

10. The liquid storage container according to claim 9 , wherein the groove structure provides flexure to the cover portion when the cover portion is threaded onto the discharge portion and seated to the contact portion.

11. The liquid storage container according to claim 1 , wherein the cover portion includes a cylindrical structure, configured to be in contact with the discharge port member, directly below the groove structure.

12. The liquid storage container according to claim 1 , wherein
a liquid stop valve is provided inside the discharge port member,
a protrusion configured to open the liquid stop valve in closing the cover portion is provided inside the cover portion, and
the protrusion opens the liquid stop valve in a state where the cover portion is attached to the discharge port member.

13. The liquid storage container according to claim 12 , wherein
the liquid stop valve includes an orifice portion, a valve element, and a biasing mechanism configured to bias the valve element, and
the biasing mechanism closes a gap between the orifice portion and the valve element.

14. The liquid storage container according to claim 1 , wherein
the liquid storage container stores liquid with which a liquid tank of a liquid ejecting apparatus is replenished, the liquid ejecting apparatus configured to eject the liquid, and
the discharge port member includes a recess portion configured to engage with a protruding portion provided in the liquid tank.

15. The liquid storage container according to claim 1 , wherein
seen through from a liquid discharging direction, the cover portion includes the groove structure between an outer periphery of the cover portion and the sealing portion.

16. The liquid storage container according to claim 1 , wherein
the discharge port member is joined to the storage portion by welding.

17. The liquid storage container according to claim 1 , wherein
the discharge port member is coupled to the storage portion by sealing a space between the discharge port member and the storage portion by inserting a flexible part.

18. The liquid storage container according to claim 1 , wherein the liquid stored in a storage portion is ink.

19. The liquid storage container according to claim 1 , wherein the sealing portion defines a contact portion between the cover portion and the discharge port member where the cover portion and the discharge port member are in direct contact.

Assignees

• Canon Kk

Inventors

• Nagai Noriyasu
• Inoue Ryoji
• Nagaoka Kyosuke
• Tanno Takayuki
• Udagawa Kenta

Classifications

• B41J2/17509 Primary

  Whilst mounted in the printer · CPC title

• B41J2/1754

  with means attached to the cartridge, e.g. protective cap · CPC title

• B41J2/17513

  Inner structure · CPC title

• B41J2/17523

  Ink connection · CPC title

• B65D47/123

  with internal parts · CPC title