IP Library › Granted Patent US 11,167,556
Granted Patent B2
US 11,167,556 · App. 16/370,695 · Granted Nov 9, 2021

Ink tank and ink jet printing apparatus

Inventors: Koki Shimada (Kawasaki, JP); Hideaki Matsumura (Kawasaki, JP); Masaya Shimmachi (Kawasaki, JP); Yukimichi Kimura (Kawasaki, JP); Junichi Kubokawa (Kawasaki, JP); Takahiro Kiuchi (Fuchu, JP); Yusuke Tanaka (Kawasaki, JP); Kyohei Sato (Kawasaki, JP)
Assignee: Canon Kabushiki Kaisha
B41J2/17503B41J2/175B41J2/1754B41J2/17513B41J2/17523B41J2/17553B41J2/17559
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Quick Facts
Patent No.
US 11,167,556
App. No.
16/370,695
Granted
Nov 9, 2021
Kind
B2
Abstract

An ink tank that enables to check whether a cover of an ink tank is normally bonded to the ink tank includes a first chamber having a supply port for supplying ink to a printing head that ejects ink, a second chamber having an external air introduction port capable of introducing external air, a partition wall configured to separate the first chamber and the second chamber, a communication path provided in the partition wall and configured to place the first chamber and the second chamber in communication with each other, a first cover member configured to cover an opening of the first chamber without extending over an opening of the second chamber, and a second cover member configured to cover the opening of the second chamber without extending over the opening of the first chamber.

Claims (51)

1. An ink tank comprising:

a tank container including

a first chamber configured to store ink therein, the first chamber having a first opening on a first side surface of the tank container,

a supply port configured to supply ink from the first chamber to a print head that ejects the ink,

an injection port configured to inject ink into the first chamber, the injection port being detachably capped by a tank cap,

a second chamber configured to store air therein, the second chamber having a second opening on a second side surface of the tank container and being separated from the first chamber by a partition wall,

an air introduction port capable of introducing external air to the second chamber, and

a communication path configured to communicate the first chamber and the second chamber;

a first cover configured to cover the first opening and not to cover the second opening and configured as a sidewall of the ink tank; and

a second cover configured to cover the second opening and not to cover the first opening and configured as a sidewall of the ink tank.

2. The ink tank according to claim 1 , wherein the second side surface is different from the first side surface.

3. The ink tank according to claim 2 , wherein the second side surface is opposite to the first side surface.

4. The ink tank according to claim 1 , wherein the second chamber is formed above the first chamber.

5. The ink tank according to claim 1 , wherein the air introduction port is formed on an upper surface of the second chamber.

6. The ink tank according to claim 1 , wherein the supply port is connected to a supply tube for supplying ink to the printing head.

7. The ink tank according to claim 1 , wherein the ink tank is provided on a front surface of an ink jet printing apparatus that ejects ink and prints an image.

8. An ink jet printing apparatus comprising:

a printing head configured to eject ink;

an ink tank including

a tank container including

a first chamber configured to store ink therein, the first chamber having a first opening on a first side surface of the tank container,

a supply port configured to supply ink from the first chamber to a print head that ejects the ink,

an injection port configured to inject ink into the first chamber, the injection port being detachably capped by a tank cap,

a second chamber configured to store air therein, the second chamber having a second opening on a second side surface of the tank container and being separated from the first chamber by a partition wall,

an air introduction port capable of introducing external air to the second chamber, and

a communication path configured to communicate the first chamber and the second chamber;

a first cover configured to cover the first opening and not to cover the second opening and configured as a sidewall of the ink tank, and

a second cover configured to cover the second opening and not to cover the first opening and configured as a sidewall of the ink tank.

9. The ink jet printing apparatus according to claim 8 , wherein the second side surface is opposite to the first side surface.

10. The ink jet printing apparatus according to claim 8 , wherein the second chamber is formed above the first chamber.

11. The ink jet printing apparatus according to claim 8 , wherein the air introduction port is formed on an upper surface of the second chamber.

12. The ink jet printing apparatus according to claim 8 , wherein the supply port is connected to a supply tube for supplying ink to the printing head.

13. The ink jet printing apparatus according to claim 8 , wherein the ink tank is provided on a front surface of the ink jet printing apparatus that ejects ink and prints an image.

14. An ink tank comprising:

a first chamber configured to contain ink, the first chamber having a supply port for supplying ink to a printing head that ejects ink and a first opening on a first side surface of the ink tank;

an injection port configured to inject ink into an interior of the first chamber, the injection port being detachably capped by a tank cap;

a second chamber configured to contain air, the second chamber having an external air introduction port capable of introducing external air and a second opening on a second side surface of the ink tank;

a partition wall configured to separate the first chamber and the second chamber;

a communication path configured to communicate the first chamber with the second chamber;

a first cover member configured to cover the first opening and not cover the second opening and configured as a sidewall of the first chamber; and

a second cover member configured to cover the second opening and not cover the first opening and configured as a sidewall of the second chamber.

15. An ink jet printing apparatus comprising:

a printing head configured to eject ink; and

an ink tank including

a first chamber configured to contain ink, the first chamber having a supply port for supplying ink to the printing head and a first opening on a first side surface of the ink tank,

an injection port configured to inject ink into an interior of the first chamber, the injection port being detachably capped by a tank cap,

a second chamber configured to contain air, the second chamber having an external air introduction port capable of introducing external air and a second opening on a second side surface of the ink tank,

a partition wall configured to separate the first chamber and the second chamber,

a communication path configured to communicate the first chamber with the second chamber,

a first cover member configured to cover the first opening and not cover the second opening and configured as a sidewall of the first chamber, and

a second cover member configured to cover the second opening and not cover the first opening and configured as a sidewall of the second chamber.

Priority Claims (1)
JP 2015-214969 · Oct 30, 2015 · national
Continuity (2)
Continuation 15336572 · Oct 27, 2016
Related Publication 20190283437A1 · Sep 19, 2019
Cited By (5)
US 12,195,338 US 12,214,420 US 12,261,023 US 12,311,447 US 12,406,829