Printing apparatus and liquid storage member

Patent metadata

Field	Value
Publication number	US-RE49336-E
Application number	US-201916728460-A
Country	US
Kind code	E1
Filing date	Dec 27, 2019
Priority date	Oct 30, 2015
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

The printing apparatus of the present invention includes: a print head; and a liquid storage container in which a liquid storage chamber that stores a liquid to be supplied to the print head, an atmosphere communication chamber that communicates with the atmosphere, and a communication flow path that causes the liquid storage chamber and the atmosphere communication chamber to communicate are formed integrally. The liquid storage container can take a first posture in which the atmosphere communication chamber is located under the liquid storage chamber in the direction of gravity and a second posture in which the atmosphere communication chamber and the liquid storage chamber are located side by side in the horizontal direction. In the case where the liquid storage container is in the second posture, the liquid injection portion and the communication flow path are located on the upper side of the liquid storage container.

First claim

What is claimed is:

1. A printing apparatus comprising:
a print head having an ejection port surface on which an ejection port which ejects a liquid is formed; and
a liquid storage container including:
a liquid storage chamber configured to store the liquid to be supplied to the print head;
a liquid injection portion configured for injection of the liquid into the liquid storage chamber from the outside;
an atmosphere communication chamber configured to communicate with the atmosphere, the atmosphere communication chamber being arranged under the liquid storage chamber in a direction of gravity in a state where the print head ejects liquid; and
a communication flow path configured to allow communication between the liquid storage chamber and the atmosphere communication chamber, the communication flow path having an opening in the atmosphere communication chamber, the opening being arranged under the ejection port surface in the direction of gravity,

wherein the atmosphere communication chamber being arranged under the liquid storage chamber in a direction of gravity in a state where the liquid is supplied to the liquid storage chamber.

2. The printing apparatus according to claim 1 , further comprising:
a liquid supply path that connects the liquid storage chamber and the print head;
a second valve provided on the liquid supply path and configured to switch a second open state in which the liquid is supplied to the print head from the liquid storage chamber and a second closed state in which the liquid is not supplied to the print head from the liquid storage chamber.

3. The printing apparatus according to claim 2 ,
wherein the second valve is in the second closed state when the liquid is injected into the liquid storage chamber from the liquid injection portion.

4. The printing apparatus according to claim 1 ,
wherein the liquid storage container further includes an atmosphere communication flow path that is connected to the atmosphere communication chamber and an atmosphere opening that opens into the atmosphere, and
the printing apparatus further comprising a first valve provided on the atmosphere communication flow path and configured to switch a first open state in which the atmosphere communication chamber communicates with the atmosphere through the atmosphere opening and a first closed state in which the atmosphere communication chamber does not communicate with the atmosphere.

5. The printing apparatus according to claim 4 ,
wherein the first valve is in the first closed state when the liquid is injected into the liquid storage chamber from the liquid injection portion.

6. The printing apparatus according to claim 4 ,
wherein the atmosphere opening is arranged in the vicinity of a top of the liquid storage container.

7. The printing apparatus according to claim 1 ,
wherein one end of the communication flow path is connected to a bottom surface side of the liquid storage chamber and the other end is connected to a bottom surface side of the atmosphere communication chamber.

8. The printing apparatus according to claim 1 ,
wherein the liquid storage container is installed in the printing apparatus.

9. The printing apparatus according to claim 1 ,
wherein the liquid storage chamber and the atmosphere communication chamber are formed by being defined by a partition wall arranged within the liquid storage container.

10. The printing apparatus according to claim 1 ,
wherein the opening in the atmosphere communication chamber of the communication flow path is formed on a bottom surface side of the atmosphere communication chamber, and
a bottom surface of the atmosphere communication chamber is arranged so as to be under an ejection port surface on which an ejection port through which the liquid is ejected is formed in the print head.

11. The printing apparatus according to claim 1 ,
wherein the storage container has a liquid supply portion from which the liquid in the liquid storage chamber is supplied to the print head, and
the liquid supply portion is located on a lower side of the liquid storage container.

12. The printing apparatus according to claim 11 ,
wherein a bottom surface of the atmosphere communication chamber is arranged so as to be under the lowest position of a flow path that connects the liquid supply portion and the print head.

13. The printing apparatus according to claim 1 ,
wherein a top surface of the atmosphere communication chamber is arranged under the ejection port surface in the direction of gravity.

14. The printing apparatus according to claim 1 ,
wherein the liquid injection portion is arranged above the ejection port surface in the direction of gravity.

15. A liquid storage container comprising:
a liquid storage chamber configured to store a liquid to be supplied to a print head of the printing apparatus;
a liquid injection portion configured for injection of the liquid into the liquid storage chamber from the outside;
an atmosphere communication chamber configured to communicate with the atmosphere, the atmosphere communication chamber being arranged under the liquid storage chamber in a direction of gravity in a state where the print head ejects liquid; and
a communication flow path configured to allow communication between the liquid storage chamber and the atmosphere communication chamber, the communication flow path having an opening in the atmosphere communication chamber, the opening being arranged under an ejection port surface of the print head in the direction of gravity,
wherein the atmosphere communication chamber is arranged under the liquid storage chamber in a direction of gravity in a state where the liquid is supplied to the liquid storage chamber.

16. A printing apparatus comprising:
a print head having an ejection port surface on which an ejection port which ejects a liquid is formed;
a liquid storage container including:
a liquid storage chamber configured to store the liquid to be supplied to the print head;
a liquid injection portion configured for injection of the liquid into the liquid storage chamber from the outside;
an atmosphere communication chamber configured to communicate with the atmosphere, the atmosphere communication chamber being arranged under the liquid storage chamber in a direction of gravity;
a communication flow path having an opening in the atmosphere communication chamber and configured to allow communication between the liquid storage chamber and the atmosphere communication chamber, the opening being arranged under the ejection port surface in the direction of gravity; and
an atmosphere communication flow path that is connected to the atmosphere communication chamber and an atmosphere opening that opens into the atmosphere; and

wherein the printing apparatus further comprises a first valve provided on the atmosphere communication flow path and configured to switch a first open state in which the atmosphere communication chamber communicates with the atmosphere through the atmosphere opening and a first closed state in which the atmosphere communication chamber does not communicate with the atmosphere.

17. The printing apparatus according to claim 16 ,
wherein the first valve is in the first closed state when the liquid is injected into the liquid storage chamber from the liquid injection portion.

18. The printing apparatus according to claim 16 , further comprising:
a liquid supply path that connects the liquid storage chamber and the print head;
a second valve provided on the liquid supply path and configured

Assignees

• Canon Kk

Inventors

• Kimura Yukimichi
• Kiuchi Takahiro
• Kubokawa Junichi
• Sato Kyohei
• Shimada Koki
• Shimmachi Masaya
• Tanaka Yusuke
• Matsumura Hideaki
• Tsukuda Keiichiro
• Nanjo Tatsuo

Classifications

• B41J2/17513 Primary

  Inner structure · CPC title

• B41J2/17596

  Ink pumps, ink valves · CPC title

• B41J29/02

  Framework · CPC title

• B41J2/17523

  Ink connection · CPC title

• B41J29/377

  Cooling or ventilating arrangements · CPC title