IP Library › Granted Patent US 12,372,918
Granted Patent B2
US 12,372,918 · App. 18/648,713 · Granted Jul 29, 2025

Cartridge, member constituting cartridge, and image forming apparatus

Inventors: Masaaki Sato (Yokohama, JP); Yukio Kubo (Boise, ID); Hiroyuki Munetsugu (Yokohama, JP); Koji Wada (Yokohama, JP)
Assignee: Canon Kabushiki Kaisha
G03G21/1842G03G21/1619G03G21/1817G03G21/1821G03G21/1885G03G21/1647G03G21/1825G03G21/1857
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Quick Facts
Patent No.
US 12,372,918
App. No.
18/648,713
Granted
Jul 29, 2025
Kind
B2
Abstract

A cartridge includes a developing roller and a frame configured to support the developing roller. A lever is connected to the frame, with the lever being movable relative to the frame, and with a part of the lever protruding beyond the frame. The cartridge also includes a memory board. and an electrode portion connected to the memory board. When the cartridge is oriented with the lever and the electrode portion at a bottom portion of the cartridge, the protruding part of the lever protrudes downward from the frame and at least a part of an exposed part of the developing roller is positioned above the rotational axis.

Claims (64)

1. A cartridge comprising:

a developing roller rotatable about a rotational axis thereof;

a frame configured to support the developing roller;

a lever connected to the frame, the lever being movable relative to the frame, and a part of the lever protruding beyond the frame;

a spring deformable in response to a movement of the lever relative to the frame, the spring being positioned such that it is capable of exerting a first force on the lever and a second force on the frame;

a memory board; and

an electrode portion connected to the memory board,

wherein the memory board is supported by an end portion of the frame in a direction of the rotational axis of the developing roller,

wherein a part of the developing roller is exposed to outside of the frame, and

wherein, when the cartridge is oriented with the lever and the electrode portion at a bottom portion of the cartridge, the protruding part of the lever protrudes downward from the frame and at least a part of the exposed part of the developing roller is positioned above the rotational axis.

2. The cartridge according to claim 1 , wherein the spring is compressed as the lever moves closer to the developing roller.

3. The cartridge according to claim 1 , wherein the frame includes a restricting part that contacts the lever pressed by the spring.

4. The cartridge according to claim 1 , wherein the lever is rotatably supported by the frame and rotatable relative to the frame,

wherein the frame has a developer accommodation part that accommodates developer, and

wherein, as viewed in the rotational axis direction of the developing roller, a position of a rotational axis of the lever overlaps the developer accommodation part.

5. The cartridge according to claim 1 , wherein a surface of the electrode portion is exposed to outside of the cartridge and intersects a direction in which the lever moves relative to the frame.

6. The cartridge according to claim 1 , wherein the spring contacts the frame and the lever.

7. The cartridge according to claim 1 , wherein the protruding part of the lever has a portion that is curved toward a side of the developing roller.

8. The cartridge according to claim 1 , wherein the spring is compressed in response to the movement of the lever in a first direction, and the spring expands in response to a movement of the lever in a second direction.

9. The cartridge according to claim 1 , wherein a part of the lever and a part of the electrode portion are positioned in a plane that is perpendicular to the rotational axis of the developing roller.

10. A cartridge comprising:

a developing roller rotatable about a rotational axis thereof;

a frame configured to support the developing roller;

a lever connected to the frame, the lever being movable relative to the frame, and a part of the lever protruding beyond the frame;

a spring deformable in response to a movement of the lever relative to the frame, the spring being positioned such that it is capable of exerting a first force on the lever and a second force on the frame;

a coupling member configured to transmit a rotational force to the developing roller, the coupling member being rotatable about a rotational axis thereof;

a memory board; and

an electrode portion connected to the memory board,

wherein the coupling member is positioned at a first end portion of the frame in a direction of the rotational axis of the developing roller, and the memory board is supported by a second end portion of the frame that is opposite to the first end portion in the direction of the rotational axis of the developing roller,

wherein, when the cartridge is oriented with the lever and the electrode portion at a bottom portion of the cartridge, the protruding part of the lever protrudes downward beyond the frame, and

wherein, as viewed in a rotational axis direction of the developing roller, the coupling member is positioned between the spring and the developing roller.

11. The cartridge according to claim 10 , wherein the spring is compressed as the lever moves closer to the developing roller.

12. The cartridge according to claim 10 , wherein the frame includes a restricting part that contacts the lever pressed by the spring.

13. The cartridge according to claim 10 , wherein the lever is rotatably supported by the frame and rotatable relative to the frame,

wherein the frame has a developer accommodation part that accommodates developer, and

wherein, as viewed in the rotational axis direction of the developing roller, a position of a rotational axis of the lever overlaps the developer accommodation part.

14. The cartridge according to claim 10 , wherein a surface of the electrode portion is exposed to outside of the cartridge and intersects a direction in which the lever moves relative to the frame.

15. The cartridge according to claim 10 , wherein the spring contacts the frame and the lever.

16. The cartridge according to claim 10 , wherein the protruding part of the lever has a portion that is curved toward a side of the developing roller.

17. The cartridge according to claim 10 , wherein the spring is compressed in response to the movement of the lever in a first direction, and the spring expands in response to a movement of the lever in a second direction.

18. The cartridge according to claim 10 , wherein the lever is positioned at the second end portion of the frame, and

wherein a part of the lever and a part of the electrode portion are positioned in a plane that is perpendicular to the rotational axis of the developing roller.

19. A cartridge comprising:

a developing roller rotatable about a rotational axis thereof;

a frame configured to support the developing roller;

a lever connected to the frame, the lever being movable relative to the frame, and a part of the lever protruding beyond the frame;

a spring deformable in response to a movement of the lever relative to the frame, the spring being positioned such that it is capable of exerting a first force on the lever and a second force on the frame;

a coupling member configured to transmit a rotational force to the developing roller, the coupling member being rotatable about a rotational axis thereof;

a memory board; and

an electrode portion connected to the memory board,

wherein the coupling member is positioned at a first end portion of the frame in a direction of the rotational axis of the developing roller, and the memory board is supported by a second end portion of the frame that is opposite to the first end portion in the direction of the rotational axis of the developing roller,

wherein, when the cartridge is oriented with the lever and the electrode portion at a bottom portion of the cartridge, the protruding part of the lever protrudes downward beyond the frame, and

wherein, as viewed in a rotational axis direction of the developing roller, the coupling member is positioned between the lever and the developing roller.

20. The cartridge according to claim 19 , wherein the spring is compressed as the lever moves closer to the developing roller.

21. The cartridge according to claim 19 , wherein the frame includes a restricting part that contacts the lever pressed by the spring.

22. The cartridge according to claim 19 , wherein the lever is rotatably supported by the frame and rotatable relative to the frame,

wherein the frame has a developer accommodation part that accommodates developer, and

wherein, as viewed in the rotational axis direction of the developing roller, a position of a rotational axis of the lever overlaps the developer accommodation part.

23. The cartridge according to claim 19 , wherein a surface of the electrode portion is exposed to outside of the cartridge and intersects a direction in which the lever moves relative to the frame.

24. The cartridge according to claim 19 , wherein the spring contacts the frame and the lever.

25. The cartridge according to claim 19 , wherein the protruding part of the lever has a portion that is curved toward a side of the developing roller.

26. The cartridge according to claim 19 , wherein the spring is compressed in response to the movement of the lever in a first direction, and the spring expands in response to a movement of the lever in a second direction.

27. The cartridge according to claim 19 , wherein the lever is positioned at the second end portion of the frame, and

wherein a part of the lever and a part of the electrode portion are positioned in a plane that is perpendicular to the rotational axis of the developing roller.

Priority Claims (5)
JP 2014-242577 · Nov 28, 2014 · national
JP 2014-242578 · Nov 28, 2014 · national
JP 2014-242601 · Nov 28, 2014 · national
JP 2014-242602 · Nov 28, 2014 · national
JP 2015-231356 · Nov 27, 2015 · national
Continuity (6)
Division 18201828 · May 25, 2023
Division 17692317 · Mar 11, 2022
Division 16734760 · Jan 6, 2020
Division 15606070 · May 26, 2017
Continuation PCTJP2015083463 · Nov 27, 2015
Related Publication 20240302788A1 · Sep 12, 2024
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Jun. 30, 2021 Office Action in Vietnamese Patent Application No. 1-2017-02381 (with English translation). [cited by applicant]
Feb. 23, 2022 Office Action in Australian Patent Application No. 2020289742. [cited by applicant]
May 23, 2022 Office Action in Taiwanese Patent Application No. 110118515. [cited by applicant]
Jul. 28, 2022 Notice of Allowance in Korean Patent Application No. 10-2022-7002378. [cited by applicant]
Jul. 26, 2022 Office Action in Brazilian Patent Application No. 11207011150-0 (with English translation). [cited by applicant]
Sep. 27, 2022 Office Action in Brazilian Patent Application No. 122018074174-0 (with English translation). [cited by applicant]
Sep. 27, 2022 Office Action in Brazilian Patent Application No. 122018074176-7 (with English translation). [cited by applicant]
Sep. 27, 2022 Office Action in Brazilian Patent Application No. 122018074177-5 (with English translation). [cited by applicant]
Sep. 27, 2022 Office Action in Brazilian Patent Application No. 122018074172-4 (with English translation). [cited by applicant]
Sep. 27, 2022 Office Action in Brazilian Patent Application No. 122018074173-2 (with English translation). [cited by applicant]
Oct. 21, 2022 Search and Examination Report in United Arab Emirates Patent Application No. P6000623/2017. [cited by applicant]
Feb. 10, 2023 Office Action in Australian Patent Application No. 2020289742. [cited by applicant]
Apr. 3, 2023 Notice of Allowance in Korean Patent Application No. 10-2022-7037444. [cited by applicant]
May 2, 2023 Office Action in Brazilian Patent Application No. 122018074176-7 (with English translation). [cited by applicant]
Jan. 20, 2025 Notice of Allowance in Korean Patent Application No. 10-2023-7036356. [cited by applicant]