US 12,140,903 B2
Cartridge, member constituting cartridge, and image forming apparatus
Masaaki Sato, Yokohama (JP); Yukio Kubo, Boise, ID (US); Hiroyuki Munetsugu, Yokohama (JP); and Koji Wada, Yokohama (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on May 25, 2023, as Appl. No. 18/201,828.
Application 18/201,828 is a division of application No. 17/692,317, filed on Mar. 11, 2022, granted, now 11,698,601.
Application 17/692,317 is a division of application No. 16/734,760, filed on Jan. 6, 2020, granted, now 11,307,529, issued on Apr. 19, 2022.
Application 16/734,760 is a division of application No. 15/606,070, filed on May 26, 2017, granted, now 11,131,960, issued on Sep. 28, 2021.
Application 15/606,070 is a continuation of application No. PCT/JP2015/083463, filed on Nov. 27, 2015.
Claims priority of application No. 2014-242577 (JP), filed on Nov. 28, 2014; application No. 2014-242578 (JP), filed on Nov. 28, 2014; application No. 2014-242601 (JP), filed on Nov. 28, 2014; application No. 2014-242602 (JP), filed on Nov. 28, 2014; and application No. 2015-231356 (JP), filed on Nov. 27, 2015.
Prior Publication US 2023/0297024 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G03G 21/18 (2006.01); G03G 21/16 (2006.01)
CPC G03G 21/1842 (2013.01) [G03G 21/1619 (2013.01); G03G 21/1817 (2013.01); G03G 21/1821 (2013.01); G03G 21/1885 (2013.01); G03G 21/1647 (2013.01); G03G 21/1825 (2013.01); G03G 21/1857 (2013.01)] 72 Claims
OG exemplary drawing
 
1. A cartridge comprising:
a developing roller having a rotational axis about which the developing roller is rotatable;
a frame configured to support the developing roller;
a first lever connected to the frame, the first lever being movable relative to the frame;
a second lever connected to the frame, the second lever being movable relative to the frame and relative to the first lever;
a first spring deformable in response to a movement of the first lever relative to the frame, the first spring being capable of generating a first force that acts on the first lever and generating a second force that acts on the frame;
a second spring deformable in response to a movement of the second lever relative to the frame, the second spring being capable of generating a third force that acts on the second lever and generating a fourth force that acts on the frame;
a coupling member configured to transmit a rotational force to rotate the developing roller, the coupling member having a rotational axis about which the coupling member is rotatable, and the coupling member being movable relative to the frame in a direction of its rotational axis; and
a third spring urging the coupling member in the direction of the rotational axis of the coupling member,
wherein the first lever and the first spring are positioned at a first end portion of the frame in a direction of the rotational axis of the developing roller,
wherein the second lever and the second spring are positioned at 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 the coupling member and the third spring are positioned at the first end portion of the frame, and
wherein a part of the first spring and a part of the third spring are positioned in a plane that is perpendicular to the rotational axis of the developing roller.