US 12,346,053 B2
Image forming apparatus with first and second couplings for transmission of a rotational drive force to a unit attachable and detachable therefrom
Shinkichi Yamamoto, Shizuoka (JP); Hiroshi Kawamura, Shizuoka (JP); Yuta Kawaguchi, Shizuoka (JP); and Hideto Chino, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 8, 2023, as Appl. No. 18/464,143.
Claims priority of application No. 2022-152609 (JP), filed on Sep. 26, 2022.
Prior Publication US 2024/0103422 A1, Mar. 28, 2024
Int. Cl. G03G 15/00 (2006.01); G03G 21/16 (2006.01); G03G 21/18 (2006.01)
CPC G03G 15/757 (2013.01) [G03G 21/1623 (2013.01); G03G 21/1647 (2013.01); G03G 21/186 (2013.01); G03G 2221/1657 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
an apparatus body including a drive source configured to supply a driving force, a rotary member configured to be rotated in a first rotation direction about a rotation axis by the driving force, and a first coupling rotatable about the rotation axis and movable in an axial direction of the rotation axis with respect to the rotary member; and
a unit attachable to and detachable from the apparatus body, the unit including a second coupling configured to receive the driving force by engaging with the first coupling,
wherein the rotary member includes an abutting portion,
wherein the first coupling includes an abutted portion configured to be abutted with the abutting portion, and is configured to rotate in the first rotation direction together with the rotary member in a case where the abutting portion presses the abutted portion, and
wherein the apparatus body further includes a first urging member configured to urge the first coupling in a second rotation direction opposite to the first rotation direction so that contact between the abutted portion and the abutting portion is maintained by an urging force of the first urging member.