Patent ID: 9274494
Filing Date: 2016-03-01
CPC Classification: G03G

Claim Text:
1. An image forming apparatus, comprising: a main body; and a cartridge configured to be detachably attached to the main body, the cartridge comprising: wherein the movable mechanism comprises a first movable member and a second movable member, the first movable member being configured to move between a roller contacting position, at which the first movable member causes the developer roller to contact the photosensitive member, and a roller spaced position, at which the first movable member causes the developer roller to be spaced from the photosensitive member, wherein the developer cartridge comprises a driving coupling and a gear, wherein the main body is configured to apply a driving force to the driving coupling, and the driving coupling is configured to transmit the driving force to the gear, wherein the gear comprises a projection configured to contact the second movable member, and the gear is configured to move, in accordance with the driving force, between a projection contacting position, at which the projection contacts the second movable member, and a projection spaced position, at which the projection is spaced from the second movable member, wherein the movable mechanism is configured to shift between a first state and a second state, wherein the main body comprises a detectable member configured to detect a state of the movable mechanism between the first state and the second state, wherein the detectable member is configured to detect the second state when the first movable member is located at the roller separated position irrespective of a position of the gear, wherein the detectable member is configured to also detect the second state when the gear is located at the projection contacting position irrespective of a position of the first movable member, and wherein the detectable member is configured to detect the first state when the first movable member is located at the roller contacting position and the gear is located at the projection separated position.