Patent ID: 11874625
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. An image forming apparatus comprising:
a main body including a pressing member; and
a developing cartridge detachably mountable to the main body, the developing cartridge including:
a developing roller configured to contact a photosensitive drum, the developing roller being rotatable about a rotational axis of the developing roller,
a developing frame provided with a toner accommodating chamber, the developing frame including an end portion with respect to a direction of the rotational axis of the developing roller,
a pressed member,
a spring urging the pressed member,
a member provided at the end portion, the member provided with an opening,
a developing coupling provided at the end portion, the developing coupling configured to receive a driving force from the main body, and
a toner supplying roller configured to rotate while contacting the developing roller,

wherein, in a state where the developing cartridge is detached from the main body, at least part of the pressed member is exposed from the opening, and
wherein, in a state where the developing cartridge is mounted to the main body, the pressing member presses the pressed member such that the spring is compressed,
wherein the developing coupling is configured to receive the driving force and the developing coupling is operatively connected to the developing roller and the toner supply roller such that the driving force is transmitted from the developing coupling to the developing roller and the toner supply roller, and the developing roller and the toner supply roller are thereby rotated.