Patent ID: 8644730

Claim:
A process cartridge comprising: a drum cartridge configured to hold a photosensitive drum; a developing cartridge, which is configured to hold a developing roller at a first end portion thereof, and which is configured to be detachably mounted to the drum cartridge; a lock member, which is provided to the drum cartridge, and which is configured to displace between: a lock position at which the developing cartridge is prevented from being detached from the drum cartridge; and a lock release position at which detachment of the developing cartridge from the drum cartridge is permitted; an operation member configured to displace the lock member from the lock position to the lock release position; and a lifting member configured to lift a second end portion opposite to the first end portion of the developing cartridge from the drum cartridge as the lock member is displaced from the lock position to the lock release position, wherein the developing cartridge comprises: a developing-side holding part, which is provided to the second end portion of the developing cartridge, and which extends in a direction orthogonal to the lifting direction of the second end portion of the developing cartridge from the drum cartridges; an engagement part that is opposed to the lock member located at the lock position from an upstream side of the lifting direction; and an input part, wherein the lifting member is configured to contact the input part and apply force in the lifting direction to the input part, and wherein the drum cartridge comprises a drum-side holding part that extends in parallel with the developing-side holding part while being opposed to the developing-side holding part in the lifting direction when the developing cartridge is mounted to the drum cartridge.