Patent ID: 8254806

Claim:
A process cartridge that is configured to be detachably installable in an image forming apparatus, comprising: a frame having an opening, wherein the opening is long in a predetermined direction; a photosensitive drum configured to be held in the frame, a portion of a surface of the photosensitive drum being opposite to the opening of the frame, the photosensitive drum extending along a longitudinal direction of the opening; a protection member including: a linear body portion extending in the longitudinal direction; and a support portion extending from an end of the linear body portion in a direction perpendicular to the longitudinal direction; and a lock member having a groove portion, wherein the support portion is supported on the frame so as to be rotatable about an axis that extends along the longitudinal direction, wherein the linear body portion is movable between a protecting position and a retreat position, wherein, in the protecting position, the linear body portion faces the opening in such a state that the linear body portion is not in contact with the frame, wherein, in the retreat position, the linear body portion faces a peripheral portion of the opening of the frame, and wherein, when the protection member is in the protecting position, a direction in which the support portion extends is substantially the same as a direction in which the groove portion longitudinally extends.