| 摘要 |
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the image forming apparatus including a cam member movable between a first position and a second position away from the first position, the process includes an electrophotographic photosensitive drum; a developing roller, contacted to the electrophotographic photosensitive drum, for developing an electrostatic latent image formed on the drum; a first frame for supporting the drum; a second frame for supporting the developing roller, the second frame being connected with the first frame for relative rotation about a shaft which is disposed downstream of the developing roller with respect to a mounting direction in which the process cartridge is mounted to a main assembly of the apparatus; an entering portion, provided at one end portion of the second frame with respect to a longitudinal direction of the drum and disposed downstream of the shaft with respect to the mounting direction, for permitting at least a part of the cam member with respect to the longitudinal direction to enter when the process cartridge is mounted to the main assembly of the apparatus; and a cam engaging portion for engagement by the cam member to receive from the cam member a force for spacing the drum and the developing roller from each other, the cam engaging portion being disposed at the one longitudinal end portion of the second frame and downstream of the entering portion with respect to the mounting direction.
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