| 摘要 |
A process cartridge detachably mountable to a main assembly of an image forming apparatus includes an electrophotographic photosensitive member; process means actable on the photosensitive member; a cartridge frame; a first projection for positioning the process cartridge relative to the main assembly when the process cartridge is mounted to the main assembly, the first projection being outwardly projected from a first frame of the cartridge frame adjacent an axial end of the photosensitive member, a second projection for positioning the process cartridge relative to the main assembly when the process cartridge is mounted to the main assembly, the second projection being outwardly projected from a second frame of the cartridge frame adjacent another axial end of the photosensitive member; a confining contact portion, in the cartridge frame, for contacting a first fixed portion of the main assembly and cooperating with the first projection and second projection to correctly position the process cartridge relative to the main assembly, when the process cartridge is mounted to the main assembly; and a releasing contact portion, in the cartridge frame, for contacting a second fixed portion of the main assembly to provide a pivot of rotation of the process cartridge, when the process cartridge is demounted from the main assembly.
|
