Conventionally, an electrophotographic image forming apparatus by
means of an electrophotographic image forming process has a process cartridge which
integrates the electrophotographic photosensitive body and process means into a
cartridge which can be detachably mounted on the image forming apparatus. In order
to obtain a fine image in that kind of image forming apparatus, it is necessary
that the process cartridge is mounted accurately at a predetermined position in
the image forming apparatus and interface portions of various electrical contacts
and driving transmission part are accurately connected. For improvement, process
cartridges having well mountability are provided.
