A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus includes a cartridge frame, an electrophotographic photosensitive member supported by the cartridge frame, a process device supported by the cartridge frame to act on the electrophotographic photosensitive...http://www.google.de/patents/US5937242?utm_source=gb-gplus-sharePatent US5937242 - Process cartridge and electrophotographic image forming apparatus
