A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the...http://www.google.de/patents/US7953340?utm_source=gb-gplus-sharePatent US7953340 - Process cartridge having electrical contact and image forming apparatus having electrical contact in urging member
