Patent ID: 6029027
Filing Date: 2000-02-22
Classification: G03G

Abstract:
A developing cartridge for developing a latent image formed on an electrophotographic photosensitive member, which is detachably mountable relative to a main assembly of an electrophotographic image forming apparatus, said developing cartridge comprising:a cartridge frame;a developing roller for developing the electrostatic latent image formed on the electrophotographic photosensitive member;toner accommodating portion for accommodating toner to be used for development by the developing roller;a driving force receiving member for receiving driving force for rotating said developing roller, from the main assembly of apparatus when said developing cartridge is mounted to the main assembly, wherein said driving force receiving member is exposed from a portion of said cartridge frame, provided at one longitudinal end portion;a developing bias contact for receiving a developing bias to be applied to said developing roller from the main assembly of the apparatus, when said developing cartridge is mounted to the main assembly;wherein said developing bias contact is within a range of 140.degree. to 175.degree. from a line connecting a center of rotation of said developing roller and a center of rotation of said driving force receiving member in a center of rotation as seen from an outside of such a portion of said cartridge frame as has said developing bias contact, in a longitudinal direction of said developing roller.