Patent ID: 6070028
Filing Date: 2000-05-30
Classification: G03G

Abstract:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, comprising:an electrophotographic photosensitive member;a cartridge coupling member, provided coaxially with said electrophotographic photosensitive member, for engaging with a main assembly coupling member provided in the main assembly of the apparatus to receive driving force for rotating said electrophotographic photosensitive member from the main assembly of the apparatus when said process cartridge is mounted to the main assembly;a developing roller for supplying toner to said electrophotographic photosensitive member to develop a latent image formed on the photosensitive member;a driving force transmission member, disposed at one longitudinal end of said electrophotographic photosensitive member to transmit the driving force from the electrophotographic photosensitive member to said developing roller;a driving force receiving member, engaged with said driving force transmission member and disposed at one longitudinal end of said developing roller, for receiving the driving force for rotating said developing roller from said electrophotographic photosensitive member; anda magnetic seal member, disposed with a gap from said developing roller, for preventing leakage of the toner in a longitudinal direction of said developing roller, wherein magnetic force provided on a surface of said developing roller by said magnetic seal member is approximately 1000-2000 Gauss.