Yoshiyuki Batori

Toner frame and process cartridge

Seal member, toner container and process cartridge

Process cartridge having electrical contact connectable to electrical contact in electrophotographic image forming apparatus

Process cartridge and electrophotographic image forming apparatus with covered gear

Parts, and part supplying methods

Image forming apparatus rotationally driving image bearing member and contact electrifying member of process cartridge and process cartridge comprising image bearing member and contact electrifying member

Developing unit, process cartridge and electrophotographic image forming apparatus

Dismounting and mounting methods for coupling and electrophotographic photosensitive drum unit

Process cartridge, mountable to an image forming apparatus, having first contact portion to be guided by a guide when mounted and second contact portion to limit cartridge rotation or movement when mounted, and image forming apparatus mounting such a process cartridge

Image forming apparatus on which a process cartridge is detachably mounted and a process cartridge detachably mountable to a main body of an image forming apparatus including a grip portion