Patent ID: 6266502
Filing Date: 2001-07-24
Classification: G03G

Abstract:
A cleaning frame used in a process cartridge which is detachably mountable to a main body of an electrophotographic image forming apparatus, wherein the process cartridge includes an electrophotographic photosensitive drum, and a cleaning member for removing developer adhered to said electrophotographic photosensitive drum, said cleaning frame comprising:a drum attaching portion for attaching said electrophotographic photosensitive drum;a cleaning member attaching portion for attaching said cleaning member;one end wall provided at one longitudinal end of said cleaning frame;other end wall provided at other longitudinal end of said cleaning frame;an exposure opening for receiving information light to be illuminated onto said electrophotographic photosensitive drum attached to said drum attaching portion when said process cartridge is mounted to the main body of said electrophotographic image forming apparatus; anda reinforcing member provided between said one end wall and said other end wall along the longitudinal direction of said cleaning frame, said reinforcing member being disposed at a side opposite to a side at which said exposure opening is provided in said cleaning frame in a direction transverse to the longitudinal direction of said cleaning frame,wherein a gap between said reinforcing member and a deep side wall opposed to said cleaning member attached to said cleaning member attaching portion at a side opposite to the side at which said exposure opening is provided in the direction transverse to the longitudinal direction of said cleaning frame is 0.5 mm to 3.0 mm.