PRESSURE FORCE RELEASE MECHANISM, ELECTRIFYING DEVICE, PROCESSING CARTRIDGE AND IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent compressed permanent deformation on a surface of abutment of an electrifying roll that is pressurized and abutted to a photoreceptor drum and the photoreceptor drum. ;SOLUTION: In this device, rotations of the photoreceptor drum 1 and the electrifying roll 2 are stopped at the time of non image formation. At this non image formation time, transmission of rotation torque from a shaft part 20a is not carried out to a torque limiter 21, a rotating lever 22 is pushed back to a specified position by repulsing force of a pressure spring 23, a state where no abutting force is imparted to the electrifying roll 2 and the generation of a compressed permanent deformation on the surface of abutment of the electrifying roll 2 with the photoreceptor drum 1 can be prevented.;COPYRIGHT: (C)2000,JPO