DEVELOPING DEVICE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To attain the saving of space around a flange fixed in the end part of a developing roller and the stabilization of electric conduction. SOLUTION: As the contact of the developing roller 10d disposed in a developing container constituting a process cartridge, a coil spring 120 whose winding direction is opposite to the rotational direction of the developing roller 10d is located inside the flange 10f. In such a case, when a developing roller gear 10g is rotated, the contact pressure between a hole 10f1 and the coil spring 120 is increased so that dust never enters into a contact part 120a.