Patent ID: 8238787
Filing Date: 2012-08-07
Classification: G03G

Abstract:
1. An electrophotographic image forming apparatus comprising: a process cartridge comprising a photosensitive member unit which includes an electrophotographic photosensitive member and comprising a developing unit which includes a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive member and which is movable toward and away from the photosensitive member unit in order that the electrophotographic photosensitive member and the developing roller can be moved toward and away from each other; and a main assembly of said electrophotographic image forming apparatus to which said process cartridge is mountable along a longitudinal direction of said electrophotographic photosensitive member, wherein (a) the developing unit includes a first portion to be urged provided on an upstream side with respect to a mounting direction of said process cartridge and includes a second portion to be urged provided on a downstream side with respect to the mounting direction, wherein (b) said main assembly comprises: a guide portion for guiding the first portion to be urged and the second portion to be urged during mounting of said process cartridge in said main assembly, wherein the guide portion includes, in a state in which said process cartridge is mounted in said main assembly, a first hole for permitting thereinto entry of the first portion to be urged and a second hole for permitting thereinto entry of the second portion to be urged; a first urging portion for urging the first portion to be urged, in a state in which the first portion to be urged enters the first hole, so as to move the developing unit with respect to the photosensitive member unit; and a second urging portion for urging the second portion to be urged, in a state in which the second portion to be urged enters the second hole, so as to move the developing unit with respect to the photosensitive member unit, and wherein (c) the second portion to be urged is non-enterable into the first hole.