Patent ID: 8290395
Filing Date: 2012-10-16
Classification: G03G

Abstract:
1. An electrophotographic image forming apparatus for forming an image on a recording material in a state in which a drum cartridge including an electrophotographic photosensitive drum is detachably mountable to a main assembly of said electrophotographic image forming apparatus and in a state in which a developing cartridge including a developing roller for developing with a developer an electrostatic latent image formed on the electrophotographic photosensitive drum and including a developer accommodating portion for accommodating the developer is detachably mountable to the main assembly, said electrophotographic image forming apparatus comprising: a cartridge supporting member movable, in a state of detachably supporting the drum cartridge and the developing cartridge, between an inside position in which said cartridge supporting member is located inside the main assembly and from which the drum cartridge and the developing cartridge are movable to an image forming position in which the drum cartridge and the developing cartridge effect image formation and an outside position in which said cartridge supporting member is located outside the main assembly and in which the drum cartridge and the developing cartridge are mountable and demountable; and a preventing member, provided to the developing cartridge, for preventing demounting of the drum cartridge from said cartridge supporting member in a state in which the developing cartridge is supported by said cartridge supporting member when said cartridge supporting member is located at the outside position.