Patent ID: 8929772
Filing Date: 2015-01-06
Classification: G03G

Abstract:
1. An image forming apparatus for forming an image on a recording material, said image forming apparatus comprising: a main assembly; a supporting member movable in a state of supporting a plurality of developing cartridges that each include a developing roller for developing an electrostatic latent image formed on a photosensitive drum, said supporting member movable through a main assembly opening of said main assembly between (i) an inside position in which said supporting member is inside said main assembly and (ii) an outside position in which said supporting member is outside said main assembly and in which the plurality of developing cartridges is detachably mountable, said supporting member supporting a plurality of photosensitive drums, and said supporting member being capable of movably supporting the plurality of developing cartridges so as to move the developing rollers to and away from respective photosensitive drums; a contacting and spacing member provided in said supporting member and movable between (i) a first position for contacting the developing rollers to said respective photosensitive drums and (ii) a second position for spacing the developing rollers from said respective photosensitive drums by applying a force to the plurality of developing cartridges; a door for opening and closing said main assembly opening; and a plurality of main assembly side coupling members provided to each correspond to a respective one of the plurality of developing cartridges, wherein said plurality of main assembly side coupling members are engageable with developing device coupling members provided in the plurality of developing cartridges to transmit a driving force for rotating the developing rollers in interrelation with closing of said door.