Patent ID: 7787809
Filing Date: 2010-08-31
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a first photoconductive member used during monochrome printing; a plurality of second photoconductive members used together with the first photoconductive member during full-color printing and arranged in parallel to the first photoconductive member; a transfer belt that forms a loop-like moving path, a toner image formed on the first photoconductive member being transferred onto an outer peripheral surface of the transfer belt during the monochrome printing, and toner images formed on the first photoconductive member and the respective second photoconductive members being transferred onto the outer peripheral surface of the transfer belt during the full-color printing; a first transfer roller and a plurality of second transfer rollers provided on an inner peripheral side of the transfer belt and respectively arranged in positions opposed to the first photoconductive member and the second photoconductive members; and a link member that shifts, during the full-color printing, the second transfer rollers to positions where the second transfer rollers are brought into press contact with the respective second photoconductive members via the transfer belt and shifts, during the monochrome printing, the second transfer rollers to positions where respective separations between an inner peripheral surface of the transfer belt and the respective second transfer rollers are substantially identical.