An image forming apparatus according to the present invention includes 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 first transfer roller and a plurality of second transfer rollers provided on an inner peripheral side of the transfer belt; 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.