IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To provide an image forming apparatus that hinders color drift and image failure by suitably controlling a peripheral speed difference between a photoreceptor drum and an intermediate transfer belt and a peripheral speed difference between the intermediate transfer belt and a secondary transfer roller.SOLUTION: A secondary transfer motor drive control unit 155 drives a secondary transfer motor 300 so as to satisfy a follower condition for an intermediate transfer belt 51 and a secondary transfer roller 81. By satisfying the follower condition, the peripheral speed difference between the intermediate transfer belt 51 and the secondary transfer roller 81 is suitably controlled to such a degree that color drift and image failure are hindered. The follower condition means that, for example, if TL≥Tm, TL-Tm≤uF is established, and if TL-Tm≤uF, Tm-TL