According to one embodiment, an image forming apparatus includes an intermediate transfer belt, multiple first type photoconductive drums, multiple first type transfer rollers, a second type photoconductive drum, a second type transfer roller, a roller, and a roller moving unit. The multiple first type transfer rollers are arranged at positions that face the multiple first type photoconductive drums. The second type photoconductive drum is arranged at a position where the drum surface of the second type photoconductive drum is not tangent to a common tangent plane. The roller is arranged on the inner peripheral side of the intermediate transfer belt and is arranged between the second type transfer roller and one first type transfer roller. The roller moving unit moves the roller by pressing the roller. The roller moving unit changes the state of abutting of the multiple first type photoconductive drums and the second type photoconductive drum.