A cleaning blade for removing residual toner left on the surface of an
intermediate transfer belt after the second transfer is supported
integrally with movement of a tension roller. In the case where the
tension roller moves to make a tension of the intermediate transfer belt
constant, then, following this, the cleaning blade moves. Thus, the
contact state of the cleaning blade with respect to the surface of the
intermediate transfer belt is kept constant, and thus cleaning of the
intermediate transfer belt can be performed stably.