The motor that drives a reverse unit, and a CPU configured to switch an image formation mode between a full color mode for forming an image using image forming stations and a black and white mode for forming an image using the image forming station are provided. If the image is formed on a first recording material supplied by a sheet feeding roller pair and subsequently an image is formed on a second recording material supplied by a sheet refeeding unit, the motor continuously drives the reverse unit. If the image formation mode for the first recording material is different from the image formation mode for the second recording material, the CPU switches the image formation mode to the full color mode, and forms the images on the first recording material and the second recording material.