An image forming apparatus includes an image forming unit, an intermediate transfer belt, a brush roller, a drive mechanism, a contact control mechanism, and an operation control unit. The image forming unit includes a photoconductor drum, and forms a toner image on an outer circumferential surface of the photoconductor drum. The operation control unit is configured to perform a cleaning mode including cleaning the brush roller while an image forming operation is not being performed, cause the contact control mechanism to set the photoconductor drum and the intermediate transfer belt to the non-contact phase in the cleaning mode, and cause the drive mechanism, in the non-contact phase, to drive the brush roller to rotate at a rotation speed higher than a rotation speed of the brush roller in the image forming operation, and drive the intermediate transfer belt.