Patent ID: 8725054

Claim:
An image forming device comprising: a plurality of photosensitive bodies configured to carry toner images, respectively; a belt configured to carry a medium along a path; a plurality of recovering members that are respectively provided for the plurality of photosensitive bodies, wherein each of the recovering members is configured to recover adhered substances remaining on a respective one of the photosensitive bodies after a respective one of the toner images is transferred to the medium; a belt cleaner configured to remove the adhered substances from the belt; a cleaning process execution unit configured to control at least one of the photosensitive bodies, at least one of the recovering members, and the belt to execute a cleaning process in which the adhered substances are transferred from the at least one of the recovering members to the belt via the at least one of the photosensitive bodies; and a cleaning time determination unit configured to determine a time period for executing the cleaning process by identifying which one of the plurality of photosensitive bodies used in a preceding print job is farthest along the path from the belt cleaner, wherein the time period is based on a distance between the belt cleaner and the identified photosensitive body.