Patent ID: 8032044

Claim:
An image forming apparatus comprising: an image forming unit configured to form a toner image onto a recording sheet; a fixing unit configured to thermally fix the toner image onto the recording sheet; a detection unit configured to detect a toner use amount when the toner image is formed by said image forming unit; a storage unit configured to store toner use amounts detected by said detection unit for respective pages; and a control unit adapted to control a recording sheet conveyance interval, wherein said control unit controls the recording sheet conveyance interval in image formation on a first set of plural sets based on a toner use amount detected by said detection unit for each page of the first set and causes said storage unit to store toner use amounts used for respective pages of at least the first set, and controls the recording sheet conveyance interval in image formation on a second set following the first set of the image formation based on the toner use amount stored, in image formation of the first set, in said storage unit for each page of the second set.