Patent ID: 8600252

Claim:
A fixing device comprising: a fixing member including a first heater; a pressing member including a second heater, the fixing member and the pressing member defining a nip portion where an unfixed toner image is fixed on an image surface of a recording material; a driver configured to individually control linear velocities of outer circumferential surfaces of the fixing member and the pressing member; and a controller configured to control the driver based on temperatures of the outer circumferential surfaces of the fixing member and pressing member, wherein, in a feed mode in which the outer circumferential surfaces sandwich the recording material to fix the image on the recording material, the driver is configured to drive the fixing member and the pressing member such that the outer circumferential surfaces move at individual linear velocities to reduce a feed speed difference between front and rear surfaces of the recording material and the controller is configured to control the driver to drive the outer circumferential surfaces of the fixing member and the pressing member at individual linear velocities to reduce the feed speed difference between the front and rear surfaces of the recording material, and in a non-feed mode, the driver is configured to drive at least one of the fixing member and the pressing member and the controller is configured to control the driver to drive the at least one of the fixing member and the pressing member such that the other member is driven by the at least one member.