Patent ID: 8000646

Claim:
An image forming apparatus comprising: an image transfer unit that transfers an image to continuous paper provided with a plurality of sprocket holes along a paper length direction on both sides in a paper width direction; an image fixing unit that fixes the image transported to the continuous paper by the image transfer unit; a transport unit that includes a plurality of protruding parts inserted into the sprocket holes on both sides in the paper width direction, that is placed downstream in a paper transport direction from the image fixing unit for moving the protruding parts in the paper transport direction, and that transports the continuous paper; a change unit that changes the spacing between the protruding parts in the paper width direction; and a control unit that controls drive of the change unit so that the spacing between the protruding parts in the paper width direction becomes narrower than the spacing between the sprocket holes in the continuous paper before image fixing in the paper width direction during image formation processing of the image transfer unit and the image fixing unit, wherein the control unit sets automatically a change amount for changing the spacing between the protruding parts in the paper width direction in response to the type of the continuous paper.