Patent ID: 8238794

Claim:
An image forming apparatus comprising: an image carrier for carrying a toner image; a drive device for driving the image carrier at a predetermined speed; a transfer device for nipping a recording sheet with a rotary member at a position opposed to the image carrier and for transferring the toner image on the image carrier onto the recording sheet; and a control device for giving instruction to the drive device to generate a variation having a phase which is reverse to a phase of a variation given to the predetermined speed of the image carrier by a vibration produced at a time of passage of the recording sheet between the image carrier and the transfer device, wherein the control device gives the instruction to generate a variation having a phase which is reverse to a phase of the variation given by a vibration produced at a time of passage of a first recording sheet between the image carrier and the transfer device, the control device giving the instruction when a second recording sheet which comes next to the first recording sheet, passes between the image carrier and the transfer device.