| 摘要 |
PURPOSE:To obtain a color image having high quality without a color slippage by providing a second control means to control the driving speed of an image carrier and a third control means to control the driving speed of a supporting body driven by the second driving means based on a reference signal generated by a generating means. CONSTITUTION:As for the rotational driving of a photosensitive drum 1 and a transferring drum 13, the synchronization control of the rotational driving of the photosensitive drum 1 and the transferring drum 13 is executed so as to generate the clocks for control of a photosensitive drum motor control circuit 61 and a transferring drum motor control circuit 59 inputted respectively to a photosensitive drum motor driving circuit 68 to drive the photosensitive drum motor 61 and a transferring drum motor driving circuit 72 to drive a transferring drum motor 69 corresponding to a reference signal from a reference signal generating circuit 93. Thus, even when the multiple transfer at every color is executed, image forming processing without generating the color slippage is attained and the color image having high quality without the color slippage can be formed. |
