| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of reducing the deviation of AC color registration by appropriately and completely restraining the periodical fluctuation of rotation occurring by eccentricity caused by various rotating bodies, which are driven to be rotated, such as a photoreceptor drum, a transfer belt and an intermediate transfer body belt themselves or the attachment of the rotating bodies, eccentricity caused by the clearance error of the driving shaft of the rotating body and the unevenness of the thickness of the belt. SOLUTION: A phase difference between the latent image writing position SP and the transfer position TP of an image carrier 01 (01C, 01M, 01Y and 01K) is set to about 180 deg.. The device is provided with a pattern detection means 07 detecting a pattern for detection formed on an endless carrier 03 and a driving control means 08(08C, 08M, 08Y and 08K) performing control for individually finely adjusting the rotating speed of the rotating body such as the image carrier and the endless carrier according to the information on a vibration component concerning the periodical fluctuation of the rotation obtained by the detection means 07 so as to negate the fluctuation of the rotation. |
