Color image forming device


PURPOSE:To improve image quality by preventing the occurrence of fluctuation in the rotational speed of a photosensitive body. CONSTITUTION:A control signal is outputted (correction current is supplied) to a photosensitive body motor 27 synchronously with the output of a signal to the clutch 31 or 34 of a developing unit by means of a main body sequence control system which carries out device main body sequence control. In the control operation by the main body sequence control system, the order in which the developing units of corresponding colors come into contact with the photosensitive body is predetermined, and the correction current is caused to flow in the photosensitive body motor 27 at the same time as the development command. Therefore, the fluctuation in the turning condition of the photosensitive body can be prevented by coming into contact with the developing unit of each color.




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