| 摘要 |
PROBLEM TO BE SOLVED: To make the constitution of a color slippage correction means simple and inexpensive, to easily adjust color slippage and to eliminate the slippage of respective pixels by arranging an exposure means so that a photoreceptor is scanned with a prescribed tilt and providing a device with a speed adjustment means changing the respective moving speed of the photoreceptor. SOLUTION: A relative position between the exposure means 3 and the photoreceptor drum 1a is set so that a scanning end point E is set on the more downstream side of the rotating direction of the drum 1a than a scanning start point D. Then the fluctuation rate of an image tilt on an intermediate transfer belt becomes larger in the case the circumferential speed of the drum 1a is low in comparison with the case that the circumferential speed of the drum 1a is high and it is changed in an area where the circumferential speed of the drum 1a is lower than the reference speed. Therefore, the tilt deviation in an oblique direction is adjusted in an area where the load torque of a driving source for moving the drum 1a is small and the adjustment work thereof can be made simple and inexpensive. Besides, the slippage of the respective pixels occurring when the images obtained by the optical scanning of the plural exposure means are superposed is eliminated. Thus, the high-quality image is obtained. |
