| 摘要 |
PROBLEM TO BE SOLVED: To prevent an image deviation due to cleaning of a rotary body for electrification by a cleaning member from occurring and to obtain an excellent image extending over a long term by setting the rocking cycle of an image carrier rocked in accordance with a rubbing action to be 1/n (n: integer) cycle of time that a recording medium is moved between respective image stations. SOLUTION: The shaft 16a of a plate cam 16 is axially supported by the main body side of a color image forming device and driven to be rotated by a driving source. The cam 16 is a decentering cam, and by the rotation of the cam 16, a driven node 5 is moved back and forth at a constant stroke together with the cleaning member 4. By this forward and backward movement, the electrification roller 3 is cleaned by the cleaning member 4. Besides, the roller 3 and the photoreceptor 1 are rocked within a range such as a gap between shaft supporting parts by the forward and backward movement. The rotating cycle of the cam 16 is set to be 1/2 cycle of the time that the transfer material is carried between the respective image stations 8Y, 8M, 8C and 8BK. Thus, the deviation of all of four colors at a transfer position can be made to coincide with one another. |
