| 摘要 |
PROBLEM TO BE SOLVED: To always stably drive an image carrier and an intermediate transfer body and to stably obtain excellent image quality by providing a 1st driving means directly driving the image carrier and a 2nd driving means directly driving the intermediate transfer body and providing a driving control means switching and controlling the driving of the respective driving means. SOLUTION: Only the 1st driving source 41 connected to a photoreceptor 20 is driven and the intermediate transfer body 30 and the 2nd driving source 42 connected to the transfer body 30 follow the driving source 41 in the electrification, the first color exposure, the developing, the primary transfer and the cleaning stages of the photoreceptor 20 and until finishing the final color exposure, the developing and the primary transfer. In the stages, a transfer roll 32 and an intermediate transfer body cleaner 33 are separated from the transfer body 30. When the primary transfer stage is finished, a secondary transfer stage for transferring a toner image to paper is started. In this stage, the roll 32 and the cleaner 33 come in contact with the transfer body 30, and only the driving source 42 is driven and the photoreceptor 20 and the driving source 41 follow the driving source 42. |
