| 摘要 |
<P>PROBLEM TO BE SOLVED: To use photoreceptors and toners for corresponding colors only for the same period of time when forming a color image using the colors and to achieve a cost reduction. <P>SOLUTION: Among image forming stations Pa-d, the photoreceptor (photoreceptor drum 222a) in the image forming station Pa corresponding to black uses a cleaning system which makes it difficult for the photoreceptor to wear in comparison with the photoreceptors (photoreceptor drums 222b-222d) in the other image forming stations Pb-d. <P>COPYRIGHT: (C)2003,JPO |
