| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem in which: it has been difficult to switch a photoconductor drum for moving residual toner remained on an intermediate transfer belt, while reducing the number of voltage power supplies dedicated for primary transfer. <P>SOLUTION: Current supplied from a current supply member flows in a circumferential direction of an intermediate transfer belt, so that toner images are primary-transferred from an image carrier to the intermediate transfer belt in a plurality of primary transfer units. Exposure light from exposure means to each image carrier is controlled in such a way that a difference in potential that occurs between an image carrier that moves charged residual toner from the intermediate transfer belt and the intermediate transfer belt is larger than a difference in potential that occurs between an image carrier that does not move charged residual toner from the intermediate transfer belt and the intermediate transfer belt. <P>COPYRIGHT: (C)2013,JPO&INPIT |
