| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent deposition of developer on a developer carrier to a non-image forming area of a medium when an image formation condition is changed. <P>SOLUTION: The image forming apparatus has a developer carrier carrying the developer, a developer supply member, a developer carrier voltage application part applying a voltage to the developer carrier, a developer supply member voltage application part applying a voltage to the developer supply member, and a reset operation processing part by which, in a reset mode, a bias difference between the voltage applied by the developer supply member voltage application part and that by the developer carrier voltage application part is reduced to be smaller than a bias difference in a printing mode. In the reset mode, the bias difference is reduced to be smaller than that in the printing mode, so that increase of deposition of the developer on the developer carrier can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT |
