| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that upon supplying a toner to a cleaning blade in an image forming unit in an upstream side where an image is not formed, when a photoreceptor is charged by sliding with the cleaning blade, an image outputted in an image forming unit in a downstream side is partially chipped.SOLUTION: In a supply mode, when a control unit applies a DC voltage to developing means in a first image forming unit to form a toner image on a photoreceptor, the control unit applies an AC voltage equal to or higher than a discharge start voltage value to charging means without applying a DC voltage. |
