| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of suppressing fogging while maintaining stable image density even after the image forming speed is changed.SOLUTION: Voltages Vdr and Vrs are controlled so that a difference between Vrs and Vdr shifts to a direction of a polarity reverse to a charge polarity of toner as the absolute value S of a circumferential speed difference between a photoreceptor drum and a developing roller becomes smaller. |
