| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a means for preventing carrier flying towards a photoreceptor drum from a developing unit before the photoreceptor drum completely stops after an instruction to stop is given to a motor that drives the photoreceptor drum. <P>SOLUTION: In the image forming apparatus 1, a control signal instructing to stop the application of a development bias is generated after a control signal instructing to stop the application of a charging bias is generated when a print job is finished and after a potential difference between the developing unit 9 and the face of the photoreceptor drum 6, of which face is opposite to the developing unit 9, at the stop of the application of a development bias has become smaller than a carrier fly potential difference Vk, by which the carrier flying may be caused from the developing unit 9 to the photoreceptor drum 6, and before the potential of the photoreceptor drum 6, which face is opposite to the developing unit 9, becomes smaller than the development bias. <P>COPYRIGHT: (C)2007,JPO&INPIT |
