| 摘要 |
<P>PROBLEM TO BE SOLVED: To clean a collecting member without making toner on the collecting member enter a developing device and to reduce deterioration in throughput accompanying the operation of cleaning the collecting member with a simple configuration. <P>SOLUTION: An image forming apparatus includes a controlling means that executes cleaning operation of transferring toner collected to a cleaning roller 7 to a conveyance belt 11 via a photosensitive drum 2 by forming, between the photoreceptor drum 2 and the cleaning roller 7, a potential gradient for transferring toner collected to the cleaning roller 7 to the photoreceptor drum 2 and forming, between the photoreceptor drum 2 and a transfer roller 10, a potential gradient for transferring toner having transferred from the cleaning roller 7 to the photoreceptor drum 2 to a conveying belt 11, and collecting the toner by a cleaning device 15. In the cleaning operation, the controlling means develops at least a surface portion to which the toner is transferred from the cleaning roller 7, in the surface portion of the photosensitive drum 2, with the toner by the developing device 9. <P>COPYRIGHT: (C)2011,JPO&INPIT |
