| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent occurrence of external leakage of toner while promoting a pumicing effect in a cleaning-device with a rubbing roller used for pumicing a photoreceptor drum surface.SOLUTION: A cleaning-device 50 includes a rubbing roller 51, a blade 52, a supply roller 53 and a urethane seal 57. The rubbing roller 51 pumices a circumferential surface of a photoreceptor drum 121 by being rotated around an axis of the roller. The blade 52, including an edge portion abutting on the circumferential surface, removes toner therefrom. The supply roller 53, being rotated, supplies the rubbing roller 51 with toner. When defining, in an axial direction, L1 as a contact length with which the rubbing roller 51 contacts with the photoreceptor drum 121, L2 as a contact length with which the supply roller 53 contacts with the rubbing roller 51, L3 as a maximum image length of a toner image on the photoreceptor drum 121, and L4 as a length of the urethane seal 57, the following conditions are satisfied: L1<L4 and L1>L2≥L3.</p> |
