| 摘要 |
PROBLEM TO BE SOLVED: To release, in a mechanism in which a plurality of nips between rollers are present, the two rollers forming a nip from pressure in a mechanically simple way.SOLUTION: A first pivotally supporting part 241 enables an electrically charged roller 22 to be displaced in a direction toward or away from a photosensitive drum 121 and, in a state in which the electrically charged roller 22 is mounted on a cleaning roller 23, pivotally supports the electrically charged roller 22 in a state having a play in the direction toward or away. When shifting of a bushing member 24 by a compression spring 251 causes the electrically charged roller 22 to nip the photosensitive drum 121, the first pivotally supporting part 241 so pivotally supports the electrically charged roller 22 that the electrically charged roller 22 is caused by pressure from the photosensitive drum 121 to displace its position in the first pivotally supporting part 241 toward the cleaning roller 23. |
