| 摘要 |
<p>An image forming apparatus includes an image carrier (2), a charge roller (3), a cleaning brush (30) and a distance changing mechanism. The charge roller includes a surface having protrusions and depressions and to electrically charge the image carrier. The cleaning brush includes a brush part (30a) cleaning the surface of the charge roller and a main body part (30b) supporting the brush part. The brush part includes a top end part (30c) and a belly part (30d) being nearer to the main body part than the top end part. The distance changing mechanism changes a distance between the charge roller (3) and main body part (30b) so that, by adjusting the distance to a first distance, the top end part (30c) contacts with the depression and, by adjusting the distance to a second distance shorter than the first distance, the belly part (30d) contacts with the protrusion. [ Fig.2 ]</p> |
