| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the occurrence of image defects or electrostatic charge defects, by properly recovering transfer residual toner sticking on an electrostat ic charging roller. SOLUTION: By arranging a sponge roller 20, an open-cell type foamed body is constituted in a freely rotational manner, and coming into contact with the charging roller 7 for electrifying a photosensitive drum 1, since the transfer residual toner stuck on the sponge roller 20 can be recovered by fetching it into bubbles in the sponge roller 20, dirt derived from the transfer residual toner on the charging roller 7 surface is eliminated, therefore satisfactory images can be obtained by preventing the charge defect.</p> |
