| 摘要 |
PURPOSE:To prevent filming of silica, etc., produced on the surface of a photosensitive drum and to prevent the deterioration of the surface caused by the exposure of the drum surface to an oxidizing atmosphere produced by the operation of a discharger. CONSTITUTION:When the device detects by the number of counts of a sheet-feed counter that the number of transfer sheets has reached a prescribed number, the surface of the drum 1 is electrified with no sheet fed. In the specific area on the surface of the drum 1, a solid image is developed by the sticking of toner, and the image developed with toner is scraped off by a cleaning blade 12 without being transferred to a sheet. In the removal process, the surface of the drum 1 is ground by abrasive function which toner itself has. |
