| 摘要 |
An electrophotographic process includes performing main charging by direct current corona discharge and imagewise exposure on an organic photoconductive photosensitive layer chargeable at both positive and negative polarities, developing a formed electrostatic image with a magnetic brush of a toner, bringing the photosensitive layer bearing a toner image thus formed thereon into contact with a copying sheet, performing transfer of the toner by direct current corona discharge of the same polarity as that of the main charging step applied to the back surface of the copying sheet, and cleaning the photosensitive layer, from which the toner has been transferred, with the magnetic brush after removal of residual charge. The injected current of the direct current corona discharge during the transfer of the toner is set at a level 23 to 35 times the injected current initiating the transfer of the toner. After the transfer of the toner, the photosensitive layer is subjected to direct current corona discharge of a polarity reverse to the polarity of the direct current corona discharge for main charging to charge the residual at a uniform polarity. |
