| 摘要 |
PURPOSE:To prevent a light fatigue, etc., of light conductive layer in recording media and to form always a true and visible image to a picture on the recording media by providing a pre-electro static charge part to execute the electro static charge of the same polarity as the electro static charge part before the action by the electro static charge or electro static discharge part, or before the action by the electro static discharge part. CONSTITUTION:A photo sensitive body 1 is charged equally to the special polarity by a main charging device 2. The reflecting light from an original is image-formed (exposured), and an electro-static latent image is formed on the photo sensitive body surface in accordance with an original image. The latent image on the photo sensitive body 1 is developed by a developing device 4. The developed image, namely, the toner image is electro-staticably transferred by the action of a charging device 5 for transfer onto a transferring material 6. Further, to re-use the photo sensitive body 1, the toner, which remains on the surface of the photo sensitive body, is removed by a cleaning device 7, the surface condition is equal ized by a light discharging device 8 and the next image formation is prepared. In the next image formation, when the process is repeated, the photo sensitive body 1 is pre-charged by a pre-charging device 9 before the body is charged by the main charging device beforehand. The charging polarity of the pre-charging device 9 is the same polarity as the charging polarity by the main charging device 2.
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