| 摘要 |
PURPOSE:To prevent the occurrence of image blurring by controlling an electrifying process to an electrophotographic sensitive body. CONSTITUTION:The electrophotographic sensitive body is firstly electrified to positive polarity. Then, the electrophotographic sensitive body whose surface is given positive electric charges performs image exposing to form an electrostatic latent image in response to an image. A developed image is transferred and fixed. After the photosensitive body is irradiated with destaticizing beam, it is electrified by a negative electrifying corona. In this case, the electric current value of negative electrification must be 1-1/10 times as large as the one used for electrifying to the positive polarity. Firstly, the negative electrification is performed and the positive electric charges are induced on an interface between a surface layer 4 and a light conductive layer 3 so that negative electric charges are neutralizes which are induced by subsequent positive electrification. Thus, the accumulation of electrons on the interface is prevented which is caused by the repetition of copying, thereby eliminating the image unsharpness. |
