| 摘要 |
PURPOSE:To always obtain a copied image of high quality by changing potential for uniformly charging a pohtoreceptor in accordance with the extent of regulation of an image regulating means. CONSTITUTION:A photoreceptor 1 is manufactured using an N type semiconductor such as CdS. The surface of the photoreceptor is uniformly charged to about 1,500V with a primary charger 2. The charged surface is imagewise exposed, and almost simultaneously it is destaticized with a secondary destaticizer having reverse polarity to the charger 2 or an AC secondary destaticizer 3. The quantity of light from an illumination lamp is first changed, and from a certain point of time, corona discharge conditions during the formation of a latent image are changed while keeping the quantity of light for illumination at a constant value. |
