| 摘要 |
PURPOSE:To obtain a copy having stabilized image density by neutralizing light fatigue, by using at least two kinds of unnecessary image erasing light sources having the functions of raising and lowering a surface electric potential of a photoreceptor. CONSTITUTION:Different kinds of unnecessary image erasing light sources 7, 8 are provided between an exposing slit 3 and a developing device 4. The light source 7 is a light source to raise a surface electric potential of a photoreceptor 1 and the light source 8 is to lower said potential. When the light sources 7, 8 are irradiated to erase unnecessary images formed on the photoreceptor 1, light fatigue of the photoreceptor 1 generated by irradiaion is neutralized. By this way, even in the case of copying in an automatic original forwarding mode, a copy having stabilized image density is obtained. |
