| 摘要 |
PURPOSE:To obtain always stable and good pictures by fatiguing forcibly a photosensitive body having an As2Se3 photoconductive layer before copying. CONSTITUTION:A suberaser 11 which irradiates a light having about 700nm wavelength at least is provided adjacently to a main eraser 10 in the rotation direction of a photosensitive body 1. The photosensitive body 1 having the As2Se3 photoconductive layer is fatigued forcibly by the light having about 700nm wavelength. Though the photosensitive body 1 is fatigued even by the light which does not include about 700nm wavelength, the degree of fatigue in this case is low, and light sources emitting the light which does not include about 700nm wavelength are used as the main eraser 10 and a destaticizing lamp 6. When the photosensitive body 1 is much fatigued by the stop time, the photosensitive body 1 is idled under light irradiation of another light sources such as the main eraser 10 before the copying operation. When the photosensitive body 1 is less fatigued, the suberaser 11 is lit, and the photosensitive body 1 is idled under light irradiation of the suberaser 11. Thus, a stable surface potential is always secured independently of the stop time. |
