| 摘要 |
PURPOSE:To improve the mechanical strength, durability, photosensitivity, general purpose color property, and long-wavelength sensitivity, by providing a process electrifying a photosensitive body in the polarity which is opposite to the polarity of the charging performed to the body thereafter and can remove remaining electric charges on the surface of the body during the period from the cleaning to the electrifying of the photosensitive body. CONSTITUTION:By providing the 2nd electrifier 2' between the 1st electrifier 2 and uniform exposing section 9, the surface of a photosensitive body 1 is electrified in the positive polarity by means of the 1st electrifier 2 after the body 1 is electrified in the negative polarity and surface electric charges remaining on the surface of the photosensitive body 1 are removed. It is desirable to use a material that shows a charge injecting prohibiting property against the secondary charging and a charge-injection inhibiting property against the primary charging for making the photosensitive body 1. Moreover, the degree of the secondary electrical charging is set to a degree at which the remaining electric changes are removed and, when light irradiation is also used, to a degree at which the electric charges which cannot be removed by the light irradiation only can be removed. Therefore, the mechanical strength, durability, photosensitivity, general purpose color property, long-wavelength sensitivity, etc., of this copying machine become excellent and excellent pictures can be obtained stably. |
