| 摘要 |
PURPOSE:To prevent the surface of an amorphous silicon photoconductor from deteriorating and to improve its brush resistance by employing a non-corona type electrostatic charging electrode contact system for all electrostatic charging mechanisms and using a conductive brush for electrostatic charging as a main charging mechanism. CONSTITUTION:The conductive brush 15 has a tip part 16 which contacts the surface of a drum photoconductor layer 2 and its shaft part is connected to a power source 18 for main electrostatic charging by a connection 17. The tip 16 of the conductive brush 15 for electrostatic charging is applied with a constant voltage based upon the conductive substrate 1 of a photosensitive body and the brush tip 16 and photoconductor layer 2 contact each other to supply the electrostatic charge of the constant voltage to the surface of the photoconductor layer 12 uniformly. A toner image is transferred to transfer paper 14 on a non-corona basis and none of electrostatic discharging products such as ozone and nitrogen oxide is generated, so there is neither the surface deterioration of the photosensitive layer nor the formation of a hydrophilic surface and the brush resistance of the photosensitive body is improved greatly. |
