| 摘要 |
PURPOSE:To prevent a glid wire from toner pollution effectively and to keep high copying quality by forming a clean air feeder for supplying clean air into a shielding member. CONSTITUTION:When a scorotron electrifier is driven, ion air B is generated and air containing toner or the like tries to flow into the shielding member 4. Since cleaned air is always supplied into the shielding member 4 from a filter 9 in the clean air feeder 5, the shielding member can be effectively prevented from the inflow of air containing toner or the like. Even if the scorotron electrifier is driven over a long period, a glid wire 3 prevented from the adhesion of toner or the like is effectively worked and a low potential part is raised, so that the distribution of an electric field is uniformed and a prescribed uniform electrostatic charge potential can be obtained on the surface of a photosensitive body 1. |
