| 摘要 |
PURPOSE:To remove all of dust and toner and to prevent color mixing due to the mixing of toner powder by providing a polarizing members attracting the dust at position facing the peripheral surface part of an image formation body. CONSTITUTION:An air flow show by an alternate long and short dash line prevents toner and dust from sticking on an electrostatic charger 4, an image exposure device 6, etc., through the operation of a discharge pump and passes through the passage between a wall surface 4a and an external wall 4b and the passage between a wall surface 7a and an external wall 7b while remove matter which already sticks, so that the air is discharged. Plural polarizing rollers RL1, RL2... are arranged as polarizing members nearby developing devices 4 and 7, respective electrostatic charger 5, and respective laser devices 6 so that they cross the passages of the air flow at respective positions facing the photosensitive body 1. Consequently, the removal effect of scattered toner is improved, the mixing of different color toner is evaded, and deterioration is development condition is prevented. |
