| 摘要 |
PURPOSE:To prevent fogging and dirt caused by toner adhering onto a place except a latent image part by providing an opposite electrode which removes the toner adhering onto the non-latent image part of a photosensitive body by the action of an electric field in the way of opposing to the photosensitive body. CONSTITUTION:After being electrified in a negative potential by an electrifying means, the photosensitive body 1 is exposed to a prescribed image pattern through an exposing means; then, the exposed part becomes the latent image part 9, and the unexposed part becomes the non-latent image part 10. Thereafter, the photosensitive body 1 reaches to the part opposite to the sleeve 42 of a developing means 4. The toner 11, adhering onto the sleeve 42 on the means 4 is electrified in negative; and reaches to the part opposite to the photosensitive body 1, that is, the developing means 4. Toner 11 adheres onto the latent image part 9 and forms a toner image on the means 4. However, in the toner 11, there is the toner belongs to the non-latent image part 10 like the toner 11a. Then, the toner is carried to the part opposite to the opposite electrode 5, the toner 11a is made to adhere onto the electrode 5 by the electric field between the electrode 5 and the non-latent image part 10, and is removed from the non-latent image part 10. |
