| 摘要 |
PURPOSE:To obtain a distinct image without fogging by using a superconductive photosensitive body whose exposed part becomes an ordinary conductive area and executing exposure and development for forming an image. CONSTITUTION:When image information is given by an exposing unit 2, magnetic field occurs between a magnet 4a in a developing device 3 and a magnet 4b in the photosensitive body 1 and the line of magnetic force 21 reaches the surface of the photosensitive body 1. But the line of magnetic force 21 is pushed out from the superconductive area of a non-image part 12 and proceeds to the image part 11 of the ordinary conductive area with Meissner effect of the superconductor. The line of magnetic force 21a in the image part 11 passes through as it because the area is the ordinary one. And development is executed by flying magnetic toner 3c with magnetism from the developing roller 3b of the developing device 3 to the image part 11 along the line of magnetic force 21 like this. After all, the flown magnetic toner 3c all proceeds to the image part 11 of the photosensitive body 1 and it does not fly to the non-image part 12 at all. Thus, the distinct image without fogging can be obtained. |
