| 摘要 |
PURPOSE:To provide multi-functions to the titled device by setting up the 1st drum having a photosensitive body consisting of photoconductive layers having no sensitivity to a color A and sensitivity to a color B on its peripheral surface and the 2nd drum having a photosensitive body consisting of a photoconductive layer having sensitivity at least to the color A. CONSTITUTION:The photosensitive body formed on the peripheral surface on the 1st drum 1 has two photoconductive layers. Out of these photoconductive layers, the one close to the surface has the sensitivity an optional color, the color A, and the other arranged at a lower part has no sensitivity to the color A and sensitivity to a complementary color of the color A, e.g. blue. The photosensitive body formed on the peripheral surface of the 2nd drum 2 is provided with a photoconductive layer having the sensitivity at least to the color A, e.g. red. Consequently, multi-purpose reproducibility to a picture can be obtained by two- color mode which can not be expressed by the double mode of ordinary white/ black copy and the copying device can be provided with multi-functions. |
