| 摘要 |
PURPOSE:To accurately copy original such as photograph and picture by automatically setting a manual exposure mode when a photographing mode is set. CONSTITUTION:When original having halftone as photograph and picture is copied, a photograph/document switching key 85 is operated to set the photographing mode and afterward, a print switch 86 is operated to copy the original. When the photographing mode is set, an electrifying potential of a photosensitive body 3 by an electrifyer 4, the bias potential of a developing roller 51 and the exposure amount of an exposure lamp 71 are set to prescribed potentials and amounts to copy the original. Namely, the electrifying potential of the photosensitive body 3 and the bias potential of the developing roller 51 are set for photographing and simultaneously the exposure lamp 71 is set to a fixed value to eliminate the fluctuation of original density. Thus, copied image is hardly whitened to be reproduced accurately. |
