| 摘要 |
PURPOSE:To improve reproducibility without using any filter by providing a mirror which reflects picture light to a photoreceptor with proper spectral reflection characteristics according to spectral sensitivity characteristics of the photoreceptor. CONSTITUTION:A movable mirror 7 moves to a solid line position and a broken line position 7' to change projection optical paths. Mirrors 9 and 10 have proper spectral reflection characteristics determined according to spectral sensitivity characteristics of the photosensitive drum 12 and spectral transmission characteristics of a microfilm 4. The movable mirror 7 is at the solid line position in reader state and a picture of the microfilm 4 is projected on a screen 11 through a lens 5 and mirrors 6, 7, and 8 to monitor the picture on the screen. When the movable mirror 7 moves to the broken line position, a printer state is entered and the photosensitive drum 12 which rotates is exposed the picture of the microfilm 4 through a lens 5, mirrors 6, 9, and 10, and a slit. |
