| 摘要 |
PURPOSE:To reduce size of an entire form and to facilitate its manufacture, by utilizing the major part of the optical system of a copying section as it is also for the optical system of reading and writing through laser beams. CONSTITUTION:In-mirror lens 13 is composed of copying lens 4 and optical filter 13 characteristic of transmitting red and near infrared wavelength lights and reflecting shorter wavelength light substituted for an ordinary mirror in the in-mirror part. Laser beam deflector 16 is arranged just behind filter 13, the laser beams of reading laser beam source 14 are led through the in-mirror lens to an original face, and the laser beams of writing laser source 15 to a photoreceptor face. Each light path is made almost same as that of the copying optical system by inclining each beam source, thus permitting the entire form of the apparatus to be made compact. |
