| 摘要 |
PURPOSE:To form an image with deviated magnifications in two mutually orthogonal directions by inhibiting a lens unit to which two lenses differing in power longitudinally and laterally are fixed from being mounted unless the unit faces in a specific direction. CONSTITUTION:When a photosensitive body 8 is exposed to an image of an original on an original platen 1 through a zoom lens 6, mirrors 5 and 7, etc., the lens unit 14 for deviated magnification image formation is mounted on a unit guide support member 13 provided on an optical path to form an image with deviated magnifications on the photosensitive body 8. This lens unit is constituted by fixing the two lenses 18 and 19 differing in power from each other in a frame body 15 having an entrance aperture 16 and an exit aperture 17, and this can not be mounted in the guide support part 13 of the frame 15 unless the unit is set correctly in not only an upper and a lower, but also a left and a right direction, so a copy of deviated magnifications is taken without any error in mounting. |
