| 摘要 |
PURPOSE:To obtain a titled device excellent in operability by placing an additional lens for changing the focal distance of an optical means, and an original information read means so that they can go forward and backward freely, on the way of an optical path between the optical means and an image supporting body. CONSTITUTION:An exposing optical system 29 is provided on the upper part of a photosensitive body 10 and on the lower part of an original platen 2, and constituted of an exposing lamp 4 which executes a reciprocating motion horizontally along the lower face of the original platen 2 by a driving mechanism, reflectors 5, 6 and 7, a lens block 8 which is moved only when changing a magnification, and an immobile reflector 9. Also, an additional lens 71 and a CCD image sensor 72 are provided between the lens block 8 and the reflector 9, and these lens 71 and sensor 72 are supported so as to be freely turnable, so as to obtain a position (shown by a dotted line in the figure) crossing an optical path between the lens block 8 and the reflector 9, and a position (shown by a full line in the figure) being outside of the optical path. |
