| 摘要 |
PURPOSE:To execute very easily the adjustment of an exposure light quantity by executing separately its adjustment which is applied to both lens arrays. CONSTITUTION:In case of executing a variable power copy, an optical path of a variable power use lens array 18 is opened due to a shutter 27, and when the tip of an original 20 reaches an exposure start point 22 by a forward motion of an original platen 21, an image is projected successively from on a photosensitive body 1 which is positioned at an exposure position. On the other hand, in case of executing an unmagnification copy, the shutter 27 is moved in the right direction, a slit 28 is opposed to an optical path of an unmagnification use lens array 19, and the optical path of the lens array 18 is light-shielded. Accordingly, the original 20 on the platen 21 passes through an exposure start point 23, therefore, an image of that time is projected onto the photosensitive body 1 being in an exposure position 30. In such a case, an illuminating device 25 for illuminating the original 20 is placed between each lens array 18, 19, therefore, the exposure start point 22 or 23 can be illuminated separately.
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