| 摘要 |
PURPOSE:To advance photosensitive paper at a speed twice as fast as that of an exposure system and to prevent paper from shifting in position and floating by moving forth two rollers which clamp the photosensitive paper at the same speed with the exposure system, and moving forth the photosensitive paper at the same speed. CONSTITUTION:A scanning box 31 equipped with an optical exposure system 39, etc., is provided slidably under a platen 2 and two roller devices 49 and 50 for clamping the photosensitive paper 7 are fitted thereto. Then, pinions 57 and 58 fitted to main rollers 51 and 52 engage a rack parallel to the platen 2. Therefore, when the scanning box 31 is driven through a wire 33, both rollers devices 49 and 50 are also moved at the same speed with the exposure system and the photosensitive paper 7 is fed out at the same speed. Consequently, the photosensitive paper is moved forth at a speed double as fast as that of the exposure system and the photosensitive paper 7 is pressed by the rollers, so the paper is prevented from shifting in position and floating.
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