| 摘要 |
A contact printing apparatus for accurately and precisely maintaining in registry a master image-bearing transparent film and a light-sensitive duplicate. In one embodiment, the master and duplicate comprise two film strips being initially wound on separate supply reels and transported through an exposure zone to take-up reels by a drive mechanism. A pair of high voltage rollers are disposed upstream of the exposure zone in contact with the moving master and duplicate so as to electrostatically charge them causing strong attraction and adherence therebetween. A discharge device is provided downstream of the exposure zone so as to prevent any scintillation when the master and duplicate are separated. |
