| 摘要 |
A method and apparatus for contact printing of continuous strips of film in which the image on the transparent master film is exposed with the light-sensitive negative film while the film strips are in an exposure zone. The film strips are maintained in precise registry through electrostatic devices which produce opposite charges on the two strips, causing them to attract and strongly adhere to one another, thereby preventing relative transverse, lateral and longitudinal movement during exposure. An alternative form of the invention providing for using a master having a substantially smaller width than the duplicate, and printing a plurality of master strips on the duplicate in side-by-side relation.
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