Method and apparatus for screens of half ton of negative or. Half tone positive

摘要

Apparatus for simultaneous screening of sets of color- separated half- tone negatives, two or more registering images of the negatives can be projected simultaneously on photographic film by adjusting the configuration of the film support to counteract the distortion caused by the reproduction lens. For this purpose, a film support plate is devised, the surface of which can be locally deformed accordingly by adjustment of screw members.