Production of reverse reading positive images of a straight...

Details Production of reverse reading positive images of a straight... Production of reverse reading positive images of a straight...

G - Physics

03

C

96/247, 96/258,

G03C 5/08 (2006.01) G03C 1/825 (2006.01) G03C 8/06 (2006.01) G03F 1/12 (2006.01)

Patent

CA 1157700

Abstract Process for the production of a reverse reading positive line and/or halftone image suited for use in the production of a lithographic offset printing plate, said process comprising steps of : (1) photo-exposure of a photographic negative working silver halide emulsion material, (2) bringing the emulsion layer side of the photographic material in contact with an image-receiving material to form a visible silver image thereon, (3) separating the photographic material from the image- receiving material, said photographic material com- prising a negative working silver halide emulsion layer on a transparent film support and an antihala- tion layer either between the emulsion layer and the film support or at he side of said support opposite to that carrying the emulsion layer and the exposure of the silver halide emulsion layer occurring through the support and the antihalation layer with a camera having no reversing mirror or prism.

371509

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