Method of changing the density of image on simple color proof us

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Readily visible image formation

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430257, 430260, 430396, 430952, G03C 500

Patent

active

048897949

ABSTRACT:
A method of obtaining a color proof in which color-separated images are successively exposed onto colored light-sensitive layers. The layers are all transferred to a printing paper. The exposures are performed through a mask having dots of predetermined density and diameter, depending on the type of printing paper. If the color-separated images are positive, the dots are transparent on a dark background. If the color-separated images are negative, the dots are dark on a transparent background and additional exposures are made without the mask.

REFERENCES:
patent: 3615441 (1971-10-01), Deneau
patent: 4262071 (1981-04-01), Larson
patent: 4339525 (1982-07-01), Bratt et al.
patent: 4482625 (1984-11-01), Namiki et al.
patent: 4537470 (1985-08-01), Schoppmeyer
patent: 4571373 (1986-02-01), Musser et al.

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