Process for the production of half-tone and line work multi-color photographic images

Abstract

Abstract Multi-colored half-tone and line-work positive photographic images are produced from a multi-colored original. The photographic element used comprises a support carrying a lightsensitive layer spectrally sensitized to one of the three primary color regions of the visible spectrum and containing a photopolymerizable monomer and a photopolymerization initator therefor, dispersed in a polymeric binder. The images are produced by a process comprising the steps of: A. exposing the light-sensitive layer to actinic light through the multi-colored original, B. heating and pressing together the exposed light-sensitive layer on a receptor surface and stripping away the temporary support together with the photopolymerized parts of the lightsensitive layer, so that the unpolymerized parts are transferred to the receptor surface in the form of a positive color separation image, C. exposing this color separation image to actinic light to polymerize the photopolymerizable monomer, D. repeating the above steps with two other elements comprising a temporary support carrying a light-sensitive layer spectrally sensitized to one of the two other primary color regions of the visible spectrum and also containing a photopolymerizable monomer and an initiator dispersed in a polymeric binder. In each step (B) the exposed light-sensitive layer is heated and pressed on the receptor surface in superposition on the positive color separation image(s) already present and in register therewith.

Inventors

• 👤 U Laridon

Bibliographic Details