DRY COLOR PRINTING PROCESS BY DIFFUSION ASSISTED PHOTOPOLYMERIZATION AND PHOTOGRAFTING

摘要

Dry color printing process, in which a multilayer assembly that comprises a plurality of photosensitive compounds, each excitable by irradiation of given wavelength range; a plurality of monomer-dye components, each of which can be activated by one of the photosensitive compounds once this latter has been excited, and a polymer matrix, adapted to bind by photografting the photosensitive compounds once these latter have been activated, is provided. A digital file defining the color image to be printed and a plurality of light sources having different wavelengths, by each of which one of the photosensitive compounds is excitable are also provided. The multilayer assembly is irradiated with the light produced by the sources, according to a program determined by the digital file, whereby each of the photosensitive compounds activates the corresponding monomer-dye component to define an image.