Patent ID: 6656665
Filing Date: 2003-12-02
Classification: C03C,G03F,Y10T

Abstract:
A substrate produced by:a) depositing on at least part of a face of a substrate a first layer of a photosensitive resin comprising (i) a sensitizing agent and (ii) at least one photosensitive compound comprising a polymer with an average degree of cross-linking dÂ° such that it is able to absorb solid particles; b) exposing an area of said first layer to light to increase the average degree of cross-linking dÂ° of said polymer, wherein the absorption capacity of the polymer is modulated as a function of light exposure; c) after exposure, depositing on said first layer a second layer of a composition comprising mineral particles, wherein at least some of the mineral particles are absorbed by the first layer; and d) subjecting said substrate to at least one heat treatment cycle, to fix said mineral particles, wherein said substrate comprises a pattern having a shading or gradation of color intensity.