Process for obtaining multicolor images and a multilayer sheet for use therein

Claim 1

A PROCESS OF PRODUCING A MULTILAYER RESIST IMAGE BY PHOTO POLYMERIZATION WHICH COMPRISES COATING A BASE WITH A PLURALITY OF UP TO THREE COMPOSITIONS EACH COMPRISING AN AQUEOUS HYDROPHILIC COLLOIDAL CARRIER, A HYDROPHILIC PHOTO POLYMERIZABLE MONOMER DISPERSED THEREIN, A CATALYTIC AMOUNT OF A LIGHT-SENSITIVE PHOTO POLYMERIZATION CATALYST AND A COLORANT, AND DRYING SAID COATINGS TO FORM A CORRESPONDING PLURALITY OF LAYERS, THE COLORANT IN THE RESPECTIVE COMPOSITIONS AND RESULTANT LAYERS BEING OF DIFFERENT HUE; PHOTOGRAPHICALLY EXPOSING THE RESULTING MATERIAL TO LIGHT UNDER A PATTERN WHILE DIRECTING THE LIGHT FROM SUCH SIDE OF THE MATERIAL AND SO ADJUSTING THE INTENSITY OF THE EXPOSURE AS TO PHOTO POLYMERIZE AT LEAST ONE OF THE LAYERS IN CONTACT WITH THE BASE, AND PHOTOGRAPHICALLY EXPOSING SAID MATERIAL TO LIGHT UNDER ANOTHER PATTERN WHILE DIRECING THE LIGHT FORM SUCH SIDE OF THE BASE AND SO ADJUSTING THE INTENSITY OF THE EXPOSURE AS TO PHOTO POLYMERIZE A DIFFERENT SET OF SAID LAYERS INCLUDING ONE IN CONTACT WITH SAID BASE AND WASHING OUT THE NON-POLYMERIZED PORTIONS OF THE LAYERS.