Process of double exposing a photo-polymerizable stratum laminated between two supports, said double exposure determining the support which retains the positive image

Claim 1

A PROCESS FOR IMAGE REPRODUCTION WHICH COMPRISES (A) DOUBLE EXPOSING A PHOTOPOLYMERIZABLE LAMINATE TO ACTINIC RADIATION BY AN IMAGEWISE EXPOSURE THROUGH ONE SUPPORT OF SAID LAMINATE AND AN OVER-ALL EXPOSURE ON THE OPPOSITE SUPPORT OF SAID LAMINATE, SAID DOUBLE EXPOSURE BEING ACCOMPLISHED IN EITHER SEQUENCE OF EXPOSURE, AND (B) SEPARATING SAID SUPPORTS OF SAID LAMINATE TO OBTAIN A POSITIVE IMAGE ON ONE SUPPORT AND A NEGATIVE IMAGE ON THE OTHER SUPPORT, SAID LAMINATE COMPRISES A PHOTOPOLYMERIZABLE COMPOSITION LAMINATED BETWEEN TWO ACTINIC RADIATION PERMEABLE SUPPORTS AT A TEMPERATURE OF ABOUT 50*C. TO 150* C. AND MOLECULAR WEIGHT OF AT LEAST 295 RATED MONOMER WITH A MOLECULAR WEIGHT OF AT LEAST 295 AND A COMPATIBLE POLYMERIC BINDER PRESENT IN A RATIO OF ABOUT 10 TO 70 PARTS PER 100 PARTS OF BINDER-MONOMER COMPOSITION.