Photopolymerizable elements and transfer processes

Claim 1

A PHOTOPOLYMERIZING ELEMENT COMPRISING A SUPPORT BEARING A SOLID UNIFORM PHOTOPOLYMERIZABLE LAYER HAVING A THICKNESS OF 0.00005 TO 0.005 INCH OF A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING: (1) AN ADDITION POLYMERIZABLE NON-GASEOUS, ETHYLENICALLY UNSATURATED COMPOUND CONTAINING AT LEAST ONE TERMINAL ETHYLENIC GROUP HAVING A BOILING POINT ABOVE 100*C. AT NORMAL ATMOSPHERIC PRESSURE AND BEING CAPABLE OF FORMING A HIGH POLYMER BY FREE-RADICAL INITIATIED CHAIN-PROPAGATING ADDITION POLYMERIZATION, (2) A FREE-RADICAL GENERATING ADDITION POLYMERIZATION INITIATOR ACTIVATABLE BY ACTINIC RADIATION, (3) AT LEAST ONE VARIABLY ABSORBING BASIC DYE WHICH EXHIBITS METACHROMASY AND IS PRESENT IN MOLECULARY ASSOCIATED FORM SAID DYE BEING CHARACTERIZED IN THAT IT CAN EXIST IN MOLECULARLY ASSOCIATED AND DISSOCIATED FORM, AND THAT UPON MOLECULAR DISSOCIATION THE EXTINCTION COEFFICIENT INCREASES BY AT LEAST 50% IN ONE OF THE WAVELENGTH REGIONS OF INTENSE DYE ABSORPTION AND WHERE SAID INITIATOR ABSORBS ACTINIC RADIATION, AND FURTHER CHARACTERIZED IN THAT IT ASSUMES A MOLECULARLY ASSOCIATED FORM WHEN DISSOLVED IN A 0.5% BY WEIGHT AQUEOUS SOLUTION OF AGAR-AGAR AND A MOLECULARLY DISSOCIATED FORM WHEN DISSOLVED IN A 3% BY WEIGHT SOLUTION OF SODIUM RIBONUCLEATE, AND (4) A COMPATIBLE VISCOSITY MODIFYING AENT.