Patent ID: 6558787
Filing Date: 2003-05-06
Classification: B41M,H05K,Y10T

Abstract:
A positive working precursor which comprises:A. a substrate; and B. a thermally sensitive composite layer structure having an inner surface contiguous to the substrate and an outer surface, the composite layer structure comprising: (a) a first layer having the inner surface, the first layer comprising a first polymeric material and a photothermal conversion material, wherein the first polymeric material is soluble or dispersible in an aqueous solution and the photothermal conversion material comprises an infrared absorbing compound, wherein the substrate comprises a conductive surface contiguous with the inner surface of the first layer, wherein the conductive surface is of copper or a copper-rich alloy; and (b) a second layer having the outer surface, the second layer comprising a second polymeric material, wherein the second layer is insoluble in the aqueous solution.