Patent ID: 7582403

Claim:
A multilayer thermal imaging donor comprising: a base film, a metal transfer layer, and a LTHC layer interposed between said base film and said metal transfer layer; wherein said metal transfer layer has thickness of about 0.2 to about 3 microns and comprises a metal composition (A) comprising about 65 to about 95 wt % of a metal powder selected from the group consisting of: Ag, Cu and alloys thereof; comprising a plurality of metal particles characterized by an average longest dimension of about 5 nm to about 1500; and about 5 to about 35 wt % of a dispersant comprising one or more resins selected from the group consisting of: conducting polymers selected from the group consisting of: polyaniline, polythiophene, polypyrrole, polyheteroaromatic vinylenes, and their derivatives; and nonconducting polymers selected from the group consisting of: acrylic and styrenic-acrylic latexes and solution-based acrylic and styrenic-acrylic (co)polymers; and combinations thereof; copolymers of ethylene with one or more monomers selected from the group consisting of: (meth)acrylate(s), vinyl acetate, carbon monoxide and (meth)acrylic acid; and polyvinylacetate and its copolymers further comprising one or more additional transfer layer(s) wherein the one or more additional transfer layer(s) comprises a conducting polymer selected from the group consisting of: polyaniline, polythiophene, polypyrrole, polyheteroaromatic vinylenes, and their derivatives, wherein the one or more additional transfer layer(s) comprises a conducting layer selected from the group consisting of: polyaniline and derivatives thereof; and further comprises 0.1 to 12 wt % single wall carbon nanotubes and an organic protic acid having 1 to 30 carbons, said acid present at a molar equivalent amount of about 25% to about 100% of the nitrogen atoms in the polyaniline backbone.