Patent ID: 7144689

Claim:
A photothermographic material that comprises a support having on one side thereof, one or more thermally developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing agent composition for said non-photosensitive source reducible silver ions, and having disposed on the backside of said support: a) a backside overcoat layer comprising a film-forming polymer, and b) interposed between said support and said backside overcoat layer and directly adhering said backside overcoat layer to said support, a non-imaging backside conductive layer comprising non-acicular metal antimonate particles in a mixture of two or more polymers that include a first polymer serving to promote adhesion of said non-imaging backside conductive layer directly to said support, and a second polymer that is different than and forms a single phase mixture with said first polymer, wherein said non-acicular metal antimonate particles comprise greater than 40 and up to 85% by dry weight of said non-imaging backside conductive layer, are present at a coverage of from about 0.06 to about 0.2 g/m 2 , wherein said film-forming polymer of said backside overcoat layer and said second polymer of said non-imaging backside conductive layer are the same or different polyvinyl acetal resins, polyester resins, cellulosic polymers, maleic anhydride-ester copolymers, or vinyl polymers, and wherein said backside overcoat layer has a dry thickness of from about 0.8 to about 3 μm and a dry coating weight of from about 0.7 to about 3.5 g/m 2 .