Patent ID: 7371709

Claim:
A thermally developable material that comprises a support having on one side thereof, one or more thermally developable imaging layers comprising a binder, said material also comprising, in reactive association, a non-photosensitive source of reducible silver ions, and a reducing agent composition for said non-photosensitive source of reducible silver ions, and having disposed on the backside of said support, a first non-imaging backside layer comprising at least 0.0004 mol/m 2 of one or more a quaternary ammonium salts having a molecular weight less than 650 and comprising four aliphatic organic groups attached to the quaternary ammonium cation, provided at least one of said organic groups is an aliphatic group having 6 to 20 carbon atoms and at least two of said organic groups are the same or different aliphatic groups having 1 to 5 carbon atoms, and a buried conductive backside layer, said buried conductive backside layer being closer to said support than said first backside layer, and wherein said quaternary ammonium salt is located only in said first backside layer.