Thermally developable materials containing backside conductive layers

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 first layer comprising a film-forming polymer, and
• b) interposed between said support and said first layer and directly adhering said first 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 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 film-forming polymer of said first layer and said second polymer of said backside conductive layer are the same or different polyvinyl acetal resins, polyester resins, cellulosic polymers, maleic anhydride-ester copolymers, or vinyl polymers.

A black-and-white photothermographic material that comprises a transparent polymeric support having on one side thereof one or more thermally developable imaging layers comprising predominantly one or more hydrophobic binders including at least polyvinyl butyral, and in reactive association, a preformed photosensitive silver bromide or silver iodobromide present as tabular and/or cubic grains, a non-photosensitive source of reducible silver ions that includes one or more silver aliphatic carboxylates at least one of which is silver behenate, a reducing agent composition for said non-photosensitive source reducible silver ions comprising a hindered phenol or mixture thereof, and a protective layer disposed over said one or more thermally developable imaging layers, and

• having disposed on the backside of said support:
• a) a backside protective layer comprising a film-forming polymer that is cellulose acetate butyrate, and
• b) interposed between said support and said backside protective layer and directly adhering said backside protective 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 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 first polymer of said backside conductive layer is a polyester and said second polymer of said backside conductive layer is cellulose acetate butyrate, and
• said non-acicular metal antimonate particles are composed of ZnSb2O6 and comprise from about 40 to about 55% by weight of the backside conductive layer in an amount of from about 0.05 to about 2 g/m2.

A black-and-white thermographic material that comprises a transparent polymeric support having on one side thereof one or more thermally developable imaging layers comprising predominantly one or more hydrophobic binders including at least polyvinyl butyral, and in reactive association, a non-photosensitive source of reducible silver ions that includes one or more silver aliphatic carboxylates at least one of which is silver behenate, a reducing agent composition for said non-photosensitive source reducible silver ions comprising an aromatic di- and tri-hydroxy compound having at least two hydroxy groups in ortho- or para-relationship on the same aromatic nucleus or mixture thereof, and a protective layer disposed over said one or more thermally developable imaging layers, and

• having disposed on the backside of said support:
• a) a backside protective layer comprising a film-forming polymer that is cellulosic acetate butyrate, and
• b) interposed between said support and said backside protective layer and directly adhering said backside protective 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 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 first polymer of said backside conductive layer is a polyester and said second polymer of said backside conductive layer is cellulosic acetate butyrate, and
• said non-acicular metal antimonate particles are composed of ZnSb2O6 and comprise from about 40 to about 55% by weight of the backside conductive layer and are present in the conductive layer in an amount of from about 0.05 to about 2 g/m2.

A thermally developable 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 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 first layer comprising a film-forming polymer,
• b) a second layer directly adhered to said support, comprising a mixture of two or more polymers that includes a first polymer serving to promote adhesion of said second layer directly to said support, and a second polymer that is different than and forms a single phase mixture with said first polymer, and
• c) interposed between said first layer and said second layer, a non-imaging backside conductive layer comprising non-acicular metal antimonate particles in a polymer serving to promote adhesion of said backside conductive layer directly to said first and second layers,
• wherein said film-forming polymer of said first layer, said polymer of said conductive layer, and said second polymer of said second layer are the same or different polyvinyl acetal resins, polyester resins, cellulosic polymers, maleic anhydride-ester copolymers, or vinyl polymers.

A thermally developable 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 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 first layer comprising a film-forming polymer,
• b) a second layer directly adhered to said support, comprising a first polymer, and
• c) interposed between said first layer and said second layer, a non-imaging backside conductive layer comprising non-acicular metal antimonate particles in a mixture of two or more polymers that includes a first polymer that serves to promote adhesion to said second layer, and a second polymer that is different than and forms a single phase mixture with said first polymer, and serves to promote adhesion to said first layer,
• wherein said film-forming polymer of said first layer and one of said two or more polymers of said backside conductive layer are the same or different polyvinyl acetal resins, polyester resins, cellulosic polymers, maleic anhydride-ester copolymers, or vinyl polymers.