Photothermographic materials with UV absorbing support

A black-and-white aqueous-based, symmetric photothermographic material that comprises a transparent support having on both sides thereof:

• a) one or more thermally developable imaging layers each comprising a hydrophilic binder that is gelatin, a gelatin derivative, a poly(vinyl alcohol), or a cellulosic material, or is a water-dispersible polymeric latex, and in reactive association,
• a preformed photosensitive silver bromide, silver iodobromide, or a mixture thereof, provided predominantly as tabular grains, said tabular grains being spectrally sensitized to a predetermined wavelength within the predetermined range of wavelengths of from about 360 to about 420 nm,
• a non-photosensitive source of reducible silver ions that includes one or more organic silver salts at least one of which is a silver salt of benzotriazole,
• an ascorbic acid reducing agent for said non-photosensitive source of reducible silver ions, and
• b) optionally, an outermost protective layer disposed over said one or more thermally developable imaging layers,
• said material comprising in said support a crossover control composition in an amount sufficient to reduced crossover to less 25%, and
• said crossover control composition comprising a hydroxyphenylbenzotriazole represented by the following Structure (I):
• wherein m is 1 or 2,
• provided that when m is 1, R1 and R2 are independently alkyl, aryl, alkoxy, aryloxy, or alkenyl groups wherein at least one of the R1 and R2 groups has at least 4 carbon atoms, and R3 and R4 are independently hydrogen or a halo, alky, aryl, alkoxy, aryloxy, or alkenyl group, and
• when m is 2, R1 is a divalent linking group L, and R2, R3, and R4 are as defined when m is 1.

A black-and-white photothermographic material comprising a support having on a frontside thereof,

• a) one or more frontside thermally developable imaging layers comprising a hydrophilic polymer binder or water-dispersible polymer latex binder, and in reactive association, a photosensitive silver halide that is spectrally sensitized to a predetermined wavelength within a predetermined range of wavelengths, a non-photosensitive source of reducible silver ions that includes a silver salt of a heterocyclic compound containing an imino group, an ascorbic acid or reductone reducing agent for said non-photosensitive source reducible silver ions, and
• said material comprising on the backside of said support, one or more backside thermally developable imaging layers comprising a hydrophilic polymer binder or a water-dispersible polymer latex binder, and in reactive association, a photosensitive silver halide that is spectrally sensitized to a predetermined wavelength within a predetermined range of wavelengths, a non-photosensitive source of reducible silver ions that includes a silver salt of a heterocyclic compound containing an imino group, and an ascorbic acid or reductone reducing agent for said non-photosensitive source reducible silver ions, and
• b) optionally, an outermost protective layer disposed over said one or more thermally developable imaging layers on either or both sides of said support, and
• wherein said one or more thermally developable imaging layers, or said one or more protective layers if present, on both sides of said support have the same or different composition, and
• said material further comprising in said support a crossover control composition that absorbs radiation at said predetermined wavelength, said crossover control composition comprising a hydroxyphenylbenzotriazole, hydroxyphenyltriazine, dibenzoylmethane, or mixture thereof.