Photothermographic recording elements

A photothermographic recording element comprising a transparent support, a binder, a non-photosensitive organic silver salt, a photosensitive silver halide, and a reducing agent, characterized in that

• at least one constituent layer on said transparent support is a photosensitive layer containing a photosensitive silver halide and a binder wherein at least one layer of the photosensitive layer comprises at least one component selected from the group consisting of (a) polymeric microparticulates containing a dyestuff selected from the group consisting of pyrazoloazole, anthraquinone, azo, azomethine, oxonol, carbocyanine, styryl, triphenylmethane, indoaniline, indophenol, and squarylium dyestuffs, (b) microcapsules containing said dyestuff, and (c) an organic or inorganic pigment selected from the group consisting of azo pigments, phthalocyanine pigments, indanthrone pigments, indigo pigments, guinacridone pigments and dioxazine pigments;
• and wherein at least one of said constituent layers comprises a polyhalogenated compound of formula (I):
• wherein, in formula (I), Q is an alkyl, aryl or heterocyclic group, each of X1 and X2 is a halogen atom, Z is a hydrogen atom or electron attractive group, Y is —C(═O)—, —SO— or —SO2—, and n is equal to 0 or 1.