Patent ID: 6699647
Filing Date: 2004-03-02
Classification: G03C,Y10S

Abstract:
A photothermographic material comprising a support having thereon one or more layers comprising a binder and in reactive association:a. a preformed photosensitive silver halide, b. a non-photosensitive source of reducible silver ions, c. a reducing composition for said reducible silver ions, and d. a tellurium chemical sensitizer represented by the following Structure I or II: Te(L)m(X1)nâ€ƒâ€ƒ(I) Pd(X2)2[Te(Râ€²)2]2â€ƒâ€ƒ(II) wherein X1 and X2 independently represent halo, OCN, SCN, S(C&boxH;S)N(Ra)(Rb), S(C&boxH;S)ORa, S(C&boxH;S)SRa, S(P&boxH;S)(ORa)(ORb), S(P&boxH;S)(Ra)(Rb), SeCN, TeCN, CN, SRa, ORa, N3, alkyl, aryl, or O(C&boxH;O)Ra groups, Ra and Rb are an alkyl, alkenyl, cycloalkyl, heterocycyl, or aryl group, or Ra and Rb taken together can form a 5-, 6- or 7-membered heterocyclic ring, L is a ligand derived from a neutral Lewis base, Râ€² is an alkyl or aryl group, m is 0, 1, 2, or 4, and n is 2 or 4 provided that when m is 0 or 2, n is 2 or 4, and when m is 1 or 4, n is 2, and further provided that multiple X1, X2, L, Ra, Rb, or Râ€² groups in the molecule can be the same or different.