Patent ID: 6733959
Filing Date: 2004-05-11
Classification: G03C,Y10S

Abstract:
An aqueous-based photothermographic material that is sensitive to infrared radiation and comprises a support having thereon one or more aqueous-based imaging layers comprising a hydrophilic binder and in reactive association:a. a photocatalyst, b. a non-photosensitive source of reducible silver ions that is present as an aqueous colloidal dispersion, c. a reducing composition for said reducible silver ions, and d. a tellurium-containing chemical sensitizing compound represented by the following Structure I, II, or III: wherein X represents the same or different COR, CSR, CNRRa, CR, PRRa, or P(OR)2 groups, R and Ra are independently alkyl, alkenyl, or aryl groups, L is a ligand derived from a neutral Lewis base, X1 and X2 independently represent a halo, OCN, SCN, S2CNRRa, S2COR, S2CSR S2P(OR)2, S2PRRa, SeCN, TeCN, CN, SR, OR, alkyl, aryl, N3, or O2CR group, Râ€² is an alkyl or aryl group, p is 2 or 4, 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.