Patent ID: 6413711
Filing Date: 2002-07-02
Classification: G03C,Y10S

Abstract:
A photothermographic material comprising a support and a photosensitive layer containing an organic silver salt, a photosensitive silver halide and a binder, wherein the photosensitive layer or the support contains a dye represented by the following formula (1), and the photosensitive silver halide being spectrally sensitized with at least a sensitizing dye represented by the following formulas (2a) through (2d): wherein X represents an oxygen or sulfur atom; R1 and R2 each represent a univalent substituent group; m and n are each 0, 1, 2, 3 or 4;wherein Y1, Y2 and Y11 each represent an oxygen atom, sulfur atom, selenium atom or â€”CH&boxH;CHâ€”; L1 through L9 and L11 through L15 each represent a methine group; R1, R2, R11 and R12 each represents an aliphatic group; R3, R4, R13 and R14 each represent an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group or a heterocyclic ring group; W1, W2, W3, W4, W11, W12, W13, and W14 each represent a hydrogen atom or a substituent group or a non-metallic atom group necessary to form a condensed ring by bonding between W1 and W2, W3 and W4, W11 and W12, or W13 and W14, or a non-metallic atom group necessary to form a 5- or 6-membered condensed ring by bonding between R3 and W1, R3 and W2, R13 and W11, R13 and W12, R4 and W3, R4 and W4, R14 and W13, or R14 and W14; X1 and X11 each represent an ion necessary to compensate for an intramolecular charge; k1 and k11 represent the number necessary to compensate for an intramolecular charge; m1 is 0 or 1; n1, n2, n11 and n12 are each 0, 1 or 2, provided that n1 and n2, or n11 and n12 are 0 at the same time.