Patent ID: 6566044
Filing Date: 2003-05-20
Classification: C09B,G03C,Y10S

Abstract:
A silver halide photographic material comprising at least one silver halide photographic emulsion layer provided on a support, wherein said emulsion layer contains at least one sensitizing methine dye compound represented by formula (I) and at least one sensitizing methine dye compound represented by formula (II): wherein Y represents an atomic group necessary to form a heterocyclic ring or an atomic group necessary to form a benzene ring condensed with a heterocyclic ring, which may further be condensed with another carbocyclic ring or another heterocyclic ring or may be substituted; Z1 and Z2 each represents an atomic group or a single bond necessary to form a nitrogen-containing heterocyclic ring which may be further condensed with another carbocyclic ring or heterocyclic ring or may be substituted; R represents an alkyl group, an aryl group or a heterocyclic ring; D represents a group necessary to form said sensitizing methine dye; L1 and L2 each represents a methine group; p is an integer of 0 or 1; M represents a counter ion and m is an integer of 0, or 1 or more necessary to neutralize the charge of the molecule: wherein Z31 and Z32 each represents an atomic group necessary to form a nitrogen-containing heterocyclic ring which may be condensed with an aromatic or non-aromatic carbocyclic ring and may be substituted, provided that the atomic group is not condensed with an aromatic or non-aromatic heterocyclic ring; R31 and R32 each represents an alkyl group, an aryl group or a heterocyclic ring; L31, L32, L33, L34, L35, L36 and L37 each represents a methine group; p31 and p32 each represents an integer of 0 or 1; n3 represents an integer of 0, 1, 2, 3 or 4; M3 represents a counter ion and m3 is an integer of 0 or 1 or more necessary to neutralize the charge of the molecule.