Silver halide photographic emulsions

Claim 1

A silver halide photographic emulsion containing in combination at least one dye represented by the following formulae (I) and (II) and at least one dye represented by the following formulae (III) and (IV): ##STR14## wherein m 1 is an integer having a value of 1 to 8, R 1 , R 2 and R 3 , which may be identical with or different from one another, independently represent a --CH 2 (CF 2 ) l .sbsb.1 H group or a substituted or unsubstituted alkyl group, providing that at least one of R 1 , R 2 and R 3 possesses an acid substituent (such as, for example, a sulfonic acid group or carboxylic acid group), l 1 , which may be equal to or not equal to m 1 , is an integer having a value of 1 to 8, V 1 , V 2 , V 3 and V 4 , which may be identical with or different from one another, independently represent a hydrogen atom, a halogen atom, a substituted alkyl group, an unsubstituted alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, a cyano group, or a trifluoromethyl group, X 1 represents an anion, and n 1 is 1 or 2, providing that n 1 where the dye forms an intramolecular salt; ##STR15## wherein l 2 is 0 or an integer having a value of 1 to 8, m 2 is 0 or an integer having a value of 1 to 8, providing that the total value of l 2 and m 2 is an integer greater than 0, R 4 , R 5 , and R 6 , which may be identical with or different from one another, independently represent a --(CH 2 ) j (CF 2 ) k F group or a substituted or unsubstituted alkyl group, providing that at least one of R 4 , R 5 and R 6 represents an alkyl group containing an acid substituent (such as, for example, a sulfonic acid group or carboxylic acid group), j is 0 or an integer having a value of 1 to 8, k is 0 or an integer having a value of 1 to 8, providing that the total value of j and k is an integer greater than 0, V 5 , V 6 , V 7 and V 8 , which may be identical with or different from one another, independently represent a hydrogen atom, a halogen atom, a substituted alkyl group, an unsubstituted alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, a cyano group or a trifluoromethyl group, X 2 represents an anion, and n 2 is 1 or 2, providing that n 2 is 1 where the dye forms an intramolecular salt; ##STR16## wherein Y 1 represents an oxygen atom, a sulfur atom, a selenium atom, or N--R 10 , Z 1 and Z 2 , which may be identical with or different from each other, independently represent an atomic group necessary for the formation of an unsubstituted or substituted benzene ring or naphthalene ring, R 7 , R 8 and R 10 independently represent an unsubstituted or substituted alkyl group, providing that at least one of R 7 , R 8 and R 10 possesses an acid substituent, R 9 represents a hydrogen atom, an alkyl group, or an aralkyl group, X 3 represents an anion, and n 3 is 1 or 2, providing than n 3 is 1 where the dye forms an intramolecular salt; ##STR17## wherein Y 2 represents a sulfur atom, a selenium atom, or N--R 14 , Z 3 and Z 4 , which may be identical with or different from each other, independently represent an atomic group necessary for the formation of a unsubstituted or substituted benzene ring or naphthalene ring, R 11 , R 12 , R 13 and R 14 independently represent an unsubstituted or substituted alkyl group, providing that at least one of R 11 , R 12 , R 13 and R 14 possesses an acid substituent, X 4 represents an anion, and n 4 is 1 or 2, providing that n 4 is 1 where the dye forms an intramolecular salt.