Spectrally sensitized silver halide photographic emulsion

Claim 2

IN A SILVER HALIDE PHOTOGRAPHIC EMULSION SPECTRALLY SENITIZED TO HAVE ITS MAXIMUM SENSITIVITY IN A WAVE LENGTH REGION OF AT LEAST FROM 580 NM TO 640 NM, THE IMPROVEMENT WHICH COMPRISES SAID SILVER HALIDE PHOTOGRAPHIC EMULSION CONTAINING A SUPER SENSITIZING AMOUNT OF A COMBINATION OF AT LEAST ONE CARBOCYANINE DYE REPRESENTED BY THE GENERAL FORMULA (I):

Claim 3

The silver halide photographic emulsion of claim 1, in which said heterocyclic ring formed by Z1 is a Beta -naphthoxazole ring, the heterocyclic ring formed by Z2 is a benzothiazole ring or a benzoselenazole ring in which the 5-position is either unsubstituted or substituted with a chlorine atom, a trifluoromethyl group, an alkoxycarbonyl group, a methyl group, a methoxy group or a phenyl group; and A1 is an ethyl group.

Claim 4

The silver halide emulsion of claim 1, in which said heterocyclic ring formed by Z1 is a Beta -naphthoimidazole ring; said heterocyclic ring formed by Z2 is a benzothiazole ring or a benzoselenazole ring in which the 5-position is either unsubstituted or substituted with a chlorine atom, a trifluoromethyl group, an alkoxycarbonyl group, a methyl group, a methoxy group or a phenyl group; and A1 is a hydrogen atom.

Claim 5

The silver halide photographic emulsion of claim 1, in which A2 is a hydrogen atom or an ethyl group; and R3 and R4 are each a methyl group, an ethyl group, a propyl group, an allyl group, a carboxyalkyl group or a sulfoalkyl group.

Claim 6

The silver halide photographic emulsion of claim 1, in which A3 is a hydrogen atom, a methyl group, an ethyl group, a propyl group or a phenyl group; and R5 and R6 are each a methyl group, an ethyl group, a propyl group, an allyl group, a carboxyalkyl group or a sulfoalkyl group.

Claim 7

A color photosensitive material containing in combination a sensitizing amount of at least one carbocyanine dye represented by the General Formula (I) of claim 1 and at least one dye selected from the group consisting of a dye represented by the General Formula (II) of claim 1 and a dye represented by the General Formula (III) of claim 1.

Claim 8

The silver halide photographic emulsion of claim 1, wherein A1, A2, and A3, each represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group; and R1, R2, R3, R4, R5 and R6 each represents, an alkyl group, an allyl group, a hydroxyalkyl group, a carboxyalkyl group, an alkoxyalkyl group, a sulfo-containing alkyl group, a haloalkyl group, an aminoalkyl group, a cyanoalkyl group, or a sulfoaralkyl group.

Claim 9

The silver halide photographic emulsion of claim 7, wherein A1, A2 and A3 each represents a hydrogen atom, a methyl group, an ethyl group, a propyl group, a phenyl group, or a phenethyl group; and R1, R2, R3, R4, R5 and R6 each represents, an alkyl group, an allyl group, a hydroxyalkyl group, a carboxyalkyl group, an alkoxyalkyl group, a sulfo-containing alkyl group, a haloalkyl group, an aminoalkyl group, a cyanoalkyl group, or a sulfoaralkyl group.

Claim 10

The silver halide photographic emulsion of claim 1, wherein said rings for Z2 are substituted rings, said substituents being halogen atoms, alkyl groups, trifluoromethyl groups, alkoxy groups, alkylcarbonyl groups, carboxy groups, alkoxycarbonyl groups, acyl groups, aryl groups, cyano groups, hydroxy groups, alcoholate groups, or amino groups.

Claim 11

The silver halide photographic emulsion of claim 1, wherein the ring formed by Z2 is benzothiazole, 5-chlorobenzothiazole, 5-bromobenzothiazole, 5-fluorobenzothiazole, 5-methylbenzothiazole, 5-methoxybenzothiazole, 5-methylcarbonylbenzothiazole, 5-carboxybenzothiazole, 5-methoxycarbonylbenzothiazole, 5-phenylbenzothiazole, 5-cyanobenzothiazole, 5-trifluoromethylbenzothiazole, 5-hydroxybenzothiazole, 5-aminobenzothiazole, 5,6-dichlorobenzothiazole, 5-methyl-6-methoxybenzothiazole, 5,6-dimethylbenzothiazole, 5,6-dimethoxybenzothiazole, 5,6-diethoxybenzothiazole, benzoselenazole, 5-chlorobenzoselenazole, 5-bromobenzoselenazole, 5-methylbenzoselenazole, or 5-methoxybenzoselenazole.

Claim 12

The silver halide photographic emulsion of claim 1 wherein said rings for Z3, Z4, Z5 and Z6 are substituted rings, said substituents being halogen atoms, alkyl groups, trifluoromethly groups, alkoxy groups, alkylcarbonyl groups, carboxy groups, alkoxycarbonyl groups, acyl groups, aryl groups, cyano groups, hydroxy groups, or amino groups.

Claim 13

The silver halide photographic emulsion of claim 1, wherein the ring formed by Z3 is benzothiazole, 5-chlorobenzothiazole, 5-bromobenzothiazole, 5-methylbenzothiazole, 5-methoxybenzothiazole, 5,6-dimethylbenzothiazole, 5,6-dimethoxybenzothiazole, 5-ethoxybenzothiazole, 5-methyl-6-methoxybenzothiazole, 5-methyl-6-ethoxybenzothiazole, 5-ethoxy-6-methylbenzothiazole, 5-hydroxy-6-methylbenzothiazole, 5-phenylbenzothiazole, 5-hydroxybenzothiazole, 5-cyanobenzothiazole, benzoselenazole, 5-chlorobenzoselenazole, 5-methylbenzoselenazole, 5-methoxybenzoselenazole, 5,6-dimethylbenzoselenazole, 5,6-dimethoxybenzoselenazole, 5-phenylbenzoselenazole, or Beta -naphthobenzothiazole, the ring formed by Z4 is benzoxazole, 5-methylbenzoxazole, 5-methoxybenzoxazole, 5,6-dimethylbenzoxazole, 5,6-dimethoxybenzoxazole, 5-phenylbenzoxazole, benzimidazole, 5-chlorobenzimidazole, 5,6-dichlorobenzimidazole, or 5-trifluoromethylbenzimidazole, and the ring formed by Z5 and Z6 each is benzothiazole, 5-chlorobenzothiazole, 5-bromobenzothiazole, 5-methylbenzothiazole, 5-methoxybenzothiazole, 5-acetylbenzothiazole, 5-methoxycarbonylbenzothiazole, 5-ethoxycarbonylbenzothiazole, 5-phenylbenzothiazole, 5-cyanobenzothiazole, 5-hydroxybenzothiazole, benzoselenazole, 5-chlorobenzoselenazole, 5-methylbenzoselenazole, 5-methoxybenzoselenazole, 5-phenylbenzoselenazoLe, Beta -naphthothiazole, or Beta -naphthoselenazole.

Claim 14

The silver halide photographic emulsion of claim 1, wherein the silver halide of said emulsion is silver chloride, silver bromide, silver iodide or mixtures thereof.

Claim 15

The silver halide photographic emulsion of claim 13, wherein said silver halide contains at least 90 mol% silver bromide and less than 7 mol% silver iodide.

Claim 16

The silver halide photographic emulsion of claim 14, wherein the average particle diameter of the particles of said silver halide ranges from 0.04 Mu to 2 Mu .

Claim 17

The silver halide photographic emulsion of claim 1, wherein each of said sensitizing dyes is present in said emulsion at a level of 5 X 10 3 mol to 1 X 10 6 mole per mol of silver.

Claim 18

The silver halide photographic emulsion of claim 1, wherein the molar ratio of said dyes of the General Formula (II) or (III) to said dye of the General Formula (I) ranges from 100:1 to 1:5.

Claim 19

The silver halide photographic emulsion of claim 1, wherein said sensitizing dye of the General Formula (I) is

Claim 20

A light-sensitive silver halide photographic element comprising a support and having thereon the silver halide photographic emulsion of claim 1.

Claim 21

The photographic element of claim 19, wherein A1, A2, and A3, each represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group; and R1, R2, R3, R4, R5 and R6 each represents, an alkyl group, an allyl group, a hydroxyalkyl group, a carboxyalkyl group, an alkoxyalkyl group, a sulfo-containing alkyl group, a haloalkyl group, ann aminoalkyl group, a cyanoalkyl group, or a sulfoaralkyl group.

Claim 22

The photographic element of claim 20, wherein A1, A2 and A3 each represents a hydrogen atom, a methyl group, an ethyl group, an ethyl group, a propyl group, a phenyl group, or a phenethyl group; and R1, R2, R3, R4, R5 and R6 each represents, an alkyl group, an allyl group, a hydroxyalkyl group, a carboxyalkyl group, an alkoxyalkyl group, a sulfo-containing alkyl group, a haloalkyl group, an aminoalkyl group, a cyanoalkyl group, or a sulfoaralkyl group.

Claim 23

The photographic element of claim 19, wherein said rings for Z2 are substituted rings, said substituents being halogen atoms, alkyl groups, trifluoromethyl groups, alkoxy groups, alkylcarbonyl groups, carboxy groups, alkoxycarbonyl groups, acyl groups, aryl groups, cyano groups, hydroxy groups, alcoholate groups, or amino groups.

Claim 24

The photographic element of claim 19, wherein the ring formed by Z2 is benzothiazole, 5-chlorobenzothiazole, 5-bromobenzothiazole, 5-fluorobenzothiazole, 5-methylbenzothiazole, 5-methoxybenzothiazole, 5-methylcarbonylbenzothiazole, 5-carboxybenzothiazole, 5-methoxycarbonylbenzothiazole, 5-phenylbenzothiazole, 5-cyanobenzothiazole, 5-trifluoromethylbenzothiazole, 5-hydroxybenzothiazole, 5-aminobenzothiazole, 5,6-dichlorobenzothiazole, 5-methyl-6-methoxybenzothiazole, 5,6-dimethylbenzothiazole, 5,6-dimethoxybenzothiazole, 5,6-diethoxybenzothiazole, benzoselenazole, 5-chlorobenzoselenazole, 5-bromobenzoselenazole, 5-methylbenzoselenazole, or 5-methoxybenzoselenazole.