Photographic silver halide emulsions

Claim 2

IN A PHOTOGRAPHIC SILVER HALIDE EMULSION GREEN-SENSITIZED BY AT LEAST ONE J-BAND SENSTIZATION TYPE TRIMETHINE CYANINE DYE, WHEREIN AT LEAST ONE OF THE NITROGEN CONTAINING HETEROCYCLIC NUCLEI OF SAID DYE HAS, ON THE NITROGEN ATOM THEREOF, A -RCOOH GROUP WHEREIN R IS AN ALKYLENE GROUP, OR A SULFONALKYL GROUP, THE IMPROVEMENT WHEREIN SAID J-BAND SENSITIZATION TYPE DYE IS PRESENT IN A BINDER DISPERSION OF SILVER CLOROBROMIDE CONTAINING A WATER SOLUBLE IODIDE IN A MOLAR RATIO FO 0.005-0.01, BASED UPON SILVER CHLORIDE WHICH IS A COMPONENT OF SAID SILVER CHLOROBROMIDE.

Claim 3

A photographic silver halide emulsion as claimed in claim 1 wherein the J-band sensitization type dye is selected from dyes represented by the general formula (I), (II), (III), (IV), (V) or (VI):

Claim 4

A photographic silver halide emulsion as claimed in claim 1 wherein the amount of silver bromide is from about 15 to about 95 molar percent.

Claim 5

A photographic silver halide emulsion as claimed in claim 3 wherein the amount of silver bromide is from 30 to 90 molar percent.

Claim 6

A photographic silver halide emulsion as claimed in claim 1 wherein an average particle size, by number, of thE silver halide is less than 0.6 Mu .

Claim 7

A photographic silver halide emulsion as claimed in claim 1 wherein the silver halide particles are regular.

Claim 8

A photographic silver halide emulsion as claimed in claim 1 wherein the photographic emulsion is monodispersed.

Claim 9

A photographic silver halide emulsion as claimed in claim 1 wherein the photographic emulsion further contains a water-soluble type coupler or an oil-protected type coupler.

Claim 10

A photographic silver halide emulsion as claimed in claim 1 wherein the J-band sensitization type dye is selected from the group consisting of

Claim 11

A photographic silver halide emulsion as claimed in claim 2, wherein said substituted alkyl group as represented by R1 and R2 is a member selected from the group consisting of a hydroxyalkyl group, an acetoxyalkyl group, an alkoxyalkyl group, a carboxy group containing an alkyl group, a sulfo group containing an alkyl group, a benzyl group, a phenylethyl group, a p-sulfobenzyl group, a p-carboxybenzyl group, a p-sulfophenethyl group, and an allyl group.

Claim 12

A photographic silver halide emulsion as claimed in claim 10, wherein said hydroxyalkyl group is a member selected from the group consisting of a 2-hydroxyethyl group and a 4-hydroxybutyl group; wherein said acetoxyalkyl group is a member selected from the group consisting of a 2-acetoxyethyl group and a 3-acetoxypropyl group; wherein said alkoxyalkyl group is a member selected from the group consisting of a 2-methoxyethyl group and a 4-butoxybutyl group; wherein said carboxy group containing an alkyl group is a member selected from the group consisting of a 2-carboxyethyl group, a 3-carboxypropyl group, and a 2-(2-carboxyethoxy)ethyl; and wherein said sulfo group containing an alkyl group is a member selected from the group consisting of a 2-sulfoethyl group, a 3-sulfopropyl group, a sulfobutyl group, a 4-sulfobutyl group, a 2-hydroxy-1-sulfopropyl group, a 2-(3-sulfopropoxy)ethyl group, a 2-acetoxy-1-sulfopropyl group, a 3-methoxy-2(3-sulfopropoxy)propyl group, a 2-(2-(3-sulfopropoxy)ethoxy)ethyl group, and a 2-hydroxy-3-(3''-sulfopropoxy)propyl group.