Multicolor photographic elements containing coarse-grain silver halide emulsions

Claim 2

A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING AN IMAGE DYE-PROVIDING LAYER UNIT COMPRISING A FINE-GRAIN SILVER HALIDE EMULSION HAVING ASSOCIATED THEREWITH A COLOR COUPLER AND ANOTHER DYE IMAGE-PROVIDING LAYER UNIT CONTAINING A COARSE-GRAIN SILVER HALIDE EMULSION WHICH HAS A MEAN SILVER HALIDE GRAIN SIZE AT LEAST 50 PERCENT LARGER THAN THE MEAN GRAIN SIZED OF SAID FINE-GRAIN EMULSION, AND ASSOCIATED THEREWITH A COLOR COUPLER AND AT LEAST 10 MG./FT.2 OF A COMPOUND DIFFERENT FROM SAID COLOR COUPLER WHICH IS A NONDIFFUSIBLE ANIONIC ORGANIC POLYMERIC ACID HAVING AN EQUIVALENT WEIGHT OF AT LAST 100 AND LESS THAN 800 BASED ON ACID GROUPS: AND WHEREN SAID FINE GRAIN EMULSION IS SUBSTANTIALLY FREE OF SAID NON-DIFFUSIBLE ANIONIC ARGANIC POLYMER ACID COMPOUND.

Claim 3

A photographic element according to claim 1 wherein said nondiffusible organic acid is a polymer compound containing sulfonic acid groups thereon.

Claim 4

A photographic element according to claim 1 wherein said coarse-grain silver halide emulsion has a mean grain size of at least 0.8 micron and said anionic organic compound has an equivalent weight of less than 300.

Claim 5

A photographic element according to claim 1 wherein said fine-grain emulsion has a mean grain size of less than 0.4 micron and said coarse-grain emulsion has a mean grain size of at least 1.0 micron.

Claim 6

A photographic element according to claim 1 wherein said image dye-providing layer unit containing said fine-grain emulsion comprises at least a 40 percent stoichiometric excess of said color coupler based on silver.

Claim 7

A photographic element according to claim 1 which comprises at least two of said image dye-providing layer units which each contain fine-grain silver halide emulsion at a coverage of less than 30 mg./ft.2 based on silver.

Claim 8

A photographic element according to claim 1 wherein said anionic organic compound is an anionic sulfonic acid and is present in a concentration of at least 10 mg./ft.2.

Claim 9

A photographic element according to claim 1 wherein said anionic organic acid is a polymeric compound having a molecular weight of at least 3000.

Claim 10

A photographic element according to claim 1 wherein said anionic compound is a polymeric compound comprising units having sulfonic acid groups thereon and units having crosslinking groups thereon.

Claim 11

A photographic element comprising a support and having thereon (1) a yellow image dye-providing layer unit comprising a silver halide emulsion having a mean grain size of at least 0.8 micron and a yellow image dye-providing color coupler, (2) a magenta image dye-producing layer unit comprising a silver halide emulsion having a mean grain size of less than 0.4 micron and a magenta image dye-providing coupler, and (3) a cyan image dye-providing layer unit comprising a silver halide emulsion having a mean grain size of less than 0.4 micron and a cyan image dye-providing coupler, wherein a nondiffusible anionic organic polymer compound having sulfonic acid groups thereon and having an equivalent weight of at least 100 based on sulfonic acid groups is present in said yellow image dye-providing layer unit in a concentration of at least 10 mg./ft.2 and wherein said magenta and cyan image dye providing units are substantially free of said non-diffusible anionic organic polymeric acid compounds.

Claim 12

A photographic element comprising a support and having thereon (1) a yellow image dye-providing layer unit comprising a silver halide emulsion having a mean grain size of at least 0.8 micron and a yellow image dye-providing color coupler, (2) a magenta image dye-producing layer unit comprising a silver halide emulsion having a mean grain size of less than 0.4 micron and a magenta image dye-providing coupler, and (3) a cyan image dye-providing layer unit comprising a silver halide emulsion having a mean grain size of less than 0.4 micron and a cyan image dye-providing coupler, wherein a nondiffusible anionic organic polymer compound having sulfonic acid groups thereon and having an equivalent weight of at least 100 based on sulfonic acid groups is present in said yellow image dye-providing layer unit in a concentration of at least 10 mg./ft.2 and wherein said magenta and cyan image dye providing units are substantially free of said non-diffusible anionic organic polymeric acid compounds.

Claim 13

A photographic element according to claim 10 wherein said anionic organic compound is an acrylic polymer.

Claim 14

A photographic element according to claim 10 wherein said anionic organic compound is present in said yellow image dye-providing layer unit in a concentration of at least 25 mg./ft.2 and said cyan and magenta dye image-providing layer units contain less than 5 mg./ft.2 of said anionic organic compound.

Claim 15

A photographic element according to claim 10 wherein said anionic organic compound has an equivalent weight of less than 800 and is present in said yellow image dye-providing layer unit in a concentration of at least 25 mg./ft.2.

Claim 16

A photographic element according to claim 10 wherein said magenta and cyan image dye-providing layer units contain at least a 40 percent stoichiometric excess based on effective silver.

Claim 17

A photographic element according to claim 10 wherein said anionic organic compound is a poly(3-methacryloyloxypropane-1-sulfonic acid).

Claim 18

A photographic element according to claim 10 wherein said anionic compound is poly(N-isopropylacrylamide--3-acryloyloxypropane-1-sulfonic acid, sodium salt--2-acetoacetoxyethyl methacrylate).

Claim 19

A photographic element according to claim 10 wherein said anionic compound is poly(N-isopropylacrylamide--3-methacryloyloxypropane-1-sulfonic acid, sodium salt--2-acetoacetoxyethyl methacrylate).

Claim 20

A photographic element according to claim 10 wherein said anionic organic compound in said yellow image dye-providing layer unit in a compound different from said image dye-providing color coupler.