Eastman-kodak Company

Daniel L Kapp

Janet N Younathan

Stephen P Singer

Wojciech K Slusarek

Robert J Ross

David T Southby

Xiqiang K Yang

Zbyslaw R Owczarczyk

William J Begley

Terrence Robert O'Toole

Frank D Coms

Louis Elbert Friedrich

Paul A Burns

Robert F Romanet

Paul P Spara

Kenneth G Harbison

Susan M Fischer

Frank A Pettrone

Kenneth Don Fowler

Mridula Nair

Yongcai Wang

Paul B Merkel

Peter J Twist

Philip T Lau

Stanley W Cowan

Jerrold N Poslusny

Tamara K Jones

Jared B Mooberry

Franklin D Saeva

Tiecheng A Qiao

Bernard A Clark

Rakesh Jain

James P Merrill

James J Seifert

David G Lincoln

William R Schleigh

David R Foster

Michael W Fichtner

Rajiv P Balasubramanian

John R Ross

Porous particles are prepared using a first water-in-oil emulsion comprising a first marker material in a first aqueous phase that is dispersed in a first oil phase containing a polymer and a first organic solvent, and a second water-in-oil emulsion comprising a second marker material in a second aqueous phase that is dispersed in a second oil phase. The first and second marker materials are detectably different. The two water-in-oil emulsions can be used to form a third water-in-oil emulsion containing distinct droplets of the first and second aqueous phases. This third water-in-oil emulsion is dispersed in a third aqueous phase containing a surface stabilizing agent to form a water-in-oil-in-water emulsion containing droplets of the third water-in-oil emulsion. The organic solvents are removed from the water-in-oil-in-water emulsion to form porous particles comprising first and second discrete pores that are isolated from each other. The first marker material is present within the first discrete pores, and the second marker material is present within the second discrete pores.

Preparation of porous particles with multiple markers

This invention relates to a silver halide photographic element comprising a support and at least one gelatin containing imaging or non-imaging layer wherein during chemical processing the maximum swell of the layer is greater than the equilibrium swell.

Color photographic element with improved developability

Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer containing an azopyrazolone masking coupler and a monosubstituted quinone of formula I:

Reduced fog in photographic coatings containing a monosubstituted quinone

Silver halide photographic element comprising a support bearing a light sensitive silver halide emulsion layer and a cyclic azole dye forming coupler associated with a stabilizer combination comprising:

Photographic element containing pyrazoloazole coupler and a specific

A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element containing an image modifying compound which comprises a magenta coupler moiety which upon reaction with oxidized color developing agent during processing forms a dye, said coupler moiety having attached to the coupling site, either directly or through a timing group, a 1,2,3-triazole moiety, the attachment being through the second nitrogen atom of the triazole moiety.

Photographic elements containing development inhibitor releasing

The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula II: wherein

Photographic element having improved magenta dye light stability and

Disclosed is a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by Formula I: ##STR1## wherein R' represents the group ##STR2## in which R.sup.1, R.sup.2, and R.sup.3 independently selected all groups, provided that any two of R.sup.1, R.sup.2, and R.sup.3 may join to form a ring;

Photographic element containing magenta coupler having improved

This invention relates to a method of preventing fog formation in a silver halide photographic element, said method comprising bringing a silver halide developer solution, or a solution preceding a silver halide developer solution, into contact with a cyanide scavenger by a method other than the seasoning out of the cyanide scavenger from a sensitized silver halide photographic element.

Method of processing a silver halide photographic element which reduces

Multilayer color photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a nucleophile which can react with a uniform distribution of a sulfinate blocked dye moiety contained in the element to release a solubilized unblocked dye.

Multilayer color photographic element containing a solubilized blocked

A multilayer silver halide color photographic element comprising a support bearing a light-sensitive silver halide emulsion layer and a non-diffusible yellow-colored magenta dye-forming masking coupler wherein the masking coupler is a 2'-hydroxy-5'-substituted-4-phenylazo-5-pyrazolone. The masking coupler has good coupling activity and desirable hues, and can be obtained in good yields by simple syntheses.

Color photographic elements containing yellow colored magenta dye

This invention provides a photographic process and element where the element comprises a support bearing a light-sensitive photographic silver halide layer containing (1) a bicyclic azole coupler, (2) an azopyrazolone masking coupler, and (3) an aromatic electron-rich compound having ring substituents for which the sum of the individual Hammett sigma-para values is more negative than -0.80.

Photographic element containing an azopyrazolone masking coupler

Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.

Photographic elements comprising 2-phenylcarbamoyl-naphthol

The invention provides a photographic element comprising a support bearing a light-sensitive photographic silver halide layer having associated therewith a masking coupler comprising:

Azopyrazolone masking couplers

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Rochester, NY, United States of America

Daniel L Kapp