Eastman-kodak Company

Louis Elbert Friedrich

Stephen P Singer

Bernard A Clark

Philip A Allway

David T Southby

Jane Sarah Boff

Charles E Heckler

Xiqiang K Yang

James A Friday

Wojciech K Slusarek

J Ramon Vargas

David Hoke

Paul A Burns

Robert F Romanet

Daniel L Kapp

John Demita Goddard

David S Ross

Judith A Bose

Joan C Potenza

Zbyslaw R Owczarczyk

Tania Zuberi

Ronald R Valente

Marcello Vitale

John R Fyson

David B Bailey

Jared B Mooberry

John W Harder

Trevor J Wear

Paul L Stanley

Scott Channing Sutton

Janet N Younathan

Sharon R Lunt

Robert C Stewart

Lelia Cosimbescu

Judith A Bogie

Christopher W Grote

Siu (Lambert) C Tsoi

The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless imidazole compound of formula (I) that undergoes less than 10% chemical or redox reaction with oxidized developer and which enables the photographic speed of the element to be increased by at least 0.05 stop without increasing granularity, compared to the same element without the compound, wherein the compound of formula (I) has the structure: wherein

Photographic element containing a speed-enhancing compound

The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless heterocyclic compound having either one or two hetero atoms in the ring or ring system, being other than an imidazole compound, that undergoes less than 10% chemical or redox reaction directly with oxidized developer and which has a partition coefficient to enable the photographic speed of the element to be increased by at least 0.03 stop without increasing granularity, compared to the same element without the compound. The heterocyclic compounds increase speed without a concomitant increase in size of the light-sensitive silver halide grains.

Photographic element with speed-enhancing compound

This invention relates to a multilayer silver halide photographic element, generally processed with phenylenediamine based developer solutions, comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one layer additionally contains a 2-substituted-5-amino-1-napthol DIR according to Formula (I): wherein: It has been found that such 2-substituted-5-amino-1-napthol based DIRs have improved properties and can provide a conventional silver halide photographic element with excellent image structure and color reproduction.

Photographic material with improved development inhibitor releases

The invention relates to a novel kind of anthranilic acid compound that releases a UG as a function of chemical bond cleavage according to Formula (I):Q-(AAS)-UGwhere UG is an useful group and is chemically bonded to (AAS); (AAS) is an anthranilic acid switching group; and Q is a group in which the bond to (AAS) is broken so that the -(AAS)-UG fragment subsequently decomposes to the free UG. In one embodiment this invention relates to a multilayer silver halide photographic element comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one layer additionally contains an anthranilic acid compound according to Formula (II):G-(TG1)-(AATG)-(TG2)-PUGwhere G is a group in which the bond to the timing group is cleaved upon reaction with oxidized developer; TG1 and TG2 represent any known timing or switching group and may be the same or different; q and p are independently 0 or 1; AATG represents an anthranilic acid timing group and PUG is a photographically useful group.

Compound containing an anthranilic acid blocking group

Disclosed is a color photographic element comprising at least one light sensitive silver halide emulsion layer containing a compound that does not react with oxidized developer, has a Log Kow high enough to improve speed, compared to the same layer without the compound, and comprises

Color photographic element containing improved heterocyclic speed enhancing compound

Color photographic element containing speed-improving benzotriazole polymer

Photographic element containing a high-dye-yield coupler for producing a yellow hue

Disclosed is a color photographic element comprising at least one of (1) a light sensitive silver halide emulsion layer and (2) a non-silver containing light insensitive layer, said at least one layer containing a compound with a minimum of three heteroatoms that does not react with oxidized developer and that has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound. The invention provides improved light sensitivity.

Color photographic element containing speed improving compound

Method of producing a photographic image

Color photographic element containing nitrogen heterocycle derivative and inhibitor releasing coupler

Color photographic element containing ballasted mercaptodiazole derivative and inhibitor releasing coupler

Color photographic element containing a coupler releasing derivative with at least three heteroatoms with specific hydrophobicity

Color photographic element containing ballasted triazole derivative and inhibitor releasing coupler

Photographic element containing ballasted tetrazole derivative and inhibitor releasing coupler

Growing community of inventors

Rochester, NY, United States of America

Louis Elbert Friedrich