Eastman-kodak Company

Thomas H Jozefiak

Rakesh Jain

Hugh M Williamson

Philip T Lau

Thomas R Welter

John L Pawlak

Ping-Wah Tang

Sundaram Krishnamurthy

Ping W Tang

David J Decker

Richard W Jr Heidebrecht

The invention provides a photographic light sensitive silver halide emulsion layer having associated therewith a phenolic dye-forming coupler having the formula: ##STR1## wherein: R.sup.1 and R.sup.2 are independently selected from hydrogen and alkyl or aryl groups;

Photographic dye-forming coupler, emulsion layer, element, and process

A photographic element comprises a light sensitive silver halide emulsion layer having associated therewith a cyan dye-forming coupler dispersed in an organic solvent, the coupler having the formula: ##STR1## wherein A, B, and C are hydrogen or fluoride;

Photographic element containing a novel cyan dye forming coupler and

A photographic element comprises a light sensitive silver halide emulsion layer having associated therewith a cyan dye-forming coupler dispersed in an organic solvent, the coupler having the formula: ##STR1## wherein A, B, and C are hydrogen or fluorine; X is selected from the group consisting of halogen, alkoxy and methyl groups; R is a straight chain aliphatic group which is unsubstituted or substituted with one or members selected from the group consisting of --F, --R', --OR', --SO.sub.2 R', --SO.sub.2 NHR', --CONHR', --COOR', --NHCOR', --NHSO.sub.2 R', and --OCOR' where R' is a primary or secondary alkyl group; R' is a substituent group and m is from 0 to 4; COG is hydrogen or a coupling-off group capable of being split-off by an oxidized color developer; and wherein the substituent groups X, R, and R' are selected so as to ballast the coupler and prevent it from wandering within the photographic coatings. The invention also encompasses a process for forming an image in an element as described after it has been exposed.

The invention provides a photographic element comprising a light-sensitive photographic silver halide emulsion having associated therewith a coupler compound having the formula: ##STR1## wherein X represents a hydrogen atom or a coupling-off group;

Novel imidazo[3,2-a]imidazole cyan dye-forming couplers and photographic elements containing them are described. The couplers are represented by the following structure: ##STR1## wherein: EWG.sub.1 and EWG.sub.2 each independently represent an electron withdrawing group;

Photographic elements with heterocyclic cyan dye-forming couplers

A photographic element having at least one photosensitive silver halide layer and associated therewith both a particular type of color coupler and a particular type of stabilizer. The color coupler is of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group, X is H or a group which splits off on coupling with oxidized color developer, R is an alkyl, cycloalkyl, aryl or heterocyclic which may be substituted, --COR.sup.1, --CSR.sup.1, SOR.sup.1, SO.sub.2 R.sup.1, --NHCOR.sup.1, --CONHR.sup.1, --COOR.sup.1, --COSR.sup.1, --NHSO.sub.2 R.sup.1 wherein R.sup.1 is an alkyl, cycloalkyl, or aryl group any of which are optionally substituted, and wherein two or more of A, B, R, and X optionally form part of a ring, Link is a linking group and n is 0, 1 or 2. The stabilizer is of the general formula (II), (III) or (IV): ##STR2## wherein the substituents of (II), (III) and (IV) are as defined in the specification.

Photographic elements containing particular color couplers in

A photographic element comprising a support, at least one photosensitive silver halide layer and associated therewith a color coupler and a stabilizer therefor which stabilizer is an acrylate or acrylamide homopolymer or copolymer of low water solubility, the color coupler being of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,

A photographic element having at least one photosensitive silver halide layer and associated therewith both a particular type of color coupler and a particular type of stabilizer. The color coupler is of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,

Growing community of inventors

Rochester, NY, United States of America

Thomas H Jozefiak