Eastman-Kodak Company

Jan R Haase

Richard A Landholm

James J Krutak

Carl H Eldredge

Paul B Gilman, Jr

Novel azo dye-providing compounds and photographic elements containing such compounds are described. The present compounds contain a carrier moiety which, as a function of oxidation under alkaline conditions, provides a substance having a mobility different than that of the starting compound.

Azo dye compounds and photographic materials

A process for amplifying an imagewise exposure of a silver halide photographic element comprises the steps of (a) developing the element to release spectral sensitizing dye from a release compound as a function of silver halide development; (b) adsorbing the spectral sensitizing dye to undeveloped silver halide grains; (c) exposing the element overall to radiation absorbable by released spectral sensitizing dye to render developable silver halide grains to which the released spectral sensitizing dye has been adsorbed and (d) developing silver halide grains.

Amplification process

Cyan azo dye-providing compounds having the formula ##STR1## wherein Car represents a carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye from said compound;

Cyan azo dye-providing compounds

A photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer and one of said layers having associated therewith a yellow image dye-releasing compound having a formula as follows ##STR1## wherein Car represents a sulfonamidophenol or sulfonamidonaphthol carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye from said compound. X represents a bivalent linking group of the formula --R.sup.1 --L.sub.n --R.sup.1.sub.p -- where each R.sup.1 can be the same or different and each represents alkylene phenylene; or substituted phenylene; L represents a bivalent radical selected from oxy, carbonyl, carboxamido, carbamoyl, sulfonamido, sulfamoyl, sulfinyl or sulfonyl; n is an integer having a value of 0 or 1; p is 1 when n equals 1 and p is 1 or 0 when n equals 0, provided that when p is 1 the carbon content of the sum of both R radicals does not exceed 14 carbon atoms; R represents hydrogen or alkyl; J represents a bivalent radical selected from sulfonyl or carbonyl; m and q each represent an integer having a value of 0 or 1; E represents hydrogen, halogen, alkyl or alkoxy; Z represents hydrogen or an electron withdrawing group selected from cyano, trifluoromethyl, alkylsulfonyl, substituted alkylsulfonyl, phenylsulfonyl, or substituted phenylsulfonyl; a carboxylic acid ester having the formula --COOR.sup.2 wherein R.sup.2 is alkyl, phenyl or substituted phenyl; sulfo, a sulfamoyl radical having the formula --SO.sub.2 NR.sup.3 R.sup.4 wherein R.sup.3 represents hydrogen or alkyl, and R.sup.4 represents hydrogen, alkyl, substituted alkyl; benzyl, phenyl, substituted phenyl; alkylcarbonyl, or phenylcarbonyl, with the proviso that the carbon content of the sum of R.sup.3 and R.sup.4 not exceed 14 carbon atoms; a carbamoyl radical having the formula --CON(R.sup.3).sub.2 wherein each R.sup.3 can be the same or different and is as described previously; and M represents hydrogen, a solubilizing group or precursor thereof selected from carboxy, sulfo, a sulfamoyl radical as described for Z or a carboxylic acid ester as described for Z.

Yellow azopyrazoline dye releasing redox compounds for photographic

A magenta image dye-providing compound having a formula as follows: ##STR1## wherein: Car represents a carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye from said compound;

Magenta image-providing phenylazonaphthyl dues containing a morpholinyl

Novel azo magenta dye-providing compounds and photographic elements containing such compounds are described. The present compounds contain a carrier moiety which, as a function of oxidation under alkaline conditions, provides a substance having a mobility different than that of the starting compound.

Diffusable dye-releasing compounds which are cleavable upon oxidation

Azo dye-providing compounds and photographic materials containing such compounds are described. The present compounds, as a function of photographic processing under alkaline conditions, provide a dye substance having a mobility different than that of the compound.

Photographic materials with ballasted, alkali cleavable azo dyes

A magenta image dye-providing compound having a formula as follows: ##SPC1## Wherein:

Magenta image-providing phenylazo-naphthyl dyes

Magenta image dye-providing compound having formulas as follows: ##SPC1## Wherein:

A nondiffusible sulfonamide compound which is alkali-cleavable upon oxidation to release a diffusible magenta color-providing moiety from a benzene nucleus thereof, said compound having a formula as follows: ##SPC1## Wherein

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Rochester, NY, United States of America

Jan R Haase