Matches 151 - 200 out of 283 < 1 2 3 4 5 6 >
Match Document Document Title
4468452 Color diffusion transfer photographic elements  
A color diffusion transfer photographic element comprising a support having provided thereon a layer containing a dye-providing material associated with a light-sensitive silver halide emulsion,...
4461827 Color photographic recording material containing a non-diffusible dye releaser from which a complexible azo dye is released during development  
Metal complexes, particularly copper and nickel complexes, of azo dyes corresponding to formula suitable for use as magenta-colored image dyes for the production of colored images by the dye...
4459351 Photographic element and process employed combination of surface and internal latent image silver halide  
A redox release compound that is capable upon oxidation of releasing a silver ion complexing heterocyclic thio moiety enables reduction of the concentration of silver required in a photographic...
4450223 Diffusion transfer material and process  
A photographic silver halide material comprising a compound which is capable of being reduced by a silver halide developing agent at a rate slower than that of image-wise developable silver halide...
4446219 Photographic material comprising a layer with Ni complex of 2,2'-bisphenol  
In a photographic material suitable for use as image receptor element for the dye diffusion transfer process, a dyeable layer arranged on a layer support contains nickel chelates of a...
4444867 Photographic recording material for diffusion processes and new non-diffusing sulfilimine compounds suitable for use therein  
Sulfilimine compounds of formula I ##STR1## wherein X is the integrating residue of a photographically active compound H 2 N--A--X and A is a linking member between X and N consisting of a...
4435495 Release of photographic reagents with 3-pyrazolidone developing agents  
Photographic reagents can be released, under alkaline conditions, from certain photographic reagent releasing compounds by means of oxidized 3-pyrazolidone developing agents. Particularly useful...
4433050 Direct positive type light sensitive silver halide photographic material  
A direct positive type light sensitive silver halide photographic material is disclosed. At least one layer containing an unfogged internal latent image type silver halide emulsion, is provided on...
4431728 Silver halide photographic light-sensitive material  
There is disclosed a silver halide photographic light-sensitive material which comprises a support, a combination of an unfogged surface latent image type silver halide photographic emulsion and a...
4425422 Formation of color photographic image with azo dye containing alkoxy or thioalkoxy metal chelating group  
A method for the formation of a color photographic image comprising exposure and development of a photographic element, said photographic element comprising at least one silver halide emulsion...
4423142 Photographic silver halide color materials and process for the production of dye images by diffusion transfer  
Photographic material and process suitable for producing by diffusion transfer a color image and comprising on a support at least two differently spectrally sensitive negative working silver halide...
4421846 Photographic element with reducible metal complex that releases photographically useful compound  
A photographic element containing a nondiffusible metal complex capable of releasing a diffusible photographically useful group. The complex contains at least one poly-dentate ligand which contains...
4420557 Color photographic recording material containing a non-diffusible electron donor precursor compound  
Compounds corresponding to the formula: ##STR1## wherein R 1 represents an aromatic group, and R 2 represents H, alkyl, alkenyl, aryl or acyl, are suitable ED precursor compounds for use in...
4419435 Photographic products and processes employing 6-heterocyclylazo-3-pyridinol nondiffusible cyan dye-releasing compounds and precursors thereof  
Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible...
4416979 Photographic light-sensitive element with nitrophyenylazo metal complexable dye  
A photographic light-sensitive element for a color diffusion transfer process which has a silver halide emulsion layer and also employs a nondiffusible cyan dye releasing compound. The compound is...
4416970 Use of manganous compounds in image transfer elements  
Image transfer photographic assemblages, processes, compositions and cover sheets are described which employ a manganous compound. After processing, the manganous compound is capable of diffusing...
4409315 Reducing post-process D.sub.min increase in positive redox dye-releasing image transfer systems using oxidants in cover sheets  
Photographic assemblages are described employing positive-working redox dye-releasers and a cover sheet containing an oxidant having an electrode potential of from about -200 mV up to about 1000 mV...
4407929 Color photographic recording material for the production of colored images by the dye diffusion transfer process  
In a color photographic recording material for the dye diffusion transfer process a transparent layer support, a light sensitive element, a light-reflecting opaque layer and an image-receiving...
4407930 Photographic products and processes employing substituted sulfonamidophenol or sulfonamidonaphthol dye-releasers  
Photographic elements, diffusion transfer assemblages and processes are described which employ a nondiffusible, redox, dye-releasing compound comprising a ballasted, sulfonamidophenol or...
4396699 Process for the production of a multicolor image by image-wise dye diffusion transfer  
A process for the production of a multi-color dye image by dye diffusion transfer operating with a photographic multilayer multi-color material containing different non-diffusing dyes or dye...
4396710 Photographic recording material with metal complexable, heterocyclic azo dye  
Cyan images may be prepared by the dye diffusion transfer process, using dye-releasers which on development release diffusible dyes capable of forming light-fast cyan metal-dye-complexes...
4393132 Photographic recording material with arylazocyanoacetic ester dye releasers  
For the production of light-fast yellow images (transfer images and retained images) by the dye diffusion transfer process dye-releasers are useful which on development release diffusible azo dyes...
4391896 Mixture of nondiffusible redox dye-releasers for curve shape control  
Curve shape control, especially for lower scale contrast, of a photographic element is achieved by employing with the silver halide emulsion layer two nondiffusible redox dye-releasing compounds of...
4386149 Process for the production of photographic images by dye diffusion transfer and photographic material suitable in this process  
A photographic dye diffusion transfer process is provided which operates by imagwise release of a dye. The dye diffuses to a receiving layer and is mordanted there to give a dye image. The dyes are...
4381339 Photographic recording material and non-diffusing compounds to be used in the material which contains a photographically active group which can be split off  
Novel non-diffusing reducible compounds of formula I which under alkaline development conditions release a diffusible photographically useful compound are of use in color diffusion transfer...
4375506 Timing layers for color transfer assemblages containing positive-working redox dye-releasers and development accelerators  
Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and a neutralizing layer for use with negative-working silver halide emulsions...
4371604 Photographic material suited for use in diffusion transfer photography  
A photographic material for diffusion transfer photography containing a quinonoid compound, which is capable in reduced state and under alkaline conditions of releasing a photographically useful...
4368251 Color diffusion transfer photographic light-sensitive sheet  
A photographic light-sensitive sheet containing at least one light-sensitive silver halide emulsion layer, with at least one of said emulsion layers being associated with a compound represented by...
4368260 Photographic light sensitive element  
A photographic light-sensitive element which comprises on a support a light-sensitive silver halide emulsion layer and having associated therewith a non-diffusible compound capable of, under...
4366240 Color photographic recording material containing non-diffusing electron donor precursor compounds  
5- or 6-membered α-lactones of phenolic compounds, in which the phenyl ring carries a hydroxyl or amino group in its 2- or 4-position to the lactonized phenolic hydroxyl group and in which the...
4363865 Imido methyl blocked photographic dyes and dye releasing compounds  
Imidomethyl blocked photographic image dyes and dye releasing compounds are useful in photographic elements, film units and processes. The blocked photographic dyes and dye releasing compounds have...
4360581 Color photographic recording material containing non-diffusing electron donor compounds  
Electron donor compounds of the formula I are effective to reduce non-diffusing reducible color providing compounds which when reduced release under the photographic development conditions a...
4358532 Photographic element  
A photographic element containing a compound represented by formula (I) ##STR1## wherein G represents --OR 1 or --NHR 2 , R 1 represents hydrogen or a hydrolyzable moiety, R 2 represents...
4358525 Blocked photographically useful compounds and photographic compositions, elements and processes employing them  
Photographically useful compounds such as photographic reagents and photographic dyes are blocked with a grouping which, under alkaline conditions, is cleaved from the compound by an intramolecular...
4358404 Nondiffusible 6-arylazo-3-pyridinol  
Nondiffusible compounds are described having a releasable 6-arylazo-3-pyridinol magenta dye moiety or precursor thereof having the formula ##STR1## wherein: (a) R represents hydroxy or amino; ...
4358527 Photographic products employing nondiffusible metal-complexed azo dye-releasing compounds and precursors thereof  
Photographic elements and diffusion transfer assemblages are described which employ a nondiffusible compound having a releasable azo dye moiety or precursor thereof having the following formula:...
4358526 Photographic light-sensitive sheet for the color diffusion transfer process  
A photographic light-sensitive sheet for the color diffusion transfer process which comprises a support having thereon at least one light-sensitive silver halide emulsion layer having associated...
4356249 Timing layers and auxiliary neutralizing layer for color transfer assemblages containing positive-working redox dye-releasers  
Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and two neutralizing layers for use with negative-working silver halide emulsions...
4356250 Use of zinc salts to increase dye stability  
Photographic elements, diffusion transfer assemblages and processes are described which employ redox dye-releasing materials and a zinc salt, such as zinc oxide, in such a form, location and...
4353973 Use of oxalic acid or an acid salt thereof in color transfer assemblages  
Photographic assemblages, elements, receiving elements and cover sheets are described employing a neutralizing layer comprising about 75 to about 150 meq. of acid/m 2 of element for neutralizing...
4353975 Dye-diffusion transfer process  
A dye-diffusion transfer process for producing (a) dye image(s) with improved dye density is provided, said process comprising the steps of: (1) image-wise photo-exposing a photographic color...
4345016 Color photographic sensitive material  
A color photographic sensitive material containing a polymer comprising at least 1 mol % of a repeating unit represented by formula (I) ##STR1## wherein A represents a divalent group, n is 1 or 2,...
4341858 Image-transfer reversal emulsions and elements with incorporated quinones  
Direct-positive photographic emulsions and elements which include internal-image silver halide grains, a nucleating amount of a hydrazine compound and a redox dye releaser are improved by the...
4340661 Photographic light sensitive sheet for color diffusion transfer process  
A photographic light sensitive sheet for color diffusion transfer process which comprises a light sensitive silver halide emulsion layer associated with a novel azo dye-providing compound...
4336322 Color photographic light-sensitive material  
A color photographic light-sensitive material is described containing a dye-releasing redox compound having the following formula: ##STR1## wherein G represents a hydroxy group or a group providing...
4323635 Direct reversal photographic color material  
A color photographic material suitable for processing with an alkaline solution in the presence of a developing agent is described, comprising a support and, in sequence, the following five layers:...
4310693 o-Aminophenol compounds  
o-Aminophenol derivatives are described represented by the formula (I) ##STR1## wherein R represents --NH 2 or --NH--CO--R 6 ; R 1 and R 2 which may be the same or different, each can represent...
4308336 Color photographic sensitive materials  
In color photographic sensitive materials comprising at least one direct reversal silver halide emulsion layer associated with a diffusible dye-releasing redox compound on a base, the improvement...
4299895 Photographic elements containing polymers which coordinate with metal ions  
A photographic element comprising a support, a layer containing an image dye ligand or dye ligand forming material and a layer containing a dye mordant, wherein the mordant layer has associated...
4293641 Photographic light-sensitive material  
A photographic light-sensitive material is described comprising a support having thereon at least two silver halide photographic emulsion layers capable of forming a silver image upon treatment...
Matches 151 - 200 out of 283 < 1 2 3 4 5 6 >