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Patent Searching and Data


Matches 251 - 300 out of 16,302

Document Document Title
WO/1992/011573A1
A color photographic silver halide negative working duplicating element comprising a support having thereon at least one red-sensitive photographic silver halide emulsion layer comprising at least one cyan image-dye forming coupler; at l...  
WO/1992/011726A1
A hybrid multiple color print reproduction scheme for a digital color image photo-finishing system employing a digitally driven high spatial resolution color printer converts a stored digital positive (e.g. RGB-representative) color imag...  
WO/1992/011575A1
A photographic element including a support bearing a silver halide photographic emulsion, at least one color-forming coupler and a masking coupler, wherein said masking coupler is represented by formula (A): COUP - LINK - DYE, wherein CO...  
WO/1992/010789A1
A method of developing an imagewise exposed silver halide colour material to provide acceptable sensitometric results with reduced variability which comprises carrying out colour development in the presence of one or a combination of bla...  
WO/1992/010788A1
A 1-H-pyrazolo-[1,5-b]-1,2,4-triazole having a combination of an arylthio coupling-off group and a tertiary alkyl group attached via its tertiary carbon atom in the 6-position preferably has general formula (I), wherein R1 is a tertiary ...  
WO/1992/009009A1
A method of processing an imagewise exposed photographic silver halide material in a system which includes circulation and replenishment of the processing solution employed in at least one processing step characterised in that said proce...  
WO/1992/009010A1
The invention provides novel photographic compositions comprising a propene isomer of formulae (I), wherein A, B or E, each individually represent hydrogen, or an electron withdrawing group, selected for example from -CN, -NO2, -SO2R, -S...  
WO/1992/007299A1
A process for producing a photographic colour image which comprises processing an imagewise exposed photographic silver halide colour material in a colour developer bath and a separate redox amplification bath wherein the processing time...  
WO/1992/007300A1
A method of photographic colour processing which comprises a bleach step wherein the bleach solution comprises hydrogen peroxide, or a compound which releases hydrogen peroxide, and halide ions and which has a pH in the range of 5 to 11 ...  
WO/1992/006411A1
The present invention relates to a dispersion of a photographic stabilizer and/or a photographic coupler. It has been found that the propensity of a dispersion to crystallize is much reduced if the aqueous phase is relatively increased b...  
WO/1992/005471A1
The invention provides a redox amplification colour development composition comprising an oxidising agent and a colour developing component; the composition comprising a stabiliser for the oxidising component which is also effective as a...  
WO/1992/003762A1
A photographic material is described having a silver halide emulsion layer that includes a wandering magenta dye-forming coupler compound, and a silver halide emulsion layer that includes a low-reactivity yellow dye-forming coupler, wher...  
WO/1992/001971A1
An emulsion or dispersion in which the continuous phase is aqueous and comprises gelatin wherein its viscosity has been reduced by addition thereto of a water-soluble protein or a surfactant which is an ester of a polyalkoxylate.  
WO/1992/001972A1
A method of processing an imagewise exposed photographic silver halide material which includes a redox amplification dye image-forming step and a bleach step using an aqueous solution of hydrogen peroxide or a compound capable of releasi...  
WO/1992/001970A1
Light-sensitive silver halide color photographic element having at least one layer comprising a silver halide photographic emulsion, at least one 2,5-diacylamino phenol cyan coupler and at least one sulfo substituted thiacarbocyanine spe...  
WO/1992/001242A1
The present invention relates to a reversal color photographic material. The material contains three elements which are photosensitive to the three regions of the spectrum respectively. Each element contains at least two emulsions having...  
WO/1992/001243A1
The invention relates to a reversal color photographic print material. Said reversal material comprises a support with, in order, a substantially light-insensitive fine grain emulsion layer which does not take part in the image formation...  
WO/1992/000299A1
The invention provides a pyrazolo[1,5-a]benzimidazole compound of formula (I) wherein R to R4 are selected from H, substituted or unsubstituted alkoxy, anilino, aryl, alkyl or amido groups, and X is H or a coupling-off group; characteris...  
WO/1991/019224A2
Incorporation in a spectrally sensitized silver halide photographic element of a copolymer comprising repeating units of a methoxy- or ethoxy-containing acrylate or acrylamide and a different methoxy or ethoxy containing acrylate provide...  
WO/1991/018323A1
The combination of a magenta dye image-forming coupler, such as a phenylpyrazolone, with a substituted phenol in a photographic material provides an enhancement in the light stability of the resultant magenta image dye. The phenol has fo...  
WO/1991/018320A1
The invention is generally accomplished by providing a tabular-grain silver halide emulsion in which at least 50 percent of the total grain projected area is accounted for by tabular grains having a mean diameter of at least 0.6 micromet...  
WO/1991/017480A1
A method of preparing a coupler dispersion in gelatin by separating the auxiliary coupler solvent using a hydrophilic membrane having a pore size less than 175 Angstroms.  
WO/1991/017479A1
In a photographic process which includes a developer and an amplification bath, a photographic material is passed from the developer to the amplification bath and an absorbing agent is used to treat the amplification bath to remove any c...  
WO/1991/017481A1
A method of processing silver halide color photographic material comprising color developing, desilvering and water washing and/or stabilizing, wherein a photosensitive material which has at least one emulsion layer with a high silver ch...  
WO/1991/016666A1
A method of replenishing an unstable developer-amplifier solution comprising a colour developing agent and an oxidising agent in which the following replenisher solutions are employed: (1) a colour developer replenisher, (2) an oxidising...  
WO/1991/014970A1
Novel non-diffusible pyrazolo-[1,5-a] benzimidazole colour couplers having alkylene-, oxyalkylene- or arylene- thio coupling-off group, substituted with a carboxylic acid or dialkylamino group, have dye-forming and/or bleach-accelerating...  
WO/1991/014205A1
The invention resides in treating an image-wise exposed and colour developed photographic element with a bleaching agent and a fixing agent. The fixing agent comprises an aliphatic thiol as accelerator. The accelerator present in the fix...  
WO/1991/012567A1
A method of processing an imagewise exposed photographic material in a processing solution which is unstable to the extent that it deteriorates without external reaction in which said photographic material is passed through a tank contai...  
WO/1991/012566A1
A photographic silver halide emulsion comprises a dispersing medium and photographic silver haloiodide that (a) is a negative-working, core-shell silver haloiodide; (b) contains total iodide (I�t?) within the range of 0.5 to 8 mole per...  
WO/1991/011752A1
Provided is a multilayer, multicolor overlay proof comprising at least one precolored overlay image and at least one toned overlay image, as well as a process for preparing such an overlay proof.  
WO/1991/011751A1
The invention provides a bleach fix agent comprising a dilute solution of an alkaline metal or ammonium thiosulphite or a mixture thereof and iron (III) EDTA together with a soluble sulphite. The invention is characterised in that the so...  
WO/1991/011753A1
An environmentally advantageous photographic bleaching solution for use in the color processing of photographic elements comprises (1) as a bleaching agent, a potassium salt of a ferric complex of an aminopolycarboxylic acid, (2) as an a...  
WO/1991/011749A1
A colour photographic material comprising a support carrying at least one photographic silver halide emulsion layer having associated therewith a 5-, 7- or 8-chromanol image dye stabiliser.  
WO/1991/010938A1
A photosensitive silver chloride emulsion comprising at least 90 % silver chloride whose keeping properties have been improved by the incorporation therein of a bisphenol derivative having two linked phenol rings wherein the hydrogen ato...  
WO/1991/010940A1
An automatic film processing device replenishment system where an infra red sensor (6) is located to measure silver content of the image on a film or paper carrier, and use the measured silver content for control of replenishment of the ...  
WO/1991/010167A1
The present invention relates to a multilayer product for colour photography. The product is comprised of, under one of the layers or under each blue-sensitive layer, an intermediary layer including non photosensitive tabular silver halo...  
WO/1991/010168A1
The present invention relates to a multilayer product for color photography having improved sensitivity. The product comprises under one of the blue sensitized layers or under each blue sensitized layer, an intermediate layer comprising ...  
WO/1991/008516A1
The invention is accomplished by providing an aqueous dispersion of a photographic coupler by precipitation from a solvent solution by solvent and/or pH shift. A second aqueous dispersion of an activating permanent solvent for the photog...  
WO/1991/008515A1
A photosensitive photographic colour material suitable for processing in a colour developer free of benzyl alcohol comprising a support bearing a silver halide emulsion, the halide content of which is at least 85 % chloride, which contai...  
WO/1991/008517A1
A process for desilvering in the development of a photographic material and a composition used for this purpose, aiming at solving the problem encountered in using conventional fixers represented by thiosulfates and proposed substitutes ...  
WO/1991/007698A1
A method of processing a photographic silver halide colour negative film in which the colour developing solution is: (i) treated with an in-line ion-exchange resin to remove developer seasoning products, and (ii) replenished with a suffi...  
WO/1991/007699A1
A developer solution for colour paper is replenished without overflow. An in-line ion exchange resin system removes components which build up to an excessive concentration.  
WO/1991/006037A1
A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having...  
WO/1991/006038A1
There is described a process for recording a positive or negative continuous tone color copy having the same or lower contrast than a continuous tone original image, comprising the steps of: providing a photographic element comprising a ...  
WO/1991/005289A1
A rinse bath which is useful as the final bath in the processing of photographic color print materials comprises an aqueous solution containing (1) a polymer of vinyl pyrrolidone and (2) a polysiloxane surfactant. Preferably, the rinse b...  
WO/1991/003766A1
The present invention relates to a silver halide photographic transfer element (10, 50) which comprises a support (20) having a front and rear surface, a transfer coating (30) on the front of thesupport comprising a material capable of h...  
WO/1991/003005A1
A method of processing a photographic material comprising a support bearing at least one swellable layer which method comprises contacting the material with a processing solution containing a component which limits the swell of the layer...  
WO/1991/001984A1
The invention provides a method for the production of a pyrazolo(1,5-a)benzimidazole of general formula (A), wherein R is a substituted or unsubstituted alkyl or aryl group, and R1 - R4 = R, H, halogen, OR, COOR, CONHR, SO2, NO2NHR, NR2,...  
WO/1990/016013A1
Hollow silver halide grains and a process for their preparation are described. The hollow grains have high surface area/volume ratio and enhanced light absorption.  
WO/1990/016011A1
The invention is generally accomplished by utilization of a surfactant for very small particle photographic dispersions. Three types of such surfactants that have been identified are as follows: Type A: surfactant comprising 6 to 22 carb...  

Matches 251 - 300 out of 16,302