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WO/1992/021733A1 |
There is disclosed methods for fabricating electrophoretic displays (10). Essentially the methods employ selective materials such as different metals (15, 18, 19, 20) which are capable of being etched by different etchants. In this manne...
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WO/1992/020013A1 |
Purpose: An automatic developing apparatus for a silver halide photosensitive material, and more particularly an automatic developing apparatus, in which the automatic developing apparatus is made compact in size and the work efficiency ...
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WO/1992/015957A2 |
A method of predictably producing accurate photoprocessing reference image tool photographs to be used for adjusting the parameters of photographic devices, in which a first-generation camera-original image of a scene containing preselec...
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WO/1992/012463A1 |
The invention provides a method for reducing carryover reagents in the wet processing of a gelatin-based photographic material which method comprises causing the swellability of the gelatin layer in a first treatment bath to be reduced a...
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WO/1992/011208A1 |
A method of treating chemical liquid effluent to render it more environmentally acceptable, comprising the addition of hydrogen peroxide, or a compound capable of liberating hydrogen peroxide, to the effluent to react with and break down...
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WO/1992/009933A1 |
Radiant energy is directed from a source (14, 16) to an illumination plane (28) where the light receiving ends of groups (36) of optic fibers are arranged in coplanar striations (100), after which the radiant energy passes through the gr...
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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...
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WO/1992/008165A2 |
A photographic element including a light-sensitive layer and a transparent magnetic layer wherein the magnetic particles in the transparent binder are cobalt suface treated gamma iron oxide (Fe2O3) having a specific area of at least 30 m...
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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 ...
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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...
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WO/1992/004660A1 |
A method of treating photographic effluent by precipitating or otherwise removing harmful pollutants to provide an environmentally acceptable liquid phase and a disposable solid phase. The pollutants are removed from the effluent by the ...
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WO/1992/004659A1 |
A method for bleaching a silver image wherein the image is treated with a first solution comprising iodine and an iodide salt and then the iodine stain is removed by treating it with a second solution comprising ascorbic acid ans sulphit...
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WO/1992/001635A1 |
Anions containing sulfur and oxygen, e.g. thiosulfate, can be catalytically reduced using a protonated anion ion exchange resin as a catalyst. The process is preferably conducted in an aqueous system and at a pH below about 8.
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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...
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WO/1991/020015A1 |
In a method of forming a contrast mask of a photographic original (17) in a photochromic body (11) by illuminating the body through the original, the body (11) is associated with a surface (20) which reflects into the body (11) radiation...
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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...
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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...
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WO/1991/017478A1 |
The amount of retained developer in photographic material is reduced by subjecting a processing solution through which the material passes after development but before washing to the influence of an absorbing agent. The absorbing agent m...
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WO/1991/015806A1 |
The invention provides a chemical reaction system and an apparatus exemplified by a photographic process wherein a photo-sensitive paper substrate (5) is passed through a developing solution (2) contained in a main tank (1) and then thro...
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WO/1991/015805A1 |
A method and apparatus for preventing reproduction of printed matter on a substrate by photocopying, telefaxing and the like. A substrate is provided with at least one main surface and a photochromic dye is applied to the one main surfac...
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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...
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WO/1991/013834A1 |
A method and an apparatus for treatment of liquid wastes from photographic processes are described, in which the wastes to be treated are (a) subjected to an oxygen oxidation (3) as well as (b) an ozone oxidation (7), (c) optionally from...
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WO/1991/013383A1 |
It is often difficult to identify a particular frame in a film strip for reprinting. Described herein is a method for carrying out such identification using a reference frame number and incrementing/decrementing the frame numbers accordi...
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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...
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WO/1991/012564A1 |
A fixing bath and a method of fixing wherein the bath contains an imidazole compound that facilitates the removal of thiosulfate from the film in addition to reducing the presence of stain in the resulting film.
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WO/1991/012139A1 |
A process for imaging a film containing a reversible organic photochromic compound comprises exposing the film to UV light in one or more selected areas followed by treating it with a chemical reagent which reacts irreversibly with only ...
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WO/1991/012565A1 |
By using a method of removing silver in the form of sparingly soluble silver salt, especially silver sulfide, from a solution containing another silver compound, such as a silver thiosulfate complex in a photographic fix or rinsing fluid...
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WO/1991/012563A1 |
A radiation image storage panel includes a layer of transparent stimulable phosphor, a filter layer for strongly absorbing stimulating radiation and transmitting emitted radiation, and a radiation diffusing layer. The filter layer absorb...
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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...
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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...
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WO/1991/011750A1 |
A photographic element comprising a photosensitive layer, a flexible cellulose organic ester support film, and a substantially transparent magnetic recording layer having a dried thickness of less than about 1.5 micron exhibits improved ...
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WO/1991/011331A1 |
Several techniques for producing nonreplicable images. Images on mattes (M), particularly those of face value documents, and mattes are produced so as to acquire nonreplicable documents (10). Rendering of images as arrays of lineations (...
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WO/1991/010571A1 |
A process of imaging a film containing a photochromic compound, which is a fulgide or fulgimide that can reversibly be converted by UV light from a relatively colourless form to a coloured form, includes the step of exposing the film to ...
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WO/1991/010939A1 |
The invention provides an acid photographic fixing agent comprising a solution of an alkali metal thiosulphate or an ammonium thiosulphate or a mixture thereof stabilized by a soluble sulphite or bisulphite wherein the ratio by weight of...
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WO/1991/011011A1 |
A structure is proposed for intensifying the effect of X-ray radiation, particularly for industrial applications. It has first and second sides, the X-ray radiation (R) striking on the first side, the second side being arranged at the su...
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WO/1991/010166A1 |
Room light handleable direct reversal silver bromide emulsions, with up to 70 mole percent chloride, have a broad Dmin window when from 1 x 10?-6� to 1 x 10?-4� mole per silver mole of a polybromo coordination complex of iridium is i...
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WO/1991/009344A1 |
The invention is generally accomplished by providing a tabular silver halide emulsion formation process in which the pH is controlled to greater than 9 by the addition of an alkali base prior to digesting to form uniform nucleated silver...
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WO/1991/009145A2 |
Waste liquors containing small amounts of silver salts are treated with aluminum hydroxide to produce a floc reduced in volume by the addition of an acid and mixed with a metal bicarbonate and metal carbonate in amounts sufficient to aff...
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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 ...
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WO/1991/008514A1 |
It is known to replenish processing solutions in photographic processing apparatus in accordance with the throughput of material being processed. However, in low usage apparatus, there is no allowance for other losses which may occur, fo...
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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...
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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.
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WO/1991/006894A1 |
Methods and apparatus provided with selected nanoparticles that exhibit the plasmon resonance effect to enhance photoprocesses. In a first embodiment, such nanoparticles are used in a method of forming an integrated circuit; and in addit...
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WO/1991/006035A1 |
Light sensitive recording media such as a silver halide photographic emulsion (10) or an optical recording disk or plate (50a or 50b). The photographic emulsion comprises a colloid or gel (12), and a multitude of silver halide particles ...
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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 ...
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WO/1991/005882A1 |
A process is disclosed for recovering silver sulfide from a spent photographic fixer solution, which contains silver. The process is particularly suited for treating the fixer solution in a manner which enables recycling of the solution ...
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WO/1991/003765A1 |
Method for making direct-positive images comprising image-wise exposing a photographic light-sensitive silver halide material comprising a support and at least one internal latent image-type silver halide emulsion layer, and developing i...
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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...
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WO/1991/002290A1 |
A fixing process for photographic material comprises treatment with an alkali metal sulphite and a water soluble quaternary nitrogen compound.
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WO/1990/016015A1 |
A method of rapidly treating an ultrahigh-contrast negative photographic material used in a photomechanical process excellent in the reproduction of originals composed of characters or dots. The above material containing a development in...
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