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Patent Searching and Data


Matches 551 - 600 out of 17,009

Document Document Title
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/1991/012564A1
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.  
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 ...  
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...  
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...  
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/1991/011751A1
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/1991/011750A1
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 ...  
WO1991009145A3  
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 (...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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/1991/008514A1
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...  
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/1991/006894A1
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...  
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 ...  
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/1991/005882A1
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 ...  
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...  
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/1991/002290A1
A fixing process for photographic material comprises treatment with an alkali metal sulphite and a water soluble quaternary nitrogen compound.  
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...  
WO/1990/014615A1
Hydroxylamine compounds are commonly included in photographic color developing solutions to retard aerial oxidation. When the photographic element processed in the color developing solution is one which contains an aromatic polyhydroxy c...  
WO/1990/013061A1
A method of forming a dye image in a photographic silver halide element containing a dye-providing compound and having in a layer thereof an imagewise distribution of catalytic silver which comprises the step of treating the material wit...  
WO/1990/012898A1
A method of recovering silver from used photographic fixer solutions characterised in that the solution contains an alkali metal sulphite as the sole silver halide solvent.  
WO/1990/013060A1
A method of removing silver chloride from a photographic silver halide material during processing which comprises treatment with an aqueous solution containing an alkali metal sulphite as sole silver halide solvent.  
WO/1990/013059A1
A method of photographic processing employing a redox amplification solution containing hydrogen peroxide wherein the hydrogen peroxide is provided by the addition of a controlled weight of a solid compound which provides free hydrogen p...  
WO/1990/012342A1
A laser imaging material which can be effectively employed for color printing and proofing comprises a near infrared transparent support film which has a near infrared absorbing layer thereon. The absorbing layer contains at least one se...  
WO/1990/012343A1
Process for treatment of a photographic support comprising an image whitened after exposure, development and fixing in order to render said whitened image capable of being developed in daylight or in any other non-inactinic light, charac...  
WO/1990/009661A1
An erasable optical information storage apparatus is disclosed and the process for making such an apparatus is disclosed. The apparatus utilizes the photoabsorption and electrochemical absorption characteristics of the polyaniline class ...  
WO/1990/008979A1
In known photographic processing apparatus, quality of the photographs produced can be adversely affected by drift in the paper processor of the apparatus. One cause of drift is incorrect replenishment of the chemicals used in the paper ...  
WO/1990/008980A1
A three-part bleach-fix regeneration kit is utilized to restore the capability of a spent bleach-fix solution to function as a working solution in photographic processing. The first part, which is an aqueous alkaline solution containing ...  
WO/1990/007436A1
The cover (T) for sun visor mirrors of motor vehicles is comprised of various rigid laminar plates (1, 2; 7, 8, 9) which are superimposed and interleaved one after the other in continuous and linked succession so that in an open position...  
WO/1990/006582A1
The present invention refers to a structure for influencing the effect of X-ray or gamma radiation on a target sensitive to the radiation (R), having a first and a second side, the X-ray or gamma radiation (R) striking the first side, th...  
WO/1990/000266A1
A method for converting a continuous tone image on a transparency, negative into a halftone image includes the steps of providing a plurality of light-responsive elements (10) upon a surface, each element adapted to generate a local elec...  
WO/1989/007819A1
A document marking scheme which uniquely identifies each of a potentially large number of copies of a document. The marking is incorporated into the formatting of the document in such a way as to not significantly detract from the visual...  
WO/1989/006380A1
A process for bleaching a silver halide photographic material having a silver halide emulsion layer comprising at least one silver bromoiodide layer and having been subjected to color developement, which comprises conducting the bleachin...  
WO/1989/006381A1
A process for processing a silver halide photographic material having a silver halide emulsion layer comprising at least one silver iodide layer with a processing solution which can develop and fix the photographic material, which compri...  
WO/1989/006424A1
An optical head with a center axis (18) includes a grating coupler (8) formed on a circular region having its center coincident with the center axis (18), and the grating coupler (8) has concentric circular grooves or a spiral grove havi...  
WO/1989/005994A1
A method is provided for forming on a substrate an image-forming region which may be converted to a coloured from on exposure to U.V. light. The method comprises applying to the substrate a solution or dispersion comprising a 1,2-dihydro...  
WO/1989/004508A1
This invention relates to a method and apparatus for replenishing a processing fluid for performing processing such as development, bleaching, fixing, etc. of a photosensitive material which has been exposed to rays of light transmitting...  
WO/1989/004507A1
A negative pattern forming material for forming a desired pattern on a substrate with high accuracy and a method for forming a desired pattern on a substrate with high accuracy using the material are disclosed. The material contains as a...  
WO/1989/001187A1
A pattern-forming process utilizing radiation-induced graft polymerization reaction, which comprises conducting pattern formation using a resist capable of undergoing radiation-induced graft polymerization reaction and having excellent d...  
WO/1989/001220A1
The invention relates to an optical data recording method which comprises addressing a recording device using an infra-red laser modulated with a waveform of the information to be recorded, wherein said recording device comprises an infr...  

Matches 551 - 600 out of 17,009