Patents Assigned to Agfa-Gevaert
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Patent number: 5328804Abstract: Transfer images with high resolution are obtained with an image producing element containing a layer of a photopolymerisable composition with a monomer of Formula I by imagewise exposure and transfer of the unhardened parts of the photopolymerisable composition to an acceptor material. ##STR1## In Formula I A denotes a double-bonded or triple-bonded condensed urea group;X denotes O or NR in which R=C.sub.1 -C.sub.12 -alkyl;R.sup.1 denotes a double-bonded hydrocarbon group having 2 to 25 carbon atoms;R.sup.2 denotes a double-bonded to six-bonded linear or branched hydrocarbon group with 2 to 18 carbon atoms optionally interrupted by up to 3 O atoms;R.sup.3 denotes H or methyl;n denotes an integer from 1 to 5 andm stands for 2 or 3.Type: GrantFiled: August 20, 1992Date of Patent: July 12, 1994Assignee: Agfa Gevaert AktiengesellschaftInventors: Wolfgang Podszun, Michael Muller, Herman Uytterhoeven
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Patent number: 5327189Abstract: The invention relates to a device for developing photographic film bases with a plurality of treatment tanks to be passed through consecutively, which treatment tanks are connected by transfer devices and of which at least one contains a developing fluid suitable for developing copies of negatives. In front of this developing tank in the direction of processing, a further treatment tank is disposed, having a bath fluid for reverse developing. In addition to the inlet aperture, the reverse developing tank is provided with a further inlet aperture, at the end of a guide bridging the reverse developing tank, to the treatment tank adapted for copies of negatives.Type: GrantFiled: June 8, 1992Date of Patent: July 5, 1994Assignee: Agfa Gevaert AktiengesellschaftInventors: Ubbo Wernicke, Egon Bachem
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Patent number: 5326507Abstract: The process for manufacturing a polarizing film based on polyvinyl alcohol and at least one dichroic substance by casting or extrusion of a mixture of polyvinyl alcohol and a solvent, whereby the polyvinyl alcohol contains the dichroic substance, drying and stretching of the film by between 300 and 1200%, whereby, depending on the width of the unstretched film b.sub.o, a stretch gap l.sub.o is provided, satisfying the condition b.sub.o /l.sub.o <3, leads to higher dichroic extinction quotients.Type: GrantFiled: March 29, 1993Date of Patent: July 5, 1994Assignee: Agfa-Gevaert AGInventor: Karl-Heinz A. O. Starzewski
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Patent number: 5326676Abstract: Dye-donor element for use according to a laser-induced thermal dye transfer, said dye-donor element comprising a support having thereon a dye layer and an infrared-absorbing dye which is different from the dye in the dye-layer, characterized in that said infrared-absorbing dye is a 2-carbazoyl-4-[N-(o,o'-disubstituted, p-substituted aminoaryl)imino]-1,4-quinone or a 2-hydroxaminocarbonyl-4-[N-(o,o'-disubstituted,p-substituted aminoaryl)imino]1,4-quinone.Type: GrantFiled: March 31, 1993Date of Patent: July 5, 1994Assignee: AGFA-Gevaert, N.V.Inventors: Luc Vanmaele, Wilhelmus Janssens
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Patent number: 5326666Abstract: Dye-donor element for use according to thermal dye sublimation transfer, said dye-donor element comprising a support provided with a dye layer containing a dye dispersed in a polymeric binder, characterized in that said dye corresponds to the following formula (I) ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 independently represent hydrogen, halogen, nitro, an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, an aryloxy group, a alkylthio group, a arylthio group, an acylamino group, a sulfamoyl group, a carbamoyl group, which groups may be substituted, or R.sup.2 and R.sup.3 together can form a saturated or aromatic or heterocyclic ring fused-on the cyclohexadiene ring, which ring may be substituted;B represents ##STR2## wherein R.sup.4 -R.sup.11 are defined in the specification; K represents ##STR3## wherein: R.sup.12 and R.sup.13 (independently) represent hydrogen, an alkyl group, an aryl group, a heterocyclic group, which groups may be substituted, or R.sup.12 and R.sup.Type: GrantFiled: March 31, 1993Date of Patent: July 5, 1994Assignee: AGFA-Gevaert, N.V.Inventors: Luc Vanmaele, Wilhelmus Janssens
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Patent number: 5324601Abstract: Dye-donor element for use according to thermal dye transfer comprising at least one dye corresponding to the general formula (I): ##STR1## wherein Z is --CN, --COOR.sup.1 or --CONR.sup.2 R.sup.3 ; R.sup.1 is --H, (cyclo) alkyl, or aryl; R.sup.2 and R.sup.3 is --H, (cyclo)alkyl, aryl, or R.sup.2 and R.sup.3 together represent the atoms necessary to complete a heterocyclic nucleus; R.sup.4 and R.sup.5 is --H, (cyclo)alkyl, aryl, a heterocyclic ring, SO.sub.2 R.sup.8, COR.sup.8, CSR.sup.8, POR.sup.8 R.sup.9, OR.sup.6, NR.sup.6 R.sup.7, SR.sup.6, or R.sup.4 and R.sup.5 together represent the atoms necessary to complete a aliphatic ring, a heterocyclic ring including a heterocyclic ring carrying a fused-on aliphatic or aromatic ring; R.sup.6 and R.sup.7 is (cyclo)alkyl, aryl, alkenyl, aralkyl, aryl, a heterocyclic group, or R.sup.6 and R.sup.7 together represent the atoms necessary to complete a 5- or 6-membered ring; R.sup.8 and R.sup.Type: GrantFiled: March 22, 1993Date of Patent: June 28, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Luc Vanmaele, Hans Junek, Renate Dworczak
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Patent number: 5324706Abstract: Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side a dye layer and on the other side a heat-resistant layer, said support carrying on at least one side a subbing layer comprising a polyester formed by polycondensation of at least one aromatic dicarboxylic acid and at least one aliphatic diol, wherein said polyester is a copolyester further comprising units derived from at least one multifunctional comonomer carrying at least 3 functional groups, which may be same or different and are chosen from hydroxy and carboxy groups including so-called latent carboxy groups.Type: GrantFiled: February 23, 1993Date of Patent: June 28, 1994Assignee: AGFA-Gevaert, N.V.Inventors: Geert Defieuw, August Marien
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Patent number: 5324622Abstract: The present invention provides a photographic material comprising on a support (i) photosensitive silver halide particles, (ii) substantially light insensitive silver salt particles having a speed at least a factor 10 less than said photosensitive silver halide particles under the same conditions of exposure and development of said photosensitive silver halide particles and (iii) a releasing compound capable of image-wise releasing under the conditions for image-wise development of said photosensitive silver halide to silver a chemical sensitizer, said chemical sensitizer rendering said substantially light insensitive silver salt particles developable. The present invention also provides a method for making an image therewith and a method for making a lithographic printing plate.Type: GrantFiled: July 29, 1992Date of Patent: June 28, 1994Assignee: AGFA-Gevaert, N.V.Inventors: Ludo L. Van Rompuy, Jean-Marie O. Dewanckele, Jos A. Vaes, Marcel J. Monbaliu
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Patent number: 5322833Abstract: Dye-donor element for use according to thermal dye sublimation transfer, said dye-donor element comprising a support having on one side a dye layer and on the other side a heat-resistant layer provided with a topcoat layer, wherein said heat-resistant layer comprises an organic polymeric binder and the topcoat layer is obtained by coating a solution of at least one silicone compound and a substance, capable of forming during the coating procedure a polymer having an inorganic backbone which is an oxide of a group IVa or IVb element.Type: GrantFiled: December 11, 1992Date of Patent: June 21, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Geert Defieuw, Emiel Verdonck
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Patent number: 5319409Abstract: An arrangement for developing photographic sheet carriers in daylight operation has a closeable receiving container, a chamber with a plurality of treatment baths, an input table through which a sheet carrier is transported to the treatment baths, a transporting element for transporting the sheet carrier through the treatment baths, a drier supplying an air stream to the sheet carrier and having a suction, a light-tight ventilating device provided in the chamber with the treatment baths and located close to the input table, wherein the chamber with the treatment baths is connected with the suction side of the drier.Type: GrantFiled: July 10, 1992Date of Patent: June 7, 1994Assignee: Agfa-Gevaert AGInventors: Adolf Fleck, Horst Koninger
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Patent number: 5317000Abstract: A dye acceptor element for thermosublimation printing comprising a support and a dye acceptor layer containing a vinyl copolymer having a glass transition temperature of 50 to 100.degree. C. and a plasticizer having a molecular weight MW of 150 to 1,000 is distinguished by high color density, high sharpness, good image stability and a minimal tendency towards adhesion.Type: GrantFiled: July 2, 1992Date of Patent: May 31, 1994Assignee: AGFA-Gevaert AGInventors: Robert Bloodworth, Wolfgang Podszun, Geert Defieuw, Herman Uytterhoeven, Hans Schulze
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Patent number: 5314860Abstract: This invention relates to a method of stabilizing a material for use in a thermal dye transfer imaging process, characterized in that a compound satisfying the formula A-X wherein: A stands for acyl, and X stands for the conjugated base of an acid with a pKa.ltoreq.14, is included in the dye-donor element and/or in the receiving element for use in carrying out said process.Type: GrantFiled: January 16, 1992Date of Patent: May 24, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Luc J. Vanmaele, Wilhelmus Janssens
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Patent number: 5312711Abstract: A negatively-chargeable dry electrostatographic developer is disclosed containing fluorinated inorganic microparticles, and toner particles comprising an acidic binder resin having an acid value between 10 and 30 mg KOH/G and not comprising (a) charge-controlling agent(s). The developers according to this invention show excellent fluidity and have improved negative chargeability. According to a preferred mode, fluorinated silica-type microparticles are added to the developer as free flowing additive in an amount of 0.1 to 5% by weight with respect to the toner, which preferably comprises an acidic carbon black.Type: GrantFiled: July 16, 1991Date of Patent: May 17, 1994Assignee: AGFA-Gevaert, N.V.Inventors: Serge M. Tavernier, Paul F. Sterckx, Jean-Marie O. Dewanckele
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Patent number: 5312681Abstract: A sheet or web material comprising a hydrophobic resin support or paper support coated with at least one hydrophobic resin layer wherein said resin support or resin layer is coated with a transparent antistatic layer containing as an essential component a polythiophene with conjugated polymer backbone in the presence of a polymeric polyanion compound, characterized in that said antistatic layer is coated with an overlying adhering barrier layer applied from an aqueous polymer dispersion wherein the dispersed polymer has hydrophilic functionality sufficient to render said overlying layer adherent to a thereon coated hydrophilic colloid-containing layer.Type: GrantFiled: January 5, 1993Date of Patent: May 17, 1994Assignee: AGFA-Gevaert, N.V.Inventors: Bavo Muys, Friedrich Jonas
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Patent number: 5310719Abstract: Dye transfers of high color density, excellent sharpness and good stability are obtained in thermosublimation printing using a dye acceptor layer consisting essentially of a polyurethane formed by crosslinking and characterized in that the polyurethane contains at least 5% by weight urethane groups (--O--CO--NH--).Type: GrantFiled: March 12, 1992Date of Patent: May 10, 1994Assignee: AGFA-Gevaert AGInventors: Rolf Wehrmann, Geert Defieuw, Emil Verdonck, Herman Uytterhoeven, Rolf Dheim, Walter Schafer
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Patent number: 5310643Abstract: Compounds corresponding to Formula I are suitable as light stabilizers for the image dyes produced from colour couplers by chromogenic development. They are also suitable as oil formers for the colour couplers. In a colour photographic recording material, they are preferably used in combination with a pyrazoloazole coupler and associated with a light-sensitive silver halide emulsion layer. ##STR1## In Formula I, R.sup.1 denotes H, a group which can be split off under alkaline conditions, alkyl or aryl;R.sup.2 denotes OH, alkyl, aryl, alkoxy or ##STR2## R.sup.3, R.sup.4, R.sup.5 and R.sup.6 denote H, OH, COOH, SO.sub.3 H, SO.sub.2 H, alkyl, aryl, alkoxy, sulphonyl, sulphamoyl, acylamino or ##STR3## and at least one of the groups R.sup.2, R.sup.3, R.sup.4 R.sup.5 and R.sup.6 is a group of the formula ##STR4## A denotes an alkylene group having 1-6 carbon atoms, n stands for 0 or 1,R.sup.7 denotes H or an optionally substituted alkyl group,R.sup.Type: GrantFiled: October 28, 1992Date of Patent: May 10, 1994Assignee: Agfa Gevaert AktiangesellschaftInventors: Gunter Helling, Jorg Hagemann
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Patent number: 5308825Abstract: Thermal dye transfer printing method for obtaining high density black images comprising the steps of (1) imagewise heating a first area of a dye-donor element or a first dye-donor element comprising a support having thereon a dye layer containing a dye or a mixture of dyes thereby transferring a first dye image to a dye-receiving element comprising a support having thereon a dye image-receiving layer and (2) subsequently imagewise heating a second area of said dye-donor element or a second dye donor element thereby transferring in register with the first dye image a second dye image to said dye-receiving element wherein the superposition of the first transferred dye image and the second transferred dye image yield a black dye image, characterized in that the concentration of those essential composing dyes having a higher retransfer degree than the other essential composing dyes is higher in the second area or in the second dye-donor element than in the first area or first dye-donor element, and dye-donor elemType: GrantFiled: June 24, 1992Date of Patent: May 3, 1994Assignee: AGFA-Gevaert, N.V.Inventor: Geert H. Defieuw
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Patent number: 5308739Abstract: The present invention provides an imaging element comprising a support, a porous layer, a photosensitive layer containing a photopolymerizable composition and optionally a stripping layer characterized in that there is provided a barrier layer between said photosensitive layer and said porous layer said barrier layer being impermeable for the photopolymerizable composition at ambient temperature and capable of increasing its permeability with increasing temperature.Type: GrantFiled: February 8, 1993Date of Patent: May 3, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Herman Uytterhoeven, Luc Bastiaens
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Patent number: 5308736Abstract: Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side thereof a dye layer and containing a substituted di(hetero)aryl carbonate as thermal solvent.Type: GrantFiled: August 13, 1992Date of Patent: May 3, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Geert H. Defieuw, Herman J. Uytterhoeven, Rolf Wehrmann, Wolfgang Ebert
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Patent number: 5308738Abstract: The present invention provides a photographic material comprising on a support an image-receiving layer containing physical development nuclei, a photosensitive silver halide emulsion layer and a substantially light insensitive layer containing silver salt characterized in that said photosensitive silver halide emulsion layer contains silver halide particles having an average diameter of at least 0.6 .mu.m, said photosensitive silver halide emulsion layer being located between said image-receiving layer and said substantially light insensitive layer and said substantially light insensitive layer having a speed of at least a factor 10 less than said photosensitive silver halide emulsion layer. The present invention also provides a method for making an image therewith. The photographic material of the present invention is of high speed and can yield direct positive image with a low density in the non-image areas.Type: GrantFiled: June 5, 1992Date of Patent: May 3, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Rene M. De Keyzer, Johan J. Lamotte