Including Silver Transfer Image Toning Or Stabilizing, Or Separate Post Transfer Treatment Of Element Or Layer Containing Silver Image Patents (Class 430/248)
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Patent number: 12128376Abstract: A method for producing a silver-coated polymer microsphere includes admixing a polymer microsphere with a dipping solution containing water, a protic solvent, a tin compound, and hydrochloric acid and subsequently subjecting a resultant first mixture to ultrasonication so that a tin adsorption layer is formed on a surface of the polymer microsphere, immersing the polymer microsphere having the tin adsorption layer in a silver complex solution to obtain a second mixture, diluting the second mixture with water to form a diluted second mixture, and dropping a reducing solution into the diluted second mixture, so that a silver coating layer is formed on a surface of the tin adsorption layer of the polymer microsphere.Type: GrantFiled: November 15, 2022Date of Patent: October 29, 2024Assignee: MK HIGH TECHNOLOGY JOINT STOCK COMPANYInventors: Khang Trong Nguyen, Thuat Tran Nguyen
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Patent number: 7118836Abstract: A substantially transparent conductive layer on a support, the layer comprising an intrinsically conductive polymer e.g. containing an intrinsically conductive polymer optionally containing structural units represented by formula (I): wherein n is larger than 1 and each of R1 and R2 independently represents hydrogen or an optionally substituted C1-4 alkyl group or together represent an optionally substituted C1-4 alkylene group or an optionally substituted cycloalkylene group, preferably an ethylene group, an optionally alkyl-substituted methylene group, an optionally C1-12 alkyl- or phenyl-substituted ethylene group, a 1,3-propylene group or a 1,2-cyclohexylene group; and a conductive metal non-uniformly distributed therein and forming of itself a conductive entity; a process for preparing the transparently conductive layer; and light emitting diodes, photovoltaic devices, transistors and electroluminescent devices comprising the above-described conductive layer.Type: GrantFiled: August 19, 2003Date of Patent: October 10, 2006Assignee: Agfa GevaertInventor: Hieronymus Andriessen
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Patent number: 7026079Abstract: A process for preparing a substantially transparent conductive layer configuration on a support, the layer configuration comprising in any order at least a first layer containing an intrinsically conductive polymer optionally containing structural units represented by formula (I): wherein n is larger than 1 and each of R1 and R2 independently represents hydrogen or an optionally substituted C1-4 alkyl group or together represent an optionally substituted C1-4 alkylene group or an optionally substituted cycloalkylene group, preferably an ethylene group, an optionally alkyl-substituted methylene group, an optionally C1-12 alkyl- or phenyl-substituted ethylene group, a 1,3-propylene group or a 1,2-cyclohexylene group; and a second layer consisting of a non-continuous layer of conductive silver, the process comprising the step of: preparing the second layer by a photographic process; and light emitting diodes, photovoltaic devices, transistors and electroluminescent devices comprising a layer configuration prType: GrantFiled: August 21, 2003Date of Patent: April 11, 2006Assignee: AGFA GevaertInventors: Frank Louwet, Tom Cloots, Hieronymus Andriessen
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Patent number: 6579656Abstract: A photographic film with a polymeric acid-reacting neutralizing layer comprising a half ester of isobutylene/maleic anhydride copolymer is provided herein. This polymeric acid-reacting neutralizing layer is used to attenuate a photographic film's development process, which is effective under alkali conditions, by lowering the pH of the alkaline processing composition.Type: GrantFiled: June 29, 2001Date of Patent: June 17, 2003Assignee: Polaroid CorporationInventors: Agota F. Fehervari, William L. Grimm
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Patent number: 6303262Abstract: Disclosed are a photomask material for preparing a photomask having excellent heat resistance, ultraviolet resistance and image strength, a photomask having the above properties and methods for the production thereof, and the present invention provides a photomask material, which comprises a glass substrate, a physical development nucleus layer and a photosensitive layer containing silver halide, the layers being consecutively formed on the transparent substrate, and a method for the production thereof, and a photomask, which comprises a transparent substrate, a physical development nucleus layer and a light shielding film formed of a predetermined pattern of a silver film derived from silver halide, the silver film being formed by the action of the physical development nucleus in said layer during development treatment, the physical development nucleus layer and the light shielding film being consecutively formed on the transparent substrate, and a method for the production thereof.Type: GrantFiled: June 17, 1999Date of Patent: October 16, 2001Assignee: Mitsubishi Paper Mills Ltd.Inventors: Kazuchiyo Takaoka, Noriyuki Kawai, Kenji Hyodo
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Patent number: 6120971Abstract: There is disclosed an aluminum lithographic printing plate material which comprises an aluminum substrate, a silver halide emulsion layer and a physical development nuclei layer between the aluminum substrate and the silver halide emulsion layer, said silver halide emulsion layer contains photographic gelatin and gelatin having a weight average molecular weight of about 50,000 or less is contained in said silver halide emulsion layer and/or under said layer.Type: GrantFiled: July 27, 1998Date of Patent: September 19, 2000Assignee: Mitsubishi Paper Mills LimitedInventors: Motozo Yamano, Kunihiro Nakagawa, Toshiro Kondo
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Patent number: 6060209Abstract: There is disclosed a process for making a lithographic printing plate having physical development nuclei between an aluminum support and a silver halide emulsion layer to which, after exposure, a treatment using at least a developing solution, a washing solution and a finishing solution is applied in this order,the improvement wherein at least one of the above processing solutions contains at least one compound selected from the groups (A) and (B) mentioned below:(A) at least one compound selected from the group consisting of an amine compound having a propyleneoxy group and an ethyleneoxy group, an aliphatic acid amide compound having a propyleneoxy group and an ethyleneoxy group, and a quaternary ammonium compound having a propyleneoxy group and an ethyleneoxy group; and(B) at least one compound selected from the group consisting of urea and a derivative thereof.Type: GrantFiled: November 24, 1998Date of Patent: May 9, 2000Inventors: Toshiro Kondo, Hajime Fujioka, Yoshihito Ohashi
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Patent number: 6010818Abstract: The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process comprising the steps of:image-wise exposing an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei and (ii) a photosensitive layer comprising a photosensitive silver halide emulsion said photosensitive layer being in water permeable relationship with said image receiving layer,applying an aqueous alkaline solution to the imaging element in the presence of (a) developing agent(s) and (a) silver halide solvent(s) to form a silver image in said image receiving layer,treating the imaging element with a first lithographic finisher in order to remove the layer(s) on top of the image receiving layer, thereby exposing the imaged surface of the support by uncovering said silver image formed in said image receiving layer,treating said exposed imaged surface of the support with a second lithoType: GrantFiled: May 19, 1998Date of Patent: January 4, 2000Assignee: AGFA-Gevaert, N.V.Inventors: Paul Coppens, Ludo Vervloet
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Patent number: 6004718Abstract: A transfer material colored to a predetermined color is used when images are formed on a transfer material for use in thermal transfer comprising a substrate and a dye receiving layer by a thermal transfer process.When images are formed by an optional image forming method such as silver salt photographic process, ink jet process or thermal transfer process, a transfer material having sepia tone is used in each of the image forming processes thereby forming sepia tone images. Images having unique appearance can be formed easily upon forming images by a thermal transfer process. Images of sepia tone can be formed safely and conveniently.Type: GrantFiled: April 1, 1999Date of Patent: December 21, 1999Assignee: Sony CorporationInventor: Satoru Shinohara
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Patent number: 5968707Abstract: A transfer material colored to a predetermined color is used when images are formed on a transfer material for use in thermal transfer comprising a substrate and a dye receiving layer by a thermal transfer process.When images are formed by an optional image forming method such as silver salt photographic process, ink jet process or thermal transfer process, a transfer material having sepia tone is used in each of the image forming processes thereby forming sepia tone images. Images having unique appearance can be formed easily upon forming images by a thermal transfer process. Images of sepia tone can be formed safely and conveniently.Type: GrantFiled: July 14, 1998Date of Patent: October 19, 1999Assignee: Sony CorporationInventor: Satoru Shinohara
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Patent number: 5910391Abstract: Disclosed is a process for making a lithographic printing plate, which comprises subjecting a lithographic printing material having physical development nuclei between an aluminum support and a silver halide emulsion layer to exposure and then processing the lithographic printing material at least with a developing solution, a water washing solution and a finishing solution in this order, wherein the processing with the water washing solution is carried out by using a water washing solution containing a compound having a mercapto group or a thione group.Type: GrantFiled: August 6, 1997Date of Patent: June 8, 1999Assignee: Mitsubishi Paper Mills LimitedInventors: Toshiro Kondo, Yutaka Araki, Hajime Fujioka, Makiko Oko
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Patent number: 5853950Abstract: Disclosed is a process for making a lithographic printing plate by subjecting a lithographic printing material having physical development nuclei between an aluminum support and a silver halide emulsion layer to exposure and then processing the lithographic printing material at least with a developing solution and a water washing solution in this order, which comprises performing the processing(s) with the developing solution and/or the water washing solution by using the developing solution and/or the water washing solution containing an organic compound which coagulates gelatin.Type: GrantFiled: September 26, 1997Date of Patent: December 29, 1998Assignee: Mitsubishi Paper Mills LimitedInventors: Toshiro Kondo, Makiko Oko, Yutaka Araki, Hajime Fujioka
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Patent number: 5851723Abstract: Disclosed is a process for making a lithographic printing plate which utilizes the silver complex diffusion transfer process by subjecting the lithographic printing plate to exposure and then development processing and optionally stabilizing processing, which comprises performing the development processing/the stabilizing processing by using a developing solution/a stabilizing solution each containing a monothioether compound containing succinic acid, a salt thereof or a derivative thereof.Type: GrantFiled: August 19, 1997Date of Patent: December 22, 1998Assignee: Mitsubishi Paper Mills LimitedInventor: Toshiro Kondo
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Patent number: 5851720Abstract: A transfer material colored to a predetermined color is used when images are formed on a transfer material for use in thermal transfer comprising a substrate and a dye receiving layer by a thermal transfer process.When images are formed by an optional image forming method such as silver salt photographic process, ink jet process or thermal transfer process, a transfer material having sepia tone is used in each of the image forming processes thereby forming sepia tone images. Images having unique appearance can be formed easily upon forming images by a thermal transfer process. Images of sepia tone can be formed safely and conveniently.Type: GrantFiled: November 12, 1996Date of Patent: December 22, 1998Assignee: Sony CorporationInventor: Satoru Shinohara
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Patent number: 5763137Abstract: The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process comprising the steps of:image-wise exposing an imaging element comprising on a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei,developing said imaging element in the presence of developing agent(s) and silver halide solvent(s) using an alkaline processing liquid andneutralizing a thus obtained developed imaging element using a neutralization solution having a pH between 4 and 10.5 and comprising a hydrophobizing agent and a buffer characterized in that said neutralization solution comprises a salt of sulfurous acid.Type: GrantFiled: July 29, 1996Date of Patent: June 9, 1998Assignee: Agfa-Gevaert, N.V.Inventors: Lode Deprez, Jos Vaes
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Patent number: 5756252Abstract: The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process comprising the steps of:image-wise exposing an imaging element comprising on a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei,developing said imaging element in the presence of at least one developing agent and at least one silver halide solvent using an alkaline processing liquid andneutralizing a thus obtained developed imaging element using a neutralization solution having a pH between 4 and 10.5 and comprising a buffer characterized in that said neutralization solution comprises 2-methyl-3(2H)-isothiazolone.Type: GrantFiled: June 30, 1997Date of Patent: May 26, 1998Assignee: AGFA-Gevaert, N.V.Inventor: Lode Deprez
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Patent number: 5756253Abstract: There are described novel photographic processing compositions, film units and processes for use in diffusion transfer photographic systems. More particularly, there is described a method for forming a diffusion transfer image photographic processing of diffusion transfer photographic film units in the presence of hypoxanthine and inosine. Diffusion transfer photographic systems utilizing the novel photographic element or method of the present invention exhibit substantially fewer, if any, crystals on the final image of the finished photograph post-processing.Type: GrantFiled: July 9, 1997Date of Patent: May 26, 1998Assignee: Polaroid CorporationInventors: Robert D. Eckert, Michael P. Filosa, Gerard Gomes, Anthony R. Layne, Marlene C. Schwarz, Lloyd D. Taylor
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Patent number: 5738969Abstract: Disclosed is a process for treating a plate surface of a lithographic printing plate, which comprises, after exposing and developing a lithographic printing plate having a support and at least a silver halide emulsion layer and a physical development nuclei layer provided on the support, treating the plate surface of the lithographic printing plate with a plate surface-treating solution containing at least one water-insoluble compound having a mercapto group or a thione group and a compound represented by the following formula (1): ##STR1## wherein A represents a vinyl monomer unit having a carboxyl group, B represents a copolymerizable ethylenic unsaturated monomer unit, M represents a cation, k represents 30 to 90 mole %, m represents 10 to 50 mole %, and n represents 0 to 50 mole %.Type: GrantFiled: March 7, 1997Date of Patent: April 14, 1998Assignee: Mitsubishi Paper Mills LimitedInventors: Hiroyuki Kurokawa, Toshiro Kondo, Yutaka Araki
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Patent number: 5712076Abstract: The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing one or more silver halide emulsions being in water permeable relationship with said image receiving layer, characterized in that said one or more silver halide emulsions comprise substantially no silver bromide and that said imaging element comprises on top of said photosensitive layer an antistress layer, being in water permeable relationship with said photosensitive layer and comprising an unhardened gelatin in an amount ranging from 0.60 to 1.75 g/m.sup.2.Type: GrantFiled: October 29, 1996Date of Patent: January 27, 1998Assignee: AGFA-Gevaert, N.V.Inventors: Paul Coppens, Bartholomeus Van Der Linden, Rene De Keyzer
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Patent number: 5677104Abstract: An image formation method is described, which comprises overlaying a silver halide light-sensitive material with a sheet after or during imagewise exposure, the light-sensitive material comprising a support having provided thereon at least a light-sensitive silver halide mainly comprising silver chloride, a hydrophilic binder, a reducing agent and a slightly water-soluble basic metal compound, the sheet comprising a support having provided thereon at least a compound forming a complex with a metal ion constituting said basic metal compound, a physical development nucleus, and a compound represented by the following formula (I) or a compound containing a sulfite ion; and heat-developing the material in the presence of water to form a silver image on at least one of the light-sensitive material and the sheet: ##STR1## wherein Q represents an atomic group necessary to form a 5- or 6-membered imide ring.Type: GrantFiled: December 27, 1995Date of Patent: October 14, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Hiroshi Hara, Kiyoteru Miyake
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Patent number: 5665515Abstract: The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process using a photographic material comprising on a support a silver halide emulsion layer and a layer containing physical development nuclei comprising the steps of:image-wise exposing said photographic material;developing a thus obtained image-wise exposed photographic material by guiding said image-wise exposed photographic material through an alkaline processing liquid comprising a hydrophobizing agent, in 15s or less andsubsequently guiding a thus obtained developed photographic material through a stabilizing liquid;characterized in that said stabilizing liquid comprises a compound having a mercapto-group having a pK.sub.a of 4.5 or less.Type: GrantFiled: October 18, 1995Date of Patent: September 9, 1997Assignee: Agfa-Gevaert N.V.Inventors: Lode Deprez, Marcel Monbaliu, Jean-Marie Dewanckele
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Patent number: 5635330Abstract: The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process comprising the steps of exposing and developing an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer and (ii) a photosensitive layer comprising a photosensitive silver halide emulsion, removing the layer(s) on top of the image receiving layer thereby exposing the imaged surface of the support and treating said exposed imaged surface of the support with a finisher having a temperature between 30.degree. C. and 60.degree. C.Type: GrantFiled: March 10, 1995Date of Patent: June 3, 1997Assignee: Agfa-Gevaert, N.V.Inventors: Paul Coppens, Ludovicus Vervloet
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Patent number: 5624783Abstract: The present invention provides an imaging element comprising on one side of a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei in water permeable relationship with said emulsion layer and on the other side of the support at least one backing layer comprising gelatin and a dye and/or a dye precursor characterized in that said dye or dye precursor is such that after treatment of said imaging element in an alkaline solution with a pH of 10.9 for 20 s at a temperature of 30.degree. C. the backing layer has a reflection spectrum when treated for 20 s at 20.degree. C. in a neutralizing solution with a pH of 7.5 that is visually different from the reflection spectrum when treated for 20 s at 20.degree. C. in a neutralizing solution with a pH of 8.5.Type: GrantFiled: April 8, 1996Date of Patent: April 29, 1997Assignee: Agfa-Gevaert, N.V.Inventors: Lode Deprez, Eric Kiekens
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Patent number: 5620830Abstract: The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iii) an antistress composition in water permeable relationship with said image receiving layer, said antistress composition comprising unhardened gelatin in an amount ranging from 0.60 to 1.75 g/m.sup.2, characterized in that at least 50% by weight of said unhardened gelatin belongs to one or more gelatin species whereof a 10% by weight aqueous solution at 36.degree. C. and pH 6 has a viscosity lower than 35 mPa.s at a shearing rate of 1000 s.sup.-1.Type: GrantFiled: April 9, 1996Date of Patent: April 15, 1997Assignee: AGFA-Gevaert, N.V.Inventors: Paul Coppens, Eric Hoes, Ren e De Keyzer, Bart Van der Linden
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Patent number: 5618652Abstract: An image formation method by silver salt diffusion transfer is described, which comprises subjecting a photosensitive element containing at least one photosensitive silver halide emulsion layer to image exposure, then developing the photosensitive element by use of an alkali processing composition containing a solvent for a silver halide to turn at least a part of unexposed silver halide of the photosensitive silver halide emulsion layer into a transferable silver complex salt, transferring at least a part of the transferable complex salt to a silver precipitating nucleus-containing image receiving layer to form an image on the silver precipitating nucleus-containing image receiving layer, and separating the silver precipitating nucleus-containing image receiving layer from the photosensitive element after image formation to obtain the image, wherein the image is formed in the presence of at least one compound represented by the following formula (I) and at least one compound represented by the following formType: GrantFiled: March 14, 1996Date of Patent: April 8, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Hisashi Okada, Kazumi Nii
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Patent number: 5593809Abstract: There are described a diffusion transfer photographic film unit of the type wherein an image-receiving element is designed to be separated from a photosensitive element after photoexposure and processing and a photographic process which utilizes the film unit. The photographic film unit comprises a photosensitive element including a support carrying at least one silver halide emulsion, an image-receiving element comprising a support, an image-receiving layer and, optionally, an overcoat layer and/or a strip-coat layer. At least one of the image-receiving layer, overcoat layer or strip-coat layer includes a "crosslinkable material" which is crosslinked during processing. The film unit further includes means for providing an aqueous alkaline processing composition to the photosensitive element and the image-receiving element for developing an image. The aqueous alkaline processing composition includes a borate compound for crosslinking the crosslinkable material of the image-receiving element during processing.Type: GrantFiled: December 7, 1995Date of Patent: January 14, 1997Assignee: Polaroid CorporationInventors: Gia Y. Kim, Lloyd D. Taylor, Kenneth C. Waterman
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Patent number: 5578415Abstract: An optical recording material comprising: a thin film or membrane of a hydrophobic binding agent; and metallic particles having a diameter of 0.003 .mu.m to 3 .mu.m dispersed in said film or membrane wherein the density of said metallic particles is higher near at least one surface of said film or membrane as compared with another portion of said film or membrane, each metallic particle having a nucleus and an outer coating, said outer coating consisting of at least one metal having a melting point of 250.degree. C. to 1800.degree. C. and a thermal conductivity at 0.degree. C. of 5 W.multidot.m.sup.-1 .multidot.K.sup.-1 to 450 W.multidot.m.sup.-1 .multidot.K.sup.-1 wherein the reflectivity of the surface of said film or membrane where the density of said metallic particle is higher is 10 to 90%., a method for preparing the optical recording material and an optical card containing the optical recording material.Type: GrantFiled: January 31, 1994Date of Patent: November 26, 1996Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Yoshio Hayashi, Shuichiro Ogawa, Junichi Iwata
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Patent number: 5561027Abstract: A method and apparatus for making an offset printing plate according to the silver salt diffusion transfer process comprises the step of washing the imaging element by applying a curtain of an aqueous medium onto the surface of the element at its silver halide emulsion layer side, across the width of the element, substantially transverse to its processing direction, and in countercurrent to the processing direction of the element.Type: GrantFiled: May 11, 1995Date of Patent: October 1, 1996Assignee: AGFA-GEVAERT N.V.Inventors: Bartholomeus Verlinden, Bert Vackier, Jan Claes, Bart Verhoest
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Patent number: 5554483Abstract: There is disclosed a photographic image including an ink-acceptable surface thereon. The photographic image may be formed by known conventional or diffusion transfer techniques. The ink-acceptable surface is formed by applying an aqueous mixture of a polymeric mordant material over the photograph and forming a relatively clear dry coating thereon. The subject coating provides an ink-acceptable surface upon the photograph which accepts and retains ink applied thereto and resist the remove of such ink therefrom.Type: GrantFiled: December 13, 1995Date of Patent: September 10, 1996Assignee: Polaroid CorporationInventors: Thomas G. DeNoto, Paul E. Nangeroni, David F. Oberhauser
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Patent number: 5536617Abstract: The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process comprising the steps of:image-wise exposing an imaging element comprising on a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei,developing said imaging element in the presence of developing agent(s) and silver halide solvent(s) using an alkaline processing liquid andtreating the thus obtained developed imaging element using a finishing liquid having a pH of at least 8.5 being substantially free of oxidizing compounds.Less useless copies are generated at the start of the printing process using a printing plate obtained according to the method of the present invention.Type: GrantFiled: September 12, 1994Date of Patent: July 16, 1996Assignee: AGFA-Gevaert, N.V.Inventor: Deprez Lode
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Patent number: 5525455Abstract: The present invention provides a treating solution for lithographic printing plates having ink receptive silver images in which the compound having a mercapto group or a thione group and an oleophilic group which is added to improve ink-receptivity can be solubilized without damaging the ink-receptivity and with using no solvent and in which hydrophilic colloid particles are excellent in time stability. The solution contains at least one alkanolamine and a compound having a mercapto group or a thione group and an oleophilic group and being free from sulfo group and carboxyl group. Preferably, the solution additionally contains an amino acid and hydrophilic colloid particles which are inorganic fine particles having an average particle size of 0.1 .mu.m or less.Type: GrantFiled: January 27, 1995Date of Patent: June 11, 1996Assignee: Mitsubishi Paper Mills LimitedInventors: Hiroyuki Kurokawa, Kazuhiko Ibaraki, Jun Urasaki, Akio Yoshida
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Patent number: 5518866Abstract: The present invention provides a finisher comprising (a) hydrophobizing agent(s) in a total concentration between 0.1 g/l and 10 g/l, (a) surface-active compound(s) and (a) polyglycol(s), characterized in that said polyglycol(s) comprise(s) at least 50% by weight ethyleneoxide groups and/or propyleneoxide groups whose total sum is at least 7 and is (are) present in said finisher in a total amount of at least 10 g/l and there is further provided a method for making an offset printing plate according to the silver salt diffusion transfer process therewith.Type: GrantFiled: March 10, 1995Date of Patent: May 21, 1996Assignee: Agfa-Gevaert, N.V.Inventors: Paul Coppens, Ludovicus Vervloet
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Patent number: 5512412Abstract: The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process comprising the steps of:image-wise exposing an imaging element comprising on a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei,developing said imaging element in the presence of developing agent(s) and silver halide solvent(s) using an alkaline processing liquid andneutralizing a thus obtained developed imaging element using a neutralization liquid having a pH between 5 and 7 characterized in that said neutralization liquid contains a total concentration of phosphate ions between 0.2 mol/l and 0.4 mol/l.Type: GrantFiled: December 20, 1994Date of Patent: April 30, 1996Assignee: AGFA-Gevaert, N.V.Inventors: Jos Vaes, Luc Wabbes
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Patent number: 5508142Abstract: The present invention provides an imaging element comprising in the order given (i) a hydrophilic base, (ii) an image receiving layer containing physical development nuclei and (iii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer, characterized in that said photosensitive layer or another optional layer being in water permeable relationship therewith contains at least one gelatin species whereof a 10% by weight aqueous solution at 36.degree. C. and pH 6 has a viscosity lower than 20 mPa.s at a shearing rate of 1000 s.sup.-1.Type: GrantFiled: June 29, 1994Date of Patent: April 16, 1996Assignee: AGFA-GEVAERT, N.V.Inventors: Paul Coppens, Eric Hoes, Ludovicus Vervloet
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Patent number: 5496679Abstract: The present invention provides an imaging element comprising on a flexible hydrophobic support (i) a hardened hydrophilic layer, containing a hydrophilic synthetic homocopolymer or copolymer and being hardened with a hydrolyzed tetraalkyl orthosilicate crosslinking agent, (ii) a receiving layer containing physical development nuclei contiguous to said hydrophilic layer, (iii) an intermediate layer comprising a non-proteinic hydrophilic film-forming polymer or hydrophobic polymer beads having an average diameter not lower than 0.2 .mu.m and having been prepared by polymerization of a ethylenically unsaturated monomer and (iv) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said receiving layer. The invention also relates to a method for making lithographic plates with said imaging element.Type: GrantFiled: March 22, 1995Date of Patent: March 5, 1996Assignee: AGFA-Gevaert, N.V.Inventors: Guido Hauquier, Willem Cortens, Paul Coppens, Ludovicus Vervloet
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Patent number: 5449585Abstract: The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process having improved printing properties comprising the step of developing an imaging element comprising in the order given (i) a hydrophilic base, (ii) an image receiving layer containing physical development nuclei and (iii) a photosensitive layer containing a silver halide emulsion in the presence of a 1-phenyl-5-mercapto-tetrazole, being substituted by one or two substituents from the group consisting of:(i) a --COOM group with M representing hydrogen, a metal cation, or an ammonium group,(ii) a --SO.sub.3 M.sup.1 group, M.sup.1 representing hydrogen, a metal cation, or an ammonium group,(iii) an acylamido group,(iv) and a substituent containing at least one of the aforementioned substituents (i)-(iv).Type: GrantFiled: June 29, 1994Date of Patent: September 12, 1995Assignee: Agfa-GevaertInventors: Paul Coppens, Ludovicus Vervloet, Eric Hoes
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Patent number: 5445914Abstract: The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process using rinsing water, characterized in that alkali is added to said rinsing water before washing at most 20 m.sup.2 of said exposed and developed imaging element and/or before being in use for more than 24 hours in such an amount that a pH in said washing water between 10.5 and 13 is obtained.Type: GrantFiled: February 1, 1994Date of Patent: August 29, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Paul Coppens, Augustin Meisters, Ludovicus Vervloet
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Patent number: 5436119Abstract: The present invention provides a conversion liquid for converting silver areas of a silver based printing plate into ink repellant areas while rendering background areas of said silver based printing plate ink accepting, said conversion liquid comprising a hydrophobizing compound capable of adsorbing to said hydrophilic background areas and a hydrophilizing compound capable of adsorbing to said silver areas and/or a bleaching compound capable of oxidizing the silver in said silver based printing plate.Type: GrantFiled: May 5, 1994Date of Patent: July 25, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Franciscus Heugebaert, Gilbert Voortmans, Jean-Marie Dewanckele, Johan Loccufier
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Patent number: 5432042Abstract: The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process using a photographic material comprising on a support a silver halide emulsion layer and a layer containing physical development nuclei comprising the steps of:image-wise exposing said photographic material anddeveloping a thus obtained image-wise exposed photographic material by guiding said image-wise exposed photographic material through an alkaline processing liquid in 15 s or less; characterized in that said alkaline processing liquid comprises a hydrophobizing compound having a mercapto group that has a pK.sub.a of 4.5 or less.Type: GrantFiled: May 25, 1994Date of Patent: July 11, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Lode Deprez, Jos Vaes, Paul Gestels
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Patent number: 5405729Abstract: The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process using rinsing water, characterized in that said rinsing water before washing at most 20 m.sup.2 of said exposed and developed imaging element and/or before being in use for more than 24 hours is brought in contact with (i) a metal of the group IB or IIB or VIII of the periodic table or (ii) with an alloy containing at least one of said metals or (iii) with a salt containing an ion of at least one of said metals.Type: GrantFiled: February 1, 1994Date of Patent: April 11, 1995Assignee: AGFA-Gevaert, N.V.Inventors: Paul Coppens, Ludovicus Vervloet, Augustin Meisters, Jean-Pierre Tahon
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Patent number: 5340691Abstract: The present invention provides a method for making a lithographic printing plate accordig to the silver salt diffusion transfer process comprising the steps of:image-wise exposing an imaging element comprising on a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei,developing said imaging element in the presence of developing agent(s) and silver halide solvent(s) using an alkaline processing liquid andneutralizing the thus obtained developed imaging element using a neutralization liquid characterized in that said neutralization liquid contains a meso-ionic compound.Type: GrantFiled: September 29, 1993Date of Patent: August 23, 1994Assignee: AGFA-Gevaert, N.V.Inventors: Jos Vaes, Jean-Marie Dewanckele, Marcel Monbaliu
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Patent number: 5340692Abstract: The present invention provides an image receiving material comprising on a support an image receiving layer containing physical development nuclei characterised in that said image receiving material contains a nacreous pigment in said image receiving layer and/or in an optional layer between said support and said image receiving layer. Excellent contone images with an antique look can be obtained with such an image receiving material in a silver salt diffusion transfer process.Type: GrantFiled: September 13, 1993Date of Patent: August 23, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Leon Vermeulen, Robert Pauwels
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Patent number: 5290661Abstract: A method for sorting images by silver salt diffusion transfer comprisingimagewise exposing a light-sensitive element comprising a light-sensitive silver halide emulsion layer,developing the light-sensitive element in the presence of a silver halide solvent using an alkaline processing composition to turn at least a part of unexposed silver halide of the light-sensitive silver halide emulsion layer into a transfer silver halide complex salt, andtransferring at least a part of the silver halide complex salt to an image receiving layer comprising a silver precipitating agent to form images on the image receiving layer,wherein at least one compound represented by formula (I) is added to at least one of the light-sensitive element, an image receiving element comprising the image receiving layer, and the processing composition in an amount of at least 1.times.10.sup.-6 and less than 1.times.10.sup.-2 mol based on one mol of silver applied per unit area (m.sup.Type: GrantFiled: July 29, 1992Date of Patent: March 1, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshio Idota, Makoto Ishihara, Morio Yagihara
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Patent number: 5283157Abstract: A method for making a lithographic printing plate which comprises the steps of A) imagewise exposing a light sensitive material which comprises a support, a negative working silver halide emulsion layer and a surface physical development nucleating layer on said support, and B) processing the exposed material in a silver complex diffusion transfer developer containing a water soluble iodide to produce a non-black oleophilic silver image on the surface of said printing plate.Type: GrantFiled: March 22, 1993Date of Patent: February 1, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventor: Paul Davies
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Patent number: 5273858Abstract: Method for making lithographic aluminum offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminum foil, an intermediate layer comprising hydrophobic polymer beads prepared by polymerization of ethylenically unsaturated monomer(s) and having an average diameter not lower than 0.2 .mu.m, and a silver halide emulsion layer, applying an aqueous alkaline solution to the photo-exposed silver halide emulsion layer in the presence of a developing agent and a silver halide solvent to form a silver image and to allow unreduced silver halide or complexes formed thereof to diffuse imagewise from the developed silver halide emulsion layer to said aluminum foil to produce thereon a silver image, and separating said emulsion layer and said intermediate layer from the imaged aluminum foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.Type: GrantFiled: October 28, 1991Date of Patent: December 28, 1993Assignee: Agfa-Gevaert, N.V.Inventors: Paul J. Coppens, Joan T. Vermeersch, Luc H. Leenders, Ludovicus H. Vervloet, Eric M. Hoes, Eddie R. Daems
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Patent number: 5272041Abstract: The present invention provides a method for obtaining a negative type lithographic printing plate comprising the steps of (i) image-wise exposing a diffusion transfer reversal imaging element comprising a direct positive silver halide emulsion that mainly forms an internal latent image and a layer containing physical development nuclei, (ii) fogging said image-wise exposed imaging element, (iii) developing said imaging element using a surface developer, (iv) transfering the undeveloped silver salts in the non-exposed areas to said layer containing physical development nuclei and (v) image-wise depositing said silver salts on said physical development nuclei in the presence of physical development restraining compound(s).Type: GrantFiled: October 10, 1991Date of Patent: December 21, 1993Assignee: Agfa-Gevaert, N.V.Inventor: Ludo L. Van Rompuy
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Patent number: 5268253Abstract: The present invention provides a method for making a lithographic printing plate according to the DTR-process comprising the steps of:information-wise exposing an imaging element comprising on a support in the order given a photosensitive layer containing a silver halide emulsion and a layer containing physical development nuclei;developing said information-wise exposed imaging element in the presence of developing agent(s) and silver halide solvent(s)characterized in that said silver halide emulsion comprises said silver halide in an amount of at least 2 g/m.sup.2 (expressed as AgNO.sub.3), said development is carried out in the presence of a physical development restraining compound and wherein imaging elements comprising a positive working silver halide emulsion of the internal latent image type are excluded. Lithographic printing plates with substantially improved printing endurance are obtained.Type: GrantFiled: January 27, 1993Date of Patent: December 7, 1993Assignee: Agfa-Gevaert, N.V.Inventor: Ludo Van Rompuy
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Patent number: 5258258Abstract: Disclosed is a processing solution used for making lithographic printing plates by silver complex diffusion transfer process which contains at least one thioether derivative represented by the following formulas (I), (II) and (III): ##STR1## wherein n.sub.1 and n.sub.2 each represents 0, 1 or 2 and R.sub.1 and R.sub.2 each represents an alkylene group of 1-5 carbon atoms, ##STR2## wherein R.sub.1 represents an alkylene group of 1-5 carbon atoms, X represents a hydrogen atom, a carboxy group, an alkoxycarbonyl group, a carbamoyl group, a hydroxy group, or --OR.sup.2 in which R.sup.2 has the same meaning as --R.sub.1 --S).sub.n CH.sub.2 CH.sub.2 OH above, and n represents 0, 1 or 2, ##STR3## wherein X' represents an aromatic or heterocyclic group which has a carboxy group, R.sub.1 and R.sub.2 each represents an alkylene group of 1-5 carbon atoms and n represents 0, 1, 2 or 3.Type: GrantFiled: October 10, 1991Date of Patent: November 2, 1993Assignee: Mitsubishi Paper Mills LimitedInventors: Eiji Matsubara, Hidetoshi Miura, Takimi Hashimoto
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Patent number: 5206115Abstract: A film unit for use in a silver salt diffusion transfer image-forming process is disclosed. The film unit includes a light-sensitive element, an alkaline treating element, and an image-receiving element. The light-sensitive element includes a light-sensitive silver halide emulsion layer containing a light-sensitive silver halide emulsion which contains silver bromoiodide or silver bromoiodochloride having a silver iodide content of 0.5 to 3.5 mol %, wherein silver bromoiodide having a silver iodide content of 1 to 5 mol % is formed on the surface of the silver halide grains in an amount of from 3 to 10% on a silver basis after completion of chemical sensitization. The alkaline treating element contains a water-soluble iodide in an amount of from 0.3 to 3.0 mM/l and tetrahydrophyrimidinethione in an amount of from 0.3 to 3.0 mM/l. The film unit allows rapid completion of transfer images without loss of photographing sensitivity.Type: GrantFiled: May 20, 1992Date of Patent: April 27, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Koukichi Waki
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Patent number: 5196290Abstract: The present invention provides a method for making a lithographic aluminium offset printing plate comprising the steps of:information-wise exposing an imaging element comprising on an aluminium support a layer of physical development nuclei and a silver halide emulsion layerdeveloping said information-wise exposed imaging element in the presence of a silver halide solvent to obtain a silver image in said layer of physical development nuclei andremoving all layers on top of said silver image to expose said silver image by means of washing with rinsing water characterized in that said rinsing water has a pH of 4 to 8 and is bufferred.Type: GrantFiled: May 27, 1992Date of Patent: March 23, 1993Assignee: AGFA-Gevaert, N.V.Inventors: Paul J. Coppens, Ludovicus H. Vefvloet, Eric M. Hoes