Transfer Process With Uniform Heat Application And Element Therefor Patents (Class 430/254)
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Patent number: 5541034Abstract: Heat-developable silver-based photosensitive imaging element comprising a heat-reducible organic silver salt, a photosensitive silver halide, a developing agent, and a releasing compound that upon reaction with either the reduced or the oxidized form of the developing agent is capable of releasing a hydrophobizing agent. The invention also relates to a method for producing a lithographic printing plate comprising image-wise exposing an imaging element, bringing the exposed element in face-to-face contact with an oleophobic surface of a printing plate precursor, heating the imaging element while in contact or before being brought in contact with the oleophobic surface to cause reduction of the organic silver salt and to cause the release of the hydrophobizing agent from the releasing compound, allowing the hydrophobizing agent to diffuse to the oleophobic surface to render the surface image-wise oleophilic, and separating the resulting lithographic printing plate from the imaging element.Type: GrantFiled: June 3, 1994Date of Patent: July 30, 1996Assignee: Agfa-Gevaert, N.V.Inventors: Luc Leenders, Rudy Van Cleuvenbergen, Rudi De Busser, Marcel Monbaliu
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Patent number: 5533452Abstract: A printing method for an in situ plate production process in which a photosensitive plate blank having a polymerization layer between a support and a release film is fixed to a plate cylinder either before or after forming a polymerization-nonpolymerization pattern in the polymerization layer. The polymerization layer can be a thermal development-type photosensitive layer for forming the pattern. The release film is then peeled apart from the plate blank to leave a printing plate on the plate cylinder, which can be used for printing and for an inking step. The printing pattern of the plate can be formed by selective removal of the unpolymerized part or by selective transfer of the release film to the polymerized part of the polymerization layer.Type: GrantFiled: November 4, 1994Date of Patent: July 9, 1996Assignee: Canon Kabushiki KaishaInventors: Akihiro Mouri, Tsuyoshi Shibata, Yuji Kondo
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Patent number: 5534384Abstract: A photosensitive material for the production of color proofing films for multicolor printing, having(A) a transparent, flexible film support of plastic,(B) a photopolymerizable layer which contains(B1) a polymeric binder,(B2) a free-radically polymerizable compound,(B3) a compound which is capable of initiating the polymerization of (B2) on exposure to actinic light, and(B4) a dye or a colored pigment in a primary color of multicolor printing, and(C) a thermoplastic adhesive layer having a layer weight of from about 2 to about 30 g/m.sup.2 on the photo-sensitive layer, wherein the thermoplastic adhesive layer contains from about 0.01 to about 0.5% by weight of a colorless pigment having a mean particle size which corresponds to from 1 to 100% of the layer thickness.Type: GrantFiled: February 19, 1993Date of Patent: July 9, 1996Assignee: Hoechst AktiengesellschaftInventors: Stephan J. W. Platzer, Siegfried Nuernberger, Karin Maerz
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Patent number: 5534373Abstract: A photosensitive material comprising (A) a flexible transparent film support, (B) a colored photosensitive layer which contains an organic binder (B1) a dye or a colored pigment (B2), a compound (B3), which forms a strong acid on exposure to radiation, and a compound (B4) which has at least one group cleavable by the acid, and (C) an adhesion-promoting layer which contains a thermoplastic polymer which has a softening temperature in the range from 40.degree. to 200.degree. C., wherein the adhesion (a.sub.1) of the unexposed photosensitive layer (B) to the adhesion-promoting layer (C) is less than the adhesion (a.sub.3) of the unexposed photosensitive layer (B) to the film support (A) and than the cohesions of the layers (B) and (C), and the adhesion (a.sub.3 ') of the exposed photosensitive layer (B) to the film support (A) is less than the adhesion (a.sub.Type: GrantFiled: April 19, 1995Date of Patent: July 9, 1996Assignee: Agfa-Gevaert AGInventors: Stephan J. W. Platzer, Andrea Buchmann, Gerhard Buhr
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Patent number: 5527654Abstract: A process for the production of a color image is described, in which a photosensitive material that has a temporary support film, a colored photosensitive layer and an adhesion-promoting layer that can be activated by heat is laminated at high temperature and under pressure with an image-receiving material which carries, on a support, a pigment layer containing a white pigment. The photosensitive layer is exposed imagewise and developed to produce an image, the temporary support film is peeled off from the image-receiving material before or after exposure to light and, if required, these steps are repeated with at least one further photosensitive material whose colored layer has another color to produce a multi-colored image. The process gives color images having a smaller dot enlargement compared with a halftone original and is particularly suitable for the color testing of copy for multicolor printing.Type: GrantFiled: July 18, 1994Date of Patent: June 18, 1996Assignee: Hoechst AktiengesellschaftInventors: Martin Benzing, Dieter Mohr, Juergen Mertes, Peter Blum
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Patent number: 5521035Abstract: Color filter elements are prepared by the laser induced thermal transfer of colorant from a color donor to a transparent, non-birefringent substrate such as glass or polymeric film. Transparent pigments which are less prone to migration, more thermally stable, and considerably more lightfast than dyes can be used to prepare the color filter elements of this invention. Color filter elements are useful for elements in color displays such as liquid crystal display devices.Type: GrantFiled: July 11, 1994Date of Patent: May 28, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Martin B. Wolk, Thomas A. Isberg, Kenneth L. Hanzalik, Jeffrey C. Chang, Richard E. Bills, William V. Dower, Terrance P. Smith
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Patent number: 5501940Abstract: A binary image comprising a plurality of first areas, at which a porous or particulate image-forming substance is adhered to a substrate, and a plurality of second areas, at which the substrate is free from the image-forming substance, is protected by laminating thereto a laminating sheet comprising a durable layer and a support layer with the durable layer facing the image, so that the durable layer adheres to both the first and second areas of the image. The support layer is then displaced away from the image such that the durable layer remains attached to the image. The durable layer is substantially transparent and comprises a polymeric organic material having incorporated therein a siloxane, the siloxane being incorporated into the polymeric material in such a manner that it is not removed therefrom by hexane, isopropanol or water.Type: GrantFiled: May 20, 1993Date of Patent: March 26, 1996Assignee: Polaroid CorporationInventors: Iris B. K. Bloom, Agota F. Fehervari, Russell A. Gaudiana, Richard A. Minns, Howard G. Schild
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Patent number: 5498504Abstract: A process is provided for forming an image involving a photosensitive element comprising a photopolymerisable monomer and a reducible metal salt, preferably silver behenate, and a donor element containing a reducing agent. After lamination to a cover sheet, photopolymerisation and delamination, the image density is built up by lamination to the donor element, transfer of reducing agent and peeling-apart, possibly followed by heating the photosensitive element.Type: GrantFiled: November 21, 1994Date of Patent: March 12, 1996Assignee: Agfa-Gevaert, N.V.Inventors: Luc Leenders, Eddie Daems
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Patent number: 5478695Abstract: Heat-sensitive imaging element comprising a support carrying a binder layer, optionally an intermediate adhesive layer, and and a barrier layer that is ablatable by a laser beam or permeabilizable under the influence of a laser beam, wherein said binder layer contains at least one hydrophobizing agent capable of diffusing under the influence of heat through holes made in said barrier layer or through permeabilized parts of said barrier layer and capable of reacting with the oleophobic surface of a printing plate precursor brought in face-to-face contact with said barrier layer. The present invention also relates to a process for producing a lithographic printing plate, wherein use is made of such heat-sensitive imaging element.Type: GrantFiled: November 22, 1993Date of Patent: December 26, 1995Assignee: AGFA-Gevaert, N.V.Inventor: Luc Leenders
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Patent number: 5478694Abstract: The invention relates to a photosensitive material for the production of color proofing films for multicolor printing comprising:A) a transparent, flexible film support,B) a photopolymerizable layer containing:B1) a polymeric binder,B2) a free radical-polymerizable compound,B3) a compound which is capable of initiating the polymerization of (B2) on exposure to actinic light, andB4) a dye or colored pigment in a primary color of multicolor printing, andC) a thermoplastic adhesive layer on the photosensitive layer,which contains at least about 1.5% by weight of a water-soluble, colorless, low-molecular-weight salt whose aqueous solution is not highly acidic.The material is processed by lamination onto an image-receiving material, exposure and peeling apart of the film support and the image-receiving material, the unexposed areas of the layer and the adhesive layer remaining on the image-receiving material.Type: GrantFiled: May 17, 1993Date of Patent: December 26, 1995Assignee: Hoechst AktiengesellschaftInventors: Karin Maerz, Ine Gramm, Manfred Hilger, Dieter Mohr, Stephan J. W. Platzer
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Patent number: 5460918Abstract: A thermal transfer system for transferring material in an imagewise manner by means of thermal transfer printing from a donor element to an image receiving element is used to prepare printing plates. In one construction, a donor element, which is prepared by coating a photoinitiator (and optionally a sensitizer) in a binder on a backing material, is used with an image receiving element, which is prepared by coating a photopolymer (and optionally a sensitizer) on a substrate having a microporous hydrophilic crosslinked silicated surface. In an alternative construction, a donor element, which is prepared by coating a sensitizer in a binder on a backing material, is used with an image receiving element, which is prepared by coating a photopolymer and photoinitiator on a substrate having a microporous hydrophilic crosslinked silicated surface.Type: GrantFiled: October 11, 1994Date of Patent: October 24, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: M. Zaki Ali, Mahfuza Ali, David R. Boston, Jeffrey C. Chang
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Patent number: 5455142Abstract: An image formation process uses two light-sensitive elements comprising first and second adhesive light-sensitive layers which become nonadhesive upon exposure to light, respectively, and first and second toner elements comprising toner layers (a') and (b') of hues (a) and (b), respectively.Type: GrantFiled: October 21, 1992Date of Patent: October 3, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yohnosuke Takahashi, Hideyuki Nakamura, Fumiaki Shinozaki, Shinji Tsuno
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Patent number: 5439775Abstract: An image formation process uses two light-sensitive elements comprising first and second adhesive light-sensitive layers which become nonadhesive upon exposure to light, respectively, and first and second toner elements comprising toner layers (a') and (b') of hues (a) and (b), respectively.Type: GrantFiled: December 14, 1994Date of Patent: August 8, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yohnosuke Takahashi, Hideyuki Nakamura, Fumiaki Shinozaki, Shinji Tsuno
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Patent number: 5436112Abstract: This invention provides novel ethylenically unsaturated urethane monomers and photoreactive compositions comprising such monomers as essential constituents. The monomers can be photopolymerized or photocrosslinked and are useful in coating systems and multilayer color proofing systems. Additionally, they offer superior advantages such as significantly reduced migration between layers in multilayer color proofing systems.Type: GrantFiled: April 1, 1994Date of Patent: July 25, 1995Assignee: Hoechst Celanese CorporationInventors: Shane Hsieh, Wojciech A. Wilczak
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Patent number: 5415974Abstract: A photosensitive material comprises a photosensitive silver halide, an organic silver salt, a reducing agent, a polymerizable polymer precursor, a photopolymerization initiator and a heat-diffusible coloring matter. As a preferred embodiment, the photosensitive material comprises a photosensitive layer containing the photosensitive silver halide, the organic silver salt and the reducing agent, a polymerizing layer containing the polymerizable polymer precursor and the photopolymerization initiator, and a coloring material layer containing the heat-diffusible coloring material. A image forming method employing the photosensitive material comprises the steps of a) subjecting the photosensitive material to imagewise exposure; b) heating the photosensitive material; c) subjecting to whole areas exposure at least the polymerizing layer; and d) heating at least the coloring material layer to transfer the heat-diffusible coloring matter to an image-receiving material, thus forming a color image.Type: GrantFiled: April 26, 1993Date of Patent: May 16, 1995Assignee: Canon Kabushiki KaishaInventors: Masato Kotayama, Tetsuro Fukui, Akihiro Mouri, Kazuo Isaka, Kyo Miura, Kenji Kagami, Masao Suzuki
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Patent number: 5409799Abstract: According to the present invention a method is provided for obtaining an image comprising the steps of:information-wise exposing an imaging element comprising on a support a photosensitive layer containing a photopolymerizable composition and a base layer located between said support and said photosensitive layer and wherein said base layer is contiguous to said photosensitive layer and comprises a polymer containing polymerizable ethylenically unsaturated groups andtransferring upon heating the non-hardened or insufficiently hardened parts of said photosensitive layer to an image receiving material. When the image receiving material contains a hydrophilic surface a lithographic printing plate can be obtained.Type: GrantFiled: June 15, 1992Date of Patent: April 25, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Herman J. Uytterhoeven, Rafael P. Samijn, Joan T. Vermeersch, Yves L. Verburgh
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Patent number: 5409798Abstract: A printing plate blank is formed by disposing successively a base layer, a photosensitive layer susceptible of peeling development, and a peeling support layer (or a laminate of a photosensitive silver salt layer including a photosensitive silver halide, an organic silver salt and a reducing agent). A printing plate is prepared by forming a polymerized part in the photosensitive layer through imagewise exposure and peeling apart the peeling support layer (or the laminate) together with the yet-unpolymerized port of the photosensitive layer to leave the polymerized part of the photosensitive layer on the base layer. The resultant printing plate is provided with an improved printing durability primarily by inclusion of a polymerizable compound in the base layer effective for firmly fastening the polymerized part to the base layer and additionally by subjecting the thus-prepared printing plate to additional exposure, heating and/or pressure application.Type: GrantFiled: August 27, 1992Date of Patent: April 25, 1995Assignee: Canon Kabushiki KaishaInventors: Yuji Kondo, Tsuyoshi Shibata
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Patent number: 5401606Abstract: A laser-induced melt transfer process is described in which a melt viscosity modifier is used to facilitate the melt transfer process.Type: GrantFiled: April 30, 1993Date of Patent: March 28, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Joseph E. Reardon, Anthony J. Serino
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Patent number: 5399458Abstract: A process for preparing images, particularly color proof prints, in which tacky and non-tacky areas are produced by imagewise exposure of a radiation-sensitive layer is described. The tacky areas are toned with a toner having a tackiness that can be increased by irradiation with actinic radiation.Type: GrantFiled: August 10, 1993Date of Patent: March 21, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Mario Grossa, Dieter Tigler, Bernhard Metzger, Paola Gallo
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Patent number: 5395729Abstract: A laser-induced melt transfer process is described which utilizes a melt viscosity modifier and in which a post-transfer treatment is used to substantially eliminate back-transfer.Type: GrantFiled: April 30, 1993Date of Patent: March 7, 1995Assignee: E. I. du Pont de Nemours and CompanyInventors: Joseph E. Reardon, Anthony J. Serino
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Patent number: 5395730Abstract: A method is disclosed for the formation of an image comprising the steps of(1) image-wise exposing, in the presence of a photopolymerizable compound, a photosensitive element comprising a support and at least one photosensitive layer containing a silver halide sensitive to actinic radiation, an organic silver salt and a reducing agent,(2) heating said photosensitive layer while in contact with a receiving element and allowing non-photopolymerized compound in the non-exposed areas to transfer and penetrate in said receiving element, and,(3) separating said receiving element from said photosensitive element.The obtained image can be a useful visible image produced on at least one of the separated elements, or it can be a hydrophobic polymer image on a hydrophilic background formed in the finally separated-receiving element which is usable as a printing plate. In the former embodiment the receiving element comprises a support and a layer containing a pigment, e.g. carbon black.Type: GrantFiled: August 31, 1993Date of Patent: March 7, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Wolfgang Podszun, Herman J. Uytterhoeven, Roland F. Beels, Luc H. Leenders
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Patent number: 5393639Abstract: A thermally imageable laminar composite comprising a pair of opposed sheets confining therebetween a frangible layer of image-forming substance partitionable to the respective sheets on separation of the sheets after thermal imaging is protected against premature stress-induced delamination by the heat bonding of the opposed sheets to one another through said image-forming substance at the periphery of said composite, said bonding being at a strength substantially greater than that required to separate said sheets in the expansive thermally imageable region confined by said periphery. A method for preparing individual units of an imageable composite, including the steps of establishing a band-like heated zone in a supply web of laminate, corresponding to the boundaries of a unit to be cut therefrom, and cutting a unit from within said band-like zone is described.Type: GrantFiled: November 25, 1992Date of Patent: February 28, 1995Assignee: Polaroid CorporationInventor: Steven Kourepenis
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Patent number: 5393638Abstract: An image is formed by subjecting to imagewise exposure an image forming medium containing at least a heat-diffusible coloring matter, a photosensitive silver halide, an organic silver salt, a reducing agent, a polymerizable polymer precursor and a photopolymerization initiator; heating the image forming medium thus treated; subjecting it to polymerization exposure to form a polymerized area and an unpolymerized area in the image forming medium; separating the polymerized area from the unpolymerized area; and superposing an image receiving medium onto the unpolymerized area to transfer the heat-diffusible coloring matter in the unpolymerized area to the image receiving medium.Type: GrantFiled: June 10, 1991Date of Patent: February 28, 1995Assignee: Canon Kabushiki KaishaInventors: Akihiro Mouri, Masato Katayama, Kazuo Isaka, Tetsuro Fukui
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Patent number: 5374184Abstract: A photopolymerizable material having(A) a flexible, transparent film support;(B) a colored, polymerizable layer containing an organic binder, a free-radical-polymerizable compound, containing at least one terminal ethylenically unsaturated group, and a dye or colored pigment;(C) an adhesion layer containing a thermoplastic polymer and having a T.sub.g of from 25.degree. to 100.degree. C.; and(D) an uncolored photopolymerizable layer which contains a polymeric organic binder, a free-radical-polymerizable compound containing at least one terminal ethylenically unsaturated group and a photopolymerization initiator between the film support (A) and the colored polymerizable layer (B),where the cohesion of layers (B), (C) and (D) and the adhesion of these layers to one another and to the film support (A) provides the relationship wherein the adhesion (a.sub.2) of the photopolymerizable layer (D) to the colored layer (B) in the unexposed state is lower than: (i) the adhesion (a.sub.Type: GrantFiled: April 4, 1994Date of Patent: December 20, 1994Assignee: Hoeschst AktiengesellschaftInventors: Stephan J. W. Platzer, Gerhard Buhr, Manfred Michel, Andrea Buchmann
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Patent number: 5374497Abstract: A print-out layer is incorporated in a donor element that is useful in a dry color proofing process in which a colored image is transferred from the donor element to a receiver. To achieve full color reproduction, images are transferred in succession and in register, to the receiver from donor elements, respectively containing yellow, magenta, cyan and black colorants. A visible image is formed in the print-out layer as a result of imagewise exposure of the donor element to activating radiation and is utilized to facilitate visual registration in forming the multicolor image on the receiver.Type: GrantFiled: August 31, 1993Date of Patent: December 20, 1994Assignee: Eastman Kodak CompanyInventors: Richard J. Kapusniak, David A. Niemeyer
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Patent number: 5360688Abstract: A composite film article which is a flexible, heat resistant, polymeric film material having a non-opaque, partially translucent white surface side, having a visible light opacity of from about 0.90 to about 0.99; and a non-opaque, black surface side having a visible light opacity of less than 1.0, a transmission density of less than about 2.0 and a thickness less than about 5.0 microns. The article may be used as a base for images such that the images have a reduced optical dot gain.Type: GrantFiled: November 23, 1993Date of Patent: November 1, 1994Assignee: Hoechst Celanese CorporationInventors: Robert J. von Trebra, Dennis J. Bellville
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Patent number: 5352562Abstract: Disclosed is an image forming process employing a light-sensitive image forming material. The image forming material comprises a support, a light-heat conversion layer and an image forming layer, superposed in order. The process comprises the steps of imagewise exposing the image forming material to light so as to increase a bonding strength between the light-heat conversion layer and the image forming layer in the exposed area, pressing a receiving sheet on the light-heat conversion layer, and removing the receiving sheet from the image forming material to form a negative image on the receiving sheet in the unexposed area and to leave a positive image on the light-heat conversion layer in the exposed area.Type: GrantFiled: March 26, 1992Date of Patent: October 4, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Yonosuke Takahashi, Hideyuki Nakamura, Fumiaki Shinozaki
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Patent number: 5346801Abstract: An image forming process of an image forming material comprising a support and provided thereon, a photosensitive layer and a covering layer in that order comprises imagewise exposing the material by laser beam scanning, and peeling the covering film from the exposed material to form an image on the support or on the covering film, wherein said photosensitive layer contains a colorant, an addition-polymerizable or cross-linkable compound and a salt of a cationic dye with a borate anion represented by the following Formula (1):Formula (1) ##STR1##Type: GrantFiled: March 18, 1993Date of Patent: September 13, 1994Assignee: Konica CorporationInventors: Hiroshi Watanabe, Tatsuichi Maehashi, Koichi Nakatani, Katsunori Kato, Tawara Komamura
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Patent number: 5340693Abstract: The present invention provides a heat recording material comprising on a support in the order given a porous layer of an image forming substance, a substance capable of converting radiation into heat, a thermoplastic layer containing a photocurable composition and a stripping layer. The present invention further provides a method for obtaining an image with such an heat recording material. Images of high quality and good wear and scratch resistance are obtained.Type: GrantFiled: February 18, 1993Date of Patent: August 23, 1994Assignee: Agfa-Gevaert, N.V.Inventors: Herman Uytterhoeven, Luc Bastiaens, Rudolf Van den Bergh, Luc Leenders
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Patent number: 5328727Abstract: An image formed by an arbitrary method, can be reproduced on an object (to which image transfer is performed) having a three-dimensional arcuated surface, e.g., a cylindrical object. An original plate sheet is prepared by forming an image on a transparent sheet by using an ink containing carbon. A transfer ink sheet having a hot-melt ink layer formed on its one surface and a reflecting layer formed on its other surface is placed on an object to which image transfer is performed. A cushion member having transparency is placed on the transfer ink sheet, and a transparent plate is stacked on the cushion member. When the transparent plate is urged against the object side, the cushion member is compressed. As a result, the original plate sheet is deformed along the outer surface shape of the object and is brought into tight contact therewith. A flash lamp is turned on in this state. An image portion absorbs infrared rays emitted from the flash to generate heat.Type: GrantFiled: August 10, 1992Date of Patent: July 12, 1994Assignee: Casio Computer Co., Ltd.Inventors: Yukio Kashio, Yasuo Genba
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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: 5328800Abstract: The present invention provides 4 embodiments of a new image forming method. The image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material comprises a support and a light-sensitive polymerizable layer provided thereon. The light-sensitive polymerizable layer contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound or/and a cross-linkable polymer and a colorant. The image forming method comprises an exposing step, a developing step, a removing step, a transferring step and a repeating step. Some embodiments of the method further contain a laminating step. The present invention is characterized in that a multicolor image is formed on an image receiving material by the repeating step.Type: GrantFiled: May 6, 1992Date of Patent: July 12, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroaki Yokoya, Keiji Takeda, Osami Tanabe, Katsuji Kitatani
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Patent number: 5326667Abstract: The present invention provides 6 embodiments of a new image forming method. The image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material comprises a support and a light-sensitive polymerizable layer provided thereon. Some embodiments of the light-sensitive material further have an adhesive layer. The light-sensitive polymerizable layer contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or/and a cross-linkable polymer. Some embodiments of the light-sensitive polymerizable layer further contain a colorant. The image forming method comprises an exposing step, a developing step, a removing step and a transferring step or a laminating step. Some embodiments of the image forming method further contains a peeling step or a toning step. The present invention is characterized in the combination of the removing step with the transferring step or the laminating step.Type: GrantFiled: May 6, 1992Date of Patent: July 5, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroaki Yokoya, Keiji Takeda, Osami Tanabe, Katsuji Kitatani
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Patent number: 5314784Abstract: A process for transferring toned images to an image receptor at low temperatures with improved back transfer characteristics.Type: GrantFiled: March 4, 1993Date of Patent: May 24, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Robert P. Held
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Patent number: 5304454Abstract: The present invention provides 3 embodiments of a new image forming method. The image forming method uses a light-sensitive material and an removing sheet. The light-sensitive material comprises a support and a light-sensitive polymerizable layer provided thereon. Some embodiments of the light-sensitive material further have an adhesive layer. The light-sensitive polymerizable layer contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or/and a cross-linkable polymer. Some embodiments of the light-sensitive polymerizable layer further contain a colorant. The image forming method comprises an exposing step, a developing step and a removing step. Some embodiments of the image forming method further contains a toning step. The present invention is characterized in the removing step using a removing sheet.Type: GrantFiled: May 6, 1992Date of Patent: April 19, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroaki Yokoya, Keiji Takeda, Osami Tanabe, Katsuji Kitatani
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Patent number: 5300399Abstract: In the present invention, one produces a negative-acting color proofing element comprising, sequentially, a strippable cover sheet which is transparent to actinic radiation; a crosslinked layer containing a polymer having phenolic groups; a color layer, containing a colorant, a polymeric binder, a polymerizable monomer and, optionally, a photoinitiator; a photoadhering layer, containing a linear photosensitive polymer containing ethylenically unsaturated, free-radical polymerizable groups and having a molecular weight greater than 3,000, a polymerizable monomer, and, optionally, a free radical photoinitiator; a thermoplastic adhesive layer; and a receiver sheet, at least one of the color layer and the photoadhering layer containing the photoinitiator.Type: GrantFiled: January 21, 1993Date of Patent: April 5, 1994Assignee: Hoechst Celanese CorporationInventor: Wojciech A. Wilczak
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Patent number: 5296331Abstract: An image receiving material comprises an image receiving layer provided on a support. The image receiving layer contains particles of a thermoplastic compound. The image receiving layer has a porous surface formed by the particles. According to the present invention, the image receiving material is prepared by forming the image receiving layer on the support and heating the image receiving layer at a temperature of higher than a softening point of the thermoplastic compound to widen pores in the porous surface. The image receiving material is preferably used in combination with a light-sensitive material which comprises a support and a light-sensitive layer in which light-sensitive microcapsules are dispersed. The light-sensitive microcapsules contain silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound and a color image forming substance.Type: GrantFiled: March 10, 1993Date of Patent: March 22, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Keiichi Taguchi
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Patent number: 5294515Abstract: This invention relates to negative working photopolymerizable sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to accurately predict the image quality from a lithographic printing process. Image development is by peel apart processing.Type: GrantFiled: May 17, 1991Date of Patent: March 15, 1994Assignee: Hoechst Celanese CorporationInventors: Wojciech A. Wilczak, Timothy Hannigan
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Patent number: 5288570Abstract: A composite film article which is a flexible, heat resistant polymeric film material having a non-opaque, partially translucent white surface side, having a visible light opacity of from about 0.90 to about 0.99; and a non-opaque, black surface side having a visible light opacity of less than 1.0, a transmission density of less than about 2.0 and a thickness of less than about 5.0 microns. The article may be used as a base for images such that the images have a reduced optical dot gain.Type: GrantFiled: August 12, 1992Date of Patent: February 22, 1994Assignee: Hoechst Celanese CorporationInventors: Robert J. von Trebra, Dennis J. Bellville
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Patent number: 5262295Abstract: A heat-developable photosensitive material is disclosed which has a support and provided thereon a photosensitive layer. The photosensitive layer contains at least an organic silver salt, a silver halide and a reducing agent represented by the formula (I). Also, an image forming method using the heat-developable photosensitive material is disclosed.Type: GrantFiled: April 14, 1992Date of Patent: November 16, 1993Assignee: Canon Kabushiki KaishaInventors: Hiromi Tanaka, Tetsuro Fukui, Kenji Kagami, Masao Suzuki
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Patent number: 5246811Abstract: An image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material comprises a support and a light-sensitive layer provided thereon. The light-sensitive layer contains silver halide, a reducing agent, pigment particles, an ethylenically unsaturated polymerizable compound and a base precursor. The silver halide, the reducing agent, the pigment particles, the polymerizable compound and the base precursor are contained in microcapsules dispersed in the light-sensitive layer. The image forming method comprises imagewise exposing the light-sensitive material, developing the light-sensitive material to polymerize the polymerizable compound, and pressing the light-sensitive material on the image receiving material to transfer the pigment particles to the image receiving material. In the present invention, the light-sensitive material is pressed at a pressure in the range of 20 kg/cm.sup.2 to 500 kg/cm.sup.2 while heating the light-sensitive material at 30.degree. C.Type: GrantFiled: January 17, 1992Date of Patent: September 21, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Manabu Higuchi
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Patent number: 5246812Abstract: A white, partially translucent, metallized film article which having a flexible, heat resistant, polymeric film material with opposite sides. The film material has deposited on a first side a metal coating which is spectrally reflective and partially light transmissive in the visible region of the spectrum, is capable of transmitting from about 1% to about 70% of incident visible light cast thereon; the second side having a white outermost surface, and has a visible light opacity of from about 0.5 to about 0.98.Type: GrantFiled: March 22, 1990Date of Patent: September 21, 1993Assignee: Hoechst Celanese CorporationInventors: Robert J. von Trebra, Gerald A. Smith, Roy E. Hensel, Oliver A. Barton, deceased
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Patent number: 5236806Abstract: This invention relates to positive working photopolymerizable sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to accurately predict the image quality from a lithographic printing process.Type: GrantFiled: June 13, 1991Date of Patent: August 17, 1993Assignee: Hoechst Celanese CorporationInventor: Stephan J. W. Platzer
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Patent number: 5236801Abstract: The present invention is directed to an imaging system wherein the developed image and non-image areas are transferred to a receptor element by a transfer coating layer. The transfer layer of the present invention is coated on the support of the imaging sheet and/or developer sheet and comprises a material capable of holding developed images and non-image areas that can be transferred to a receptor surface upon the application of heat to the rear surface of the support. The transfer coating layer is capable of liquefying when heated and resolidifying when heat is removed.Type: GrantFiled: April 7, 1992Date of Patent: August 17, 1993Assignee: Foto-Wear, Inc.Inventor: Donald Hare
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Patent number: 5227277Abstract: An imaging medium comprises a layer, depolymerizable by exposure to actinic radiation and substantially non-tacky prior to depolymerization but becoming tacky upon at least partial depolymerization, disposed adjacent a layer of an imaging material, which has a cohesive strength greater than the adhesive strength between the imaging material and the depolymerizable layer prior to depolymerization. This medium is imagewise exposed to radiation, thereby causing at least partial depolymerization of the polymer in the exposed areas, so rendering these exposed areas tacky and firmly attaching exposed areas of the imaging material layer to the depolymerizable layer. The unexposed areas of the imaging material are then removed from the depolymerizable layer.Type: GrantFiled: April 17, 1991Date of Patent: July 13, 1993Assignee: Polaroid CorporationInventor: Kenneth C. Waterman
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Patent number: 5225314Abstract: An imaging medium comprises a layer, depolymerizable by exposure to actinic radiation and undergoing a reduction in cohesivity upon at least partial depolymerization, disposed adjacent a layer of an imaging material, which has a cohesive strength greater than the cohesive strength of the depolymerizable layer after depolymerization. This medium is imagewise exposed to radiation, thereby causing at least partial depolymerization of the polymer in the exposed areas, so rendering these exposed areas lower in cohesivity than the unexposed areas. The exposed areas of the imaging material are then removed from the depolymerizable layer.Type: GrantFiled: April 17, 1991Date of Patent: July 6, 1993Assignee: Polaroid CorporationInventors: Kenneth C. Waterman, Michael A. Young, Edward P. Lindholm
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Patent number: 5219702Abstract: A process for transferring toned images to an image receptor at low temperatures with improved back transfer characteristics.Type: GrantFiled: February 27, 1991Date of Patent: June 15, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Robert P. Held
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Patent number: 5215859Abstract: Negative-acting flexographic printing plates display enhanced performance when backside irradiated with ionizing radiation instead of longer wavelength ultraviolet radiation. A better defined floor and more readily controlled floor is produced on the final printing plate.Type: GrantFiled: July 26, 1990Date of Patent: June 1, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventor: John A. Martens
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Patent number: 5213940Abstract: The present invention relates to an image recording method utilizing photosensitive microcapsules. These photosensitive microcapsules have characteristics of being rendered hardenable upon exposure. Further, only the hardenable photosensitive microcapsules can be hardened. In this image recording method, an optional image pattern is initially exposed to a photosensitive recording medium having thereon the photosensitive microcapsules for rendering only the exposed photosensitive microcapsules hardenable corresponding to the image pattern. Subsequently, the exposed photosensitive recording medium is heated to harden only the hardenable photosensitive microcapsules. Further, the photosensitive recording medium is entirely exposed again with light to render the unhardened photosensitive microcapsules hardenable.Type: GrantFiled: April 3, 1992Date of Patent: May 25, 1993Assignee: Brother Kogyo Kabushiki KaishaInventors: Kouji Inaishi, Naomichi Kobayashi
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Patent number: 5196288Abstract: An image forming method of imagewise exposing and heating a light-sensitive material is disclosed. The light-sensitive material comprises a support and a light-sensitive layer provided thereon. The light-sensitive layer contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound, a color image forming substance and a base precursor. The silver halide, the reducing agent, the polymerizable compound, the color image forming substance and the base precursor are contained in microcapsules which are dispersed in the light-sensitive layer. According to the present invention, the support is made of a thin polymer film having a thickness of not more than 75 .mu.m. The light-sensitive material is heated from the side of the support for 0.1 to 5 seconds.Type: GrantFiled: September 9, 1991Date of Patent: March 23, 1993Assignees: Fuji Photo Film Co., Ltd., Seiko Epson Corp., Seiko Instruments, Inc.Inventor: Taku Nakamura