Making Printing Plate Patents (Class 430/204)
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Patent number: 10703921Abstract: An electronic device includes a substrate and one or more electronic components positioned on the substrate. A surface layer is positioned on the electronic components, the surface layer comprising a polymer binder and a substituted or unsubstituted hexahydrotriazine compound.Type: GrantFiled: January 23, 2018Date of Patent: July 7, 2020Assignee: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 10448836Abstract: A hyperspectral/multispectral imager comprising a housing is provided. At least one light source is attached to the housing. An objective lens, in an optical communication path comprising originating and terminating ends, is further attached to the housing and causes light to (i) be backscattered by the tissue of a subject at the originating end and then (ii) pass through the objective lens to a beam steering element at the terminating end of the communication path inside the housing. The beam steering element has a plurality of operating modes each of which causes the element to be in optical communication with a different optical detector in a plurality of optical detectors offset from the optical communication path. Each respective detector filter in a plurality of detector filters covers a corresponding optical detector in the plurality of optical detectors thereby filtering light received by the corresponding detector from the beam steering element.Type: GrantFiled: April 29, 2016Date of Patent: October 22, 2019Assignee: Hypermed Imaging, Inc.Inventor: Mark Anthony Darty
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Patent number: 10112381Abstract: A method for producing flexographic printing plates, using a photopolymerizable flexographic printing element having, arranged one atop another, a dimensionally stable support, a photopolymerizable, relief-forming layer, an elastomeric binder, an ethylenically unsaturated compound, and a photoinitiator, and optionally a rough, UV-transparent layer, a particulate substance, and digitally imagable layer. The method includes: (a) producing a mask by imaging the digitally imagable layer, (b) exposing the photopolymerizable, relief-forming layer through the mask with actinic light, and photopolymerizing the image regions of the layer, and (c) developing the photpolymerized layer by washing out the unphotopolymerized regions of the relief-forming layer with an organic solvent, or by thermal development.Type: GrantFiled: July 12, 2011Date of Patent: October 30, 2018Inventors: Jens Schadebrodt, Armin Becker, Uwe Stebani, Maximilian Thate
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Patent number: 9448485Abstract: [Object] To provide a composition enabling to form a fine negative photoresist pattern free from troubles, such as, surface roughness, bridge defects, and resolution failure; and also to provide a pattern formation method using that composition. [Means to Solve the Problem] A fine pattern-forming composition is used for miniaturizing a resist pattern by fattening said pattern in a process of formation of a negative resist pattern using a chemically amplified resist composition. The fine pattern-forming composition comprises a polymer comprising a repeating unit having a structure of the following formula (A), (B) or (C): and a solvent. This composition is cast on a negative resist pattern obtained by development with an organic solvent developer, and then heated to form a fine pattern.Type: GrantFiled: October 10, 2012Date of Patent: September 20, 2016Assignee: MERCK PATENT GMBHInventors: Tetsuo Okayasu, Takashi Sekito, Masahiro Ishii
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Patent number: 9229325Abstract: Lithographic printing plate are formed by imagewise exposing a positive-working lithographic printing plate precursor with infrared radiation to form an imaged precursor comprising exposed regions and non-exposed regions, and processing the imaged precursor to remove the exposed regions using a processing solution having a pH of 12 or more, that contains a metal cation M2+ selected from barium, calcium, strontium, and zinc cations, and is substantially silicate-free. The positive-working lithographic printing plate precursor comprises a grained and anodized aluminum-containing substrate, a first ink receptive layer comprising at least one water-insoluble, alkali solution-soluble or -dispersible first resin, a second ink receptive layer disposed over the first receptive layer, and an infrared radiation absorber in an amount of at least 0.5 weight %, in either or both of the first ink receptive layer and the second ink receptive layer.Type: GrantFiled: February 25, 2014Date of Patent: January 5, 2016Assignee: EASTMAN KODAK COMPANYInventors: Celin Savariar-Hauck, Gerhard Hauck, Domenico Balbinot, Andrea Pauls
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Patent number: 9201307Abstract: The present invention provides a novel low pH developing solution which does not contain an inorganic strong alkali component.Type: GrantFiled: June 27, 2013Date of Patent: December 1, 2015Assignee: EASTMAN KODAK COMPANYInventor: Yasushi Miyamoto
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Patent number: 8952367Abstract: Provided is an organic light emitting element having a high light emission efficiency and a low drive voltage. In the organic light emitting element including a positive electrode, a negative electrode and an organic compound layer disposed between the positive electrode and the negative electrode, the organic compound layer includes a thioxanthone compound represented by the following general formula [1].Type: GrantFiled: October 31, 2011Date of Patent: February 10, 2015Assignee: Canon Kabushiki KaishaInventors: Jun Kamatani, Masanori Seki, Takeshi Sekiguchi, Yosuke Nishide, Akihito Saitoh
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Patent number: 8772740Abstract: A method of imaging a printing plate and curing the printing plate made of or having photo-curable material that includes an ablatable mask. In one embodiment, the method comprises imaging the ablatable mask with a first portion of imaging data to produce a partially imaged uncured plate. Imaging data includes the first portion and a second portion of imaging data. The method includes curing the partially imaged uncured plate using UV with a first set of parameters to produce a partially cured plate with a partially ablated mask thereon, the curing arranged for producing flat tops, imaging the partially ablated mask on the partially cured plate with the second portion of imaging data to produce a totally imaged partially cured plate, and curing the totally imaged partially cured plate with a second set of one or more curing parameters to produce a totally cured plate to produce round tops.Type: GrantFiled: March 30, 2012Date of Patent: July 8, 2014Assignee: Esko-Graphics Imaging GmbHInventors: Thomas Klein, Wolfgang Sievers
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Patent number: 8547688Abstract: A resin overcap with an IC tag used as an overcap being on a metal cap and having an IC tag so that the transmission and reception of signals will not be disturbed by the metal cap, comprising a top panel and a cylindrical side wall hanging down from the circumferential edge of the top panel and in which the metal cap is fitted, wherein a step or a protrusion is formed on an upper portion on the inner surface of the cylindrical side wall to prevent the upward motion of the metal cap fitted in the cylindrical side wall, and an IC tag provided with an IC chip is mounted on the top panel to maintain a predetermined distance D to a top plate of the metal cap fitted into the cylindrical side wall.Type: GrantFiled: February 15, 2013Date of Patent: October 1, 2013Assignee: Toyo Seikan Kaisha, Ltd.Inventors: Takayuki Kikuchi, Takahiro Kurosawa, Ken Sotobayashi, Masayuki Mori, Kazuo Tanabe
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Patent number: 7800638Abstract: A laser engraving machine has a recording drum 11 rotatable with a flexo sensitive material 10 mounted peripherally thereof, and a recording head 20 movable parallel to the axis of this recording drum 11. The recording head 20 includes a first laser source 21 for emitting a precision engraving beam L1, a second laser source 24 for emitting a coarse engraving beam L2, an AOM 22 for modulating the precision engraving beam L1, an AOD 23 for causing the precision engraving beam L1 to scan axially of the recording drum 11, an AOM 25 for modulating the coarse engraving beam L2, a synthesizing device 27, and an optic 26 for condensing the precision engraving beam L1 and coarse engraving beam L2 synthesized by the synthesizing device 27 on the flexo sensitive material 10.Type: GrantFiled: March 8, 2006Date of Patent: September 21, 2010Assignee: Dainippon Screen Mfg. Co., Ltd.Inventor: Hideaki Ogawa
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Patent number: 7511797Abstract: A lithography system in which a performance criterion of the lithography system is predicted, based on one or more operating conditions of the lithography system, and compared to measurements of that performance criterion. The lithography system may determine from a difference between the measured and predicted performance criterion which, if any, sub-system of the lithography system is not performing as expected.Type: GrantFiled: February 5, 2008Date of Patent: March 31, 2009Assignee: ASML Netherlands B.V.Inventors: Franciscus Van De Mast, Johan Christiaan Gerard Hoefnagels, Johannes Onvlee, Reinder Teun Plug
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Patent number: 7078146Abstract: Disclosed are a planographic printing plate material comprising a plastic sheet support, and provided thereon, a hydrophilic layer, a silver halide emulsion layer, a physical developing nucleus-containing layer, and a backing layer, wherein the hydrophilic layer, the silver halide emulsion layer, and the physical developing nucleus-containing layer are provided on one side of the support, and the backing layer is provided on the other side of the sheet opposite the silver halide emulsion layer, and wherein a surface on the backing layer side has a specific resistance of from 1×1011 to 1×1013 ?, and a coefficient of dynamic friction of from 0.15 to 0.6, the coefficient of dynamic friction being one of the surface on the backing layer side to a stainless steel surface.Type: GrantFiled: May 25, 2004Date of Patent: July 18, 2006Assignee: Konica Minolta Medical & Graphic, Inc.Inventor: Takeshi Sampei
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Patent number: 6911294Abstract: A multicolor image forming material comprising: an image receiving sheet comprising an image receiving layer; and at least five heat transfer sheets different in color each comprising a substrate, a light-heat conversion layer and an image forming layer, each of the heat transfer sheets being adapted to be superposed on the image receiving sheet with the image forming layer facing the image receiving layer and irradiated with laser light to transfer the irradiated area of the image forming layer to the image receiving layer to record an image on the image receiving sheet, wherein the area of the recording has a size of 515 mm by 728 mm or larger, and at least one of the heat transfer sheets comprises titanium oxide as a colorant in the image forming layer thereof.Type: GrantFiled: August 29, 2003Date of Patent: June 28, 2005Assignee: Fuji Photo Film Co., Ltd.Inventor: Shinichi Yoshinari
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Patent number: 6869743Abstract: There is disclosed a method of processing a light-sensitive material which comprises exposing a light-sensitive material having at least one light-sensitive layer on a support, and subjecting to development by a dipping system or a coating system, and then, peeling at least the light-sensitive layer off by bringing a peeling material into close contact with the light-sensitive material, wherein the peeling material is a material having a liquid-absorbing rate in which a liquid-absorption amount within 0.1 second after getting in contact with a liquid is 60% or more based on a liquid-absorption amount within 0.2 second after the same.Type: GrantFiled: November 15, 2000Date of Patent: March 22, 2005Assignee: Mitsubishi Paper Mills LimitedInventors: Shigeyoshi Suzuki, Yasuo Tsubai, Sadao Kuriu, Toshihito Maruyama, Kenji Hirata, Masato Asano, Masahiko Saikawa, Akira Furukawa
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Publication number: 20040248029Abstract: A lithographic printing plate system comprising a plate that is suitable for inkjet printing and a method for preparing the plate system comprising a support and a first composition that comprises at least one anionic compound and is spread onto the support; the lithographic support can be made for example of paper, electrograined-anodized aluminum, or flexible plastic polymer rendered hydrophilic beforehand by means of a specific surface treatment; an image that is faithful to the original is then reproduced on the lithographic plate with the aid of an inkjet printing system and of a second composition that contains at least one cationic compound, such as a diazo compound.Type: ApplicationFiled: April 5, 2004Publication date: December 9, 2004Applicant: DIGITAL MIND S.R.L.Inventors: Angelo Paulesu, Ubaldo Contini, Amilcare Cattaneo
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Publication number: 20040234886Abstract: A photosensitive element for use as a flexographic printing plate comprises a support, an elastomeric photopolymerizable layer having a surface opposite the support that defines a plane, and a matted layer disposed above the surface of the photopolymerizable layer comprising a polymeric binder and at least one matting agent which is capable of forming depressions from the plane into the photopolymerizable layer. Also described is a process for preparing such a photosensitive element and a process for preparing a flexographic printing plate from the photosensitive element.Type: ApplicationFiled: March 8, 2004Publication date: November 25, 2004Inventors: Michael Lee Rudolph, Gregory Scott Blackman, Udo Dietrich Bode, Violeta Lungu, John R. Shock
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Patent number: 6820551Abstract: A method for characterizing exposure levels in a platesetter comprises exposing regions of a plate at different exposure levels by modulating the power of an exposure beam and then analyzing the plate after development to determine a desired exposure level for plates on the platesetter by reference to the regions receiving the different exposure levels. The plates are preferably exposed in an area outside of a printing area. In this way, the exposure test can be performed as part of the normal plate printing process. The plate is not consumed. Moreover, the plate exposure setting can be constantly monitored throughout production in one implementation.Type: GrantFiled: August 27, 2003Date of Patent: November 23, 2004Assignee: Agfa CorporationInventors: David J. Romano, James Hebert, James Francis, Mark Bussard
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Publication number: 20040053157Abstract: A multicolor image forming material comprising: an image receiving sheet comprising an image receiving layer; and at least five heat transfer sheets different in color each comprising a substrate, a light-heat conversion layer and an image forming layer, each of the heat transfer sheets being adapted to be superposed on the image receiving sheet with the image forming layer facing the image receiving layer and irradiated with laser light to transfer the irradiated area of the image forming layer to the image receiving layer to record an image on the image receiving sheet, wherein the area of the recording has a size of 515 mm by 728 mm or larger, and at least one of the heat transfer sheets comprises titanium oxide as a colorant in the image forming layer thereof.Type: ApplicationFiled: August 29, 2003Publication date: March 18, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Shinichi Yoshinari
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Patent number: 6692886Abstract: An object of the present invention is to provide a method for manufacturing an aluminum printing plate which is superior in fine line reproduction and has no occurrence of spot-like defect in the silver image part. According to the present invention, a method for manufacturing a lithographic printing plate is provided, wherein an aluminum plate subjected to at least graining treatment and anodizing treatment is rinsed with water, then coated with a liquid containing physical development nuclei, and subsequently coated with a silver halide emulsion layer.Type: GrantFiled: March 8, 2002Date of Patent: February 17, 2004Assignee: Mitsubishi Paper Mills LimitedInventor: Jun Yamada
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Patent number: 6673508Abstract: A planographic printing plate material and a method of preparing a planographic printing plate are disclosed, the planographic printing plate material comprising a support and provided thereon, one or more structural layers containing light sensitive silver halide grains, organic silver salt grains, a reducing agent, a contrast-increasing agent and a physical developing nucleus.Type: GrantFiled: March 12, 2002Date of Patent: January 6, 2004Assignee: Konica CorporationInventor: Takeshi Sampei
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Patent number: 6670092Abstract: The invention relates to a recording material for the production of offset printing plates having a web- or plate-form support, a radiation-sensitive layer on the front of the support and a continuous layer on its back. The back layer has a glass transition temperature Tg of at least 55° C. and a surface resistance of 106&OHgr; or less.Type: GrantFiled: March 1, 2002Date of Patent: December 30, 2003Assignee: Agfa-GevaertInventors: Steffen Denzinger, Michael Dörr
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Publication number: 20030219681Abstract: A photosensitive printing element comprising a support; and a photopolymerizable layer comprising a photopolymerizable composition comprising at least one elastomeric binder, at least one monomer, an initiator having sensitivity to actinic radiation, and at least one photobleachable compound having sensitivity to actinic radiation; is described. Preferred photobleachable compounds are unsubstituted or substituted naphthylvinyl pyridines; unsubstituted or substituted styrylquinolines; diphenyl maleic anhydride; isomers of any of the foregoing; derivatives of any of the foregoing; and any combination of the foregoing. Such photosensitive printing elements are used to prepare flexographic printing plates and are useful in enhancing resolution and differentiating image areas from non-image areas in images produced therefrom by reducing the deleterious effect of scattered light.Type: ApplicationFiled: April 15, 2003Publication date: November 27, 2003Inventors: Lap Kin Cheng, Lap-Tak Andrew Cheng
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Publication number: 20030127016Abstract: There is disclosed a dampening composition for lithographic printing which comprises a (poly) propylene glycol alkyl ether and an ethylene oxide adduct of acetylene glycol.Type: ApplicationFiled: September 25, 2002Publication date: July 10, 2003Inventors: Hiroyuki Kurokawa, Toshiro Kondo
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Patent number: 6586167Abstract: A method for thermally forming images for plate making, which comprises forming an image for plate making by using a thermally processed image recording material comprising a silver salt of an organic acid, a reducing agent, a color image forming material and an organic binder on a support, wherein the image consists essentially of a developed silver image and a color forming dye image and the color forming dye image shows an absorbance for ultraviolet region higher than that for visible region and has a transmission density of 0.3 or more for the region of 360-450 nm. There are provided a thermally processed image recording material and method for thermally forming images that provide significant difference of ultraviolet absorption between image areas and non-image areas suitable for printing plate making.Type: GrantFiled: July 23, 2001Date of Patent: July 1, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazunobu Katoh, Toyohisa Oya
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Publication number: 20030118943Abstract: There is provided a method for making a lithographic printing plate from an original containing continuous tones comprising the steps of:Type: ApplicationFiled: August 11, 1997Publication date: June 26, 2003Inventors: PAUL DELABASTITA, JOHAN VAN HUNSEL
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Patent number: 6579657Abstract: A resist pattern, containing a material capable of generating an acid by exposure to light, is covered with a resist containing a material capable of crosslinkage in the presence of an acid. The acid is generated in the resist pattern by application of heat or by exposure to light, and a crosslinked layer is formed at the interface as a cover layer for the resist pattern, thereby causing the resist pattern to be thickened. Thus, the hole diameter of the resist pattern can be reduced, or the isolation width of a resist pattern can be reduced.Type: GrantFiled: March 27, 1998Date of Patent: June 17, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takeo Ishibashi, Toshiyuki Toyoshima, Keiichi Katayama, Ayumi Minamide
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Publication number: 20030096188Abstract: A planographic printing plate material and a method of preparing a planographic printing plate are disclosed, the planographic printing plate material comprising a support and provided thereon, one or more structural layers containing light sensitive silver halide grains, organic silver salt grains, a reducing agent, a contrast-increasing agent and a physical developing nucleus.Type: ApplicationFiled: March 12, 2002Publication date: May 22, 2003Inventor: Takeshi Sampei
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Patent number: 6544719Abstract: A cost efficient method of making a lithographic printing plate precursor is disclosed, the method comprising the steps of coating a silver halide emulsion layer on a hydrophilic base which is provided with physical development nuclei; simultaneously with the preceding step, coating on the emulsion layer a solution that induces silver salt diffusion transfer reversal development of the silver halide; allowing diffusion of complexed silver ions to the physical development nuclei, thereby forming silver metal that is deposited on the hydrophilic base; a wash-off step wherein the emulsion layer is removed from the silver metal. The material thus obtained can be exposed image-wise in heat-mode, e.g. by means of an infrared laser, thereby ablating the silver metal and revealing the hydrophilic base at exposed areas. Immediately after exposure, it can be used as a lithographic printing plate without the need for a wet processing step.Type: GrantFiled: June 18, 2002Date of Patent: April 8, 2003Assignee: Agfa-GevaertInventors: Paul Coppens, Ludo Vervloet
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Patent number: 6541176Abstract: There is disclosed a process for making a lithographic printing plate, which comprises subjecting a lithographic printing material having at least a silver halide emulsion layer and a physical development nuclei layer on a support and having a sensitivity at a wavelength of 400 nm to 440 nm of 20 &mgr;J/cm2 or less, and having substantially no sensitivity at a wavelength of 450 nm or longer to scanning exposure by a scanning type exposure device on which a violet laser diode is mounted, and then subjecting to developing treatment.Type: GrantFiled: April 2, 2001Date of Patent: April 1, 2003Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Takashi Miyazaki, Satoshi Shimonodan, Etsuji Tanaka, Motozo Yamano
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Publication number: 20030022096Abstract: There is disclosed a process for making a lithographic printing plate, which comprises subjecting a lithographic printing material having at least a silver halide emulsion layer and a physical development nuclei layer on a support and having a sensitivity at a wavelength of 400 nm to 440 nm of 20 &mgr;J/cm2 or less, and having substantially no sensitivity at a wavelength of 450 nm or longer to scanning exposure by a scanning type exposure device on which a violet laser diode is mounted, and then subjecting to developing treatment.Type: ApplicationFiled: April 2, 2001Publication date: January 30, 2003Inventors: Takashi Miyazaki, Satoshi Shimonodan, Etsuji Tanaka, Motozo Yamano
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Publication number: 20030013044Abstract: A cost efficient method of making a lithographic printing plate precursor is disclosed, the method comprising the steps ofType: ApplicationFiled: June 18, 2002Publication date: January 16, 2003Applicant: AGFA-GEVAERT N.V.Inventors: Paul Coppens, Ludo Vervloet
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Publication number: 20020177064Abstract: An object of the present invention is to provide a method for manufacturing an aluminum printing plate which is superior in fine line reproduction and has no occurrence of spot-like defect in the silver image part. According to the present invention, a method for manufacturing a lithographic printing plate is provided, wherein an aluminum plate subjected to at least graining treatment and anodizing treatment is rinsed with water, then coated with a liquid containing physical development nuclei, and subsequently coated with a silver halide emulsion layer.Type: ApplicationFiled: March 8, 2002Publication date: November 28, 2002Inventor: Jun Yamada
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Patent number: 6451506Abstract: A material for making a lithographic printing plate is provided comprising on a glass support a surface capable of being differentiated in ink accepting and ink repellant areas in accordance with an image pattern, characterised in that the glass support has a thickness of not more than 0.5 mm, a failure stress of at least 107 Pa and a Youngs modulus of not more than 1011 Pa.Type: GrantFiled: November 6, 1996Date of Patent: September 17, 2002Assignee: Agra-GevaertInventors: Bart Verlinden, Luc de Brabandere
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Patent number: 6420081Abstract: The invention relates to a process for the production of a photosensitive recording material for the production of offset printing plates which comprises a dimensionally stable, two-dimensional support of a metal or metal alloy and a silver halide-containing, photosensitive layer on the front of the support and a layer which essentially consists of an organic polymeric material and is resistant to processing chemicals on the back of the support. The layer on the back of the support is applied before the photosensitive coating on the front. The invention furthermore relates to a corresponding recording material in which the layer on the back comprises at least one organic polymer having a glass transition temperature Tg of 50° C. or above. Due to the back coating, the formation of local elements between the metallic support and the silver-containing layer is reliably prevented when the recording materials are stacked.Type: GrantFiled: April 26, 2001Date of Patent: July 16, 2002Assignee: AGFA-GevaertInventors: Andreas Elsässer, Michael Dörr, Steffen Denzinger, Paul Coppens
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Patent number: 6403282Abstract: A lithographic printing plate precursor comprises a grained and anodised aluminium substrate which has been treated with a solution of water-soluble salt of a Group IVa metal fluoride and over which is provided a metallic layer, preferably a silver layer. Imagewise exposure of the precursor by means of a high intensity laser beam allows for the direct provision of press ready plates showing high image quality and clean background, good press properties and high durability on press, without the requirement for the use of intermediate film and developer chemistry. The plate precursors show enhanced sensitivity on exposure, whereupon removal of the metallic layer occurs in the exposed areas.Type: GrantFiled: February 4, 2000Date of Patent: June 11, 2002Assignee: Agfa-GevaertInventors: Felton Rudolph Mayers, Philip John Watkiss, Frederick Claus Zumsteg, Jr.
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Patent number: 6376138Abstract: Growth and clustering of halftone dots is a drawback in the reproduction of halftoned continuous tone images on prior art recording materials. Certain thermographic materials show a local microdot shrink effect called negative cross-talk upon neighboring microdots when exposing a microdot. Exposing these materials according to the frequency modulated halftone data of an image results in better tone rendering and lower noise due to lower dot clustering or negative cross-talk characteristics.Type: GrantFiled: October 9, 1998Date of Patent: April 23, 2002Assignee: AGFA-GevaertInventors: Bart Horsten, Paul Delabastita, Jacobus Bosschaerts, Luc Schellekens
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Publication number: 20020028403Abstract: The invention relates to a process for the production of a photosensitive recording material for the production of offset printing plates which comprises a dimensionally stable, two-dimensional support of a metal or metal alloy and a silver halide-containing, photosensitive layer on the front of the support and a layer which essentially consists of an organic polymeric material and is resistant to processing chemicals on the back of the support. The layer on the back of the support is applied before the photosensitive coating on the front. The invention furthermore relates to a corresponding recording material in which the layer on the back comprises at least one organic polymer having a glass transition temperature Tg of 50° C. or above. Due to the back coating, the formation of local elements between the metallic support and the silver-containing layer is reliably prevented when the recording materials are stacked.Type: ApplicationFiled: April 26, 2001Publication date: March 7, 2002Inventors: Andreas Elsasser, Michael Dorr, Steffen Denzinger, Paul Coppens
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Patent number: 6300034Abstract: An apparatus is provided for processing an imaged element comprising a support, an image-receiving layer and a silver halide emulsion layer. The apparatus comprises a tank for holding a processing liquid, driving means for propelling the imaged element through the tank, guide means for directing the path of the imaged element through the tank and developer circulation means for promoting circulation of the processing liquid in the tank. The circulation means includes flow control means to provide substantially fresh processing liquid to the surface of the imaged element and to disperse exhausted processing liquid present at the surface of the element, thereby eliminating the difficulties associated with local developer exhaustion and ensuring that consistently high image quality is maintained across the whole area of the imaged element.Type: GrantFiled: September 29, 1999Date of Patent: October 9, 2001Assignee: Agfa-GevaertInventors: Simon John Blanchard, Malcolm Bryan Gwilt
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Patent number: 6284426Abstract: The present invention provides an alkaline processing solution comprising at least one silver halide solvent other than sulfite, characterized in that said alkaline processing solution further contains aluminium ions in an amount of at least 0.3 g/l. There is further provided a method for making a lithographic printing plate according to the DTR-process using an aqueous alkaline processing solution in the presence of at least one developing agent and at least one silver halide solvent, characterized in that said alkaline processing solution contains aluminium ions in an amount of at least 0.3 g/l.Type: GrantFiled: April 22, 1996Date of Patent: September 4, 2001Assignee: Agfa-GevaertInventors: Paul Coppens, Ludo Vervloet
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Patent number: 6277540Abstract: A lithographic printing plate precursor comprises a grained and anodised aluminium substrate coated with a layer of metallic silver on top of which is applied a composition comprising an oleophilising agent and a proteolytic enzyme. Imagewise exposure of the precursor by means of a high intensity laser beam allows for the direct provision of press ready plates showing excellent start-up and clean-up properties on press and providing high image quality and high printing durability without the requirement for the use of intermediate film and developer chemistry. On exposure of the plate precursor, removal of the metallic layer occurs in the exposed areas.Type: GrantFiled: February 7, 2000Date of Patent: August 21, 2001Assignee: Agfa-GevaertInventor: Philip John Watkiss
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Patent number: 6268110Abstract: A lithographic printing plate precursor comprises a grained and anodised aluminium substrate coated with a metallic layer, preferably a silver layer, on top of which is applied a layer of an oleophilic resin. Imagewise exposure of the precursor by means of a high intensity laser beam allows for the direct provision of press ready plates showing increased cleanliness in background areas and providing excellent start-up properties on press, high image quality and improved press durability, without the requirement for the use of intermediate film and developer chemistry, or the need for any post-exposure processing. Lower levels of metal deposition on the substrate surface result in the plate precursors showing enhanced sensitivity on exposure, whereupon removal of the metallic layer occurs in the exposed areas.Type: GrantFiled: February 7, 2000Date of Patent: July 31, 2001Assignee: Agfa-GevaertInventors: Allen Peter Gates, Philip John Watkiss, Fredrick Claus Zumsteg, Jr.
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Patent number: 6261733Abstract: According to the present invention, there is provided a silver salt diffusion transfer material, comprising on a hydrophilic surface of a support in the order given (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) a top layer containing gelatin, said silver halide emulsion being spectrally sensitized with a dye with a sensitizing maximum between 380 and 430 nm, characterized in that said top layer comprises a compound I and/or a compound IIType: GrantFiled: May 3, 2000Date of Patent: July 17, 2001Assignee: Agfa-GevaertInventors: Paul Coppens, Ludo Vervloet, Paul Callant
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Patent number: 6228557Abstract: An apparatus is provided for processing a lithographic printing plate precursor comprising an aluminium support, an image-receiving layer and a silver halide emulsion layer. The apparatus comprises a tank for holding a processing liquid, at least one set of driving rollers, at least one guide roller or guide plate and means for providing direct electrical contact between the lithographic printing plate precursor and other electrically conducting surfaces in the apparatus which are in contact with the processing liquid. A method of processing a lithographic printing plate precursor using the apparatus is also disclosed. Undesirable electrochemical cell formation during processing, and the consequent deleterious effects on silver image formation, are prevented and subsequent problems with poor plate run length can therefore be avoided.Type: GrantFiled: September 21, 1999Date of Patent: May 8, 2001Assignee: Agfa-GevaertInventors: Simon John Blanchard, John Michael Kitteridge
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Patent number: 6187503Abstract: There is disclosed a lithographic printing plate which comprises a grained and anodized aluminum support, a silver halide emulsion layer and a physical development nuclei layer between the aluminum support and the silver halide emulsion layer, and at least one selected from the group consisting of a phosphoric acid compound having a polyoxyalkylene unit and a water-soluble vinyl polymer having a carboxylic acid ester group being contained between the aluminum support and the silver halide emulsion layer.Type: GrantFiled: December 13, 1999Date of Patent: February 13, 2001Assignee: Mitsubishi Paper Mills LimitedInventor: Yoshihito Ohashi
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Patent number: 6174643Abstract: It is disclosed a process for developing a lithographic printing material having physical development nuclei between an aluminum support and a silver halide emulsion layer containing 95 mole % or more of silver chloride based on the total amount of the silver halide, when development of the lithographic printing material is carried out by using a developing solution having a pH of 13.0 at a development temperature of 25° C. and a development time of 40 seconds, a decreased amount of aluminum oxide in the aluminum support is 0.8 g or more per 1 m2 of the support, the improvement wherein the process for developing a lithographic printing plate comprises subjecting to development so as to control the decreased amount of the aluminum oxide being 0.6 g or less per 1 m2 by adjusting at least one of the pH of the developing solution, the development temperature and the developing time.Type: GrantFiled: March 24, 1999Date of Patent: January 16, 2001Assignee: Mitsubishi Paper Mills LimitedInventors: Hideo Kiyoyama, Kimihisa Hamazoe, Toshiro Kondo
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Patent number: 6162575Abstract: There is disclosed a process for making a lithographic printing plate, which comprises subjecting a lithographic printing material having physical development nuclei between an anodized aluminum support and a silver halide emulsion layer to exposure and then processing the lithographic printing material at least with a developing solution, wherein the developing solution contains an alkaline earth metal.Type: GrantFiled: October 22, 1999Date of Patent: December 19, 2000Assignee: Mitsubishi Paper Mills LimitedInventors: Hajime Fujioka, Toshiro Kondo
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Patent number: 6156475Abstract: An image forming process comprises the steps of image-wise exposing to light a light-sensitive material, heating the light-sensitive material to develop the silver halide within the exposed area and to harden the hardening layer, and removing the light-sensitive layer and the unhardened area of the hardening layer from the light-sensitive material with an etching solution to form a replica image of the hardened area on the support. The light-sensitive material comprises a support, a hardening layer and a light-sensitive layer in this order. The hardening layer contains an ethylenically unsaturated polymerizable compound represented by the formula (I).A(--NH--CO--Y--L--Q.sub.n).sub.m (I)in which A is an m-valent organic group having 1 to 50 carbon atoms; Y is --O-- or --NR--, wherein R is hydrogen or an alkyl group having 1 to 12 carbon atoms; L is an (n+1)-valent aliphatic group having 1 to 10 carbon atoms; Q is acryloyloxy or methacryloyloxy; n is 1, 2 or 3; and m is 2, 3, 4, 5 or 6.Type: GrantFiled: December 14, 1999Date of Patent: December 5, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiromitsu Yanaka
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Patent number: 6146819Abstract: There is disclosed a silver halide photographic light-sensitive material which comprises a polyester film support, at least one subbing layer containing a self-emulsifiable isocyanate compound having an ethylene oxide recurring unit and two or more isocyanate groups on the support, and at least one silver halide emulsion layer provided on said subbing layer.Type: GrantFiled: November 29, 1999Date of Patent: November 14, 2000Assignee: Mitsubishi Paper Mills LimitedInventors: Akira Furukawa, Daichi Miyake
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Patent number: 6146808Abstract: According to the present invention there is provided a method for preparing a silver salt diffusion transfer imaging element comprising the steps of coating in the order given on a grained and anodized side of an aluminum 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) optionally an antistress layer being in water permeable relationship with said image receiving layer, characterized in that said element before and/or after being coated with said image-receiving layer and before being coated with another layer is wetted with a fluidum with a conductivity of at least 1 .mu.S/cm at 25.degree. C. and then the wetted element is brought in contact with an earthed discharging means and dried before coating the following layer.Type: GrantFiled: November 5, 1999Date of Patent: November 14, 2000Assignee: AGFA-Gevaert, N.V.Inventor: Marcus Jonkheere
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Patent number: RE38322Abstract: According to the present invention there is provided a heat-sensitive imaging material for making lithographic printing plates which require no processing. The heat-sensitive imaging element comprises on a lithographic base having a hydrophilic surface a metallic or metal oxide layer and on top thereof an oleophobic oleophilic polymeric layer having a thickness of less than 5 &mgr;m and comprising a polymer containing phenolic groups.Type: GrantFiled: September 18, 2001Date of Patent: November 18, 2003Assignee: Agfa-GevaertInventors: Joan Vermeersch, Marc Van Damme, Guy Hauquier