Metal As Backing Or Protective Layer Patents (Class 430/275.1)
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Patent number: 6569601Abstract: A printing plate for computer-to plate lithography having a laser-ablatable member supported by a substrate. At least one portion of the laser-ablatable member is formed form an acrylic polymer containing laser-sensitive particles. The laser-sensitive particles absorb imaging radiation and cause the portion of the laser-ablatable member containing the laser sensitive particles and any overlying layers to be ablated.Type: GrantFiled: October 5, 2000Date of Patent: May 27, 2003Assignee: Alcoa Inc.Inventors: David S. Bennett, Sallie L. Blake, Robert E. Bombalski, Daniel L. Serafin, Jean Ann Skiles
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Publication number: 20030096191Abstract: A phenolic resin/silicone resin hybrid compound is obtained by effecting hydrolytic condensation of an organooxysilane in the co-presence of a phenolic resin. The hybrid compound is used as the base polymer in a resist for endowing a resist film with excellent adhesion to a metal substrate.Type: ApplicationFiled: October 11, 2002Publication date: May 22, 2003Inventors: Hideto Kato, Tomoyoshi Furihata
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Publication number: 20030091932Abstract: A heat-sensitive lithographic printing plate precursor is disclosed comprising a polymer which is soluble in an aqueous alkaline solution and which comprises at least one chromophoric moiety having a light absorption maximum in the wavelength range between 400 and 780 nm. Such materials show no dye stain after processing in areas where the coating has been removed by an alkaline developer.Type: ApplicationFiled: September 27, 2002Publication date: May 15, 2003Applicant: AGFA-GEVAERTInventors: Johan Loccufier, Marc Van Damme, Joan Vermeersch, Wim Sap
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Patent number: 6558872Abstract: Imagable precursors for masks and for electronic parts comprise a polymeric layer applied to a substrate. The layer comprises at least one polymer having infra-red absorbing groups carried as pendent groups on the polymer backbone. Certain infra-red absorbing groups may also act to insolubilize the polymer in a developer, until it is imagewise exposed to infra-red radiation. Imagewise application of heat, resulting from imagewise exposure of the precursor to infra-red radiation, renders the polymer layer more soluble in the developer than prior to exposure to the infra-red radiation.Type: GrantFiled: September 9, 2000Date of Patent: May 6, 2003Assignee: Kodak Polychrome Graphics LLCInventors: Kevin Barry Ray, Anthony Paul Kitson, Eduard Kottmair, Hans-Horst Glatt, Stefan Hilgart
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Patent number: 6558873Abstract: A lithographic printing plate precursor comprises a hydrophilized aluminum support having provided thereon an interlayer and a photopolymerizable photosensitive layer, the interlayer containing a polymer having a cationic group and a radical reactive group or containing a compound capable of forming a complex with ammonium, and the photopolymerizable photosensitive layer containing a photopolymerization initiator, a compound having an addition polymerizable ethylenically unsaturated bond, and a polymer binder.Type: GrantFiled: October 4, 2000Date of Patent: May 6, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhito Oshima, Tadahiro Sorori
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Patent number: 6548215Abstract: A method for producing printing plate precursors by dual-feed technology is described. The obtained printing plate precursors contain polymer particles in the photosensitive layer and show high print run stability.Type: GrantFiled: February 9, 2001Date of Patent: April 15, 2003Assignee: Kodak Polychrome Graphics LLCInventors: Mathias Jarek, Dietmar Frank
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Publication number: 20030068578Abstract: A lithographic printing plate precursor is disclosed which comprises (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon, the coating comprising an oleophilic layer which, upon image-wise exposure to heat or infrared light and subsequent immersion in an aqueous alkaline developer, dissolves in the developer at a higher dissolution rate in exposed areas than in unexposed areas, wherein the oleophilic layer comprises a polymer that is soluble in the developer and an organic dye in a amount sufficient to provide a visible color to the coating, characterized in that said organic dye does not reduce the dissolution rate of the unexposed areas in the developer.Type: ApplicationFiled: September 13, 2002Publication date: April 10, 2003Applicant: AGFA-GEVAERTInventors: Marc Van Damme, Joan Vermeersch, Geert Deroover
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Patent number: 6544716Abstract: An electro-optical storage system based on an optical head and a multilayer storage medium in a near-field configuration. The heat generated by absorption of a read/write beam adversely affects the interfacing between the optical head and the medium. The medium has a thermal insulation dielectric layer and/or a heat-dissipating layer to reduce thermal feedback from the medium to the optical head.Type: GrantFiled: June 19, 1998Date of Patent: April 8, 2003Assignee: Terastor CorporationInventors: Roger Hajjar, Sanjai Parthasarathi, Lu Cheng
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Patent number: 6541181Abstract: A positive acting, composition that can be heat-sensitive is presented, either coated on a lithographic base, or on a printing circuit board base, and comprises a water soluble heat-sensitive resin, a novel adhesion promoter and a radiation absorbing agent—a dye or a pigment. An excellent film forming polymer that comprises acetal units directly pendant from the polymer polyvinyl alcohol backbone may be the only binder resin, when other resins being optional. The solubility of the coated material in the areas exposed to near -IR laser radiation in mild alkaline developers becomes considerably higher, allowing to obtain high resolved patterns of the etch-resistant material on printing circuit boards or lithographic printing plates. The composition can be applied on the substrate from a liquid of laminated as a dry film. Sensitizers may be added to render the composition sensitive to radiation in a non-thermal sense.Type: GrantFiled: July 26, 2000Date of Patent: April 1, 2003Assignee: Creo IL. Ltd.Inventors: Moshe Levanon, Emmanuel Lurie, Sergei Malikov, Oleg Naigertsik, Larisa Postel
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Patent number: 6521391Abstract: A printing plate for computer-to plate lithography having a laser-ablatable member supported by a substrate. At least one portion of the laser-ablatable member is formed form an acrylic polymer containing laser-sensitive particles. The laser-sensitive particles absorb imaging radiation and cause the portion of the laser-ablatable member containing the laser sensitive particles and any overlying layers to be ablated.Type: GrantFiled: September 14, 2000Date of Patent: February 18, 2003Assignee: Alcoa Inc.Inventors: David S. Bennett, Sallie L. Blake, Daniel L. Serafin, Jean Ann Skiles, Robert E. Bombalski, Clinton S. Zediak, Gary A. Nitowski, Joseph D. Guthrie
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Patent number: 6514657Abstract: The present invention provides a photosensitive lithographic printing plate with a long press life, high sensitivity, and excellent storage stability, and a photosensitive composition for a lithographic printing plate for producing such a photosensitive lithographic printing plate. The photosensitive composition for the lithographic printing plate includes (A) a binder resin, (B) a diazo resin, (C) a monomer or oligomer, a molecule of which has at least two polymerizable ethylenically unsaturated double bonds, (D) a photopolymerization initiator, (E) an o-tert-butylphenol derivative, and (F) a 2-mercaptoimidazole derivative such as 2-mercaptobenzimidazole.Type: GrantFiled: July 17, 2001Date of Patent: February 4, 2003Assignee: Kodak Polychrome Graphics, L.L.C.Inventors: Hideo Sakurai, Eiji Hayakawa
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Publication number: 20030017413Abstract: In accordance with the present invention there is provided an imaging element for lithographic offset printing. The imaging element comprises hydrophobic polymer particles in an aqueous medium, a substance for converting light into heat, and a metal complex. The imaging element may be used for printing long run lengths on lower quality paper and in the presence of set-off powder. The imaging element may be imaged and developed on-press and may be sprayed onto a hydrophilic surface to create a printing surface that may be processed wholly on-press. The hydrophilic surface may be a printing plate substrate, the printing cylinder of a printing press, or a seamless sleeve around the printing cylinder of a printing press. This cylinder may be conventional or seamless.Type: ApplicationFiled: July 23, 2001Publication date: January 23, 2003Inventors: Jonathan William Goodin, John Emans, Yisong Yu, Katja Rademacher
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Publication number: 20030008236Abstract: An optical information recording medium including a substrate, a light absorbing layer which is located overlying the substrate and in which marks are formed to store information and a light reflection layer located overlying the light absorbing layer including a crystal, wherein the optical information recording medium satisfies the relationship, Lt/4≦Lc≦Lm, wherein Lc represents the average particle diameter of the crystal of the light reflection layer, Lm represents the minimum length of the marks, and Lt represents the thickness of the light reflection layer.Type: ApplicationFiled: June 24, 2002Publication date: January 9, 2003Applicant: Ricoh Company, Ltd.Inventors: Katsuyuki Yamada, Shinya Narumi
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Publication number: 20020182538Abstract: A lithographic printing plate precursor is disclosed, comprising a metal support having formed thereon an anodic oxide film, and an image-forming layer containing a light-to-heat converting agent, or a light-sensitive layer capable of image-forming with infrared laser exposure provided in this order from the support.Type: ApplicationFiled: December 20, 2001Publication date: December 5, 2002Inventors: Tadabumi Tomita, Atsushi Matsuura, Akio Uesugi, Katsuyuki Teraoka, Hisashi Hotta
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Patent number: 6482570Abstract: A method for producing a lithographic printing plate which comprises imagewise irradiating a lithographic printing plate precursor with a laser beam to make the irradiated part hydrophilic, wherein the lithographic printing plate precursor comprises a metal compound selected from at least one metal element belonging to Group 4 to Group 6 of the Periodic Table and an oleophilic layer provided on the surface thereof.Type: GrantFiled: April 14, 2000Date of Patent: November 19, 2002Assignee: Fuji Photo Film Co., Ltd.Inventor: Hisashi Hotta
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Publication number: 20020164535Abstract: A thermal mass transfer donor element is provided that includes a thermal transfer layer and a light-to-heat conversion layer, wherein the light-to-heat conversion layer has at least two regions exhibiting different absorption coefficients. The thermal transfer donor elements provided can improve imaging performance by increasing transfer sensitivity and decreasing imaging defects.Type: ApplicationFiled: April 30, 2002Publication date: November 7, 2002Applicant: 3M Innovative Properties CompanyInventors: Thomas R. Hoffend, John S. Staral
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Publication number: 20020155369Abstract: A method for producing printing plate precursors by dual-feed technology is described. The obtained printing plate precursors contain polymer particles in the photosensitive layer and show high print run stability.Type: ApplicationFiled: February 9, 2001Publication date: October 24, 2002Applicant: KODAK POLYCHROME GRAPHICS LLC.Inventors: Mathias Jarek, Dietmar Frank
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Publication number: 20020150750Abstract: A lithographic sheet product having a substrate with a roll textured suiface covered by a pretreatment layer. The pretreatment layer enhances adhesion of a printing composition to the sheet product and is composed of a polymer selected from the group consisting of polymers of acrylic acid, polymers of methacrylic acid, an organophosphorous polymer and copolymers of an organophosphorous compound and acrylic acid or methacrylic acid. Dopant particles of alumina, silica, titanium dioxide or a black dye or pigment may be added to the pretreatment layer to reduce the gloss and reflectance of the pretreatment layer in a printing process. Etching of the substrate also reduces gloss and reflectance.Type: ApplicationFiled: August 29, 2001Publication date: October 17, 2002Inventors: David Bennett, Sallie L. Blake, Robert E. Bombalski, Joseph D. Guthrie, Daniel L. Serafin
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Patent number: 6465152Abstract: An imaging member is composed of a hydrophilic imaging layer having a hydrophilic heat-sensitive polymer containing heat-activatable thiosulfate groups, and optionally a photothermal conversion material. Upon application of energy that generates heat, such as from IR irradiation, the polymer is crosslinked and rendered more hydrophobic. The imaging layer is disposed on an interlayer on a support, which interlayer comprises a Group IVB element (such as titanium, hafnium or zirconium) compound for improved mechanical and imaging properties. The exposed imaging member can be contacted with a lithographic printing ink and used for printing with or without post-imaging wet processing. This imaging member is particularly useful for direct write imaging using IR lasers or thermal printing heads.Type: GrantFiled: June 26, 2000Date of Patent: October 15, 2002Assignee: Kodak Polychrome Graphics LLCInventors: Thap DoMinh, Shiying Zheng, Jennifer R. Kersten
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Publication number: 20020132187Abstract: A negative-working heat-sensitive material for making a lithographic printing plate by direct-to-plate recording is disclosed which comprises in the order given a lithographic base having a hydrophilic surface, an oleophilic imaging layer and a cross-linked hydrophilic upper layer, characterize in that the oleophilic imaging layer comprises at least one transition metal complex of an organic acid. Materials according to the invention are characterized by an increased run length and can be used as a printing plate immediately after exposure.Type: ApplicationFiled: November 19, 2001Publication date: September 19, 2002Applicant: Agfa-GevaertInventors: Marc Van Damme, Wim Sap
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Patent number: 6423470Abstract: A covercoated base substrate, comprising a base substrate and a photoimageable covercoat layer having a lead portion extending beyond at least one, wherein the lead portion has a controlled offset distance from the edge, and a printed circuit made from such base substrate having at least one conductor including a trace and a lead wherein the covercoat has a lead portion covering at least one lead. A base substrate may also have an opening formed therethrough, the opening defining an interior edge wherein the covercoat extends beyond that interior edge.Type: GrantFiled: August 20, 1999Date of Patent: July 23, 2002Assignee: 3M Innovative Properties CompanyInventors: John B. Scheibner, Robert M. Anderton, David L. Buster, Kristine J. Williams
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Patent number: 6423456Abstract: A composition used as a resist in the manufacture of electronic parts, for example printed circuits, and which is rendered soluble in a developer by patternwise delivery of heat, comprises a polymer of general formula (I), wherein R1 represents a hydrogen atom or alkyl group, R2 represents a hydrogen atom or alkyl group, R3 represents a hydrogen atom or alkyl group, and R4 represents hydroxyalkyl group, and wherein the ratio n/m is in the range 10/1 to 1/10.Type: GrantFiled: April 9, 2001Date of Patent: July 23, 2002Assignee: Kodak Polychrome Graphics LLCInventors: Anthony Paul Kitson, Peter Andrew Reath Bennett, Kevin Barry Ray
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Publication number: 20020094490Abstract: Disclosed is a presensitized plate, having intermediate and photosensitive layers sequentially provided on a support for a lithographic printing plate, which is provided by subjecting an aluminum plate to graining, alkali etching and anodizing treatments. The amount of alkali etching is set in a range of 0.5 to 4 g/m2 for the alkali etching treatment, and an average thickness of thinnest 10% of the photosensitive layer on convex portions of a surface of the support is set in a range of 0.2 to 2 &mgr;m. This presensitized plate has wide development latitude, makes it difficult for scratch-like non-image portions to be generated, and facilitates handling in usual operation.Type: ApplicationFiled: May 15, 2001Publication date: July 18, 2002Inventors: Tadashi Endo, Yoshitaka Masuda, Atsuo Nishino, Akio Uesugi, Katsuyuki Teraoka, Hisashi Hotta
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Publication number: 20020086236Abstract: A photoimageable, aqueous acid soluble polyimide polymer comprising an anhydride, including a substituted benzophenone nucleus, a diamine reacted with the anhydride to form a photosensitive polymer intermediate, and at least 60 Mole % of solubilizing amine reacted with the photosensitive polymer intermediate to form the photoimageable, aqueous acid soluble polyimide polymer. An emulsion for electrophoretic deposition of a coating of a photoimageable, aqueous acid soluble polyimide polymer comprises a dispersed phase, including the photoimageable aqueous acid soluble polyimide polymer, dissolved in an organic solvent and a dispersion phase including a coalescence promoter and water. The emulsion may be applied, by electrophoretic deposition, to a conductive structure to provide a photoimageable coating on the conductive structure.Type: ApplicationFiled: January 3, 2002Publication date: July 4, 2002Applicant: 3M Innovative Properties CompanyInventors: Hany B. Eitouni, Alphonsus V. Pocius, John B. Scheibner, Nanayakkara L.D. Somasiri, Nicholas A. Stacey, Alfred Viehbeck
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Publication number: 20020051934Abstract: A negative image-recording material which can be imagewise exposed to IR radiation from IR lasers and ensures direct image formation from digital data of a computer or the like. The material, when used in a lithographic printing plate, ensures good hardenability in an image area and exhibits good printing durability, even if not heated for image formation, and ensures a large number of good prints from the printing plate. The recording material contains (A) an IR absorber, (B) a radical generator having an onium salt structure, (C) a radical-polymerizing compound, and (D) a reducing additive, and this is imagewise exposed to IR radiation for image formation. Preferably, the reducing additive (D) is highly reactive with radicals and a reaction product with a radical has high reductivity. Preferred examples of the reducing additive are ether-type hydrogen donors, alcohol-type hydrogen donors, vinyl ethers and phosphine-type compounds.Type: ApplicationFiled: August 14, 2001Publication date: May 2, 2002Inventors: Ippei Nakamura, Tadahiro Sorori
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Patent number: 6379865Abstract: A photoimageable, aqueous acid soluble polyimide polymer comprising an anhydride, including a substituted benzophenone nucleus, a diamine reacted with the anhydride to form a photosensitive polymer intermediate, and at least 60 Mole % of solubilizing amine reacted with the photosensitive polymer intermediate to form the photoimageable, aqueous acid soluble polyimide polymer. An emulsion for electrophoretic deposition of a coating of a photoimageable, aqueous acid soluble polyimide polymer comprises a dispersed phase, including the photoimageable aqueous acid soluble polyimide polymer, dissolved in an organic solvent and a dispersion phase including a coalescence promoter and water. The emulsion may be applied, by electrophoretic deposition, to a conductive structure to provide a photoimageable coating on the conductive structure.Type: GrantFiled: April 11, 2000Date of Patent: April 30, 2002Assignee: 3M Innovative Properties CompanyInventors: Guoping Mao, Hany B. Eitouni, Alphonsus V. Pocius, John B. Scheibner, Nanayakkara L. D. Somasiri, Nicholas A. Stacey, Alfred Viehbeck
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Publication number: 20020048718Abstract: A positive-working imaging member is composed of a heat-sensitive surface imageable layer having a heat-sensitive polymer containing heat-activatable sulfoimino, sulfoalkyl, or sulfoamide groups, and a photothermal conversion material. Upon application of thermal energy, such as from IR irradiation, the sulfonate groups decompose rendering exposed areas more hydrophilic. The exposed imaging member can be contacted with a lithographic printing ink and used for printing without post-imaging wet processing. This imaging member is particularly useful for direct write imaging using IR lasers or thermal printing heads.Type: ApplicationFiled: November 1, 1999Publication date: April 25, 2002Inventors: SHIYING ZHENG, THAP DOMINH
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Patent number: 6365319Abstract: A self-contained photohardenable imaging assembly comprising in order: a first transparent support; an imaging layer comprising a developer material and a plurality of photohardenable microcapsules encapsulating a color precursor, and a second opaque support, wherein the opaque support comprises a barrier layer that exhibits a low water vapor transmission rate, which barrier layer comprises a metallic material. The imaging assembly has been found to provide better image quality and more consistence sensitometric response to pressure development.Type: GrantFiled: April 20, 2000Date of Patent: April 2, 2002Assignee: Eastman Kodak CompanyInventors: Terry A. Heath, Yongcai Wang, Charles C. Anderson
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Patent number: 6350555Abstract: A direct write imaging film includes a first layer disposed on a substrate and a second layer atop the first layer. The first layer is capable of being dispersed or otherwise disrupted by a first wavelength of light so as to decrease the adhesion of the second layer to the remainder of the film. The second layer has a relatively strong absorption for a second wavelength of light which is shorter than the first wavelength. In the use of the film, light of the first wavelength is used to disrupt selected portions of the first layer; and then, overlying portions of the second layer are removed to produce an image which is strongly absorbing of the second wavelength, and is defined by the remaining portions of the second layer.Type: GrantFiled: January 13, 1999Date of Patent: February 26, 2002Assignee: Precision Coatings, Inc.Inventor: Norman Sweet
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Patent number: 6346364Abstract: An optical information recording medium comprising a light transmitting substrate, a light absorptive layer containing at least one light absorbing substance formed on the substrate and a light reflective layer made of a metal film formed on the light absorptive layer, wherein an optical parameter represented by &rgr;=nabsdabs/&lgr; wherein nabs is the real part of the complex refractive index of the light absorptive layer, dabs is the average thickness of the light absorptive layer and &lgr; is the wavelength of a reading laser beam, is 0.6<&rgr;<1.6.Type: GrantFiled: June 14, 2000Date of Patent: February 12, 2002Assignee: Taiyo Yuden Co., Ltd.Inventors: Emiko Hamada, Yuji Arai, Yosikazu Takagisi, Takashi Ishiguro
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Publication number: 20020015914Abstract: An information recording medium which includes at least a recording layer, and first and second metallic layers disposed on an opposite side of an energy beam incident side of the recording layer and having different compositions, and in which the first one of the first and second metallic layers located closer to the recording layer contains Al, Ag, Au, Pt and Pd as its main components and a sum of contents of these atoms is 60% or more. Thereby recording and reproducing of information can be realized with a high reliability.Type: ApplicationFiled: September 24, 2001Publication date: February 7, 2002Inventors: Makoto Miyamoto, Motoyasu Terao, Yukio Fukui, Nobuhiro Tokushuku, Keikichi Andoo, Tetsuya Nishida, Akemi Hirotsune, Yasushi Miyauchi, Koichi Moritani
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Patent number: 6335142Abstract: Light absorbing coating with high absorption capacity. This coating comprises at least one thin optically discontinuous metal layer (8), absorbent within a determined spectral range in the visible-near infrared range, and at least one dielectric layer (10) transparent within this range and formed on the thin layer. Application to imagery.Type: GrantFiled: November 16, 1998Date of Patent: January 1, 2002Assignee: Commissariat a l'Energie AtomiqueInventors: Etienne Quesnel, Patrick Chaton
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Publication number: 20010055729Abstract: A method for producing at least one decorative pattern on an item includes providing a support having at least one surface and treating a first portion of the surface of the support. The treatment renders the first portion of the surface resistant to metallic coating by at least one type of metallic coating procedure. In addition, the method includes coating a second portion of the surface of the support with a metallic coating such that the metallic coating delimits a decorative pattern. The first portion of the surface corresponds to the decorative pattern.Type: ApplicationFiled: April 3, 2001Publication date: December 27, 2001Inventors: Alain Bethune, Sophie Helene Vayrette
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Patent number: 6309799Abstract: The invention relates to a process for producing a printing form, in which a covering layer (5) is applied to a first radiation-sensitive layer (4) arranged on a carrier (1), the applied covering layer (5) is structured in accordance with a pattern to be printed, in order to form an irradiation mask (5′), and the radiation-sensitive layer (4) is irradiated and developed. In this way, in the production of printing forms, an irradiation mask (5′) can be applied very precisely in accordance with a pattern to be printed later.Type: GrantFiled: November 3, 1998Date of Patent: October 30, 2001Assignee: Schablonentechnik Kufstein AktiengesellschaftInventor: Siegfried Rückl
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Patent number: 6294311Abstract: Imageable elements useful as lithographic printing members are disclosed. The elements contain a substrate, an underlayer, and a top layer. The underlayer contains a combination of polymeric materials that provides resistance both to fountain solution and to aggressive washes, such as a UV wash. The underlayer can be used in either thermally imageable or photochemically imageable elements.Type: GrantFiled: December 22, 1999Date of Patent: September 25, 2001Assignee: Kodak Polychrome Graphics LLCInventors: Ken-ichi Shimazu, Jayanti Patel, Jianbing Huang, Nishith Merchant, Mathias Jarek
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Patent number: 6255033Abstract: A positive acting, heat-sensitive composition is presented, either coated on a lithographic base, or on a printing circuit board base, and comprises a water insoluble heat-sensitive resin, a novel adhesion promoter and a radiation absorbing agent—a dye or a pigment. An excellent film forming polymer that comprises acetal units directly pendant from the polymer polyvinyl alcohol backbone may be the only binder resin, when other resins being optional. The solubility of the coated material in the areas exposed to near-IR laser radiation in mild alkaline developers becomes considerably higher, allowing to obtain high resolved patterns of the etch-resistant material on printing circuit boards or lithographic printing plates. The composition can be applied on the substrate from a liquid or laminated as a dry film.Type: GrantFiled: July 30, 1999Date of Patent: July 3, 2001Assignee: Creo, Ltd.Inventors: Moshe Levanon, Emmanuel Lurie, Sergei Malikov, Oleg Naigertsik, Larisa Postel
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Patent number: 6242152Abstract: The present invention provides a thermal transfer donor element that includes a transfer layer comprising a fully or partially crosslinked material. The crosslinked transfer layer can be imagewise transferred from the donor element to a proximate receptor by imaging the donor element with radiation that can be absorbed and converted into heat by a light-to-heat converter included in the donor element. The heat generated during imaging is sufficient to effect transfer of the crosslinked transfer layer.Type: GrantFiled: May 3, 2000Date of Patent: June 5, 2001Assignee: 3M Innovative PropertiesInventors: John S. Staral, Jeffrey C. Chang, Kenneth L. Hanzalik
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Patent number: 6238839Abstract: A lithographic printing plate precursor which comprises a metal support having provided thereon a heat-insulating layer, a metal layer having a hydrophilic surface, and a lipophilic layer which is abraded by heating or whose solubility to alkali is transformed by heating, in this order from the support.Type: GrantFiled: August 22, 2000Date of Patent: May 29, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadabumi Tomita, Hisashi Hotta, Akio Uesugi
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Patent number: 6232038Abstract: A photosensitive composition comprising (a) an ethylenically unsaturated double bond-containing compound, (b) a sensitizing dye and (c) a photopolymerization initiator, wherein the sensitizing dye is a phthalocyanine compound showing the maximum absorption within a range of from 750 to 1,200 nm.Type: GrantFiled: October 6, 1999Date of Patent: May 15, 2001Assignee: Mitsubishi Chemical CorporationInventors: Ryuichiro Takasaki, Toshiyuki Urano
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Patent number: 6228555Abstract: A thermal mass transfer donor element is provided that includes a thermal transfer layer and a light-to-heat conversion layer, wherein the light-to-heat conversion layer has at least two regions exhibiting different absorption coefficients. The thermal transfer donor elements provided can improve imaging performance by increasing transfer sensitivity and decreasing imaging defects.Type: GrantFiled: December 28, 1999Date of Patent: May 8, 2001Assignee: 3M Innovative Properties CompanyInventors: Thomas R. Hoffend, Jr., John S. Staral
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Patent number: 6218073Abstract: A heat-sensitive composition is disclosed which includes a substance which absorbs light and generates heat, an anionic self water-dispersible resin particle having an acid value of 10 to 300 and an average particle diameter of 0.005 to 15 &mgr;m, and a fluorine base surfactant. An original plate for a lithographic printing plate is disclosed which includes an ordinary negative- or positive-type PS plate having coated thereon the heat-sensitive composition. The original plate is image-wise exposed with high energy density light based on digital image information from a computer, subjected to first development with an aqueous alkali solution, flood exposure with active light, a second development with a developer for a negative or a positive, and post-treatment to obtain a printing plate.Type: GrantFiled: March 18, 1999Date of Patent: April 17, 2001Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Shinji Shimizu, Yasuyuki Watanabe, Yasuhiko Kojima, Koji Oe, Nansei Tasiro
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Patent number: 6168901Abstract: There is disclosed a recordable optical element that has a substrate and on the surface of the substrate, a recording layer and a light reflecting layer. The recording layer has a material with the formula TeaGebCcHdOe wherein a, b, c, d, and e are atomic percents and (c+d)>40, d>10, a>5, b>5, and e≧0 such that a+b+c+d+e=100; and the reflecting layer and the recording layer being selected such that the element Rmax or Rmin (element reflectivity) is about or greater than 70% at about 780 nm.Type: GrantFiled: March 7, 1995Date of Patent: January 2, 2001Assignee: Eastman Kodak CompanyInventors: Yuan-Sheng Tyan, Pranab K Raychaudhuri, Kee-Chuan Pan, George R Olin
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Patent number: 6168898Abstract: A positive acting, photoimageable composition having, a photoacid generator capable of generating an acid upon exposure to actinic radiation, an organic acid anhydride polymer, an epoxy, a nitrogen-containing curing catalyst, and an optional phenol-containing monomer or polymer. A photographic element has this composition coated and dried on a substrate. A positive acting image is produced by imagewise exposing the element to actinic radiation, optionally postbaking and development with a liquid developer.Type: GrantFiled: February 17, 1998Date of Patent: January 2, 2001Assignee: Isola Laminate Systems Corp.Inventors: Chengzeng Xu, Ming Mei Huang, Laura M. Leyrer