Metal Patents (Class 430/524)
  • Patent number: 4284711
    Abstract: An improved presensitized printing plate comprises at least one metal working surface, a cobalt layer electroplated on the outer working surface of said at least one metal working surface, and a coating of light sensitive material directly deposited on said cobalt layer.A method is also described which makes use of metallic cobalt for the preparation of presensitized printing plates in order to provide layers that are in themselves adherent to light sensitive materials without the need of using adhesives, and are useful for directly depositing light sensitive coatings thereon.
    Type: Grant
    Filed: August 21, 1979
    Date of Patent: August 18, 1981
    Inventor: Armando Birlain-Noris
  • Patent number: 4283481
    Abstract: A photopolymerizable composition and photosensitive elements produced therefrom are disclosed. The photopolymerizable composition includes: (a) a monomer component, (b) a polymer component, (c) a photopolymerization initiator, and (d) an activator.The monomer component contains at least one water soluble, monofunctional unsaturated ethylenic monomer or the combination of such a monomer and at least one polyfunctional unsaturated ethylenic monomer.The polymer component includes a partially saponified water soluble, polyvinyl acetate polymer compatible with the monomer components. The polyvinyl acetate polymer contains both acetyl and hydroxyl groups and has a polymerization degree of from 300-2000. The degree of saponification of the polymer is desirably in the range of 65 to 99 percent.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: August 11, 1981
    Assignee: Napp Systems (USA) Inc.
    Inventors: Sakuo Okai, Koichi Kimoto
  • Patent number: 4279945
    Abstract: A process of preparing magnetic recording elements containing substantially transparent magnetic recording layer which exhibit excellent magnetic and reproducing characteristics is as follows:(a.) forming a substantially homogeneous dispersion of acicular magnetizable particles in a medium comprising a solution of substantially transparent binder in solvent using particles having an average width of less than about 0.06 micron and an average length up to about 1 micron; the concentration of the binder being at least about 10 parts per 100 parts, by weight, of the particles; up to about 30 parts, by weight, for particles having an average length of at least about 0.06 micron and up to about 40 parts, by weight, for particles having an average length of less than about 0.06 micron,(b.) coating a support with the dispersion in an amount sufficient to provide a final dry layer thickness up to about 5 microns,(c.) removing substantially all solvent from the layer and(d.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: July 21, 1981
    Assignee: Eastman Kodak Company
    Inventors: Roger G. L. Audran, Albert P. Huguenard
  • Patent number: 4266009
    Abstract: A novel imaging material comprising a substrate; a lead layer thereon including at least 20% by weight of lead and having a substantially dome shaped grain structure; and a stabilizing layer formed on said lead layer and comprising a specific metallic element or an organic polymer. The imaging material has a gradation, an excellent resolution and an improved storage stability. The imaging material can form an image thereon by a dry process even in a light room without the conventional development step.
    Type: Grant
    Filed: November 2, 1978
    Date of Patent: May 5, 1981
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Takeshi Ueda, Kiichiro Sasaguri, Hidehiko Kobayashi
  • Patent number: 4264707
    Abstract: A photographic material comprising a light sensitive photographic layer and a support having thereon in order a layer containing alumina sol including colloidal particles and an electrolyte and a layer containing a hydrophobic polymer.
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: April 28, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Takahiro Uozumi, Tohru Kobayashi, Koichi Nagayasu
  • Patent number: 4234670
    Abstract: A method for producing visible images in certain charge sensitive, dry processable recording elements. Image recording is accomplished by flowing, in a resistive recording element containing a reducible metal compound, an imagewise pattern of electrical current of sufficient magnitude to produce therein a storable latent image. The metal compound in the latent image areas is subsequently reduced by a dry development technique to produce a visible image.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: November 18, 1980
    Assignee: Eastman Kodak Company
    Inventors: Joseph Y. Kaukeinen, Duane A. Rockafellow
  • Patent number: 4234625
    Abstract: A process of producing a material sensitive to an electromagnetic and corpuscular radiation involves successively depositing, onto a transparent substrate, a layer of a semiconductor, a barrier layer inert to the semiconductor layer and a layer of a metal capable of reacting with the semiconductor layer under the effect of the electromagnetic and corpuscular radiation with the formation of the reaction products. After deposition of the metal layer, there is performed annealing at a temperature equal to or exceeding the temperature of diffusion of the material of the barrier layer into the material of the layers adjacent thereto. The annealing is conducted for a period sufficient for a partial or a complete dissolution of the barrier layer.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: November 18, 1980
    Inventors: Vyacheslav V. Petrov, Andrei A. Krjuchin
  • Patent number: 4211560
    Abstract: A process for producing an image which comprises the steps of:(1) applying to the surface of a substrate the surface of a photosensitive layer, the other surface of the photosensitive layer being adhered to a substantially transparent film support which is soluble or dispersible in a developer consisting essentially of a liquid capable of substantially dissolving or dispersing therein the areas of the layer other than those having a polymeric image produced by imagewise exposure in the step (2) below;(2) exposing the photosensitive layer, imagewise, to actinic radiation to form a polymeric image in the layer; and(3) washing away with the developer the film support and the areas of the layer other than those having the polymeric image to form an image of a polymeric material on the substrate.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: July 8, 1980
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Tadashi Taguchi, Noboru Fujikawa, Mitsuo Kohno, Katsumi Yoshitake, Kunio Satake
  • Patent number: 4210449
    Abstract: Copolymers of glycidyl methacrylate and allyl glycidyl ether having pendant epoxy groups, having an inherent viscosity of at least about 0.25, preferably within the range of about 0.25 to about 0.38, and an epoxy equivalent of at least about 0.65 epoxide equivalent per 100 g. of polymer are provided which upon admixture with a radiation-sensitive aryldiazonium salt provide compositions which exhibit improved sensitivity, curing rates and other properties. Articles for recording and storing information from a laser source and other articles such as microfilm are derived from such compositions by subjecting a coated substrate to an energy source of sufficient intensity to decompose the radiation-sensitive catalyst and thus effect polymerization via the epoxy groups of the copolymer.
    Type: Grant
    Filed: February 4, 1975
    Date of Patent: July 1, 1980
    Assignee: American Can Company
    Inventors: Sheldon I. Schlesinger, Veronica Cochran
  • Patent number: 4210569
    Abstract: An adhesive antihalation composition for making metal-backed photopolymeric printing forms, according to the invention, consists of an adhesive comprising a product of copolymerization of diphenylol-propane epoxy resin with a molecular weight from 360 to 3000 and phenol-formaldehyde novolac resin with a molecular weight from 400 to 1000 in a weight ratio of 1:1 in the product, an antihalation component - iron oxide or chromium oxide, a solvent - a mixture of ethanol and acetone, the above components being used in the composition in the following proportions (in % by weight):antihalation component:10-15adhesive:35-45solvent:55-40.This composition is simple, free from toxic substances and stable during storage. When used, it ensures high adhesion of printing elements to a metal support, as high as 300-320 kfg/cm.sup.2.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: July 1, 1980
    Inventors: Valentina G. Sysjuk, Eduard T. Lazarenko, Yaroslav A. Ovdienko, Vladislav V. Bernatsek, Vladislav F. Jurin, Anatoly F. Nikolaev
  • Patent number: 4210081
    Abstract: Planographic printing plates are made by depositing on a support sheet an aqueous mixture comprising a hydroxyl group-containing polymer free from acid groups, an insolubilizing agent, a synthetic polymer containing acid groups and preferably a filler, and then drying the deposited layer.The process can be operated at near ambient temperature to give rapidly and reliably a durable water-insoluble hydrophilic layer.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: July 1, 1980
    Assignee: Gastetner Limited
    Inventor: John H. Croker
  • Patent number: 4205989
    Abstract: There is disclosed a dry system image producing element comprising a substrate, a thin metal layer and a photosensitive layer. After exposing the element to light through a desired pattern, the photosensitive layer is peeled off to obtain a light barrier pattern made from the metal on the substrate corresponding to the photosensitized portion.
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: June 3, 1980
    Assignee: Kimoto & Co., Ltd.
    Inventors: Takeo Moriya, Toshio Yamagata
  • Patent number: 4200463
    Abstract: A protective coating composition for photoresist layers comprising an aqueous solution of a vinyl alcohol polymer, at least one surfactant having wetting properties and at least one surfactant having lubricant properties is disclosed. An improved process for forming a photoresist pattern employing this protective coating composition is also disclosed. The composition and process are particularly useful in the fabrication of semiconductor devices.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: April 29, 1980
    Assignee: Motorola, Inc.
    Inventor: Dervin L. Flowers
  • Patent number: 4199615
    Abstract: A dry-process imaging film which is sensitive to, and substantially simultaneously imaged and developed by, electromagnetic radiation above a threshold value applied thereto through an imaging mask. The film, in its preferred form, comprises a thin solid continuous, non-particulate film of a dispersion imaging material provided with a thin, flexible, protective overlayer of a polymeric resin. The film of dispersion imaging material is carried or supported on a flexible plastic substrate which may be transparent or light reflective.
    Type: Grant
    Filed: February 18, 1977
    Date of Patent: April 22, 1980
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Harvey H. Wacks, Donald J. Sarrach
  • Patent number: 4198236
    Abstract: A lithographic printing plate is prepared from a layer of a photopolymerizable composition comprising an oleophilic macromolecular organic binder and a leachable hydrophilic ethylenically unsaturated compound by exposing the layer and then leaching the compound from the unexposed areas by treating with a suitable developing solvent, preferably water, producing an oleophilic surface. A similar plate may be prepared from a composition containing a hydrophilic binder and oleophilic leachable compound by imagewise exposure and solvent leaching producing an oleophilic surface in exposed areas and a hydrophilic surface in unexposed areas.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: April 15, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert P. Held
  • Patent number: 4197132
    Abstract: In a photoresist material comprising a support having formed thereon a layer of a photopolymerizable composition comprising a film forming polymer, a monomer having at least one addition polymerizable unsaturated bond, and a photopolymerization initiator, the adhesive property and the light-sensitivity of the layer of the photopolymerizable composition are improved by incorporating a rosin tackifier in the layer.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: April 8, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenichiro Yazawa, Eiichi Hasegawa
  • Patent number: 4197124
    Abstract: A planographic printing plate material comprising a support and a light sensitive layer provided on the support, the light-sensitive layer being composed of (A) an inorganic material; (B) at least one metal and/or metal compound [(A)/(B) are capable of reacting with each other upon application of electromagnetic radiation] and (C) an organic compound capable of affecting the reaction between the inorganic material (A) and the metal and/or metal compound (B), wherein the inorganic material (A), the metal or metal compound (B), and the organic compound (C) are in contact with each other. When the light-sensitive layer is exposed to electromagnetic radiation, a difference in the hydrophilic or oleophilic nature of the exposed areas and the unexposed areas results, whereby a planographic printing plate is obtained which can be mounted on a printing machine and printed without any other treatments.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: April 8, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomoaki Ikeda, Yuzo Mizobuchi, Fumiaki Shinozaki, Akira Nahara, Yoshihiro Ono, Yasuo Washizawa, Satoshi Yoshida, Takeshi Tomotsu
  • Patent number: 4197128
    Abstract: A light-sensitive copying material comprising at least two organic coating layers on a support, at least one of the coating layers being a light-sensitive layer which comprises an O-quinone diazide compound whose alkali solubility is increased by irradiation with active rays.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: April 8, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaru Watanabe, Tadao Yoyama, Azusa Ohashi
  • Patent number: 4197125
    Abstract: A support convenient for preparing a printing plate in situ using a liquid photosensitive resin of an unsaturated polyurethane resin is disclosed. This support consists of a base plate and coated thereon a layer of a composition consisting of a mercapto-containing ester obtained by polycondensing a thiocarboxylic acid or thioalcohol with a polyglycol or polycarboxylic acid or an aromatic tertiary amine and a polymer binder. The support of this invention, which has a broadened base of a sectionally trapezoidal configuration, provides a relief image that is firmly adhered to the support.
    Type: Grant
    Filed: December 28, 1977
    Date of Patent: April 8, 1980
    Assignee: Teijin Limited
    Inventors: Kazumi Ohkawa, Akihiro Horike, Teruo Takahashi, Tadashi Shingu
  • Patent number: 4187105
    Abstract: A non-silver photosensitive image forming composition containing at least one substituted bis-diaryl vinylidene compound and/or at least one substituted bis-diaryl imine compound and tetraiodoethylene in a dried photosensitive layer thickness not exceeding 3 microns in layer thickness, the nature of the substitution being such that substantially any high extinction absorption peak or combination of high extinction absorption peaks is available from a family of compositions covering the range of 350 to 900 nm in wavelength, said composition being placed on a transparent or reflective substrate fitted with a compatible adhesive for the photosensitive layer not more than 0.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: February 5, 1980
    Assignee: Horizons Research Incorporated
    Inventors: Eugene Wainer, James M. Lewis