Mounted On Rotatable Shaft (e.g., Swinging Arm Or Hammer, Etc.) Patents (Class 96/33)
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Patent number: 4106943Abstract: An organic solvent- or water-developable photosensitive composition consisting essentially of a ring-opened polymer or copolymer of at least one norbornene derivative having at least one substituent selected from the group consisting of ester groups, nitrile groups, carboxyl groups, amide groups, imide groups, hydroxyl groups, halogens and carboxylic acid anhydride groups, or a ring-opened copolymer of at least one said norbornene derivative and at least one cycloolefin other than cyclohexene, or a hydrolysis product of said ring-opened polymer or copolymer and a photosensitive crosslinking agent or photosensitizer soluble in organic solvents or water. The above photosensitive composition is excellent in sensitivity, adhesion and stability.Type: GrantFiled: October 13, 1976Date of Patent: August 15, 1978Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Hiroharu Ikeda, Seiji Aotani, Yoshiyuki Harita
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Patent number: 4105450Abstract: A positive light-sensitive composition containing: (a) a quinonediazide type, positive light-sensitive substance and (1) (b) at least one compound selected from the group consisting of those compounds represented by the following general formulae (I) ##STR1## wherein X.sub.1 and X.sub.2 each represents an oxygen atom or a sulfur atom; R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or a cycloalkyl group; (2) those compounds represented by the general formula (II) ##STR2## wherein R.sub.3 represents a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or a cycloalkyl group; and R.sub.4 represents a hydrogen atom, an alkyl group or a cycloalkyl group; and (3) o-benzoic acid sulfimide.Type: GrantFiled: May 25, 1976Date of Patent: August 8, 1978Assignee: Fuji Photo Film Co., Ltd.Inventors: Fumiaki Shinozaki, Tomoaki Ikeda
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Patent number: 4103616Abstract: Waterless lithographic printing masters of improved contrast are provided by a coating suitable master substrate with a silicone elastomer gum having reactive pendant hydroxyl or amino groups, reacting a photo and/or thermally reactive azide with said pendant groups, depositing a particulate image pattern on said silicone comprising a thermoplastic organohydrocarbon polymer and crosslinking said silicone and chemically bonding said organohydrocarbon to said silicone to form a durable imaged waterless lithographic printing master.Type: GrantFiled: April 27, 1977Date of Patent: August 1, 1978Assignee: Xerox CorporationInventors: Joseph Y. Chu, Richard L. Schank
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Patent number: 4104072Abstract: A method for producing a water developable lithographic printing plate which comprises treating at least one surface of a metal sheet substrate with a layer of a lithographically suitable, light sensitive, water soluble substance and subsequently coating the thus treated base sheet with an upper layer of a water insoluble, ink receptive, lithographically suitable photosensitive composition. Said photosensitive layers must be either both positive working or both negative working. Upon imagewise exposure through a mask by standard methods the exposed areas of said upper photosensitive composition are alternatively characterized as either water permeable or water impermeable and the unexposed areas are alternatively water impermeable or water permeable as opposed to the exposed areas. Upon said imagewise exposure, the exposed lower level areas in a negative system are rendered water insoluble whereas the exposed lower level areas in a positive system are rendered more water soluble than the unexposed areas.Type: GrantFiled: May 19, 1977Date of Patent: August 1, 1978Assignee: Polychrome CorporationInventors: Eugene Golda, Alan Leonard Wilkes, Simon Long Chu
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Patent number: 4101322Abstract: A composition for improving the ink receptivity of lithographic printing images comprises an organic solvent liquid capable of softening the surface of the printing image and a film forming alkali-resistant oleophilic material such as a liquid hydrocarbon solution of a normally solid hydrocarbon or fat. The composition is for use in the case where the printing image is formed by alkaline development of an image-wise exposed radiation sensitive coating such as a phenol formaldehyde resin in admixture with a sensitiser. The composition may be applied before exposure to form an alkali resistant oleophilic layer on the radiation sensitive coating or it may be applied after image-wise exposure but before alkali development.Type: GrantFiled: January 24, 1977Date of Patent: July 18, 1978Assignee: Vickers LimitedInventor: Leslie Edward Lawson
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Patent number: 4098188Abstract: This invention relates to a printing plate comprising a support bearing either(A) a layer comprising particles each containing a hydrophilic metal core and an oleophilic metal casing or(B) a layer comprising particles each containing an oleophilic metal core and a hydrophilic metal casing.Type: GrantFiled: October 7, 1976Date of Patent: July 4, 1978Assignee: Hoechst AktiengesellschaftInventor: Joachim Stroszynski
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Patent number: 4097283Abstract: A water-soluble, photosensitive resin composition containing a water-soluble polymer having an ethylenic unsaturated bond in its side-chains, a water-soluble anthraquinone sulfonic acid or anthraquinone carboxylic acid sensitizer, or salts thereof, and if desired, a water-soluble azide compound.Type: GrantFiled: December 15, 1975Date of Patent: June 27, 1978Assignee: Fuji Chemicals Industrial Company LimitedInventors: Takateru Asano, Keiko Ito
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Patent number: 4096294Abstract: A process for preparing a waterless printing master having a minimum background ink reflection density comprises coating a master substrate with an ink releasing block copolymer comprising elastomeric ink releasing siloxane blocks and isothermally crystallizable thermoplastic organic blocks. Thereafter, the thermoplastic blocks are isothermally crystallized and the siloxane blocks are preferably cross-linked. The printing master is imaged by depositing ink accepting particulate imaging material on the copolymer coating and heating and cooling the thermoplastic blocks to bond the particulate imaging material thereto.Type: GrantFiled: April 4, 1977Date of Patent: June 20, 1978Assignee: Xerox CorporationInventor: Thomas J. Pacansky
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Patent number: 4093465Abstract: Compositions comprising (I) solvent-soluble, negative-acting, light-sensitive reaction products of (a) water-soluble diazo condensation products with (b) water-insolubilizing inorganic compounds therefor and (II) synthetic, film-forming oleophilic resins, which compositions can be coated onto suitable base sheet materials to form presensitized lithographic printing plates, proofs for multi-color printing, visual aids, printed circuits and the like.Type: GrantFiled: March 12, 1975Date of Patent: June 6, 1978Assignee: Polychrome CorporationInventors: Simon L. Chu, Eugene Golda
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Patent number: 4092925Abstract: A lithographic printing plate system utilizing a composite plate having an aluminum printing member that can be recycled. An aluminum printing member has a light-sensitive coating thereon which forms the image area of the plate together with the aluminum member itself. A carrier plate supports the aluminum member. The carrier plate and the aluminum member are preferably releasably adhered together outside the image area of the plate, that is, along transverse and/or longitudinal edge positions adjacent the image area. The aluminum member is readily separated from the carrier plate for recycling after the printing run and the carrier plate can be reused or recycled.Type: GrantFiled: August 5, 1976Date of Patent: June 6, 1978Inventor: Howard A. Fromson
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Patent number: 4092172Abstract: A photocurable composition comprising a copolymer of maleic acid monoester with .alpha.-olefine compound, a vinylurethane compound obtained by urethanation reaction of a polyisocyanate compound with a photopolymerizable ethylenically unsaturated alcohol having a number average molecular weight of less than 3,000 or by urethanation reaction of 1 mole of diisocyanate compound with about 1 mole of the photopolymerizable ethylenically unsaturated alcohol and about 1/m mole of m-valent alcohol (wherein m is an integer of 2 to 6) having a number average molecular weight of less than 3,000, and a photosensitizer.Type: GrantFiled: January 2, 1976Date of Patent: May 30, 1978Assignee: Kansai Paint Co., Ltd.Inventor: Tetsuo Higuchi
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Patent number: 4092170Abstract: A photocopying material is provided having a light-sensitive layer comprising an oleophilic resin and a resinous diazonium compound, which both are soluble in an organic solvent but substantially insoluble in water, in admixture with a surface active agent which, after imagewise exposure, renders the layer developable with plain water such as ordinary tap water so as to yield an excellent photocopy and in particular a printing form from which many thousands of fine prints can be made on an offset machine.Type: GrantFiled: February 17, 1976Date of Patent: May 30, 1978Assignee: Oce-van der Grinten N.V.Inventors: Antonius H. I. Houtermans, Johannes G. Kamphuis
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Patent number: 4090880Abstract: A method for preparing aluminum based lithographic printing plates which comprises treating at least one surface of an aluminum base sheet with an interlayer composition, thereafter anodizing the thus treated aluminun surface, optionally retreating the coated, anodized aluminum plate with another stratum of the interlayer composition and then applying to said surface a suitable light sensitive composition to yield the desired photosensitive lithographic printing plate of improved characteristics.Type: GrantFiled: March 3, 1977Date of Patent: May 23, 1978Assignee: Polychrome CorporationInventors: Simon Long Chu, Eugene Golda, Alan Leonard Wilkes
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Patent number: 4086092Abstract: A method for preparing aluminum based lithographic printing plates which comprises coating at least one surface of an aluminum base sheet with a potassium zirconium fluoride solution, thereafter treating the coated, aluminum plate with a stratum of a sodium silicate solution and then applying to said surface a lithographically suitable light sensitive composition to yield the desired photosensitive lithographic printing plate of improved characteristics.Type: GrantFiled: April 18, 1977Date of Patent: April 25, 1978Assignee: Polychrome CorporationInventors: Eugene Golda, Alan Leonard Wilkes
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Patent number: 4082861Abstract: A continuous tone dry process imaging film includes a solid, high optical density and substantially opaque film of dispersion imaging material deposited on a substrate. Energy is applied to the film of dispersion imaging material, in an amount sufficient to increase the absorbed energy in the material above a certain critical value, to change the same to a substantially fluid state in which the surface tension of the material acts to cause the film, where subject to the applied energy, to disperse and change to a discontinuous film comprising openings and deformed material which are frozen in place following the application of said energy and through which openings light can pass.Type: GrantFiled: September 23, 1976Date of Patent: April 4, 1978Assignee: Energy Conversion Devices, Inc.Inventors: Masatsuga Izu, Stanford R. Ovshinsky
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Patent number: 4082040Abstract: A lithographic printing plate comprising a support and a layer of aluminum nitride formed thereon, said layer of aluminum nitride having a thickness of from about 100 A to about 10,000 A.Type: GrantFiled: July 30, 1976Date of Patent: April 4, 1978Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiro Yamashina, Hirokazu Sakaki
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Patent number: 4081276Abstract: A method is described for forming an image or design on the surface of a substrate by treating the substrate with a photoinitiator, such as triphenylsulfonium hexafluoroantimonate. A mask can be placed on the treated substrate which is exposed to radiant energy, resulting in the formation of a cationic polymerization catalyst on the exposed substrate surface. The substrate can then be contacted with a cationically polymerizable organic material, such as an epoxy resin, resulting in the formation of an adherent organic film on the surface of the substrate which has been exposed.Type: GrantFiled: October 18, 1976Date of Patent: March 28, 1978Assignee: General Electric CompanyInventor: James V. Crivello
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Patent number: 4078927Abstract: A planographic printing master comprising an ink releasing photoconductive insulating layer and an ink receptive particulate image pattern.Type: GrantFiled: December 13, 1973Date of Patent: March 14, 1978Assignee: Xerox CorporationInventors: Alan B. Amidon, Joseph Mammino
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Patent number: 4077325Abstract: Improved waterless lithographic printing masters are provided having minimum background ink reflection density. The master comprises a crosslinked block copolymer containing elastomeric, ink releasing siloxane blocks chemically linked to organic image accepting thermoplastic blocks, said copolymer having a molecular weight for the organic blocks sufficient to provide strength and a background ink reflection density of less than 0.02 and preferably less than 0.01.Type: GrantFiled: March 10, 1977Date of Patent: March 7, 1978Assignee: Xerox CorporationInventors: Thomas J. Pacansky, Alan B. Amidon
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Patent number: 4076536Abstract: Copolymers of glycidyl acrylate and allyl glycidyl ether and terpolymers derived from addition of glycidyl methacrylate to the polymerizable mixture, having an inherent viscosity within the range of about 0.09 to 0.28 and an epoxy equivalent of at least about 0.64 per 100 g. of polymer are provided which upon admixture with a catalyst which is a radiation-sensitive aryldiazonium salt of a complex halogenide, provides compositions suitable for use in a dry photopolymer positive imaging process. In the process, the polymer which is non-tacky at room temperature, together with the catalyst is applied to a substrate and exposed to an energy source for example, electromagnetic radiation through a transparency or mask. Following exposure, the coating is heated to the softening point of the unexposed portion of the coating and a powder or toner is applied thereto, the toner being adhered to only the tacky, nonexposed area of the coating, resulting in a pigmented image.Type: GrantFiled: May 26, 1976Date of Patent: February 28, 1978Assignee: American Can CompanyInventors: Sheldon Irwin Schlesinger, Ronald J. Boszak
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Patent number: 4075015Abstract: A light sensitive mass which contains a film former, which consists of 20 to 90 percent by weight of a vinylpyrrolidone-vinyl acetate copolymer or a polyvinyl pyrrolidone or both and 10 to 80 percent by weight of an aryl sulfone amide formaldehyde resin, and at least one sensitizer, the weight ratio of said film former to sensitizer being between 1:1 and 10:1. Usually the light sensitive mass is used as a light sensitive reversal-development layer on a carrier.Type: GrantFiled: August 16, 1976Date of Patent: February 21, 1978Assignee: Swiss Aluminium Ltd.Inventors: Josef Vinkovic, Eugen Werner
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Patent number: 4074009Abstract: A driographic plate capable of being direct imaged by pen, pencil, typewriter, toner powder, etc. comprising a substrate having a coating thereon, the coating comprising a continuous medium having a solid fluorinated compound containing at least one fluorinated aliphatic radical uniformly dispersed therethrough in a manner such that the coating surface is ink repellent when dry. On direct imaging, the imaged areas will readily accept ink and prints can be made therefrom without necessity of a press dampening system.Type: GrantFiled: December 8, 1975Date of Patent: February 14, 1978Assignee: Minnesota Mining and Manufacturing CompanyInventor: James F. Sanders
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Patent number: 4063507Abstract: A process for producing a planographic printing plate comprising subjecting a light-sensitive planographic printing plate member to a burning in wherein the light-sensitive planographic printing plate member is treated with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof, prior to the burning in.Type: GrantFiled: June 3, 1976Date of Patent: December 20, 1977Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Toyama, Masaru Watanabe, Harumasa Kitago
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Patent number: 4062682Abstract: A method for the preparation of a planographic printing plate wherein a sheet material comprising an outer hardenable hydrophilic colloid layer on whose surface is concentrated a visible silver image that has been formed thereon from silver halide complexes according to the silver complex diffusion transfer process, is treated with an aqueous lithographic fixer having a pH in the range of 1.0 to 6.5 and containing1. an iron(III) salt of a polyaminopolycarboxylic acid as oxidizing agent for the silver image,2. a compound yielding in dissolved state iodide ions as precipitating agent for silver ions, and3. an organic onium compound.Type: GrantFiled: July 29, 1975Date of Patent: December 13, 1977Assignee: AGFA-GEVAERT N.V.Inventors: Urbain Leopold Laridon, Rene Alois Van Brandt, Albert Lucien Poot
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Patent number: 4060656Abstract: A support for a photosensitive resin for use in making a printing plate using a liquid photosensitive resin, said support comprising a flexible self-supporting base plate and an adhesive layer formed thereon for applying a layer of the photosensitive resin, wherein said adhesive layer is a three-dimensional cured product containing 1 .times. 10.sup.-4 to 1 .times. 10.sup.-2 mol/gr. of the effectively photopolymerizable unsaturated carbon-to-carbon double bond, which has been formed from a composition consisting of (A) a compound containing at least two 1,2-epoxy groups in the molecule; (B) a compound selected from one of the group comprising (i) a compound containing an effectively photopolymerizable unsaturated carbon-to-carbon double bond and a 1,2-epoxy group in the molecule and having a boiling point of at least 120.degree. C.Type: GrantFiled: July 15, 1975Date of Patent: November 29, 1977Assignee: Teijin LimitedInventors: Kiyomi Naka, Teruo Takahashi
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Patent number: 4058398Abstract: A recording material comprising a support, a layer of a light-sensitive composition on the support, and a transparent film on the layer of the light-sensitive composition wherein the light-sensitive composition comprises (a) a monomer containing at least two addition polymerizable unsaturated bonds and having a boiling point of at least 100.degree. C, (b) polyvinyl butyral, and (c) a photopolymerization initiator represented by the formula: ##STR1## wherein R.sub.1 is an alkyl group which may be substituted or a vinyl-methyl group, R.sub.2 is an alkyl group, aryl group, or thienyl group, and Z is a group of non-metallic atoms required for forming a heterocyclic ring.After the recording material is imagewise exposed to light, the transparent film is peeled off while heating at about 70.degree. to 150.degree. C, whereby a positive or negative image is formed on each of the support and transparent film.Type: GrantFiled: September 29, 1975Date of Patent: November 15, 1977Assignee: Fuji Photo Film Co., Ltd.Inventors: Chiaki Osada, Eiichi Hasegawa, Masataka Murata
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Patent number: 4054732Abstract: Copolymers of glycidyl acrylate and allyl glycidyl ether and terpolymers derived from addition of glycidyl methacrylate to the polymerizable mixture, having an inherent viscosity within the range of about 0.09 to 0.28 and an epoxy equivalent of at least about 0.64 per 100 g. of polymer are provided which upon admixture with a catalyst which is a radiation-sensitive aryldiazonium salt of a complex halogenide, provides compositions suitable for use in a dry photopolymer positive imaging process. In the process, the polymer which is non-tacky at room temperature, together with the catalyst is applied to a substrate and exposed to an energy source for example, electromagnetic radiation through a transparency or mask. Following exposure, the coating is heated to the softening point of the unexposed portion of the coating and a powder or toner is applied thereto, the toner being adhered to only the tacky, non-exposed area of the coating, resulting in a pigmented image.Type: GrantFiled: May 26, 1976Date of Patent: October 18, 1977Assignee: American Can CompanyInventors: Sheldon Irwin Schlesinger, Ronald J. Boszak
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Patent number: 4052217Abstract: A sheet material for bimetallic printing plate production comprises a base metal layer, a thin bimetallic layer comprising lithographically different metals, and a barrier layer between the base metal layer and the bimetallic layer. The barrier layer may be an anodic layer on the base metal layer or a film or sheet of suitable plastics material. The layers are laminated together and the barrier layer prevents corrosion by electrochemical action and by the decomposition products of the constituents of the adhesives used. Additionally, in the case where the barrier layer is of plastics material, the plate is resistant to fragmentation during printing. The sheet material may be produced in continuous lengths and results in printing plates which are relatively light in weight.Type: GrantFiled: May 11, 1976Date of Patent: October 4, 1977Assignee: Howson-Algraphy LimitedInventor: Leonard James Watkinson
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Patent number: 4049453Abstract: A composite developer-etch composition for chromium-plated lithographic printing plates comprises an aqueous solution of aluminum chloride, a water-soluble chloride other than aluminum chloride, phosphoric acid, and an acid-stable water-soluble reducing agent; the composition having a particular specific gravity range.Type: GrantFiled: June 14, 1976Date of Patent: September 20, 1977Assignee: Printing Developments, Inc.Inventors: Vincent A. Pagliaro, Richard G. Walters
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Patent number: 4049746Abstract: Compositions comprising the reaction product of a novel, highly branched polyalkylenimine-urea-aldehyde resin and a polyacrylic resin provide useful intermediate coatings when applied to preconditioned metal surfaces which may be subsequently coated with light sensitive materials to make photolithographic plates. The intermediate coating, particularly when applied to a grained or ungrained aluminum support member which has been anodized and finally coated with light sensitive materials produces a highly durable plate that possesses good storage characteristics and is capable of unusually extended press runs.Type: GrantFiled: August 22, 1975Date of Patent: September 20, 1977Assignee: The Richardson CompanyInventors: Thaddeus M. Muzyczko, Ronald A. Frederiksen, David L. York
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Patent number: 4046577Abstract: A photoreactive composition containing an effective amount of a polymer which includes as a recurring structure: ##STR1## wherein Ar is a bivalent aromatic radical, and M is selected from the class consisting of hydrogen, alkali metal, ammonium, and substituted ammonium. These compositions are useful in a wide variety of photochemical and photomechanical processes and are particularly suited for use as photopolymers, photoinitiators and photosensitizers in light sensitive coatings of presensitized lithographic plates.Type: GrantFiled: July 12, 1976Date of Patent: September 6, 1977Assignee: The Richardson CompanyInventors: Thaddeus M. Muzyczko, Thomas H. Jones
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Patent number: 4045222Abstract: In an etch-bleaching process wherein a hydrophilic layer in/on which a silver image exists is first treated with an etch-bleaching solution the improvement where the hydrophilic layer is subsequently treated with an aqueous solution containing at least one of an oxyacid of chlorine and a salt thereof.Type: GrantFiled: January 26, 1973Date of Patent: August 30, 1977Assignee: Fuji Photo Film Co., Ltd.Inventors: Fumiaki Shinozaki, Tomoaki Ikeda, Masayoshi Tsuboi
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Patent number: 4043815Abstract: In a method of making a printing plate for use in offset printing, a positive transparency of the design to be printed is first prepared in such a way that when the sensitive layer thereof is observed the design thereon is seen as right side out. This positive transparency is then mounted on a support provided with registration marks, with the sensitive layer of the transparency turned outwardly, and any errors in the transparency are corrected. The mounting is then used to contact-print a negative transparency on which the design is seen inside out when its sensitive layer is observed. Finally the design is formed on the printing plate employing the negative transparency, after any necessary re-touching of the latter.Type: GrantFiled: August 18, 1976Date of Patent: August 23, 1977Inventor: Stephane Klymus
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Patent number: 4043811Abstract: A conversion solution for rendering hydrophilic the zinc oxide resin binder type planographic masters containing 2.0% potassium ferrocyanide, phosphoric acid to produce a pH in the range of 4.1 - 4.2 and a buffering salt of ammonium acid phosphate or sodium acid phosphate to buffer the solution and 4.0% by weight of triethanolamine as a modifying and solvating agent to raise the solubility threshold preventing formation of needle-like crystals that tend to form as water evaporates from the solution, and modify the physical property of crystals that do form to a less-hard structure.Type: GrantFiled: July 29, 1976Date of Patent: August 23, 1977Assignee: Addressograph Multigraph CorporationInventor: Richard John Pratt
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Patent number: 4042613Abstract: Novel benzophenone derivatives represented by the general formula R.sub.m.sup.1 --C.sub.6 H.sub.5-m --CO--C.sub.6 H.sub.5-n --R.sub.n.sup.2 where R.sup.1 is a halogen atom, a monovalent C.sub.1-10 hydrocarbon, alkoxy, thioalkoxy, amino, or dialkylamino group, R.sup.2 is an unsubstituted or organosiloxy-substituted organosilyl group, and m and n are each integers from 1 to 5. The benzophenone derivatives are useful as photosensitizers for making photo-curable compositions by blending with photo polymerizable resins, especially photopolymerizable organosilicon resins. Such photo-curable organosilicon resin compositions are further useful for making dry-planographic printing plates comprising non-image areas formed from the polymerized and cured layers of the composition.Type: GrantFiled: April 21, 1975Date of Patent: August 16, 1977Assignees: Dai Nippon Printing Co., Ltd., Shin-Etsu Chemical Co., Ltd.Inventors: Minoru Takamizawa, Yasushi Yamamoto, Yoshio Inoue, Atsumi Noshiro, Hitoshi Fujii
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Patent number: 4037533Abstract: Method for substantially improving the shadow detail and color spectrum range of multicolored lithographic reproductions including the preparation of and printing with standard halftone printing plates and overprinting with a secondary printing plate made from a color separation used in making the halftone printing plates; the secondary printing plate being made from a secondary image exposed through a random pattern screen.Type: GrantFiled: June 2, 1976Date of Patent: July 26, 1977Assignee: Rapoport Printing CorporationInventors: Sidney L. Rapoport, Douglas F. Mitchell
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Patent number: 4038077Abstract: This application relates to procedures wherein a photographic image in silver prepared by diffusion transfer is treated in such a manner as to provide a printing plate or inking master useful in photomechanical reproduction or to provide a non-silver image of the original subject matter, e.g., a document or the like to be reproduced.Type: GrantFiled: March 10, 1976Date of Patent: July 26, 1977Assignee: Polaroid CorporationInventor: Edwin H. Land
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Patent number: 4038253Abstract: It has been found that certain polymers containing pendant diazo ester groups are photosensitive and have utility in the preparation of both lithographic and relief printing plates, as well as for etching resists for printed circuits. This is a continuation of application Ser. No. 412,218, filed Nov. 2, 1973 now abandoned.Type: GrantFiled: June 2, 1976Date of Patent: July 26, 1977Assignee: Hercules IncorporatedInventor: Brian D. Kramer
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Patent number: 4030416Abstract: Improved waterless lithographic plates are provided. The master which comprises a copolymer of siloxane blocks crosslinked to an elastomeric ink releasing condition and organic thermoplastic blocks which are ink accepting is imaged with a particulate material, preferably an ink accepting thermoplastic polymer, and the thermoplastic blocks heated and cooled to bond the particulate imaging material thereto.Type: GrantFiled: July 30, 1976Date of Patent: June 21, 1977Assignee: Xerox CorporationInventor: Richard L. Schank
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Patent number: 4028107Abstract: Process and apparatus for printing a plurality of imposed pages in which proofs of said pages are manufactured, the proofs then being confined in co-planar, predetermined relation by engaging the sheets solely along selected edges thereof, and while holding the sheets thus confined manufacturing a printing plate or other reproductions therefrom. In one embodiment the proofs are on opaque or light impermeable sheets, while in a second embodiment they are on light permeable sheets. In the case of the opaque proofs used to make a printing plate, the plate is produced from a photo negative of the proof, whereas if the proofs are on light permeable material a plate may be produced directly by passing light through said proofs onto the sensitized surface of the plate material.Type: GrantFiled: May 19, 1971Date of Patent: June 7, 1977Inventor: John C. Henley, III
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Patent number: 4022619Abstract: A composite developer-etch composition for chromium-plated lithographic printing plates comprises an aqueous solution of aluminum chloride, a water-soluble chloride other than aluminum chloride, phosphoric acid, and an acid-stable water-soluble reducing agent; the composition having a particular specific gravity range.Type: GrantFiled: April 14, 1975Date of Patent: May 10, 1977Assignee: Printing Developments, Inc.Inventors: Vincent A. Pagliaro, Richard G. Walters
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Patent number: 4020762Abstract: A planographic printing plate which is imaged by means of a laser beam in combination with overall exposure to ultraviolet light and developed by means which are conventional in lithographic art.Type: GrantFiled: October 14, 1975Date of Patent: May 3, 1977Assignee: Scott Paper CompanyInventor: John O. H. Peterson
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Patent number: 4021592Abstract: An article having an aluminum substrate, an unsealed, porous anodic oxide layer thereon and electrolytically deposited, randomly distributed discrete metal islands having a root portion anchored in one or more pores of the oxide layer. The metal islands extend from the root portion above the surface of the oxide layer in a bulbous, undercut configuration.A process for treating aluminum is also disclosed and includes the steps of electrolytically anodizing aluminum surfaced articles to form an unsealed, porous anodic oxide layer thereon followed by electrolytically depositing randomly distributed discrete metal islands in the pores of the oxide layer and extending above the surface thereof in the bulbous, undercut configuration.Type: GrantFiled: October 15, 1975Date of Patent: May 3, 1977Inventor: Howard A. Fromson
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Patent number: 4019904Abstract: The planographic printing plate has ink-receptive and ink-repellent areas provided on its base, the ink-repellent areas being covered with a layer formed by polymerizing and curing a composition which comprise a photopolymerizable organopolysiloxane with maleimido groups. The photopolymerizable organopolysiloxane has easily synthesized. The ink-repellency of the cured organopolysiloxane is excellent. The planographic printing plates can be used without dampening water and have a superior press life.Type: GrantFiled: March 30, 1976Date of Patent: April 26, 1977Assignees: Dai Nippon Printing Company Limited, Shin-Etsu Chemical Company LimitedInventors: Atsumi Noshiro, Minoru Takamizawa, Yasushi Yamamoto, Yoshio Inoue, Hitoshi Fujii
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Patent number: 4019907Abstract: A photosensitive color-forming element comprises a support and a photosensitive color-forming layer formed on said support and containing therein at least one photosensitive color-forming azido compound of the formula ##STR1## wherein [A] is a benzene ring or naphthalene ring, R.sub.1 and R.sub.2 each is a hydrogen or halogen atom or alkyl, alkoxyl, dialkylamino, acyl, acylamino, nitro or hydroxyl radical, and R.sub.3 is a hydrogen or halogen atom, or alkyl, alkoxyl, nitro, carboxyl, alkylcarboxyl, dialkylcarbamoyl, sulfonic acid, dialkylaminosulfonyl, alkylsulfonyl or acyl radical or a group of the formula (II), (III), (IV) or (V): ##STR2## in which formula X is an --O-- bonding or --NH-- bonding.[B] is a benzene ring or naphthalene ring, and R.sub.4 and R.sub.Type: GrantFiled: October 17, 1974Date of Patent: April 26, 1977Assignees: Hodogaya Chemical Co., Ltd., Oji Paper Co., Ltd.Inventors: Takahiro Tsunoda, Minoru Ozutsumi, Shigeo Maeda, Susumu Suzuka, Hidetoshi Komiya, Hideaki Shinohara
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Patent number: 4018605Abstract: A hydrophilic-surfaced metallic foil capable of providing a lithographic printing plate upon imaging by the silver salt diffusion transfer process, the foil being treated with an aqueous solution of a water soluble Group IV-B hexavalent metal fluoride compound prior to imaging, and the lithographic plate so produced.Type: GrantFiled: April 21, 1975Date of Patent: April 19, 1977Assignee: Minnesota Mining and Manufacturing CompanyInventor: David B. Olsen
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Patent number: 4016814Abstract: A novel printing master and method for producing the same is disclosed which comprises the coating of a suitable substrate with an uncured silicone gum composition containing an activating proportion of a "blowing" or "foaming" agent. A particulate image pattern such as a toner image pattern, is transferred to the uncured silicone layer, followed by curing of the gum to an elastomeric ink releasable film. Activation of the "blowing" agent occurs during curing of the silicone to cause imagewise "foaming" of the silicone layer. After removal of the deposited image pattern, a "foamed" image is formed which is ink receptive and provides an imaged printing master suitable for use without a need for aqueous dampening solutions to provide ink release in non-imaged areas of the master.Type: GrantFiled: April 13, 1973Date of Patent: April 12, 1977Assignee: Xerox CorporationInventors: Richard L. Schank, Richard G. Crystal
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Patent number: 4015986Abstract: Baked novolak resin based positive photoresists are either developed after exposure or stripped, following the use of the pattern resist layer as an etch mask, in aqueous solutions of a combination of permanganate and phosphoric acid.Type: GrantFiled: August 22, 1975Date of Patent: April 5, 1977Assignee: International Business Machines CorporationInventors: Gabor Paal, Jurgen F. Wustenhagen
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Patent number: 4012254Abstract: Photoconductive waterless lithographic printing masters are provided having particle-to-particle contact of photoconductive material by placing a heterogeneous copolymer having an abhesive species and an imaging material adhesive species, in a solvent in which at least one of said species can be preferentially dissolved, preferentially dissolving one of said species and forming a suspension of photoconductive material in said soluble species, and coating the suspension on a suitable master substrate, allowing the solvent to evaporate, imaging the material with an ink accepting particulate imaging material in image configuration, and fusing the particulate imaging material to the coated master substrate while preferably effecting a phase inversion between the two species of the heterogeneous copolymer.Type: GrantFiled: April 28, 1975Date of Patent: March 15, 1977Assignee: Xerox CorporationInventor: Richard G. Crystal
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Patent number: 4009033Abstract: A positive photoresist having increased sensitivity to light and formed by the addition of an acidic compound to a 1,2-quinone-diazide sulphonic acid ester sensitizer.Type: GrantFiled: September 22, 1975Date of Patent: February 22, 1977Assignee: International Business Machines CorporationInventors: Peter Bakos, John Rasile