Resilient Layer (e.g., Printer's Blanket, Etc.) Patents (Class 428/909)
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Patent number: 6551716Abstract: A method of producing a coating on a member comprising: providing a body portion; coating the body portion with a catalyst material for a release coating material; and overcoating the catalyst material with an uncured polymer material for which the catalyst is active. Preferably, the release coating material is a condensation type silicone.Type: GrantFiled: November 30, 1999Date of Patent: April 22, 2003Assignee: Indigo N.V.Inventors: Benzion Landa, Marc Aronhime, Nava Klein, Erez Faraggi, Carlos Teper, Amiran Lavon, Yael Kowal
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Publication number: 20030066448Abstract: Novel printing surfaces for off-set printing blankets are provided having a resilience of less than about 40% and an average surface roughness of less than about 0.5 microns. Such low-resilience printing surfaces have been found to transfer up to greater than 90% of the ink applied thereto and can be used to transfer ink on a wide variety of substrates.Type: ApplicationFiled: November 15, 2002Publication date: April 10, 2003Inventor: Richard Rodgers
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Patent number: 6536342Abstract: Novel printing surfaces for off-set printing blankets are provided having a resilience of less than about 40% and an average surface roughness of less than about 0.5 microns. Such low-resilience printing surfaces have been found to transfer up to greater than 90% of the ink applied thereto and can be used to transfer ink on a wide variety of substrates.Type: GrantFiled: June 28, 2001Date of Patent: March 25, 2003Assignee: MacDermid Graphic Arts, Inc.Inventor: Richard Rodgers
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Patent number: 6514888Abstract: A cushioning material for forming press includes fiber material layers 31 and 32 superimposed with a bonding material layer 30 interposed, an upper rubber layer 33 positioned on an upper surface of one fiber material layer 31, a lower rubber layer 34 positioned on a lower surface of the other fiber material layer 32, an upper exudation preventing layer 35 positioned on an upper surface of the upper rubber layer 33, and a lower exudation preventing layer 36 positioned on a lower surface of the lower rubber layer 34.Type: GrantFiled: July 10, 1997Date of Patent: February 4, 2003Assignee: Yamauchi CorporationInventors: Atsuo Tanaka, Akira Yoshida
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Patent number: 6505555Abstract: In the present invention, a blanket cylinder for a printing press is made up of a shaft roller and a cylindrical blanket capable of being attached and detached freely to and from the shaft roller. The cylindrical blanket comprises an elastic layer formed integrally with a cylindrical sleeve by winding and bonding a sheet-form elastic member on and to the outer peripheral surface of the sleeve, the elastic layer having a gap extending in the axial direction formed between both ends in the circumferential direction of the sheet-form elastic member; and a separation preventive member for preventing both ends in the circumferential direction of the sheet-form elastic member from being separated from the sleeve, the separation preventive member being embedded in the gap so as to be thinner than the thickness of the sheet-form elastic member to form a groove in the outer peripheral surface of the elastic layer.Type: GrantFiled: March 30, 2001Date of Patent: January 14, 2003Assignee: Mitsubishi Heavy Industries, Ltd.Inventor: Yoshiaki Kanda
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Patent number: 6500776Abstract: A blanket substrate comprising spun yarn of polyvinyl alcohol based fibers, in which the fibers have primary ridged streaks which are formed on their surfaces in the direction of the fiber axis with finer secondary ridged steaks formed in the primary ridged streaks, the fibers having a cross-section circularity of at least 80%.Type: GrantFiled: May 6, 1999Date of Patent: December 31, 2002Assignee: Kuraray Co., Ltd.Inventors: Toshihiro Hamada, Nobuyoshi Takai, Kunihiro Shiraki, Tomokazu Ise
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Publication number: 20020098758Abstract: A blanket substrate comprising spun yarn of polyvinyl alcohol based fibers, in which the fibers have primary ridged streaks which are formed on their surfaces in the direction of the fiber axis with finer secondary ridged steaks formed in the primary ridged streaks, the fibers having a cross-section circularity of at least 80%.Type: ApplicationFiled: May 6, 1999Publication date: July 25, 2002Inventors: TOSHIHIRO HAMADA, NOBUYOSHI TAKAI, KUNIHIRO SHIRAKI, TOMOKAZU ISE
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Patent number: 6389965Abstract: A tubular printing blanket including a tubular print layer, a tubular isotropic plastic reinforcing layer underneath the print layer, a compressible layer underneath the reinforcing layer, and a sleeve for supporting, directly or indirectly, the compressible layer es axial stability due to its isotropic nature and the plastic material. Also disclosed is a method for manufacturing a tubular printing blanket including forming a tubular reinforcing layer and sliding the tubular reinforcing layer over a compressible layer. Furthermore, a device for manufacturing a tubular printing blanket is also provided. A first build cylinder has an outer diameter. A mandrel cap can be attached to one end of the build cylinder, the mandrel cap having an outer diameter larger than the build cylinder outer diameter.Type: GrantFiled: December 21, 1999Date of Patent: May 21, 2002Assignee: Heidelberger Druckmaschinen AGInventors: James Brian Vrotacoe, Richard Karl Weiler
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Patent number: 6382102Abstract: Rubber blanket sleeve for a channel-free rubber blanket cylinder of an offset printing machine and process of producing rubber blanket sleeve. The rubber blanket sleeve includes an inner, dimensionally stable support sleeve arranged as a supporting layer, and a microporous compressible elastomer layer having a compressibility within a range between about 7% and 15% with a load of 100 N/cm2. The elastomer layer includes a rubber matrix having a tensile stress of greater than about 2.2 N/mm2 and less than about 15 N/mm2 with 100% elongation. An outer covering rubber layer is arranged as a printing layer. All of the layers are composed of seamless, cylindrical bodies and are coupled to one another. The process includes arranging an inner, dimensionally stable support sleeve as a supporting layer, and positioning a microporous compressible elastomer layer having a compressibility within a range between about 7% and 15% with a load of 100 N/cm2 over the support sleeve.Type: GrantFiled: August 25, 2000Date of Patent: May 7, 2002Assignee: ContiTech Elastomer Beschichtungen GmbHInventors: Joachim Herrmann, Stefan Fullgraf, Karl-Herwig Dommes, Jürgen Reissmann, Thomas Moldenhauer
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Patent number: 6374734Abstract: An improved printing press includes a tubular-shaped printing blanket removably disposed on a blanket cylinder rotatably supported by a frame and having a continuous outer circumferential surface which is free of gaps. The printing blanket is disposed in rolling engagement with a conventional printing plate disposed on a plate cylinder having an axially extending gap in which opposite ends of the printing plate are secured. The printing blanket is removed by opening a portion of the frame and axially sliding the printing blanket off of the blanket cylinder. To assist in the removal or insertion of the printing blanket the blanket cylinder has passages which deliver a stream of air to the outer surface of the blanket cylinder which expands the inner circumferential surface of the printing blanket so that the blanket can be axially removed or inserted onto the blanket cylinder.Type: GrantFiled: November 11, 1997Date of Patent: April 23, 2002Assignee: Heidelberger Druckmaschinen AGInventors: John Marshall Gaffney, Glenn Alan Guaraldi, James Brian Vrotacoe
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Publication number: 20020031653Abstract: A molded article such as a floor tile is made from recycled carpet waste which includes a polyvinyl chloride component in the backing material and fiber component having a melting point above the melting point of polyvinyl chloride. A mixture of the recycled carpet material is shredded and additional polyvinyl chloride is fed to an extruder where the polyvinyl chloride is melted without melting the carpet fibers. The resulting mixture is discharged and molded, such as by injection molding, to form a molded product. The molded product includes a continuous matrix of polyvinyl chloride having recycled carpet fibers uniformly dispersed therein. The molded article contains about 45% to about 85% of polyvinyl chloride, about 5% to about 20% of recycled carpet fibers, up to about 5% of a plasticizer and up to about 5% of an ethylene copolymer by weight based on the total weight of the product.Type: ApplicationFiled: September 14, 2001Publication date: March 14, 2002Inventors: Thomas E. Ricciardelli, Michael H. King, Michael P. Slater, Steven F. Raposo
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Patent number: 6326077Abstract: A composite material with high resistance to impact energy, comprising an expanded polymer selected among polystyrene, polypropylene, copolymer of polyphenylene oxide and polystyrene and mixtures thereof, dispersed in a resin chosen among melaminic resin, phenolic resin and polyurethane resin and mixtures thereof.Type: GrantFiled: June 19, 1998Date of Patent: December 4, 2001Inventor: Roberto Monaci
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Patent number: 6308624Abstract: A method is furnished for producing a compressible layer for a printing blanket by heating a sheet-shaped intermediate layer of a rubber composition having a structure in which hollow microspheres are dispersed in matrix rubber for one to fifty minutes under certain defined conditions of vulcanizing pressure and temperature using a vulcanizer for applying heat and pressure in direct contact with the intermediate layer. The produced compressible layer exhibits superior compressibility and durability, is uniform in thickness and internal structure, and does not reduce the productivity of the printing blanket and increase the fabrication cost of the printing blanket.Type: GrantFiled: September 14, 1999Date of Patent: October 30, 2001Assignee: Sumitomo Rubbers Industries, LimitedInventors: Makoto Sugiya, Toshio Kamada, Seiji Tomono, Yuji Yamasaki
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Patent number: 6289809Abstract: Disclosed is a blanket for an offset printing, comprising a metallic sleeve, a base layer formed on the metallic sleeve, a compressible rubber layer formed on the base layer, an inextensible layer formed on the compressible rubber layer, and a surface rubber layer formed on the inextensible layer, wherein the inextensible layer consists of a thread that is compressed in advance to 90% to 50% of the original thickness and wound about the compressible layer.Type: GrantFiled: October 12, 1999Date of Patent: September 18, 2001Assignee: Kinyosha Co., Ltd.Inventor: Saburo Sonobe
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Patent number: 6287638Abstract: A laminated printing blanket having compressible and resilient properties and a method for its production are provided. The compressible characteristics are provided by disposing an intermediate layer having substantially uniformly distributed voids of substantially uniform size between the base ply and the working surface of the printing blanket. The voids of the compressible intermediate layer are formed by introducing high melting point microspheres formed from thermoplastic resins into an elastomeric matrix, coating said microsphere containing elastomeric matrix upon an upper surface of the base ply and then vulcanizing the coated base ply at a temperature of between about 80-150° C. for between about one and six hours to form the compressible layer having substantially uniform compression characteristics. Once all of the layers of the blanket are stacked, a final vulcanization treatment at between about 132-160° C.Type: GrantFiled: November 23, 1999Date of Patent: September 11, 2001Assignee: Reeves Brothers, Inc.Inventors: Francesco Castelli, Gianpiero Invernizzi
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Patent number: 6283027Abstract: A blanket that has a varying profile and a method for its use is disclosed. By varying the profile of the blanket cylinder and/or blanket, either in terms of its material properties or its thickness, the blanket, when placed about a blanket cylinder, corrects for unwanted variation in the velocity profile present in the web. Such velocity profile variations, if not taken into account, may cause wrinkling of a web passing over the blanket cylinder in a printing press and thus cause misregistered images. In a further embodiment, the blanket cylinder may be provided with a varying profile.Type: GrantFiled: June 13, 2000Date of Patent: September 4, 2001Assignee: Heidelberger Druckmaschinen AGInventors: James B. Vrotacoe, Charles Reif Hammond, Daniel Paul Gagne
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Patent number: 6257140Abstract: A continuous process for manufacturing a gapless tubular printing blanket comprising the steps of continuously forming a tubular sleeve in a sleeve forming station; continuously moving the tubular sleeve axially from the sleeve forming station through a print layer forming station and continuously applying a print layer over said tubular sleeve as it passes through said further print layer forming station to form a gapless tubular printing blanket of indeterminate length. In accordance with one embodiment, the tubular sleeve is rotated as it moves axially from the sleeve forming station through print layer forming station. In accordance with another embodiment the the tubular sleeve is not rotated (i.e. it remains rotationally fixed) as it moves axially from the sleeve forming station through print layer forming station.Type: GrantFiled: December 27, 1999Date of Patent: July 10, 2001Assignee: Heidelberger Druckmaschinen AGInventors: Roland Thomas Palmatier, James Brian Vrotacoe
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Patent number: 6207597Abstract: A printing blanket according to the present invention is substantially composed of a base fabric and a surface printing layer, and a part or the whole of the base fabric is composed of hollow fibers. The printing blanket is superior in productivity because it has a simpler structure than that of an air-type printing blanket, and has excellent compression properties similar to those of the air-type printing blanket.Type: GrantFiled: October 7, 1998Date of Patent: March 27, 2001Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshikazu Ogita, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
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Patent number: 6205922Abstract: A reversible printing blanket to be used with offset printing machines. The reversible printing blanket has two opposing lithographic printing faces. The blanket comprises a first external lithographic layer providing a first printing face, a second external lithographic layer providing a second printing face, and at least one compressible layer between the lithographic layers. Such reversible printing blanket allows impressions to be made by both sides of the blanket in such a way as to permit two separate printing jobs.Type: GrantFiled: March 16, 1999Date of Patent: March 27, 2001Assignee: Rollin S.A.Inventors: Jean-Luc Henry, Gérard Rich, Frédéric Soufflet
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Patent number: 6205920Abstract: A continuous image transfer belt which is useable in a variable image size offset press system and which is adapted to permit the press to print a variety of different sized printed matter is provided. The image transfer belt includes at least one base ply, at least one layer of a compressible material over the base ply, and a surface ply over the layer of compressible material Preferably, the belt is continuous. The belt is used in an offset printing system having the capability to print variable-sized images. The system includes a source of ink; at least one plate cylinder and a replaceable sleeve for the plate cylinder, and a printing plate which is adapted to receive ink from the ink source.Type: GrantFiled: September 24, 1998Date of Patent: March 27, 2001Assignee: Day International, Inc.Inventors: Edward P. Dzierzynski, Robert Andrew, Michael E. McLean
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Patent number: 6205921Abstract: A continuous image transfer belt which is useable in a variable image size offset press system and which is adapted to permit the press to print a variety of different sized printed matter is provided. The image transfer belt includes at least one base ply, at least one layer of a compressible material over the base ply, and a surface ply over the layer of compressible material. Preferably, the belt is continuous. The belt is used in an offset printing system having the capability to print variable-sized images. The system includes a source of ink; at least one plate cylinder and a replaceable sleeve for the plate cylinder, and a printing plate which is adapted to receive ink from the ink source.Type: GrantFiled: December 17, 1999Date of Patent: March 27, 2001Assignee: Day International, Inc.Inventors: Edward P. Dzierzynski, Robert Andrew, Michael E. McLean
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Patent number: 6182568Abstract: The present invention provides a printing blanket which includes a first compressive layer which is porous and seamless, a non-expansion layer formed by spirally winding a wire in a circumferential direction of the blanket so that a distance between adjacent wires is not more than 0.5 mm, a second compressive layer which is porous and seamless, a surface printing layer which is seamless and non-compressive, and a cylindrical sleeve to be fit over a blanket cylinder, wherein these layers are laminated in this order on the outer peripheral surface of this cylindrical sleeve directly or through a seamless adhesive layer. According to this printing blanket, piling caused at the time of high-speed printing is inhibited and printing can be performed in high productivity.Type: GrantFiled: October 14, 1998Date of Patent: February 6, 2001Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshikazu Ogita, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
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Patent number: 6105498Abstract: A blanket that has a varying profile and a method for its use is disclosed. By varying the profile of the blanket cylinder and/or blanket, either in terms of its material properties or its thickness, the blanket, when placed about a blanket cylinder, corrects for unwanted variation in the velocity profile present in the web. Such velocity profile variations, if not taken into account, may cause wrinkling of a web passing over the blanket cylinder in a printing press and thus cause misregistered images. In a further embodiment, the blanket cylinder may be provided with a varying profile.Type: GrantFiled: May 15, 1997Date of Patent: August 22, 2000Assignee: Heidelberger Druckmaschinen AGInventors: James B. Vrotacoe, Charles Reif Hammond, Daniel Paul Gagne
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Patent number: 6077795Abstract: A fibrous papermaking felt for carrying a paper web through a paper making process includes a resilient layer of glass fibers and a fabric backing layer.Type: GrantFiled: March 20, 1996Date of Patent: June 20, 2000Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Arthur Blinkhorn, Terry J. Beaver, William Scott Miller
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Patent number: 6074735Abstract: A printing blanket according to the present invention is provided with a non-stretchable layer formed by arranging hollow yarn in a predetermined direction inside a surface printing layer constituting an elastomer. The printing blanket is and formed in a seamless cylindrical shape in the circumferential direction, is superior in productivity because it has a simpler structure than that of an air-type printing blanket, and has excellent compression properties similar to those of the air-type printing blanket.Type: GrantFiled: November 26, 1997Date of Patent: June 13, 2000Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshikazu Ogita, Makoto Sakuraoka, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
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Patent number: 6073558Abstract: A printing press includes a combination printing blanket and blanket cylinder having a fill-in bar adapted to receive both ends of the printing blanket. The printing blanket and the fill-in bar are preattached, and, after wrapping the blanket around the cylinder, a barbed snap fit is achieved to fastened the blanket tightly around the cylinder.Type: GrantFiled: July 20, 1998Date of Patent: June 13, 2000Assignee: Heidelberger Druckmaschinen AGInventor: Jackson Hacker Jones
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Patent number: 6072976Abstract: Disclosed is an intermediate transfer member used for printing by an intermediate transfer method in an electrostatic recording process, which is capable of preventing adhesion and fusion of a tone on the surface of the intermediate transfer member as mush as possible, thereby obtaining a high quality image without dimming, positional offset and unevenness of color. The intermediate transfer member is disposed between an image forming body and a recording medium for allowing a toner image formed on the surface of the image forming body to be once transferred and held on the surface of the intermediate transfer member and to be then transferred on the recording medium. The intermediate transfer member includes a fabric layer having a structure of one or more layers; and an elastic layer laminated on either or each of surfaces of the fabric layer.Type: GrantFiled: December 12, 1997Date of Patent: June 6, 2000Assignee: Bridgestone CorporationInventors: Shigeo Kuriyama, Takahiro Sakami, Yoshikazu Ueno, Takayuki Mochizuki, Toshiaki Shimomura, Itaru Kurimoto, Hiroshi Murata
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Patent number: 6071837Abstract: A membrane felt for a tissue making process using a Yankee or MG cylinder the membrane felt comprising a polymeric matrix membrane layer (11) and a supporting base structure (12). The polymeric matrix optionally at least partially encapsulates parallel yarns extending it at least one direction. The supporting base structure is a textile substrate. These are secured together, preferably via a batt fibre layer which may be needled between the supporting base structure and membrane layer.Type: GrantFiled: August 1, 1997Date of Patent: June 6, 2000Assignee: Voith Fabrics Heidenheim GmbH & Co KGInventor: Robert L. Crook
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Patent number: 6062138Abstract: In an offset printing apparatus, the offset blanket is configured to prevent the transfer of ink from the bare metal edges of the lithographic printing plates. These edges may also have burrs which would exacerbate the ink pick-up and transfer of the unwanted ink to the offset blanket and the paper. The offset blanket is shaved down or relieved in the areas juxtaposed to the edges of the printing plates so that the ink will not be transferred.Type: GrantFiled: March 30, 1999Date of Patent: May 16, 2000Assignee: Howard A. FromsonInventors: Howard A. Fromson, William J. Rozell
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Patent number: 6019042Abstract: An offset printing blanket produced from a continuous roll or web, with a lithographic surface, a compressible layer, at least one reinforcing layer with low stretch characteristics, and a fabric layer located on the side of the reinforcing layer which is opposite to the lithographic surface. The compressible layer is located between the lithographic surface and the reinforcing layer.Type: GrantFiled: November 21, 1997Date of Patent: February 1, 2000Assignee: Novurania, S.p.A.Inventors: Giovanni Batti, Bruno Ginelli, Mirco Pellegrini
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Patent number: 6007921Abstract: A hot soft nip calendar apparatus is provided for a paper mill. The apparatus includes at least one heated calendar roller and a finishing belt which is moved in proximity to the heated calendar roller by a plurality of drive rollers and at least one pressure roller. Thus, a heated calendar nip is defined between the heated calendar roller and the finishing belt. A web of paper is passed through the nip, such that one surface of the web of paper is contacted by the heated calendar roller, while the opposed surface of the web is contacted by the finishing belt. The finishing belt has an extremely smooth surface for contacting the web of paper so as to impart appropriate smoothness and gloss characteristics to that surface. The finishing belt can readily be changed when worn or damaged or to alter the characteristics being imparted to a web of paper.Type: GrantFiled: August 28, 1997Date of Patent: December 28, 1999Assignee: Champion International CorporationInventors: Thomas M. Neider, Robert J. Rudt
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Patent number: 5957052Abstract: A printing machine roller, especially an ink roller, and preferably an ink distributor roller, with a coating of the entire outer cylindrical surface. The coating consists of a support matrix of a good heat-conducting and low-wear metal, e.g., nickel or aluminum-silicon alloy and graphite or plastic particles, e.g., of polyester, inlaid into the metal matrix. The coating is produced by thermal spraying, preferably plasma spraying or flame spraying. The residual porosity of the coating can be varied within wide limits based on process requirements. This residual porosity also permits the ink-friendliness to be varied within wide limits via sealing with an ink-friendly plastic. The roughness of such layers can be adjusted virtually as desired to the individual requirements of the offset process.Type: GrantFiled: December 22, 1997Date of Patent: September 28, 1999Assignee: MAN Roland Druckmaschinen AGInventors: Martin Endisch, Gerhard Johner
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Patent number: 5941172Abstract: A dual purpose transfer printing and laminating blanket (18) has an endless woven base fabric (28) having at least one layer of fluoropolymer coating material (32, 33) applied thereto. A bonding layer is applied to each side of the base fabric, to bond the at least one layer to the base fabric.Type: GrantFiled: August 8, 1997Date of Patent: August 24, 1999Assignee: Scapa Group PlcInventor: Frank Brookfield
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Patent number: 5934192Abstract: A printing blanket in which an open cell compressible layer and a closed cell compressible layer are provided inside a surface printing layer, which has such superior characteristics that it has the advantages of both the compressible layers and does not cause a variety of problems which are caused by the disadvantages of both the compressible layers.Type: GrantFiled: January 29, 1998Date of Patent: August 10, 1999Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshikazu Ogita, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
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Patent number: 5934194Abstract: A multi-layer rubber blanket, that is intended for use on a rubber blanket cylinder, is secured at its underside to a dimensionally stable support plate. The ends of the multi-layer rubber blanket are not affected by mechanical or chemical cleaning. This is accomplished by sealing the front or end faces of the layers of the multi-layer blanket, which are situated underneath the outer, cover layer of the rubber blanket.Type: GrantFiled: May 22, 1998Date of Patent: August 10, 1999Assignee: Koenig & Bauer-Albert AktiengesellschaftInventors: Helmut Puschnerat, Wolfgang Gunter Ruckmann
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Patent number: 5918542Abstract: A device for perforating, die-cutting, cutting or creasing in printing machines comprises a supporting foil which at two of its opposite sides is provided with strips for mounting onto a rubber blanket cylinder of a printing unit, whereby a component for perforating, die-cutting, cutting or creasing is affixed to the supporting foil. An impression cylinder covered with a protection foil co-operates with the rubber blanket cylinder. The use of a relatively hard supporting foil instead of a rubber blanket allows for much cleaner and quicker perforation and punching, and the affixing of the perforating, die-cutting, cutting or creasing component to the supporting foil on the rubber blanket cylinder allows a much easier and more precise positioning of that component. As a result, the device can also be used in endless printing machines. Moreover, the use of an independent inner underlying blanket allows an exact calibration of the total thickness of the supporting foil comprising the working tools.Type: GrantFiled: October 23, 1997Date of Patent: July 6, 1999Assignee: Hans E. Ruprecht Holding AGInventor: Daniel Ruprecht
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Patent number: 5863367Abstract: A method of forming a cylindrical printing article having a unitary compressible laminate and which includes a rotatable support in the form of a cylinder. This method comprises forming a compressible laminate having upper and lower surfaces and a substantially uniform thickness from at least a printing face which forms the upper surface and a compressible layer positioned beneath the printing face. The compressible layer contains a plurality of compressible cells dispersed therein and has first and second surfaces, with the first surface bonded to an adjacent surface of the printing face. In another step, the first surface of the compressible layer is formed with a profile having a raised central portion so that the compressible layer is spaced closer to the upper surface of the printing face in the center of the laminate than at the ends. Preferably, this laminate is cylindrical and is in the form of a printing blanket or printing roller.Type: GrantFiled: November 4, 1994Date of Patent: January 26, 1999Assignee: Reeves Brothers, Inc.Inventors: Richard L. Behnke, Vernon O'Neil Bridges, W. Toriran Flint, Joseph L. Byers
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Patent number: 5860360Abstract: A replaceable sleeve having a working surface is provided which is adapted to be mounted on a carrier. The sleeve includes an inner polymeric layer, a reinforcing layer overlying the inner layer, an intermediate polymeric layer overlying the reinforcing layer, and an outer polymeric layer. The sleeve may include a cushion layer between the intermediate layer and the outer layer. The layers comprising the sleeve are formed around a support and then cured simultaneously in a single step. The resulting sleeve may be used in printing operations or in other applications such as coating, embossing, laminating, calendering and the like.Type: GrantFiled: December 4, 1996Date of Patent: January 19, 1999Assignee: Day International, Inc.Inventors: William James Lane, III, Michael Edward McLean, Thomas Gerald Ferguson
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Patent number: 5858509Abstract: A composite shelf in a shelf frame supports a plurality of disk drives and attenuates vibrations in the shelf. In the composite shelf, there is a double wall having an outer wall and an inner wall for supporting the disk drives mounted on the shelf. A stiffener between the inner wall and outer wall strengthens the composite shelf to reduce flexure in the composite shelf when the shelf is loaded by disk drives mounted on the shelf. A damping layer is placed between the stiffener and one of the inner wall or outer wall. This damping layer attenuates vibrations in the composite shelf so as to reduce vibrations transmitted from the composite shelf to the disk drives supported by the composite shelf. A second damping layer is placed between the stiffener and the other wall. Both damping layers attenuate vibrations in the composite shelf so as to reduce vibrations transmitted from the composite shelf to the disk drives supported by the composite shelf. A third damping layer may be placed within the stiffener.Type: GrantFiled: November 15, 1996Date of Patent: January 12, 1999Assignee: Digital Equipment CorporationInventors: Ewaryst Zygmunt Polch, Chad Everett Dewitt, Theodore Ernst Bruning, III, Nanjappa Bakthavachalam, Robert George Ducharme
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Patent number: 5786051Abstract: An ink transfer roller for a support roller or support bar, in particular of metal, with a stretchable, interchangeable fiber-reinforced laminated plastic material cover (K) covered with a metal-ceramic layer (MK), which is provided with small ink transfer cups (FN), wherein the laminated plastic material cover (K) consists of a stretchable inner cover (UB) and an outer cover (OB), between which a foamed material compressible layer (SS) is enclosed.Type: GrantFiled: November 7, 1995Date of Patent: July 28, 1998Assignee: Kurt Zecher GmbHInventors: Georg Niggemeier, Franz-Josef Driller, Roland Brinkman
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Patent number: 5768990Abstract: A tubular printing blanket for a blanket cylinder in an offset printing press comprises a cylindrical sleeve, a compressible layer over the sleeve, and an inextensible layer over the compressible layer. The cylindrical sleeve is movable telescopically over a blanket cylinder. The compressible layer comprises a first seamless tubular body of elastomeric material containing compressible microspheres. The inextensible layer comprises a second seamless tubular body of elastomeric material containing a tubular sublayer of circumferentially inextensible material. A seamless tubular printing layer over the inextensible layer has a continuous, gapless cylindrical printing surface. Methods of manufacturing the tubular printing blanket are also disclosed.Type: GrantFiled: July 19, 1996Date of Patent: June 23, 1998Assignee: Heidelberg Harris, Inc.Inventors: James B. Vrotacoe, Glenn Alan Guaraldi, James R. Carlson, Gregory T. Squires
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Patent number: 5766720Abstract: An absorber of impact-caused vibrations which is excellent in absorbing impact-caused vibrations, particularly relates to vibration absorption from sports instruments, tools or bicycle associated with impact-caused vibrations, for example, with the absorber of impact-caused vibrations made of a weight and an elastomer attached to a part of devices such as grip end, absorbs impact-caused vibration energy by converting impact-caused vibrations of devices to moving energy of a weight.Type: GrantFiled: August 2, 1995Date of Patent: June 16, 1998Assignee: Toray Industries, Inc.Inventors: Masahiro Yamagishi, Hisashi Tazawa, Takehiro Hirahara
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Patent number: 5754931Abstract: The present invention relates to a digital printing blanket carcass for supporting a transfer layer having an outer surface which is capable of transferring electrostatic particles. This carcass includes an upper layer of a resilient material which can withstand a temperature of up to about 150.degree. C., such as silicone rubber, hydrogenated nitrile rubber, an acrylic rubber or a fluoroelastomer; a compressible layer of an elastomeric matrix material having a plurality of open or closed cells therein; and a fabric layer of a fiber material which can withstand a temperature of up to about 150.degree. C., such as carbon, boron, a metal, fiberglass, a polyimide, or an aromatic polyamide.Type: GrantFiled: June 10, 1996Date of Patent: May 19, 1998Assignee: Reeves Brothers, Inc.Inventors: Francesco Castelli, Giampietro Invernizzi
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Patent number: 5749298Abstract: A metal backed printing blanket for mounting on a cylinder that includes a gap. The blanket comprises a metal base plate having top and bottom surfaces and ends which include leading and trailing edges adapted for engaging the cylinder gap. The article further comprises a compressible, elastomeric printing blanket secured to the top surface of the base plate, but not to the ends, and having an upper face adapted for contact transfer of ink to a printable substrate. In addition, the blanket is provided with an anti-slip layer upon at least a portion of the top surface of at least one end of the base plate to facilitate retention of the base plate ends within the gap during rotation of the cylinder. The anti-slip layer has a coefficient of friction that is greater than that of the base plate and a thickness sufficient to permit insertion of the base plate edges and ends into the cylinder gap.Type: GrantFiled: June 10, 1997Date of Patent: May 12, 1998Assignee: Reeves Brothers, Inc.Inventors: Francesco Castelli, Gianpietro Invernizzi, Omar Reale
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Patent number: 5750259Abstract: A hot soft nip calender apparatus is provided for a paper mill. The apparatus includes at least one heated calender roller and a finishing belt which is moved in proximity to the heated calender roller by a plurality of drive rollers and at least one pressure roller. Thus, a heated calender nip is defined between the heated calender roller and the finishing belt. A web of paper is passed through the nip, such that one surface of the web of paper is contacted by the heated calender roller, while the opposed surface of the web is contacted by the finishing belt. The finishing belt has an extremely smooth surface for contacting the web of paper so as to impart appropriate smoothness and gloss characteristics to that surface. The finishing belt can readily be changed when worn or damaged or to alter the characteristics being imparted to a web of paper.Type: GrantFiled: May 8, 1995Date of Patent: May 12, 1998Inventors: Thomas M. Neider, Robert L. Rudt
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Patent number: 5718968Abstract: An expanded, memory molded, increased density, highly impact-resistant polystyrene construct, and method of making the construct. The construct is formed by molding pre-expanded non-equilibrated polystyrene beads to a first volume, cooling rapidly, and then compression molding to a final, smaller volume. The resultant constructs have increased density, and high impact strength without increase in embrittlement. Also, the construct has "memory" in the sense that it returns substantially to its original shape after impact.Type: GrantFiled: January 11, 1996Date of Patent: February 17, 1998Assignee: Motherlode, L.L.C.Inventors: Philip W. Cutler, Blue H. E. Goulding
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Patent number: 5700343Abstract: A method of manufacturing a cylindrical compressible laminate using the floating knife or knife over roll spreading techniques to apply an inner compressible layer and outer or surface layer of a substantially incompressible material. The coating system includes a coating head to dispense an elastomeric material onto a rotating laminate and a knife blade that is parallel to the axis of rotation to distribute and spread a uniform coating of the elastomeric material. The knife blade can be raised incrementally on each rotation of the laminate so that an additional coating can be applied, until a layer of a desired thickness is obtained. In the preferred embodiment, the coatings are at least partially cured during each rotation.Type: GrantFiled: January 16, 1996Date of Patent: December 23, 1997Assignee: Reeves Brothers, Inc.Inventors: Francesco Castelli, Gianpiero Invernizzi
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Patent number: 5643381Abstract: A blanket belt for use in a printing machine is produced through a producing step including a reinforcement member setting step P1 of setting a reinforcement member 3 onto a mold having teeth shape at an outer circumferential surface thereof, a rubber sheet setting step P2 of setting a green rubber sheet made of a rubber material for use in a blanket, on the reinforcement member 3 set onto the mold, a vulcanizing step P3 of forming teeth T . . . for use in a timing belt on an inner surface thereof by vulcanizing an intermediate produced article obtained on the rubber sheet setting step P2, and obtaining an endless timing belt having the reinforcement member 3 at an inside thereof, and a blanket surface working step P4 of working an outer surface of the timing belt on a blanket surface, after vulcanizing.Thereby, both of expansion and contraction of a blanket surface and a slip thereof to the pulleys are prevented effectively.Type: GrantFiled: December 11, 1995Date of Patent: July 1, 1997Assignees: Nagano Japan Radio Co., Ltd., Gradco (Japan) Ltd.Inventors: Tomoaki Iwafune, Koichi Kamoi
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Patent number: 5578364Abstract: A gravure plate assembly having an elastomer pad sandwiched between a more rigid base plate and a less rigid metal top plate bearing an engraving surface.Type: GrantFiled: May 3, 1995Date of Patent: November 26, 1996Assignee: Markem CorporationInventors: L. Edward Drew, II, Robert B. Scheuhing
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Patent number: 5571594Abstract: In order to properly hold a number of miniaturized electronic component chips so that processing such as formation of external electrodes can be efficiently performed, a holder having an adhesive face to be stuck to first end surfaces of a number of electronic component chips for holding the electronic component chips is employed. The number of electronic component chips being held by the holder are dipped in electrode paste, so that external electrodes are formed on second end surfaces thereof. Then, an adhesive face of another holder having stronger adhesion than the adhesive face of the first holder is stuck to the electronic component chips, whereby the number of electronic component chips are simultaneously transferred to this holder. The first end surfaces are then also dipped in electrode paste to form external electrodes thereon.Type: GrantFiled: November 14, 1994Date of Patent: November 5, 1996Assignee: Murata Manufacturing Co., Ltd.Inventors: Kenji Minowa, Norio Sakai, Tetsuro Saito, Toshimi Yoshimura