Patents by Inventor Barry Pack
Barry Pack has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7152973Abstract: A receiver medium for inkjet printing includes a porous substrate, having on at least one surface thereof a porous ink-absorbent coating having a colloidal particulate material, a water-insoluble liner binder polymer, and optionally a film forming polymer dispersion. On printing, the medium rapidly absorbs ink to give a touch-dry surface. The receiver medium can also have a satin finish surface. Also disclosed is a method of making the receiver medium.Type: GrantFiled: March 25, 2002Date of Patent: December 26, 2006Assignee: Imperial Chemical Industries PLCInventors: Richard Anthony Hann, Barry Pack
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Patent number: 6838136Abstract: The present invention relates to a coating material for producing a porous ink-absorbent coating on a substrate to be used in ink-jet printers, comprising radiation curable material and particulate material in a liquid carrier, wherein the weight ratio of particulate material to radiation curable material is greater than 1:1. Also disclosed is a process for preparing a coated substrate using such a coating material. Advantageously, the coating material of the present invention does not crack upon curing, and conveniently forms a porous coating having a glossy surface, while retaining a porous structure for ink-absorption.Type: GrantFiled: May 31, 2001Date of Patent: January 4, 2005Assignee: Imperial Chemical Industries PLCInventors: Richard Anthony Hann, Barry Pack, Alan Butters, Jeffrey Michael Howell
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Publication number: 20040101639Abstract: A receiver medium for inkjet printing comprises a porous substrate (typically paper), having on at least one surface thereof a porous ink-absorbent coating comprising a colloidal particulate material (such as silica), a water-insoluble linear binder polymer, and optionally a film-forming polymer dispersion (such as an acrylic copolymer comprising tertiary amino groups). On printing, the medium rapidly absorbs ink to give a touch-dry surface. The receiver medium can also have a satin finish surface. Also disclosed is a method of making the receiver medium.Type: ApplicationFiled: September 29, 2003Publication date: May 27, 2004Inventors: Richard Anthony Hann, Barry Pack
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Publication number: 20030142186Abstract: The present invention relates to a coating material for producing a porous ink-absorbent coating on a substrate to be used in ink-jet printers, comprising radiation curable material and particulate material in a liquid carrier, wherein the weight ratio of particulate material to radiation curable material is greater than 1:1. Also disclosed is a process for preparing a coated substrate using such a coating material. Advantageously, the coating material of the present invention does not crack upon curing, and conveniently forms a porous coating having a glossy surface, while retaining a porous structure for ink-absorption.Type: ApplicationFiled: November 25, 2002Publication date: July 31, 2003Inventors: Richard Anthony Hann, Barry Pack, Alan Butters, Jeffrey Michael Howell
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Patent number: 5700756Abstract: A dyesheet for thermal transfer printing comprising a thermoplastic substrate film supporting a dyecoat containing a thermal transfer dye on one surface and a heat resistant backcoat on the other, wherein the backcoat comprises the following components:a) a crosslinked polymeric binder having a thickness t and containing therein a combination ofb) lubricating particles andc) load-bearing particles having an average diameter greater than t,and the haze value is less than 12%.Type: GrantFiled: April 2, 1996Date of Patent: December 23, 1997Assignee: Imperial Chemical Industries PLCInventor: Barry Pack
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Patent number: 5300474Abstract: A dyesheet is provided for thermal transfer printing, comprising a base sheet having a thermal transfer dye layer on one surface, and on the other a heat resistant backcoat comprising a crosslinked reaction product of radically polymerising a compound having a plurality of polymerisable unsaturated groups per molecule, wherein the backcoat is formulated to minimise scratching of the print during printing. The formulation comprises a) a compound having a single radically polymerisable unsaturated group which is copolymerised with the compound having a plurality of polymerisable unsaturated groups per molecule, and b) a multivalent metal salt of a long chain alkyl or alkylphenyl phosphate ester as slip agent. These two factors (a & b) work together, and if either is omitted, relief from scratching does not generally occur.Type: GrantFiled: May 24, 1991Date of Patent: April 5, 1994Assignee: Imperial Chemical Industries PLCInventors: Kazuhiko Sakata, Warren T. Smith, Richard A. Hann, Barry Pack
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Patent number: 5248653Abstract: A dyesheet is provided for thermal transfer printing, comprising a base sheet having a dyecoat containing a thermal transfer dye layer on one surface, and on the other a croselinked heat resistant backcoat formulated to minimize dye migration from the dyecoat to the backcoat during storage. The backcoat comprises the reaction product of radically copolymerising in a layer of coating composition, a) at least one organic compound having a plurality of radically polymerisable unsaturated groups per molecule, and b) at least one organic compound having per molecule a single unsaturated group radically copolymerisable with constituent a, and having at least one alicyclic group per molecule. Preferred additional constituents include slip agents, especially a multivalent metal salt of a long chain alkyl or alkylphenyl phosphate ester.Type: GrantFiled: May 24, 1991Date of Patent: September 28, 1993Assignee: Imperial Chemical Industries PLCInventors: Kazuhiko Sakata, Warren T. Smith, Richard A. Hann, Barry Pack
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Patent number: 5104847Abstract: To enhance the optical density of colors produced by thermal transfer printing, a dyesheet is used having an intermediate dye-barrier layer between the substrate and the dyecoat. This layer consists essentially of a reaction product of polymerizing acrylic functional groups in a layer of a coating composition comprising: (a) an organic resin comprising at least one polyfunctional material having a plurality of pendant or terminal acrylic groups per molecule available for cross-linking, at least 50% by weight of the polyfunctional material having at least 4 such acrylic functional groups per molecule; and (b) at least one linear organic polymer soluble or partially soluble in the resin, and comprising 1-40% by weight of the resin/polymer mixture.Type: GrantFiled: October 26, 1988Date of Patent: April 14, 1992Assignee: Imperial Chemical Industries plcInventors: Richard A. Hann, Barry Pack
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Patent number: 4950641Abstract: For a thermal transfer dyesheet, a protective backcoat is provided by polymerizing acrylic functional groups in a composition comprising: an organic resin comprising at least one polyfunctional material having a plurality of pendant or terminal acrylic groups per molecule available for cross-linking, at least 10% by weight of the polyfunctional material having 4-8 such acrylic groups per molecule; at least one linear organic polymer soluble or partially soluble in the resin, and comprising 1-40% by weight of the resin/polymer mixture; a slip agent selected from derivatives of long chain carboxylic or phosphoric acids, long alkyl chain esters of phosphoric acid, and long alkyl chain acrylates; an antistatic agent soluble in the resin, and a solid particulate antiblocking agent less than 5 .mu.m in diameter.Type: GrantFiled: October 26, 1988Date of Patent: August 21, 1990Assignee: Imperial Chemical Industries PLCInventors: Richard A. Hann, Barry Pack