# US 5,700,582 A · Polymer matrix coating for ink jet media > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,700,582 A - Document ID: US5700582A - Status: Granted - Kind: A - Application number: 08/623,102 - Filed: 1996-03-28 - Granted: 1997-12-23 - Earliest claimed: 1994-12-12 - Assignees: Arkwright Incorporated - Inventors: Steven J. Sargeant; Niall D. Behan; Dave Atherton; Sen Yang; Miaoling Huang; Kang Sun - Web page: https://patentgrep.com/patent/US5700582A ## CPC - B41M 5/52: Macromolecular coatings - B41M 5/506: {Intermediate layers} - B41M 5/508: {Supports} - B41M 5/5218: {characterised by inorganic additives, e.g. pigments, clays} - B41M 5/5236: {characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose} - B41M 5/5254: {characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers} - B41M 5/5281: {Polyurethanes or polyureas} - B41M 5/529: {characterised by the use of fluorine- or silicon-containing organic compounds} - Y10T 428/252: Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.] - Y10T 428/254: Polymeric or resinous material - Y10T 428/256: Heavy metal or aluminum or compound thereof - Y10T 428/257: Iron oxide or aluminum oxide - Y10T 428/258: Alkali metal or alkaline earth metal or compound thereof - Y10T 428/259: Silicic material - Y10T 428/31855: Of addition polymer from unsaturated monomers - Y10T 428/31928: Ester, halide or nitrile of addition polymer - Y10T 428/31935: Ester, halide or nitrile of addition polymer - Y10T 428/31971: Of carbohydrate - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention is directed to a polymer matrix coating used for ink jet recording media. The polymer matrix coating has a glass transition temperature that is greater than or equal to about 120.degree. C. and less than or equal to about 300.degree. C., an integrity value of greater than or equal to about -20% and a swellability of greater than or equal to about 50%. The coating avoids the problem of pigment ink cracking that can occur in conventional ink jet recording media. ## Claims ### Claim 1 An ink jet recording medium, comprising a base substrate that has coated on a surface thereof a polymer matrix coating that can receive a pigmented ink and which contains at least one layer having a glass transition temperature that is greater than or equal to about 120.degree. C. and less than or equal to about 300.degree. C., an integrity value greater than or equal to about -20% and a swellability greater than or equal to about 50%. ### Claim 2 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating contains at least one water-soluble component. ### Claim 3 (depends on 2) The ink jet recording medium according to claim 2, wherein said water-soluble component is soluble in water in an amount of about at least 1% on a wt/wt basis at a temperature in the range of about 5.degree. C. to about 100.degree. C. ### Claim 4 (depends on 2) The ink jet recording medium according to claim 2, wherein said water-soluble component is selected from the group consisting of poly(vinyl alcohol), cellulose ethers, cellulose esters, poly(vinyl pyrrolidone), gelatins, poly(vinyl acetate), starch, poly(acrylic acids), poly(ethylene oxide), proteins, hydroxypropyl cyclodextrin, poly(2-ethyl-2-oxazoline), alginates and water-soluble gums. ### Claim 5 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating contains at least one water-soluble component and at least one water-insoluble component. ### Claim 6 (depends on 5) The ink jet recording medium according to claim 5, wherein: said water-soluble component is soluble in water in an amount of about at least 1% on a wt/wt basis of the water-soluble component in water at a temperature in the range of about 5.degree. C. to about 100.degree. C. ### Claim 7 (depends on 5) The ink jet recording medium according to claim 5, wherein said water-soluble component is selected from the group consisting of poly(vinyl alcohol), cellulose ethers, cellulose esters, poly(vinyl pyrrolidone), gelatins, poly(vinyl acetate), starch, poly(acrylic acids), poly(ethylene oxide), proteins, hydroxypropyl cyclodextrin, poly(2-ethyl-2-oxazoline), alginates and water-soluble gums. ### Claim 8 (depends on 5) The ink jet recording medium according to claim 5, wherein said water-insoluble component is selected from the group consisting of 2-hydroxyethyl methacrylate, hydroxypropyl methacrylate, 2,3-dihydroxypropyl methacrylate, styrene, 5-hydroxy-3-oxapentyl methacrylate, 8-hydroxy-3,6-dioxaoctyl methacrylate, N-hydroxyethyl acrylamide, urethane, N-hydroxymethyl acrylamide, dimethylaminoethyl methacrylate, alkyl methacrylate, N-methyloacrylamide and hydroxypropyl acrylate. ### Claim 9 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating possesses a single layer structure. ### Claim 10 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating possesses a multi-layer structure. ### Claim 11 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating upon receiving a pigmented ink gives a black image optical density of greater than or equal to about 1.70 on a transparent substrate. ### Claim 12 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating possesses multiple glass transition temperatures and wherein at least one of said glass transition temperatures is greater than or equal to about 120.degree. C. and less than or equal to about 300.degree. C. ### Claim 13 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating comprises inorganic particulates which are selected from the group consisting of silica, alumina, kaolin, glass beads, calcium carbonate and titanium oxide. ### Claim 14 (depends on 1) The ink jet recording medium according to claim 1, wherein said polymer matrix coating comprises organic particulates which are selected from the group consisting of polyolefins, polystyrene, starch, poly(methyl methacrylate), poly(urethane), and polytetrafluoroethylene. ### Claim 15 (depends on 1) The ink jet recording medium according to claim 1, wherein said base substrate is a transparent plastic, a translucent plastic, a matte plastic or an opaque plastic. ### Claim 16 (depends on 1) The ink jet recording medium according to claim 1, wherein said base substrate is a poly(ethylene terephthalate) film. ### Claim 17 (depends on 1) The ink jet recording medium according to claim 1, wherein said base substrate is a paper. ### Claim 18 (depends on 1) The ink jet recording medium according to claim 1, wherein said base substrate is a clay coated paper or a polyolefin coated paper. ### Claim 19 An ink jet recording medium, comprising a base substrate that has coated on a surface thereof a polymer matrix coating that can receive a pigmented ink and which contains at least one layer having a glass transition temperature that is greater than or equal to about 120.degree. C. and less than or equal to about 300.degree. C., an integrity value greater than or equal to about -20%, and a swellability greater than or equal to about 50%; and said polymer matrix coating comprising a water-soluble component which is soluble in water in an amount of about at least 1% on a wt/wt basis of the water-soluble component in water at a temperature in the range of about 5.degree. C. to about 100.degree. C. ### Claim 20 An ink jet recording medium, comprising a base substrate that has coated on a surface thereof a polymer matrix coating that can receive a pigmented ink and which contains at least one layer having a glass transition temperature that is greater than or equal to about 120.degree. C. and less than or equal to about 300.degree. C., an integrity value greater than or equal to about -20%, and a swellability greater than or equal to about 50%; and said polymer matrix coating comprising a water-soluble component which is soluble in water in an amount of about at least 1% on a wt/wt basis of the water-soluble component in water at a temperature in the range of about 5.degree. C. to about 100.degree. C., and a water-insoluble component.