Coating Opposite Sides Or Forming Plural Or Nonuniform Coats Patents (Class 427/152)
  • Patent number: 5098738
    Abstract: A process for producing a heat-sensitive recording material superior in the stability of both base surface and recorded image, characterized by adjusting pH of a heat-sensitive coating suspension of 5 to 12.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: March 24, 1992
    Assignees: Asahi Kasei Kogyo Kabushiki Kaisha, Mitsubishi Paper Mills Limited
    Inventors: Toshimitsu Nakajima, Shigetoshi Hiraishi
  • Patent number: 5094998
    Abstract: Disclosed in a fine-particle aggregate emulsion comprising aggregate particles formed from a copolymer (a) composed of an unsaturated carboxylic acid and a vinyl monomer copolymerizable therewith, and a foreign polymer (b) formed by polymerization of a vinyl monomer differing in composition from that used in copolymer (a), foreign polymer (b) being present in the form of particles having a diameter of 0.05 to 0.5 .mu., the aggregate particles having a diameter of 0.2 to 3.0 .mu..This fine-particle aggregate emulsion is useful in paints, paper coating and information recording paper.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: March 10, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Futoshi Hoshino, Makoto Nakano, Takeshi Yanagihara
  • Patent number: 5095001
    Abstract: A thermal transfer printing receiver sheet for use in association with a compatible donor sheet comprises a supporting substrate having a dye-receptive receiving layer, said dye receiving layer comprises a dye-receptive polymer and from 0.5 to 30% by weight of the layer of at least one antiplasticizer therefor.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: March 10, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Isabel S. Miles, Gary V. Rhoades, Moray W. Mackenzie
  • Patent number: 5093309
    Abstract: A TTP receiver sheet having a backing layer comprising a polymeric resin binder and a non-film forming inert particulate material of mean particle size from 5 to 250 nm.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: March 3, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Charles R. Hart, John Francis, Mark D. H. Jefferson
  • Patent number: 5093304
    Abstract: A heat-sensitive recording material having a superior resistance against water, plasticizers, and oily substances, is provided with a heat-sensitive color-forming layer formed on a surface of a substrate sheet and comprising a dye precursor, a color-developing agent, and a binder; and a protecting layer formed on the heat-sensitive color-forming layer and comprising (A) a polyvinylalcohol resin, (B) a water-soluble cross-linking agent, (C) at least one organic boron-containing polymer of the formula (I): ##STR1## and optionally (D) an acetoacetylated polyvinylalcohol resin.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: March 3, 1992
    Assignee: Oji Paper Co., Ltd.
    Inventors: Atsushi Nakazawa, Hideaki Shinohara, Yoshitaka Tomino, Yoichi Shin
  • Patent number: 5091356
    Abstract: A thermosensitive recording member comprises (1) a substrate, (2) a foamed dispersion layer, provided on the substrate, in which an aqueous, self-emulsifiable resin having an I/O value of 0.6 to 1.1 has been dispersed, and (3) a thermosensitive coloring layer, provided on the foamed dispersion layer, containing an electron-donating dye and an electron-accepting compound to present a color by reacting with the dye, improved in sensitivity.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: February 25, 1992
    Assignee: Kao Corporation
    Inventor: Norihiko Nakashima
  • Patent number: 5091357
    Abstract: A heat-sensitive recording material comprising a substrate, an intermediate layer formed on the substrate, and a heat-sensitive recording layer formed on the intermediate layer, said intermediate layer comprising an inorganic powder having an oil absorption of 50 ml/100 g or more as measured in accordance with JIS K5101, an aqueous adhesive and a carboxymethyl cellulose in an amount of 3 to 20% by weight based on the weight of the aqueous adhesive, and said heat-sensitive recording layer comprising an electron-donating, colorless dye precursor, an electron-accepting developer and a sensitizer. Said heat-sensitive recording material has a high sensitivity and hardly causes scum adhesion to a thermal head.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: February 25, 1992
    Assignee: Mitsubishi Paper Mills Limited
    Inventor: Takao Kosaka
  • Patent number: 5087603
    Abstract: A compound having a carboxy group and a long-chain alkylthio group and/or a salt thereof is used as an emulsifier and, on the other hand, emulsion polymerization is carried out using a polymerizable monomer or monomers having, within their molecule, a group reactive with a carboxyl group as raw materials for emulsion polymerization, whereby the resin produced by emulsion polymerization and the emulsifier react with each other efficiently on the occasion of film formation and form a crosslinked structure. When a compound having a polymerizable unsaturated group in addition to the carboxyl group and long-chain alkylthio group and/or a salt thereof is used as the emulsifier, not only the above-mentioned crosslinked structure is formed but also the polymerizable unsaturated group in the emulsifier will react with the unsaturated group in the polymerizable monomer or monomers in the manner of grafting. As a result, the compatibility between the emulsifier and the emulsion-polymerized resin is improved.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: February 11, 1992
    Assignees: Nippon Shokubai Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Masuji Izubayashi, Masatoshi Yoshida, Toshiaki Matsunaga, Kohei Hori, Teruo Kikuta, Shiro Nakano, Hidetoshi Hatta
  • Patent number: 5084432
    Abstract: A developer sheet is composed, in one embodiment, of a reflecting layer formed by securely bonding an aluminum or other metal foil on a substrate and a developer layer formed on the reflecting layer. The developer sheet is capable of forming a color picture image on the reflecting layer, producing ornamental or decorative effects with high commercial value.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: January 28, 1992
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shunichi Higashiyama
  • Patent number: 5079212
    Abstract: Disclosed is a heat-sensitive recording material comprising:(a) a base sheet;(b) a heat-sensitive recording layer formed on the base sheet land comprising a colorless or pale-colored basic dye and a color developing material which develops a color on contact with the dye; and(c) a protective layer formed on the recording layer and comprising a binder and at least one metal salt selected from the group consisting of magnesium acetate, calcium acetate, aluminum acetate, magnesium formate, calcium formate and aluminum formate.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: January 7, 1992
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Koichi Ishida, Katsuaki Yoshizawa, Yukio Takayama
  • Patent number: 5075369
    Abstract: Disclosed is a heat-sensitive recording material useful in the manufacture of thermal paper and thermal labels. The material comprises a cellulosic or other suitable substrate, a thermally imprintable color-producing layer, and a protective layer over the color-producing layer. It may also include a second protective layer and/or a pressure-sensitive adhesive layer, on the surface of the substrate opposite from the color-producing layer, and a releasable liner covering the adhesive layer. The color-producing layer includes a basic, acid-neutralizing agent for both reducing background discoloration during manufacturing and increasing image definition. The protective layer comprises a polymeric binder which is both ionically and covalently cross-linked to provide improved resistance to hydrophobic and hydrophillic solvents.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: December 24, 1991
    Assignee: Nashua Corporation
    Inventor: Meftah U. Mahmud
  • Patent number: 5068123
    Abstract: A process for producing a recording medium comprising a substrate and a plurality of image forming elements disposed thereon, which comprises the steps of: applying a binder onto the substrate to form thereon a binder layer; disposing the image forming elements on the binder layer; and simultaneously applying a vibration and a pressure to the image forming elements disposed on the binder layer sufficient to bond the image forming elements to the substrate as a substantially monoparticle layer.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: November 26, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Goto, Toshiaki Harada, Noriyoshi Ishikawa
  • Patent number: 5064806
    Abstract: A thermosensitive recording material bearing a specific intermediate layer comprising a specific alkyl ammonium salt provides a high color density even with a low printing energy and minimized background strain. The intermediate layer is provided between a support and a thermosensitive recording layer.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: November 12, 1991
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Takahiro Torii, Masahiro Miyauchi, Haruyoshi Funae, Tomonori Kiriyama
  • Patent number: 5061677
    Abstract: A thermo-sensitive recording label paper comprising a laminate which comprises(1) a thermo-sensitive color-developing layer containing at least a colorless or lightly colored leuco-dye provided on one surface of a paper support, (2) a protective layer provided on the color-developing layer, and (3) at least one of a back layer and a protective underlayer, said back layer being provided on the other surface of the paper support, and said protective underlayer being provided between said paper support and said color-developing layer;the laminate having an internal bond strength of 2.5 kg-cm or more according to Tappi UM-403, and the surface of the protective layer of the laminate having a Bekk smoothness of 500 seconds or more according to JIS P8119.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: October 29, 1991
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Mitsuhiro Yoshida, Nobuyuki Nakayama, Yasuhiro Yamanashi, Tosio Huzii
  • Patent number: 5051279
    Abstract: A thermal recording sheet having on a support a thermal recording layer adapted for developing color when heated has an outermost surface layer formed by bringing it into contact with the surface of a smooth body when it is in a wet state, drying it and separating it from the surface of the smooth body. The sheet has a surface which is so smooth that when a first straight line extending in parallel to the centerline of a roughness curve as obtained in accordance with the method of JIS B0601 crosses the roughness curve with a contact ratio of 10%, a second straight line extending in parallel to the centerline and between it and the first straight line and having a distance of 1.5 .mu.m from the first straight line crosses the roughness curve with a contact ratio of at least 80%. The sheet is, therefore, easy to bring into intimate contact with a thermal head and is of high image quality and sensitivity.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: September 24, 1991
    Assignee: Kohjin Co., Ltd.
    Inventors: Masayuki Murata, Shinichiro Katsuta, Tomoyuki Unno
  • Patent number: 5047383
    Abstract: An improved heat-sensitive recording material of the type having a substrate and a heat-sensitive recording layer formed on said substrate, said heat-sensitive recording layer containing a color former and a color developer to color said color former upon contact by heating, characterized in that said substrate comprises an adiabatic foamed polyester resin film containing minutes cavities with an apparent specific gravity in the range of 0.9 to 1.2.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: September 10, 1991
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Hiroo Hayashi, Katsuhiko Ishida, Toshimitsu Arikawa
  • Patent number: 5043314
    Abstract: A recording medium which enables formation of an image on any desired substrate is disclosed, which comprises a support having provided thereon at least a color developer capable of color-forming reaction with a dye precursor, and an adhesive such as heat-sensitive adhesives, tackifying composition, etc.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: August 27, 1991
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Koji Suzuki, Jun Sakai, Shunichi Higashiyama, Keiko Suzuki, Mikio Imaeda
  • Patent number: 5037696
    Abstract: A substrate for heat-sensitive recording material is disclosed, comprising a film-like substrate made mainly of a synthetic resin and a sheet-like substrate made mainly of a fibrous materials laminated each other with an electron beam-curable adhesive. A heat-sensitive recording material using the above substrate provides an image having excellent quality.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: August 6, 1991
    Assignee: Kanzaki Paper Mfg. Co., Ltd.
    Inventors: Junichi Miyake, Masami Kanemoto, Hironari Fujioka, Hiroo Hayashi
  • Patent number: 5035954
    Abstract: The heat-sensitive record materials have, between the base sheet and the recording layer, a middle layer which mainly comprises a binder and at least one pigment having an oil absorption of at leasat 80 cc/100 g measured by JIS K 5101. The middle layer comprises an acrylic thickener in an amount of 0.05 to 5 parts by weight per 100 parts by weight of the pigment on dry basis.The middle layer is formed by blade-coating on a base sheet a coating composition comprising at least one pigment having an oil absorption of at least 80 cc/100 g measured by JIS K 5101 and a binder, in which an acrylic thickener is comprised in such amount as described above.
    Type: Grant
    Filed: August 22, 1989
    Date of Patent: July 30, 1991
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Naoki Yonese, Mikio Nakamura, Masato Kawamura, Yukio Takayama
  • Patent number: 5030539
    Abstract: Disclosed is a developer sheet useful in forming reproductions having a glossy finish, or in forming transparencies comprising:a support having a layer of a finely divided, thermoplastic, developer material on the surface thereof, said developer material being capable of reacting with a color precursor to produce a visible image and being capable of coalescing into a thin film which imparts gloss to said image upon application of heat and/or pressure, and having a surfactant admixed within said layer of developer material to aid in the coalescing of said developer material into a thin film.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: July 9, 1991
    Assignee: The Mead Corporation
    Inventors: Karl A. Kintz, Robert A. Landis, Kelli J. Borello
  • Patent number: 5028580
    Abstract: A heat sensitive material which is comprised of a support having thereon a transparent heat sensitive layer and at least one layer selected from among a protective layer, a subbing layer and backing layer, wherein at least one of constituent layer contains fine grains of at least one crystalline metal oxide which has a volume resistivity ranging from 10.degree. to 10.sup.5 ohm.multidot.cm. An amount of said crystalline metal oxide is 0.0001 g-1 g per m.sup.2 and the best metal oxide is SnO.sub.2.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: July 2, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akihiro Shimomura, Toshimasa Usami
  • Patent number: 5019421
    Abstract: A thermal transfer meltable color layer receives a protective polymer coating on the side thereof, to be contacted with the thermal printing head to hold the meltable color material away from the printing head, thereby forming a thermal printing ribbon without the need for a support foil.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: May 28, 1991
    Assignee: Pelikan Aktiengesellschaft
    Inventors: Norbert Mecke, Heinrich Krauter
  • Patent number: 5008231
    Abstract: Disclosed is a heat-sensitive recording material comprising a support; a heat-sensitive recording layer formed over the support and containing a color forming material, a color developing material which forms a color on contact with the color forming material and a pigment which is about 80 to about 400 ml/100 g in oil absorption according to JIS K 5101 and about 3 to about 15 .mu.m in average particle size; and an overcoat layer formed over the heat-sensitive recording layer and comprising a binder and a pigment, wherein the pigment is used in an amount of about 0.5 to about 3.0 parts by weight per part by weight of the binder and the coating amount of the overcoat layer is about 0.3 to about 2.0 g/m.sup.2 on dry basis.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 16, 1991
    Assignee: Kanzaki Paper Manufacturing Company Limited
    Inventors: Katsuaki Yoshizawa, Yoshitaka Oeda
  • Patent number: 4999076
    Abstract: Methods of preparation of dry transfer graphics article. The article is self-weeding to transfer fine graphic images without the use of detackifying radiation, solvents, etc. One of the elements of the article is a carrier having a surface which is compatible with an adhesive having a low work to fracture. The article further comprises a graphic pattern formed on the adhesive.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: March 12, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joseph H. Incremona, Richard H. Lundeen
  • Patent number: 4999331
    Abstract: In a photo and pressure sensitive recording medium, a layer of microcapsules is carried on a side of a substrate sheet. The side of the substrate sheet is subject to adhesion-facilitating processing.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: March 12, 1991
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takemi Yamamoto, Shunichi Higashiyama
  • Patent number: 4999334
    Abstract: A protective coating composition for protection of thermal images on thermal paper is provided. A mixture of oligomers, monomers, and a photocatalyst are blended together, coated onto thermal paper and then cured by ultraviolet radiation. The coating provides protection to images subsequently printed on the paper by providing resistance to solvents, abrasion and fading due to exposure to light.
    Type: Grant
    Filed: March 1, 1990
    Date of Patent: March 12, 1991
    Assignee: The Standard Register Co.
    Inventors: Rajendra Mehta, Dale Lakes, William Saluke
  • Patent number: 4997806
    Abstract: By providing an intermediate layer composed of colloidal silica and/or alumina between a support and a thermosensitive color forming layer, a thermosensitive recording material having high color sensitivity which is free from undesirable foreign matters adhered to a thermal head can be provided. The colloidal silica and/or colloidal alumina is used in a coverage of 1 to 15 g/m.sup.2.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: March 5, 1991
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventor: Takahiro Torii
  • Patent number: 4996182
    Abstract: A heat-sensitive recording material which comprises a heat-sensitive recording layer and a substrate, the substrate having as a constituent element a synthetic resin film layer containing minute cavities and a content of cavities in the synthetic resin film layer being 40 to 100 cc/100 g. The heat-sensitive recording material has excellent resolution and gives a clear recorded image having a high density even with low printing energy.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: February 26, 1991
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Takeshi Matsui, Takehiko Watanabe, Katsunori Miyazaki, Hiroo Hayashi
  • Patent number: 4992411
    Abstract: There is disclosed a thermal recording paper comprising a support having a roughness index, measured by the method of liquid absorption test on paper and board (Bristow's method) in Japan TAPPI paper pulp test method No. 51-87, of not more than 8 ml/m.sup.2, a thermal recording layer, and an intermediate layer formed therebetween.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: February 12, 1991
    Assignee: Mitsubishi Paper Mills Limited
    Inventor: Hirokazu Ohkura
  • Patent number: 4992412
    Abstract: A process for preparing a developer sheet and a developer sheet are disclosed wherein an aqueous dispersion of a phenolic resin containing about 30 to 60% by weight of a phenolic resin is applied to the front surface of a substrate; the composition provides good image intensity and when applied at a controlled rate in full or spot coverage can be used on press with limited drying.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: February 12, 1991
    Assignee: The Mead Corporation
    Inventor: Robert A. Fetters
  • Patent number: 4990483
    Abstract: There is disclosed a thermosensitive recording material comprising a support, an undercoat layer provided thereon and comprising a first layer formed on the support and containing a pigment; a second layer formed on the first layer and containing an ureaformaldehyde resin, and a thermosensitive recording layer provided on the undercoat layer and containing a dye precursor and a developer capable of developing the color of the dye precursor when heated.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: February 5, 1991
    Assignee: Mitsubishi Paper Mills Limited
    Inventor: Atsuo Goto
  • Patent number: 4987117
    Abstract: A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive recording layer, wherein (a) a microporous layer comprising at least one of a synthetic resin and a cellulose compound or (b) a layer comprising porous grains comprising secondary particles bound to the surface of primary particle as core is provided between the heat-sensitive recording layer and the support of the recording material.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: January 22, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yuichi Itabashi, Takayuki Hayashi, Akira Igarashi
  • Patent number: 4985394
    Abstract: A thermosensitive recording material is disclosed, which comprises a substrate, a thermosensitive coloring layer comprising a leuco dye and a color developer capable of inducing color formation in the leuco dye, formed on the substrate, and a protective layer comprising at least one inorganic pigment selected from the group consisting of silica and calcium carbonate, each having an average particle diameter of 0.1 .mu.m or less, and a water-soluble binder, formed on the thermosensitive coloring layer.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: January 15, 1991
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasutomo Mori, Norio Kurisu
  • Patent number: 4980337
    Abstract: A thermosensitive recording material is disclosed, which comprises (a) a heat insulating support having a foamed portion with minute voids therein, (b) an undercoat layer formed on the heat insulating support, comprising as the main component a film-forming polymeric material in an amount ranging from more than 50 wt. % to 100 wt. % of the entire weight of the undercoat layer, and (c) a thermosensitive coloring layer formed on the undercoat layer, comprising a leuco dye and a color developer for inducing color formation in the leuco dye upon application of heat thereto.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: December 25, 1990
    Assignee: Ricoh Company Ltd.
    Inventors: Kanjirou Kawasaki, Hiroshi Sakamoto, Hiroaki Inoue
  • Patent number: 4977133
    Abstract: In a heat sensitive recording material comprising a substrate and a heat sensitive recording layer thereon containing a colorless or light-colored basic dye and a color acceptor which is reactive with the dye to form a color when contacted therewith, the recording material characterized in that an emulsion containing complex particles of colloidal silica and at least one of acrylic polymer and styrene-acrylic polymer is added to a coating composition for the recording layer and/or a coating composition for a protective layer formed on the recording layer.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: December 11, 1990
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Kouichi Ishida, Mikio Nakamura, Yukio Takayama
  • Patent number: 4975408
    Abstract: A thermosensitive recording material which comprises a support, an intermediate layer including a foamed portion with minute voids, having a smoothness of 2,000 seconds or more in terms of Bekk's smoothness, and a thermosensitive coloring layer, successively formed on the support, and which layers show the compression strain of 20% or more when a pressure of 0.55 kg/cm.sup.2 is applied in accordance with the Japanese Industrial Standards (JIS) P-8118. This thermosensitive recording material shows the compression strain of 5% or more as a whole when a pressure of 0.55 kg/cm.sup.2 is applied in accordance with the JIS P-8118.
    Type: Grant
    Filed: July 26, 1988
    Date of Patent: December 4, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Takanori Motosugi, Hisashi Sakai, Hiroshi Yaguchi, Hideo Aihara
  • Patent number: 4973571
    Abstract: There is disclosed a thermosensitive recording material, comprising a support, a thermosensitive recording layer coated on said support and comprising a dye precursor and a color developer capable of developing a color of said dye precursor upon heating, and an porous undercoat layer comprising any one selected from water soluble polymers and latex resins and coated between said support and said thermosensitive recording layer.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: November 27, 1990
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Naomasa Koike, Atsuo Goto
  • Patent number: 4971941
    Abstract: An imaging sheet used for achieving color balance in a full-color imaging system is disclosed. The sheet is characterized by utilizing three sets of microcapsules, each containing a different colorless image-agent and a photohardenable or photosoftenable composition, and a corrective dye associated with the substrate. Association of the corrective dye with the substrate achieves color balance by equalizing the speed of the different colorless color-forming microcapsules.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: November 20, 1990
    Assignee: The Mead Corporation
    Inventors: James A. Dowler, Peter G. Engeldrum, Roger Jerry
  • Patent number: 4962079
    Abstract: This invention provides an overcoat composition for a heat-sensitive record material comprising as an effective component thereof an emulsion of graft copolymer prepared by graft-copolymerizing methyl (meth)acrylate (A), a lower hydroxalkyl (meth)acrylate (B) and (meth)acrylic acid (C) with a polyvinyl alcohol in the presence of water and a neutralization salt of diisobutylene-maleic anhydride copolymer; a heat-sensitive record material having a heat-sensitive layer coated over its surface with an overcoat composition defined above; and a process for preparing a heat-sensitive record material comprising coating the surface of the heat-sensitive layer of a heat-sensitive record material with an overcoat composition defined above.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: October 9, 1990
    Assignees: Mitsubishi Paper Mills Limited, Arakawa Chemical Industries, Ltd.
    Inventors: Hisashi Matsumoto, Masaaki Takami, deceased, Nobuyuki Takahashi, Tetsuya Inoue
  • Patent number: 4962072
    Abstract: Record material comprising a paper sheet having on its front a printable pigment coating and on its back isolated droplets of colour former solution each confined within a pressure rupturable barrier, wherein the pigment coating comprises a binder for the pigment together with a synthetic reactive sizing agent or a coating structure agent or both the sizing agent and the coating structure agent.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: October 9, 1990
    Assignee: The Wiggins Teape Group Limited
    Inventors: John B. Cooper, Kevin J. Clay
  • Patent number: 4960750
    Abstract: A recording sheet which comprises a substrate having a layer of a metal on the surface thereof and a layer of microcapsules, said microcapsules being bonded to one another by means of a crosslinking agent which has reactively interacted with reactive moieties on the surface of said microcapsules, to improve the adhesion of said microcapsule layer to said metal layer.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: October 2, 1990
    Assignee: The Mead Corporation
    Inventors: William A. Hammann, IV, Rong-Chang Liang, Teresa M. Thomas, Jesse Hipps, Sr.
  • Patent number: 4959343
    Abstract: Pressure sensitive carbonless transfer sheets are made capable of producing clear images by light impact marking means in multi-part carbonless forms packs containing at least six of the sheets, such as 8-12 sheets, by coating a chromogenic material onto a paper sheet characterized by a basis weight of 9-12 lbs of a ream of 500 sheets of paper each having dimensions of 17 by 22 inches, a thickness of 40-50 microns, a Gurley porosity of 400-4000 seconds, and a Bendtsen smoothness of 90-260 ml/min on the wire side and 60-280 ml/min on the felt side. Bar codes are also transferrable with good scannability through forms packs containing three or more sheets.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: September 25, 1990
    Inventor: Philip M. Weinstein
  • Patent number: 4957778
    Abstract: A chemically self-copying paper intended for use in the combinations of a top sheet (CB), bottom sheet (CF) and one or more interleaving sheets (CFB) or a chemically copying, self-containing paper. The paper is formed of two fiber layers manufactured in separate wire sections and couched together while wet. The wire side of the upper fiber layer and the top surface of the lower fiber layer are couched together. The components inducing the color reaction are contained in the upper fiber layer which has been in contact with a smooth-surfaced press roll during the production of the paper.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: September 18, 1990
    Assignee: A. Ahlstrom Corporation
    Inventor: Olavi A. Yrjala
  • Patent number: 4954477
    Abstract: A heat-sensitive recording material comprising a support, a heat-sensitive recording layer containing a color former and a color developer forming color by the contact with the color former formed on the support, an interlayer containing a water-soluble resin or a water-dispersible resin as the main component formed on the heat-sensitive recording layer, and an overcoat layer formed by forming a layer containing (1) a macromonomer having a polymerizable functional group at one terminal of the molecular chain, the main component of the segment being organopolysiloxane and (2) a resin capable of being cured by electron beams on the interlayer and curing the layer by the irradiation of electron beams.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: September 4, 1990
    Assignee: Kanzaki Paper Mfg. Co., Ltd.
    Inventors: Shigekazu Shuku, Shunichiro Mukoyoshi, Eiji Yuasa, Tsunefumi Yamori
  • Patent number: 4952551
    Abstract: The lower side of a transmitter sheet (1) of a copy form set of chemically reacting color reaction paper provided with a CB coating (2) is zonewise provided with an additional ink layer (4) e.g. on wax basis. On writing or printing upon the copy form set within the intensification zone (3) defined by the additional ink layer (4) the color pigments of the additional ink layer (4) are partially or completely dissolved by means of the CB substances of the CB coating and transmitted to the CF coating (5) of the receiver sheet (6). This results in that the copy is itensified within the area of the intensification zone (3), thus becoming particularly machine-readable.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: August 28, 1990
    Inventor: Walter Buehler
  • Patent number: 4950638
    Abstract: A thermosensitive recording material is disclosed, which comprises a support, and a thermosensitive recording layer formed on one side of the support, the thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: August 21, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Yukihiro Yuyama, Kenji Uematsu, Hiroaki Okuda, Hideo Aihara
  • Patent number: 4948772
    Abstract: Substantially flat surfaced emulsion particles polymerized vinyl monomer, having a concavity in at least one of the flat surfaces, a diameter D of from 0.1 to 5.0 .mu.m, and a particle diameter thickness d ratio (d/D) of 1.2 to 5.0, prepared by the step of (1) aqueous emulsion polymerizing a first vinyl monomer or mixture of monomers (a) to form vinyl polymer seed particles; and (2) aqueous emulsion polymerizing a second vinyl monomer or mixture of monomers (b) in the presence of the vinyl polymer seed particles and a non-aqueous organic solvent having a surface tention to water at 20.degree. C. of 48 dyne/cm or more, in a weight ratio of monomer (a) to monomer (b) of 0.5/99.5 to 50/50; and are useful in high performance recording material, paint compositions and paper coating compositions.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: August 14, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Futoshi Hoshino, Makoto Nakano, Takeshi Yanagihara
  • Patent number: 4948775
    Abstract: A heat-sensitive record material has a protective layer on the recording layer which is formed on a base sheet and which comprises a color forming material and a color developing material in the state of that they are contacted by heating to produce color images. The protective layer comprises a water-soluble high polymer and a polyethylene wax having an average particle size of 3 to 10 .mu.m. The protective layer comprising the granular polyethylene wax in an amount of 0.1 to 30 parts by weight per 100 parts by weight of the solid amount of the protective layer improves the property of the heat-sensitive record material, particularly the sliding property and the retainability of recorded images without accompanying either lowering the initial color density of recorded images or sticking.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: August 14, 1990
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Takuji Tsuji, Tomohiro Yanagida
  • Patent number: 4946823
    Abstract: In a heat-sensitive record material having a heat-sensitive recording layer on a base sheet, a middle layer is formed between the heat-sensitive recording layer and the base sheet by blade-coating on the base sheet a coating composition which mainly comprises at least one pigment having an oil absorption of at least 80 cc/100 g measured by JIS K 5101 and a binder and in which the binder ratio is 5% to 16% by weight of the total solid and the solid amount is 35 to 55% by weight of the coating composition.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: August 7, 1990
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Mikio Nakamura, Yukio Takayama
  • Patent number: 4943554
    Abstract: A carbonless copy system which enables the formation of a plurality of different colored images on a substrate. A phenolic resin or reactive clay image-forming component is applied as a CF coating on a recording substrate. One or more coatings of encapsulated dye precursors (complementary image-forming components) are applied to selected portions of the CF coating on the recording substrate and one or more coatings of encapsulated dye precursors are applied to selected portions of a transfer substrate. The dye precursor coatings are capable of forming different colored reaction products when coming into contact and reacting with the phenolic resin or reactive clay. Upon applying pressure to the transfer substrate, the dye precursor capsules are ruptured, releasing the dye precursor which contacts and reacts with the phenolic resin or reactive clay to form the colored reaction products.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: July 24, 1990
    Assignee: Moore Business Forms, Inc.
    Inventor: Norman Macaulay