Identified Electron Acceptor (developer) Patents (Class 503/225)
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Patent number: 5214021Abstract: The present invention is connected with a pressure sensitive copy material using a color former solution in which an electron accepting developer and an electron donating color former capable of developing a color when brought into contact with the developer are dissolved in a solvent, and as the solvent in the color former solution, a solvent composition is used which comprises (a) 5 to 50% by volume of one selected from the group consisting of a hydrogenated lower polymer of propylene and/or a butene, an alicyclic hydrocarbon, an alkylbenzene and a kerosine fraction, and (b) 50 to 95% by volume of a bicyclic aromatic hydrocarbon and/or a chlorinated paraffin oil having a viscosity of 3 cSt or more at 40.degree. C., the aforesaid developer comprising an aromatic carboxylic acid, a polymer thereof, a metallic salt thereof, a polyvalent metallized carboxy-modified terpene phenolic resin or a derivative thereof.Type: GrantFiled: April 5, 1990Date of Patent: May 25, 1993Assignee: Nippon Petrochemicals Co., Ltd.Inventors: Naoya Takahashi, Satoshi Narui, Yasuo Togami, Ryoichi Miura
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Patent number: 5212145Abstract: A heat sensitive recording material having a recording layer formed on a substrate and containing a colorless or light-colored basic dye and a color acceptor, the heat sensitive recording material being characterized in that at least one ethyleneimine derivative of the following formula (1) is contained in the recording layer as a preservability improving agent for record images ##STR1## wherein R.sub.1 is direct bond, --O--, --S--, --SO.sub.2 -- or C.sub.1 .about.C.sub.6 alkylene, R.sub.2 and R.sub.3 are each C.sub.1 .about.C.sub.4 alkyl, C.sub.1 .about.C.sub.4 alkoxyl or halogen atom, m and n are each zero or an integer of 1 to 4.Type: GrantFiled: July 23, 1992Date of Patent: May 18, 1993Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Tetsuo Tsuchida, Yasuji Koga, Haruo Omura, Yoshihiro Shimizu, Shuji Yoda
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Patent number: 5210065Abstract: A color-forming recording material containing:(a) an aromatic diamine,(b) an oxidizing agent such as a quinoid type electron-accepting compound, and(c) an acidic substance such as an aromatic carboxylic acid.Type: GrantFiled: October 2, 1991Date of Patent: May 11, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Michio Tanaka, Koji Kawai, Hiroyoshi Tarumoto, Hisaya Miki, Keiki Kishikawa, Masato Kawamura, Masatoshi Nitabaru, Terunori Fujita
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Patent number: 5208208Abstract: There is disclosed a heat-sensitive recording material comprising a support and a heat-sensitive recording layer formed on said support; said heat-sensitive recording layer containing an aromatic isocyanate compound and an imino compound as color developing agent and a silane-modified acrylic resin constituting at least a part of binder.Type: GrantFiled: July 22, 1991Date of Patent: May 4, 1993Assignee: Mitsubishi Paper Mills LimitedInventors: Makoto Motoda, Hideaki Senoo
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Patent number: 5204311Abstract: This invention relates to improved imaging systems based on the formation of yellow colored coordination compounds of transition metals with certain ligands. The formation of colored coordination compounds can be employed to generate images and is important in the manufacture and use of pressure sensitive transfer papers for preparing carbonless copies. In particular, this invention relates to certain ethanediimidic acid bis[(arylalkylidene)hydrazide] compounds, and particularly to certain ethanediimidic acid bis[(o-hydroxyarylalkylidene)hydrazide] compounds, to their coordination compounds with certain transition metals, and to their use in pressure sensitive carbonless copy paper systems. These compounds have been found to provide excellent yellow colors when used in pressure sensitive carbonless copy-papers wherein the image is formed by the reaction of a color-forming compound with transition metal salts such as those of nickel, cobalt, iron, copper, and similar materials.Type: GrantFiled: August 23, 1991Date of Patent: April 20, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventor: Nusrallah Jubran
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Patent number: 5202304Abstract: A recording medium which comprises a support having thereon a layer containing an electron-donating achromatic dye incorporated in microcapsules and an electron-accepting compound, wherein said electron-accepting compound is a 3-halo-4-hydroxybenzoic acid ester having a polymerizable ethylene group. The recording medium provides a high color density at image part, a low fog density at non-image part and markedly high stability of the non-image part.Type: GrantFiled: June 13, 1991Date of Patent: April 13, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Ken Iwakura, Yuuichi Fukushige, Shintaro Washizu
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Patent number: 5200385Abstract: A thermosensitive recording material comprising a leuco dye, a color developer and a water-soluble lubricant such as an alkylphosphate compound having formula (I) or (II): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each independently are an alkyl group, an alkynyl group or a monovalent metallic element, but they cannot be the metallic element at the same time; or ##STR2## wherein R.sub.4 is an alkyl group or an alkynyl group, and R.sub.5 is a monovalent metallic element.Type: GrantFiled: December 12, 1989Date of Patent: April 6, 1993Assignee: Ricoh Company, Ltd.Inventors: Hiroaki Inoue, Norihiko Inaba, Hiroaki Okuda, Koji Yamamoto
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Patent number: 5187143Abstract: The present invention provides a heat sensitive recording material having a recoridng layer formed on a substrate and containing a colorless or light-colored basic dye and a color developer, the heat sensitive recording material being characterized in that the color developer includes a zinc salt of terephthalaldehydic acid or a composite zinc salt of terephthalaldehydic acid and other aromatic carboxylic acid.Type: GrantFiled: October 25, 1991Date of Patent: February 16, 1993Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Kazuo Watanabe, Tosaku Okamoto
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Patent number: 5178669Abstract: A composition for reversible thermal recording media which contains an amphoteric compound having at least one of a phenolic hydroxyl group and a carboxyl group and also having an amino group either as a functional group or as part of a salt compound, and a leuco compound.Type: GrantFiled: January 31, 1991Date of Patent: January 12, 1993Assignee: Toppan Printing Co., Ltd.Inventors: Niro Watanabe, Toyoko Shimizu, Yoshihiro Hino
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Patent number: 5179067Abstract: The present invention relates to a color forming solution including the benzoin derivatives as a sensitizer.Type: GrantFiled: May 23, 1991Date of Patent: January 12, 1993Assignee: Chonju Paper Mfg. Co., Ltd.Inventors: Suk K. Chang, Dong J. Yang, Kyu C. Paik, Don W. Kim, Jae S. Ryu
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Patent number: 5179066Abstract: This invention relates to a thermosensitive recording material containing at least one of durene derivative represented by the formula (I): ##STR1## wherein Z represents CH.sub.2 OX or H, X represents an alkyl group, a cycloalkyl group, a substituted or unsubstituted aralkyl group or aryl group, or --COR group where R represents an alkyl group or a substituted or unsubstituted aryl group,in a recording layer which contains a leuco dye and a color-developing agent which reacts with said dye so as to form a color by heating, and the thermosensitive recording material having high color sensitivity can be obtained.Type: GrantFiled: April 8, 1992Date of Patent: January 12, 1993Assignees: Yamada Chemical Co., Ltd., Nagase Chemicals Ltd.Inventors: Manabu Yamada, Toshiro Narizuka, Katsuhiko Tsunemitsu, Hajime Kawai, Takayuki Kurosaki
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Patent number: 5179065Abstract: Disclosed herein is a display composition which comprises a dye and a clay mineral in which quaternary ammonium ions are bound between layers through ion exchange, said display composition undergoing reversible color development and color fading through the oxidation and reduction of said dye, the oxidation causing said dye to form a color and to be bound between the layers of said clay mineral through ion exchange with said quaternary ammonium ions, the reduction causing the dye to discolor and to be desorbed out of the interlaminar space of the clay mineral and also causing the quaternary ammonium ions to be bound again between the layers through ion exchange. Disclosed also herein are a coloring pigment and recording material which employ the display composition.Type: GrantFiled: June 2, 1992Date of Patent: January 12, 1993Assignee: Sony CorporationInventor: Kengo Ito
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Patent number: 5177051Abstract: An extracted and isolated soy protein polymer is used for prevention of premature coloration in CFB pressure-sensitive copying paper which is neutral- or alkaline-sized with an alkyl ketene dimer and which utilizes an acid clay color developer composition. The soy protein polymer may be carried by the base paper, e.g. as a result of size press or size bath application, or may be present in the microcapsule coating.Type: GrantFiled: December 9, 1991Date of Patent: January 5, 1993Assignee: The Wiggins Teape Group LimitedInventors: Michael E. Hobson, Susan C. Tilbury
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Patent number: 5175138Abstract: A heat-sensitive recording material which comprises a color-forming layer containing a coupling substance which is usually colorless or light-colored and a developer which gives rise to color in the coupling substance upon heating, wherein the color-forming layer contains an organic phosphate, its metal salt or its basic salt of the following general formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sub.2 and R.sub.3 each represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms, M represents a hydrogen atom or a metal atom having a valence of 1 to 4, L represents 0 or 1, m, represents a number of 0 to 1, n represents 1 or 2, and m+n represents the valence of the metal M.Type: GrantFiled: June 17, 1991Date of Patent: December 29, 1992Assignee: Asahi Denka Kogyo Kabushiki KaishaInventors: Mitsuo Akutsu, Keiji Tabata
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Patent number: 5173477Abstract: Novel heat-sensitive recording media include a support substrate, e.g., paper or a synthetic polymer film, having a thermosensitive recording layer deposited thereon, such thermosensitive recording layer comprising a colorant precursor, a heat-sensitive developer therefor and at least one polyphenylmethane of the formula (A1): ##STR1## in which R.sub.1 and R.sub.2, which may be identical or different, are each a halogen atom, NO.sub.2, CN, OCH.sub.3, H or an alkyl radical having up to 5 carbon atoms; n is 3, 4 or 5; p is 1, 2 or 3; g is 0 or 1 and the maximum value of p+g is 2; and the melting point of which polyphenylmethane being at least 50.degree. C.Type: GrantFiled: December 19, 1991Date of Patent: December 22, 1992Assignee: Societe AtochemInventors: Raymond Commandeur, Jean-Pierre Sarron
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Patent number: 5173472Abstract: The present invention provides a heat sensitive recording material comprising a substrate and a heat sensitive recording layer formed thereon and having incorporated therein a colorless or light-colored basic dye and a color acceptor reactive with the dye when contacted therewith by heating, the heat sensitive recording material being characterized in that the heat sensitive recording layer has incorporated therein a polyvinyl alcohol having an average polymerization degree of at least 1000 and a saponification degree of up to 90 mole %, and a modified starch.Type: GrantFiled: July 12, 1991Date of Patent: December 22, 1992Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Hisayoshi Mito, Masato Kawamura, Mikio Nakamura
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Patent number: 5169826Abstract: A CF ink and process which can be applied to a support sheet by standard transfer-litho press is provided. The nonvolatile printing ink which is capable of color development may be used to produce a CF carbonless copy sheet, or, in combination with a high solids, aqueous-based CB ink, to produce a CFB carbonless copy sheet. The ink includes from about 25 to 35% of a non-volatile oil, 25 to 35% of an acidic color developer, 20 to 50% filler, and 4 to 15% dispersed wax particles, all percentages by weight.Type: GrantFiled: October 26, 1990Date of Patent: December 8, 1992Assignee: The Standard Register CompanyInventors: Michael E. Seitz, Frank V. Parenti
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Patent number: 5164356Abstract: Thermally-responsive record materials are described containing a "complex" material formed from interactions at high pH between zinc stearate and ammonia and/or zinc stearate, ammonia and zinc oxide. The use of these materials in thermally-responsive sheets improves thermal image response and/or improves resistance to thermal image decline upon exposure to elevated temperature.Type: GrantFiled: November 12, 1991Date of Patent: November 17, 1992Assignee: Appleton Papers Inc.Inventor: Dean G. Dalebroux
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Patent number: 5158926Abstract: A reversible thermosensitive recording material is composed of a support and a reversible thermosensitive recording layer formed on the support. The reversible thermosensitive recording layer includes a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin, and has a temperature-dependent transparency. The matrix resin includes a resin component having a glass transition temperature of 90.degree. C. or more.Type: GrantFiled: August 30, 1991Date of Patent: October 27, 1992Assignee: Ricoh Company, Ltd.Inventors: Yoshihiko Hotta, Makoto Kawaguchi, Kunichika Morohoshi, Yukio Konagaya, Toru Nogiwa, Akira Suzuki, Fumihito Masubuchi
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Patent number: 5158924Abstract: A reversible thermosensitive recording material is composed of a support and a reversible thermosensitive recording layer formed thereon, which is capable of recording and erasing images repeatedly by utilizing its property that the transparency can be changed reversibly from a transparent state to an opaque state, and vice versa, depending upon the temperature thereof. The reversible thermosensitive recording layer is composed of a reversible thermosensitive layer and a protective layer formed thereon and has a scratching intensity of 10 g or more and a coefficient of friction of 0.10 or less. Images are reversibly formed and erased on this reversible thermosensitive recording material.Type: GrantFiled: September 13, 1991Date of Patent: October 27, 1992Assignee: Ricoh Company, Ltd.Inventors: Yukio Konagaya, Yoshihiko Hotta, Makoto Kawaguchi, Toru Nogiwa, Kunichika Morohoshi, Akira Suzuki, Fumihito Masubuchi, Takao Igawa
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Patent number: 5158925Abstract: A thermosensitive recording material comprising a substrate and a thermosensitive coloring layer, formed thereon, which comprises a leuco dye; at least one color developer selected from the group consisting of 1,5-bis(4-hydroxyphenylthio)-3-oxapentane and 1,7-bis(4-hydroxyphenylthio)-3,5-dioxapentane; and an isocyanuric acid derivative of the formula (I): ##STR1## wherein R.sup.1, R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen or an alkyl group having 1 to 4 carbon atoms, provided that at least either R.sup.1 or R.sup.3 represents an alkyl group having 1 to 4 carbon atoms; and R.sup.2 represents --C.sub.n H.sub.2n OH in which n is an integer of 0 to 4.Type: GrantFiled: October 9, 1990Date of Patent: October 27, 1992Assignee: Ricoh Company, Ltd.Inventor: Tomohisa Kakuda
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Patent number: 5141557Abstract: A color developer composition exhibiting excellent color developability, resistance to yellowing and light-fastness is disclosed, which comprises a substituted or unsubstituted benzoic acid salt represented by formula (I), or a mixture of a substituted or unsubstituted benzoic acid salt represented by formula (II) and a novolak type phenol resin represented by formula (III): ##STR1## wherein R.sub.1 to R.sub.19, M, M', n, n' and M are defined in the specification.Type: GrantFiled: July 17, 1990Date of Patent: August 25, 1992Assignee: Brother Kogyo Kabushiki KaishaInventor: Shunichi Higashiyama
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Patent number: 5134113Abstract: Thermoreactive recording material contains, as developer, a mixture of an acidic-modified polymer of (meth)acrylonitrile and/or methacrylonitrile and a diphenol of the formula ##STR1## in which Y is, for example, a single bond, an alkylene or alkylidene radical, gives, on thermal printing, a dye which has a reduced tendency to sublime.Type: GrantFiled: June 29, 1990Date of Patent: July 28, 1992Assignee: Bayer AktiengesellschaftInventors: Gunter Klug, Hubertus Psaar, Siegfried Korte
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Patent number: 5124307Abstract: A novel thermally-responsive record material is disclosed comprising a support having provided thereon in substantially contiguous relationship an electron donating dye precursor and a fluorene bisphenol of the formula ##STR1## wherein each R is independently selected from hydrogen and C.sub.1 to C.sub.8 alkyl,and a suitable binder therefor.The record material according to the invention when imaged resists fade when contacted with certain environmental challenges including oils, solvents, and elevated temperatures, all of which can be encountered in the environments of use of these record materials.Type: GrantFiled: August 15, 1991Date of Patent: June 23, 1992Assignee: Appleton Papers Inc.Inventors: Dean G. Dalebroux, Kenneth D. Glanz
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Patent number: 5118443Abstract: A developer comprising at least one polyvalent metal salt of a nuclear substituted salicylic acid of the following general formula is provided. ##STR1## In the formula, R.sub.1 represents an alkyl group having from 1 to 12 carbon atoms, R.sub.2 represents a hydrogen atom or an alkyl group having from 1 to 12 carbon atoms, R.sub.3 represents a hydrogen atom or a methyl group provided that at least one of R.sub.1 and R.sub.2 is a secondary butyl group, a secondary hexyl group, an isohexyl group, a secondary octyl group, an isononyl group, a secondary decyl group, a secondary dodecyl group or an isododecyl group and the total number of the carbon atoms in R.sub.1, R.sub.2 and R.sub.3 is from 9 to 18, M is a polyvalent metal atom, and m is a valence of M. An aqueous dispersion containing the developer and a method for preparing the developer are also described.Type: GrantFiled: January 22, 1991Date of Patent: June 2, 1992Assignees: Sanko Kaihatsu Kagaku Kenkyusho, Kanzaki Paper Manufacturing Co., Ltd.Inventors: Toranosuke Saito, Takashi Ishibashi, Tomoharu Shiozaki, Tetsuo Shiraishi
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Patent number: 5116803Abstract: The present invention provides the following 3 types of reversible thermosensitive recording materials:1. A reversible thermosensitive recording material having a thermosensitive layer whose transparency reversibly changes depending on its temperature, said layer comprising a resin matrix and an organic low molecular substance dispersed in said resin matrix;2. A reversible thermosensitive recording material having a thermosensitive layer that is consisted essentially of a resin matrix and an organic low molecular substance dispersed in this resin matrix and is arranged to change its transparency reversibly depending upon temperatures, wherein said thermosensitive layer further contains at least one additive; and3.Type: GrantFiled: October 10, 1990Date of Patent: May 26, 1992Assignee: Ricoh Company, Ltd.Inventors: Yoshihiko Hotta, Keishi Kubo
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Patent number: 5114903Abstract: A novel thermally-responsive record material is disclosed comprising a support having provided thereon in substantially contiguous relationship an electron donating dye precursor and a succinimide of the formula ##STR1## wherein n is an integer from 1 to 3 wherein each R is independently selected from hydrogen and C.sub.1 to C.sub.8 alkyl,and a suitable binder therefor.The record material according to the invention when imaged resists fade when contacted with certain environmental challenges including oils, solvents, and elevated temperatures, all of which can be encountered in the environments of use of these record materials.Type: GrantFiled: November 8, 1991Date of Patent: May 19, 1992Assignee: Appleton Papers Inc.Inventor: Dean G. Dalebroux
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Patent number: 5112798Abstract: The present invention relates to a heat-sensitive recording sheet which comprises a support, an undercoat layer provided on said support and a heat-sensitive color forming layer provided on said undercoat layer, said heat-sensitive color fomring layer containing a colorless or palely colored dye precursor, a developer which reacts with said dye precursor upon application of heat to cause said dye precursor to form color, N-methylolbehenic acid amide, and at least one sensitivity enhancing agent. This heat-sensitive recording sheet is excellent in heat responsiveness, high in sensitivity and superior in mechanical matching properties.Type: GrantFiled: August 24, 1990Date of Patent: May 12, 1992Assignee: Mitsubishi Paper Mills LimitedInventor: Masahiro Miyauchi
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Patent number: 5110740Abstract: A method for treating a suspension of a phenolic resin containing residual phenols comprising the step of adding a peroxidase enzyme and a peroxide material or an oxidase enzyme and an oxygen material to said suspension to polymerize said residual phenolic monomer, and the purified suspension produced thereby is disclosed. The inventive method is used to pretreat a suspension containing a phenolic material so that the suspension may be subsequently used in a commercial process, such as the production of paper.Type: GrantFiled: September 6, 1989Date of Patent: May 5, 1992Assignee: The Mead CorporationInventors: Alexander R. Pokora, John J. Stolfo
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Patent number: 5108980Abstract: A reversible thermosensitive recording material is disclosed, which comprises (a) a support, (b) a reversible thermosensitive recording layer formed thereon which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin, and has a temperature-dependent transparency, and (c) an overcoat layer comprising as the main component a resin or an ultraviolet-light-setting resin, formed on the reversible thermosensitive recording layer.Type: GrantFiled: December 14, 1990Date of Patent: April 28, 1992Assignee: Ricoh Company Ltd.Inventors: Yoshihiko Hotta, Keishi Kubo
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Patent number: 5106814Abstract: The present invention provides a heat-sensitive recording material excellent in image stability and heat-responsiveness which contains an aromatic isocyanate compound, an imino compound and at least one compound represented by the following formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents an alkyl group.Type: GrantFiled: December 28, 1990Date of Patent: April 21, 1992Assignee: Mitsubishi Paper Mills LimitedInventors: Shigetoshi Hiraishi, Akinori Okada, Mikiya Sekine
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Patent number: 5102858Abstract: In a process of producing high purity bis(4-hydroxyphenyl) sulfides which comprises reacting phenols with sulfur dichloride in organic solvents, the improvement comprising: reacting the phenols with sulfur dichloride in nonpolar organic solvents; removing partly or wholly the nonpolar organic solvents after the reaction; adding polar organic solvents to the reaction mixture to dissolve the reaction mixture therein at elevated temperatures; and crystallizing out the high purity bis(4-hydroxyphenyl)sulfides.There is further provided a high performance heat-sensitive recording material which comprises high purity bis(4-hydroxy-3-methylphenyl)sulfide thus prepared and having a melting point in the range of from 123.9.degree. C. to 124.9.degree. C. as a developer and a fluoran compound as a color former.Type: GrantFiled: June 12, 1989Date of Patent: April 7, 1992Assignee: Seitetsu Kagaku Co., Ltd.Inventors: Akira Onoe, Masao Kawamura, Kunioki Kato, Tomiharu Amitani, Makoto Sato, Tsuyoshi Morishita
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Patent number: 5102856Abstract: A high solids contents, aqueous-based, self-contained printing ink is provided including, a non-volatile diluent, an acidic color developer, a binder, and a water soluble surfactant which is compatible with the binder in the ink, but which is incompatible with the binder when the ink has dried. The high solids, self-contained printing ink further includes microcapsules containing a dyestuff precursor that is capable of reacting with the acidic color developer to form a color. The ink may be used to prepare self-contained carbonless copy sheets.Type: GrantFiled: November 7, 1990Date of Patent: April 7, 1992Assignee: The Standard Register CompanyInventors: Gary W. Doll, Michael E. Seitz
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Patent number: 5102857Abstract: A heat-sensitive recording material which comprises a support and a heat-sensitive recording layer provided on the support, the heat-sensitive recording layer comprising a colorless or pale-colored dye precursor, a developer which reacts with the dye precursor to form color upon heating, and two compounds represented by the following formulas (I) and (II): ##STR1## The heat-sensitive recording material causes little fogging and generates little thermal head scum while having almost the same sensitivity and image stability as conventional heat-sensitive recording materials.Type: GrantFiled: January 4, 1991Date of Patent: April 7, 1992Assignee: Mitsubishi Paper Mills LimitedInventor: Akinori Okada
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Patent number: 5098881Abstract: The present invention provides a heat sensitive recording material which comprises an aromatic isocyanate compound, an imino compound which reacts with said aromatic isocyanate compound upon application of heat to form a color and a metallic soap which is pulverized together with said imino compound. Preferably the metallic soap has an average particle diameter of 0.5-2.0 .mu.m. This heat sensitive material is excellent in sensitivity and can form an image or excellent stability.Type: GrantFiled: June 13, 1991Date of Patent: March 24, 1992Assignee: Mitsubishi Paper Mills Ltd.Inventors: Shigtetoshi Hiraishi, Susumu Yamanobe
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Patent number: 5096872Abstract: The present invention provides a recording material utilizing the color forming reaction between a colorless or light-colored basic dye and a color acceptor reactive with the dye to form a color and forming on the same or different substrate layer or layers containing the basic dye and the color acceptor conjointly or separately, the recording material being characterized in that the color acceptor is at least one of salicylic acid derivatives represented by the following formula [I] or polyvalent metal salts thereof ##STR1## wherein X is straight-chain or branched-chain C.sub.1.about.12 alkylene or C.sub.5.about.12 cycloalkylene, R is C.sub.1.about.20 alkyl having or not having a substituent or C.sub.2.about.20 alkenyl having or not having a substituent, Y is C.sub.1.about.6 alkyl, C.sub.2.about.6 alkenyl, C.sub.7.about.10 aralkyl or halogen atom, Z is C.sub.1.about.6 alkyl, C.sub.2.about.6 alkenyl, C.sub.7.about.10 aralkyl, C.sub.1.about.Type: GrantFiled: October 24, 1990Date of Patent: March 17, 1992Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Tetsuo Tsuchida, Fumio Seyama, Tatsuya Meguro, Mitsuru Kondo
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Patent number: 5096873Abstract: A thermosensitive recording sheet comprising a support and a thermosensitive color developer layer thereon containing a basic leuco dye and an organic color developer, said layer containing a bis-phenyl sulfone compound selected from bis-(3-phenyl-4-hydroxyphenyl)sulfone and bis-(2-methyl-4-hydroxy-5-cyclohexylphenyl)sulfone as the organic color developer.Type: GrantFiled: April 4, 1990Date of Patent: March 17, 1992Assignees: Jujo Paper Co., Ltd., Yoshitomi Pharmaceutical Industries, Ltd.Inventors: Toshiaki Minami, Tadakazu Fukuchi, Toshio Kaneko, Fumio Fujimura, Kazuto Tsukinuki, Kazumi Saeki, Akira Shimada
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Patent number: 5094999Abstract: A recording material utilizing the reaction between a colorless or light-colored basic dye and a color acceptor reactive with the basic dye to form a color and forming on the same or different substrate a layer or layers containing the basic dye of the color acceptor conjointly or separately, the recording material being characterized in that the color acceptor is at least one of salicyclic acid derivatives represented by the following formula [I] or polyvalent metal salts thereof ##STR1## wherein Ar, R, X, l and m are defined in the specification.Type: GrantFiled: May 29, 1990Date of Patent: March 10, 1992Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Testsuo Tsuchida, Fumio Seyama, Tatsuya Meguro, Mitsuru Kondo
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Patent number: 5091280Abstract: A light- and heat-sensitive recording material comprising a support having thereon at least one light- and heat-sensitive layer comprising, (1) microcapsules containing an electron donative colorless dye, and (2) a light-hardenable composition containing (a) a polymerizable vinyl monomer, (b) a photopolymerization initiator, and (c) an electron acceptive developer and a light- and heat-sensitive recording material comprising a support having thereon at least one light- and heat-sensitive layer comprising, (1) microcapsules containing an electron donative colorless dye, and (2) a light-hardenable composition containing (d) an electron acceptive polymerizable vinyl monomer and (b) a photopolymerization initiator.Type: GrantFiled: August 13, 1990Date of Patent: February 25, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Jun Yamaguchi, Shintaro Washizu, Hirotaka Matsumoto, Ken Iwakura, Yuuichi Fukushige
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Patent number: 5084434Abstract: Disclosed is a system for developing latent images on alkali-based or acid based paper stock which has been marked with a water-soluble oxidizing agent to form a concealed image. In the system, a marking composition is applied to said paper stock which comprises(a) A water-soluble iodide,(b) Acetic acid,(c) A water-soluble reducing agent, and(d) Water.Preferably, the reducing agent is ascorbic acid and preferably the marking composition also comprises a water-soluble dye.Type: GrantFiled: February 5, 1991Date of Patent: January 28, 1992Assignee: A.B. Dick CompanyInventor: Michael Kulisz
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Patent number: 5084593Abstract: Leuco dyes of the formula (I) are disclosed, ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent an alkyl group having 1 to 10 carbon atoms; X represents hydrogen, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms or a halogen; and Y represents R.sub.5 --Z--SO.sub.2 NH--, R.sub.6 --Z--CONH--, or ##STR2## in which Z represents ##STR3## R.sub.5 and R.sub.6 each represent hydrogen, an alkyl group having 1 to 10 carbon atoms, or a halogen; and R.sub.7 and R.sub.8 each represent hydrogen, a cyano group, or --COR.sub.9, in which R.sub.9 represents a lower alkyl group, a lower alkoxyl group, a phenyl group which may be substituted by an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms, or a halogen; a naphthyl group which may be substituted by an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms or a halogen with the proviso that R.sub.7 and R.sub.8 are not both hydrogen.Type: GrantFiled: December 14, 1990Date of Patent: January 28, 1992Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Gotoh, Shigeru Kusakata, Isao Shiojima
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Patent number: 5084432Abstract: 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: GrantFiled: July 3, 1990Date of Patent: January 28, 1992Assignee: Brother Kogyo Kabushiki KaishaInventor: Shunichi Higashiyama
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Patent number: 5084431Abstract: Pressure-sensitive copying paper of particular suitability for the production of business forms sets by xerographic photocopying processes (including laser printing processes) carries, as loadings within the thickness of the paper:(a) inorganic color developer material; and(b) microcapsules containing a substantially colorless chromogenic material;and is characterized in that it has:(i) a mean Bendsten roughness on its top side up to 880 ml.min.sup.-1 ;(ii) a mean Bendsten porosity of up to about 200 ml.min.sup.-1 ; and(iii) an ex-mill moisture content of not more than about 5.5%, based on the total weight of the paper.The use of paper as defined above minimises jamming and other problems commonly encountered when attempting to produce business forms sets from pressure-sensitive copying papers by xerographic photocopying processes.Type: GrantFiled: June 30, 1989Date of Patent: January 28, 1992Assignee: The Wiggins Teape Group LimitedInventors: Constantinos Pilikos, Antony P. Way, Bruno Grimaldi, Jacques A. Broyard
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Patent number: 5081098Abstract: A heat-sensitive recording material that utilizes the color forming reaction between at least one basic dye and a developer that is capable of forming a color upon contact with said basic dye is characterized in that the heat-sensitive recording layer of said material contains both dihydroxydiphenyl ether represented by the formula (I): ##STR1## and a compound represented by the general formula (II): ##STR2## (where R is H or C.sub.n H.sub.2n+1, with n being an integer of 1-5). This heat-sensitive recording material has a sufficiently high sensitivity for color formation to kake it suitable for use in a broad range of practical applications and it also exhibits enhanced keeping quality and whiteness.Type: GrantFiled: May 17, 1990Date of Patent: January 14, 1992Assignee: Oji Paper Co., Ltd.Inventor: Satoshi Fukui
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Patent number: 5081099Abstract: A heat-sensitive recording material wherein a color-forming layer comprising a coupling substance which is usually colorless or light-colored and a developer which gives rise to color in the coupling substance upon heating further contains, as a sensitizer, a tetrahydronaphthalene compound of the following general formula (I): ##STR1## wherein X represents an alkylene group, --O--CO--O--, --O--CO-- or --O--R'.sub.n Y--, n represents 1 or 2, Y represents --O-- or --S--, R' represents an alkylene group, and R represents a phenyl, alkylphenyl or tetrahydronaphthyl group.Type: GrantFiled: July 19, 1990Date of Patent: January 14, 1992Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Mitsuo Akutsu, Syuji Iwakura, Keiji Oya
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Patent number: 5075278Abstract: A pressure-sensitive chromogenic copy system comprising a transfer sheet having on at least a portion of at least one surface thereof a color developer capable of reacting with a chromogen to form a color image, said color developer comprising a crude reaction medium resulting from reactants used to prepare a salicylate and also containing therein at least one metal compound of such salicylate, the resultant transfer sheet, color developer and process for making such color developer.Type: GrantFiled: March 4, 1991Date of Patent: December 24, 1991Inventor: Anthony E. Vassiliades
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Patent number: 5071821Abstract: Thermally sensitive record material (thermal paper) using 2,2-bis(4-hydroxyphenyl)-4-methylpentane as co-reactant with conventional electron donating chromogenic compounds and a combination of a long chain fatty acid amide was melting between 80.degree. and 140.degree. C. and a sensitizer melting between 60.degree. and 120.degree. C. and selected from diaryl ethers, acetoacetic anilides, phenyl hydroxynaphthoates, aryl or aralkyl substituted biphenyls and diaryl carbonates have high thermal sensitivity and good background whiteness.Type: GrantFiled: January 19, 1990Date of Patent: December 10, 1991Assignee: The Wiggins Teape Group LimitedInventors: Vivienne J. Smith, Debra J. Clark, Keith B. Damarell
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Patent number: 5071822Abstract: Disclosed is a recording material employing an electron donating colorless dye and an electron accepting compound, an improvement being present in that said electron accepting compound is a compound represented by the formula: ##STR1## wherein Ar represents a phenyl group, a substituted phenyl group, a benzyl group, a substituted benzyl group, a naphthyl group or a substituted naphthyl group.Type: GrantFiled: September 19, 1990Date of Patent: December 10, 1991Assignee: Kao CorporationInventors: Koichi Nakamura, Tadashi Nakamura, Hideki Yanagi, Harumasa Yamasaki
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Patent number: 5070067Abstract: A heat-sensitive recording material comprising a support and a recording layer provided on the support, said recording layer containing a colorless or pale-colored basic dye and a color developer capable of forming a color upon application of heat, wherein a hectorite clay is incorporated in at least one of layers constituting the recording material.Type: GrantFiled: August 18, 1989Date of Patent: December 3, 1991Assignee: Kanzaki Paper Mfg. Co., Ltd.Inventors: Hisashi Tani, Hisanori Yagi
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Patent number: RE33815Abstract: A heat sensitive record sheet which comprises a coated layer comprising 2-anilino-3-methyl-6-dibutylaminofluoran.Type: GrantFiled: June 27, 1988Date of Patent: February 4, 1992Assignee: Hodogaya Chemical Co., Ltd.Inventors: Masahiko Yamaguchi, Michihiro Gonda, Yutaka Satoh, Mikiko Kanasugi