Identified Solvent Or Dispersant For Color-former, Other Than Mere Mineral Oil Patents (Class 503/213)
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Patent number: 9302830Abstract: A container or part of a container may comprise fragrance encapsulated in microcapsules configured to release fragrance emitting substance at at least one predetermined period of time.Type: GrantFiled: April 12, 2013Date of Patent: April 5, 2016Assignee: Crown Packaging Technology, Inc.Inventors: Christopher Paul Ramsey, Peter Alan Young, Daniel A. Abramowicz
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Publication number: 20150119237Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.Type: ApplicationFiled: May 13, 2014Publication date: April 30, 2015Applicant: ZINK IMAGING, INC.Inventors: Michael P. FILOSA, Stephen J. TELFER, John L. Marshall, Richard M. Allen, John M. Hardin
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Patent number: 8722574Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.Type: GrantFiled: April 27, 2012Date of Patent: May 13, 2014Assignee: Zink Imaging, Inc.Inventors: Michael P Filosa, Stephen J. Telfer, John L Marshall, Richard M Allen, John M Hardin
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Patent number: 8709973Abstract: Disclosed herein are irreversible thermochromic ink compositions including a volatile color activator and a color change dye capable of becoming substantially colorless upon evaporation of the volatile color activator. The volatile color activator and the color change dye can be, optionally, encapsulated. Written marks made with the thermochromic ink compositions can be subjected to a force directing component, which can include generating heat and/or friction, to evaporate the volatile color activator, thereby causing the color change dye to become substantially colorless.Type: GrantFiled: December 31, 2011Date of Patent: April 29, 2014Assignee: Sanford, L.P.Inventor: Wing Sum Vincent Kwan
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Patent number: 8652996Abstract: Disclosed herein are irreversible thermochromic ink compositions including a solvent and a sublimable dye dissolved in the solvent. The solvent and the sublimable dye can be, optionally, encapsulated. Written marks made with the thermochromic ink compositions can be subjected to a force directing component and/or a heat source, to promote sublimation of the sublimable dye, thereby causing the written mark to change color or become substantially colorless.Type: GrantFiled: December 31, 2011Date of Patent: February 18, 2014Assignee: Sanford, L.P.Inventor: Wing Sum Vincent Kwan
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Patent number: 8642504Abstract: The present invention provides a composition, which comprises an aqueous solvent and forms a transparent colorless coating, which yields markings of high contrast on exposure to energy. It also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.Type: GrantFiled: July 17, 2006Date of Patent: February 4, 2014Assignee: Gill Jennings & Every LLPInventors: Jonathan Campbell, William Walker, Alan Platt, John Whitworth, Karen O'Donoghue, Ann Hunt, Howard Roger Dungworth, John Mark Plonka
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Publication number: 20130210622Abstract: The present invention relates to a thermochromic color-memory composition containing: (I) an electron donating coloring organic compound, (II) an electron accepting compound, and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reaction of the components (I) and (II): (in the formula, X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20).Type: ApplicationFiled: October 7, 2011Publication date: August 15, 2013Applicant: THE PILOT INK CO., LTD.Inventor: Yoshiaki Ono
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Patent number: 8277696Abstract: The present invention relates to a thermochromic color-memory composition comprising a solubilized mixture of (I) an electron donating coloring organic compound, (II) an electron accepting compound and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (I) and (II): wherein R represents an alkyl group having 1 to 21 carbon atoms or an alkenyl group having 1 to 21 carbon atoms, and n represents an integer of from 1 to 3.Type: GrantFiled: May 12, 2010Date of Patent: October 2, 2012Assignee: The Pilot Ink Co., Ltd.Inventor: Yoshiaki Ono
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Publication number: 20110092364Abstract: Exemplary embodiments provide compositions and methods for making and using an erasable medium that can contain oligomeric photochromic materials such as spiropyran oligomers, wherein the oligomeric photochromic material can include a plurality of photochromic groups such as spiropyrans covalently connected together by one or more linkers.Type: ApplicationFiled: October 21, 2009Publication date: April 21, 2011Applicant: XEROX CORPORATIONInventors: Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Peter M. Kazmaier
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Patent number: 7829497Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.Type: GrantFiled: May 12, 2006Date of Patent: November 9, 2010Assignee: Zink Imaging, Inc.Inventors: Michael P. Filosa, Stephen J. Telfer, John L. Marshall, Richard M. Allen, John M. Hardin
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Publication number: 20080248950Abstract: An ink and developer system including an ink component including a non-synthetic oil-based carrier and a chromogenic material dispersed or dissolved in the non-synthetic oil-based carrier, and a substrate including a developer composition capable of initiating a color change in the chromogenic material.Type: ApplicationFiled: October 3, 2007Publication date: October 9, 2008Inventors: Ibrahim Katampe, Gerard Ross
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Publication number: 20080234128Abstract: To provide a heat-sensitive recording material including a substrate; a heat-sensitive color-developing layer over the substrate, the heat-sensitive color-developing layer containing a leuco dye and a developer; a first protective layer over the heat-sensitive color-developing layer, the first protective layer containing a water-soluble resin and a crosslinking agent; and a second protective layer over the first protective layer, the second protective layer containing a water-soluble resin, a crosslinking agent and a pigment, wherein the heat-sensitive color-developing layer, the first protective layer and the second protective layer are formed simultaneously by curtain coating method, and the second protective layer contains diacetone-modified polyvinyl alcohol and acrylic resin or maleic acid copolymer resin.Type: ApplicationFiled: March 18, 2008Publication date: September 25, 2008Applicant: Ricoh Company, Ltd.Inventors: Motoi ORIHARA, Norihiko Inaba
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Patent number: 6846619Abstract: There is provided a leuco dye dispersion liquid for a thermosensitive recording material wherein the leuco dye is being dispersed with an anionic surfactant and an nonionic surfactant, while average particle diameter of the leuco dye ranges from 0.10 ?m to 0.30 ?m and content of particles less than or equal to 0.07 ?m in diameter of the dye is not greater than 1.0%. The leuco dye dispersion liquid shows no fogging, and can cause a high optical density of image on thermosensitive member with excellent brightness in background area, and a high durability for storage at elevated temperature.Type: GrantFiled: March 22, 2002Date of Patent: January 25, 2005Assignee: Ricoh Company, Ltd.Inventors: Yoshikazu Kaneko, Yasutomo Mori, Kunio Hayakawa, Mitsunobu Morita, Takeshi Kajikawa, Shuuji Miyamoto, Yuuichi Kawaguchi
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Patent number: 6815138Abstract: A heat-sensitive recording material includes a support having disposed thereon a heat-sensitive recording layer and a protective layer. The heat-sensitive recording layer contains at least two components that react to develop color by imagewise heating. At least one layer contains a compound represented by the following general formula (I). In the general formula (I), R represents a hydrophobic group or a hydrophobic polymer, and n represents an integer.Type: GrantFiled: September 16, 2002Date of Patent: November 9, 2004Assignee: Fuji Photo Film Co., Ltd.Inventor: Toshiaki Aono
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Patent number: 6815679Abstract: A reversible thermal recording material permits recording having a clear contrast at a high sensitivity and erasing such images a number of times, at least 1,000 times, repetitively, and comprises a leuco dye, a reversible developer and a light-heat-converting dye, the light-heat-converting dye having a deterioration ratio of 20% or less when a laser beam having an oscillation wavelength of 830 nm is applied thereto repeatedly 1000 times at a temperature of 25° C. at an energy of 2 J/cm2 or being a phthalocyanine compound having a vanadyl group, and a method of recording an image comprises applying a laser beam to the reversible thermal recording material, wherein the colored leuco dye is achromatized with energy that is 25 to 65% of the energy of the laser beam employed for causing the leuco dye to develop a color.Type: GrantFiled: February 11, 2003Date of Patent: November 9, 2004Assignee: Mitsubishi Paper Mills LimitedInventor: Yoichiro Azuma
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Patent number: 6727203Abstract: A method capable of producing, with industrially realizable production efficiency, microcapsules whose particle diameters are small and whose particle diameter distribution is limited, specifically microcapsules for a heat-sensitive recording material, and a heat-sensitive recording material including the thus produced microcapsules. In this method, microcapsules are produced by the steps of preparing an emulsion from an oil phase that contains a material to be micro-encapsulated and a microcapsule wall material, and an aqueous phase, and micro-encapsulating the materials by using the emulsion, the emulsion preparing step being conducted by using a microreactor having channels whose equivalent diameter is no more than 1 mm, and a heat-sensitive recording material having the thus obtained microcapsules is also provided.Type: GrantFiled: February 12, 2002Date of Patent: April 27, 2004Assignee: Fuji Photo Film Co., Ltd.Inventor: Kimio Ichikawa
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Publication number: 20040043902Abstract: A heat-sensitive recording material which has a heat-sensitive recording layer formed on a surface of a substrate, the recording layer comprising a basic chromogenic dye precursor and a developer, wherein as the developer, there is used a mixture comprising 5 to 95 wt % of 2,2-dimethyl-1,3-bis(4-hydroxybenzoyloxy)propane and 95 to 5 wt % of 4,4′-hydroxydiphenyl sulfone.Type: ApplicationFiled: July 2, 2003Publication date: March 4, 2004Inventors: Shigeru Oda, Takaaki Mori
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Patent number: 6620227Abstract: A UV curable CF ink composition is provided which is formed from a UV curable ink base, an acidic color developer, and a solvent. The UV curable CF ink composition may be applied to a substrate inline on a printing press using conventional letterpress or offset techniques without discoloration or smudging of the ink.Type: GrantFiled: December 11, 2000Date of Patent: September 16, 2003Assignee: The Standard Register CompanyInventors: Gary W. Doll, Rajendra Mehta
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Patent number: 6586364Abstract: A first heat-sensitive microcapsule of the present invention comprises a shell wall and a liquid coloring composition, and has such a temperature-breaking characteristic that the shell wall is broken by heating to a temperature equal to or higher than a boiling point of the liquid coloring composition. The first heat-sensitive microcapsule is stable to light and easy to handle. A second heat-sensitive microcapsule of the present invention comprises a shell wall, a coloring composition and a heat decomposition-type gas-developing agent, and has such a temperature-breaking characteristic that the shell wall is broken by heating to a temperature equal to or higher than a decomposition temperature of the gas-developing agent. The second heat-sensitive microcapsule can be sensitively broken even by heating in a short time.Type: GrantFiled: December 7, 2000Date of Patent: July 1, 2003Assignee: Pentax CorporationInventors: Yukio Kubota, Minoru Suzuki, Kazuyuki Shimbo, Yutaka Igari
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Patent number: 6494950Abstract: Disclosed is a thermochromic microencapsulated pigment which comprises as four essential components (a) an electron-donating chromatic organic compound, (b) an electron-accepting compound, (c) a reaction medium determining the temperatures at which the color reactions of component (a) with component (b) take place, and (d) a color change temperature regulator, the color change temperature regulator (d) comprising one or more compounds selected from the group consisting of esters, alcohols, ketones, acid amides, hydrocarbons, and fatty acids and having a melting point Y (° C.) satisfying the relationship (X+30)° C.≦Y≦200° C., wherein X (° C.) is the melting point of component (c), and the four essential components being microencapsulated.Type: GrantFiled: September 18, 2000Date of Patent: December 17, 2002Assignee: The Pilot Ink Co., Ltd.Inventors: Katsuyuki Fujita, Kuniyuki Senga
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Patent number: 6348432Abstract: Disclosed are heat sensitive coatings and record materials that are environmentally resistant and therefore do not require a protective coating. One embodiment includes an environmentally resistant heat sensitive coating that includes an acrylate polymer of the formula: wherein R1 is a hydrogen or a methyl group, R2 is a hydrogen or a methyl group, and R3 is nitrile or chlorine or wherein, when c is 0, R4 is methyl, phenyl, or substituted phenyl, and when c is greater than 0, R4 is methyl, phenyl, substituted phenyl, halogen, nitrile or hydroxyl; m is greater than 1; n is greater than 1; b is greater than or equal to 0; and c is an integer from 0 to 38.Type: GrantFiled: March 10, 2000Date of Patent: February 19, 2002Assignee: Nashua CorporationInventor: Mohamed Elmasry
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Patent number: 6310002Abstract: A novel pressure sensitive record material suitable for use for high temperature reprographic equipment is disclosed comprising a sheet support carrying isolated droplets of an oil solution of chromogenic material, said isolated droplets being confined within respective pressure rupturable barriers, and, on the opposite surface of the same sheet or on a different sheet support, a coating of a acidic developer material effective to develop the color of the chromogenic material in solution on contact, wherein, the pressure rupturable barrier comprises microcapsules having a wall material formed from polymerization of melamine and formaldehyde, methylol melamine methylated methylol melamine, urea and formaldehyde, dimethylol urea or methylated dimethylol urea, with a copolymer of acrylic acid and alkyl acrylate; the oil solution comprises a blend of (i) a vegetable oil having a degree of unsaturation greater than 30% such as canola oil, soybean oil, corn oil, sunflower oil, or cottonseed oil with (ii) alkyl esteType: GrantFiled: March 7, 2000Date of Patent: October 30, 2001Assignee: Appleton Papers Inc.Inventors: Michael Curley Krzoska, Troy Ronald Seehafer
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Patent number: 6248692Abstract: An erasable image forming material includes a color former, a developer, and a decolorizer and is erasable by contact with an erase solvent. Free energy &agr; required for the decolorizer and the developer to form a complex and free energy &bgr; required for the color former and the developer to form a complex have a relationship represented by &agr;≦&bgr;≦10 Kcal/mol.Type: GrantFiled: September 8, 1999Date of Patent: June 19, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Kenji Sano, Satoshi Takayama, Shigeru Machida
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Patent number: 6217643Abstract: A color former composition which is composed of a mixture of the color formers 3-diethylamino-6-methyl-7-(2′,4′-dimethylanilino)fluoran and 3-dibutylamino-6-methyl-7-anilinofluoran in defined amounts. Further compositions contain mixtures of color formers including one or both of these fluoran compounds and the color formers 3-dibutylamino-6-methyl-7-anilinofluoran and/or 3-diethylamino-6-methyl-7-(3′-methylanilino)fluoran. Microcapsules containing the color former compositions can be prepared from a composition which also contains an organic solvent and can be used to prepare a pressure sensitive or thermal recording material. The mixture of color formers can provide a higher concentration in various organic solvents and/or can be used with less expensive solvents.Type: GrantFiled: February 7, 2000Date of Patent: April 17, 2001Assignees: ESCO Company, Yamamoto Chemicals, Inc.Inventors: Francis R. Kearney, Sean L. Daly, Darrel E. Cardy
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Patent number: 6071852Abstract: An internal phase solution for a coating of rupturable material for application to a base sheet to form a pressure-sensitive record material comprises one or more color-formers of which at least 90% are monoamino and/or diamino fluoran derivatives dissolved in a solvent comprising 80% to 100% of one or more vegetable and/or animal oils. Preferably the color-formers comprise only monoamino and/or diamino fluoran derivatives and the solvent comprises only one or more vegetable and/or animal oils. Dissolution of the color-formers in the solvent may be place at a temperature in the range 100.degree. C. to 135.degree. C. and micro-capsules containing such color-former solution may be formed by conventional coacervation processes below 70.degree. centigrade.Type: GrantFiled: March 23, 1998Date of Patent: June 6, 2000Assignee: Carrs Paper LimitedInventor: Victor G. Atkinson
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Patent number: 5970875Abstract: A tamper evident document for use with an impact printer having an inked ribbon, which document comprises, a substrate having a first surface and a second surface, the first surface being adapted to receive a principal visible colored image by transfer from the inked ribbon of an impact printer and being substantially free from color forming compositions which react to form visible colored images, the second surface being coated with a self-contained pressure-sensitive chromogenic composition capable of reacting to form a visible colored mirror image on the second surface, the substrate being sufficiently translucent such that the second visible colored mirror image could be viewed from the first surface, if said second visible image were not totally blocked by said principal visible image, so as to determine whether the principal and second visible colored mirror images are in register.Type: GrantFiled: September 29, 1997Date of Patent: October 26, 1999Assignee: Wallace Computer Services, Inc.Inventors: Donald J. Hoffmann, John C. H. Chang
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Patent number: 5851951Abstract: A heat sensitive recording material wherein a transparent substrate is formed with a heat sensitive recording layer thereon, the heat sensitive recording material being characterized in that the heat sensitive recording layer comprises at least a layer containing a color acceptor and a layer containing a dye, the color acceptor-containing layer being formed by a binder-containing solvent coating method and/or vapor deposition effected with a plasma created, the dye-containing layer being formed by vapor deposition or vapor deposition effected with a plasma created.Type: GrantFiled: February 26, 1997Date of Patent: December 22, 1998Assignee: Oji Paper Co., Ltd.Inventors: Tsunefumi Yamori, Shigeji Matsuzawa, Yutaka Isu
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Patent number: 5830823Abstract: The invention described herein relates to methods and systems for printing. More specifically, the present invention provides methods and systems for printing using a disposable substrate containing an essentially dry layer of microcapsules which contain a colorless dye solution in a first substrate region and a substantially dry layer of dye developing compound in a second substrate region. The disposable printing system according to the invention provides a reduced availability for bacterial growth and transfer due to its essentially dry characteristics.Type: GrantFiled: November 7, 1995Date of Patent: November 3, 1998Assignee: Larry F. VaughnInventors: Larry F. Vaughn, John G. Whitaker
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Patent number: 5814579Abstract: The invention described in the specification relates to latent image printing and developing systems and to substrates containing latent images. High quality latent images are prepared by a printing method which deposits a layer containing organic-based dye particles and organic-based developer particles, each having a particle size of from about 2 to about 6 microns, on a substrate. The image is then developed by contacting the substantially invisible image of dye and developer particles with an oxygenated solvent from an imaging device. Multicolor, vivid images are obtained as a result of the image printing and developing system of the invention.Type: GrantFiled: August 6, 1996Date of Patent: September 29, 1998Assignee: The Standard Register CompanyInventors: Mark D. Dotson, William J. Castle, Bryan A. Netsch
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Patent number: 5804528Abstract: A thermosensitive recording material with a high resistance to fogging has a thermosensitive colored image-forming layer formed on a support and includes at least one colorless dye precursor, a color-developing agent and a binder, the dye precursor being contained in a plurality of fine solid composite particles prepared by dissolving a solute including the dye precursor in a solvent which includes a polymerization component including a polyvalent isocyanate compound; emulsifying the resultant solution in an aqueous medium; and subjecting the aqueous emulsion to a polymerization reaction to thereby form the fine solid composite particles in which the dye precursor is solid-dissolved in a solid thermoplastic resin matrix formed from a resultant polyurea or polyurethane polyurea resin.Type: GrantFiled: November 19, 1996Date of Patent: September 8, 1998Assignee: Oji Paper Co., Ltd.Inventors: Yasuyuki Aoki, Tomotsugu Takahashi, Akira Maeta, Rie Harunaga, Haruo Omura, Satoshi Fukui
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Patent number: 5798315Abstract: A microcapsule-containing oil-based coating liquid wherein the coating liquid comprises a hydrophobic core material-containing microcapsule particles dispersed individually in a state of primary particle in an oil varnish for ink use or a resin for coating use, and a solvent having an affinity for both the varnish or the resin and the surface of the microcapsule wall material in a state of having been attracted with the affinity to both the varnish or the resin and the surface layer of the microcapsule wall material. The preferred solvent is a lower divalent or multivalent alcohol.A preparative method of the foregoing coating liquid by utilizing vacuum distillation is also proposed.A sheet, like a duplicating sheet of paper coated with the foregoing oil-based coating liquid is further provided.According to the present invention, a water-based microcapsules system can be advantageously converted into an oil-based one without coagulating the primary microcapsule particles.Type: GrantFiled: February 6, 1997Date of Patent: August 25, 1998Assignee: Toppan Moore Co., Ltd.Inventors: Kei Etoh, Akira Hirasawa, Hisano Higurashi, Makoto Kawamura
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Patent number: 5707924Abstract: The invention described herein relates to methods mid systems for printing. More specifically, the present invention provides methods and systems for printing using a disposable substrate containing an essentially dry layer of microcapsules which contain a colorless dye solution in a first substrate region and a substantially dry layer of dye developing compound in a second substrate region. The disposable printing system according to the invention provides a reduced availability for bacterial growth and transfer due to its essentially dry characteristics.Type: GrantFiled: November 5, 1996Date of Patent: January 13, 1998Assignee: Larry F. VaughnInventors: Larry F. Vaughn, John G. Whitaker
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Patent number: 5605874Abstract: Pressure-sensitive copying material comprises 3,1 benzoxazine chromogenic material(s) in a solvent comprising vegetable oil and/or a mono-, di or tri-functional ester of a non-aromatic mono-carboxylic acid having a straight or branched hydrocarbon chain with at least three carbon atoms in the chain in addition to the carboxyl carbon atom and an inorganic colour developer. The surface pH of the colour developer is not more than about 8.7, which gives rise to enhanced image intensity and fade resistance compared with the use of 3,1 benzoxazine chromogenic materials in the same solvent with the same colour developer at higher surface pH values.Type: GrantFiled: July 20, 1995Date of Patent: February 25, 1997Assignee: The Wiggins Teape Group LimitedInventors: David J. Taylor, Ivan Sheiham, Margaret P. Templey
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Patent number: 5558699Abstract: A thermochromic color-memory compositions exhibiting high color contrast between high color density in a colored state and sufficiently low color density in a decolored state with high freedom of selection of the reaction medium, and highly useful as a thermochromic material. The thermochromic color-memory composition comprises a homogeneous solubilized mixture of essential three components of (a) an electron-donating color-developing organic compound, (b) an electron-accepting compound, and (c) a reaction medium for controlling a color reaction of the component (a) with the component (b); the component (c) being selected from aliphatic ketones of 10 to 22 total carbons and aryl alkyl ketones of 12 to 24 total carbons; and the composition changing the color thereof with a large hysteresis width (.DELTA.H) of from 8.degree. C. to 80.degree. C.Type: GrantFiled: December 23, 1994Date of Patent: September 24, 1996Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Yutaka Shibahashi
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Patent number: 5552365Abstract: Particularly advantageous and environmentally compatible recording material comprises, in microencapsulated form, at least one 3,1-benzoxazine color donor dissolved in a solvent, and is characterized in that the solvent consists of one or more natural oils and/or one or more esters of fatty acids on which natural oils are based, or comprises such oils and/or esters.Type: GrantFiled: March 10, 1995Date of Patent: September 3, 1996Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Gunter Klug, Jurgen Weisser
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Patent number: 5532201Abstract: A thermosensitive recording layer is provided on a carrier body and is mainly composed of electron donative coloration compound, and electron acceptor compound, together with binder resin. The thermosensitive recording medium includes 500 through 5,000 ppm of organic solvent, and the organic solvent has a dielectric constant of 2.0 through 25.0 at 20.degree. C., and has a steam pressure of 10 through 200 mmHg at 20.degree. C. A protective layer is provided on the thermosensitive recording layer. The organic solvent is included in the thermosensitive layer and the protective layer.Type: GrantFiled: December 14, 1994Date of Patent: July 2, 1996Assignee: Ricoh Company, Ltd.Inventor: Hiroshi Goto
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Patent number: 5476829Abstract: Pressure-sensitive copying material utilizes a blend of rapid- and slow-developing chromogenic materials in vegetable oil solvent and an acid clay or synthetic inorganic color developer. The surface pH of the color developer is not more than 8.7, which gives rise to enhanced image intensity and fade resistance compared with the use of conventional higher color developer surface pH values.Type: GrantFiled: July 1, 1994Date of Patent: December 19, 1995Assignee: The Wiggins Teape Group LimitedInventors: David J. Taylor, Margaret P. Templey, Ivan Sheiham
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Patent number: 5464803Abstract: A chromogenic composition for use in pressure-sensitive record material comprises chromogenic material in a vegetable oil vehicle. The vehicle is made up of at least a major proportion of relatively high melting vegetable oil which is solid or semi-solid at ambient temperatures of around 20.degree.-25.degree. C., and is substantially free of esters of an acid derivable from an animal or vegetable oil. The high melting vegetable oil can be coconut oil, palm oil, palm kernel oil and/or a hardened vegetable oil such as hardened soya bean oil or hardened coconut oil.Type: GrantFiled: June 3, 1993Date of Patent: November 7, 1995Assignee: The Wiggins Teape Group LimitedInventors: Gordon B. McGuinness, Richard D. Saunders
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Patent number: 5462597Abstract: A fingerprinting system comprising means capable of releasably retaining a liquid and a liquid composition releasably retained in said means, said liquid composition comprising a leuco color-former coupound, a dialkyl phthalate wherein the alkyl group contains 1-3 carbon atoms, a substrate for receiving fingerprints associated therewith, said substrate being coated on at least a portion of one surface thereof with a color developing substance comprising a phenol/aldehyde condensation product produced by the reaction together of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, and an aldehyde, said condensation product having been reacted with a metal source.Type: GrantFiled: June 30, 1994Date of Patent: October 31, 1995Assignee: Minnesota Mining and ManufacturingInventor: Nusrallah Jubran
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Patent number: 5458974Abstract: A remarkably low odor carbonless paper solvent is provided comprising a mixture of diisopropylbiphenyl and triisopropylbiphenyl, generally in an amount of 50 to 90% by weight diisopropylbiphenyl and 10 to 40% by weight triisopropylbiphenyl. The solvent and a chromogenic substance such as a leuco dye are encapsulated to form microcapsules which are coated onto one surface of a carrier sheet. A color developing substance is then applied to another sheet to form a carbonless marking system. When the microcapsules are ruptured, the solubilized chromogenic substance contacts and reacts with the developer to form an image.Type: GrantFiled: February 28, 1994Date of Patent: October 17, 1995Assignee: Koch Industries, Inc.Inventors: Harold W. Earhart, Gregory R. Hahn, Ronald W. Osman
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Patent number: 5411798Abstract: The present invention provides a magnetic recording sheet which is excellent in its production operability, magnetic recording characteristics and visible information recording characteristics. The magnetic recording sheet comprises a substrate, a magnetic recording layer which comprises a binder having a gel content of 5-75% and ferromagnetic powders and is provided on one side of the substrate, and a visible information recording layer which comprises at least one binder selected from the group consisting of a synthetic binder and a natural binder is and provided on another side of the substrate.Type: GrantFiled: July 1, 1991Date of Patent: May 2, 1995Assignee: Mitsubishi Paper Mills LimitedInventors: Haruyoshi Funae, Shigetoshi Hiraishi
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Patent number: 5401577Abstract: A process for making melamine-formaldehyde microcapsules in an aqueous solution containing a high concentration of a water miscible or water soluble organic solvent is provided. The aqueous solution is prepared and a water insoluble melamine-formaldehyde pre-condensate is dissolved therein by adjusting the temperature and organic solvent concentration of the aqueous solution such that the melamine-formaldehyde pre-condensate is barely soluble therein. A substance to be encapsulated, preferably an oily solution containing a dyestuff precursor, is dispersed into the aqueous solution to form an emulsion, the melamine-formaldehyde pre-condensate being insoluble in the substance to be encapsulated.Type: GrantFiled: July 2, 1993Date of Patent: March 28, 1995Assignee: The Standard Register CompanyInventor: Michael E. Seitz
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Patent number: 5385879Abstract: A carbonless paper solvent is provided comprising diisopropylmethylnaphthalene, generally in an amount of from 20% to 100% of the total weight of the solvent. The solvent is combined with a chromogenic substance and is encapsuled into microcapsules. The microcapsules are applied to a sheet of material and a color developing substance is then applied to another sheet to form a carbonless marking system. When the microcapsules are ruptured, the solubilized chromogenic substance contacts and reacts with the developer to form an image. In a method of the invention, a byproduct fraction consisting of components with a boiling point range of 200.degree. to 400.degree. C. are contacted with propylene under conditions sufficient to form an alkylation product comprising diisopropylmethylnaphthalene.Type: GrantFiled: October 26, 1992Date of Patent: January 31, 1995Assignee: Koch Industries, Inc.Inventors: Harold W. Earhart, Andrew P. Komin, Dustin K. James
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Patent number: 5378674Abstract: A heat-sensitive recording material comprises a heat-sensitive color forming layer which is formed on a supporter and contains a colorless or light color leuco dyestuff as a color forming substance, a developer which develops color of the leuco dyestuff by reaction with it when heated and a sensitizer. The developer is 2,4'-dihydroxydiphenylsulfone having purity of 97 weight % or more and prepared by washing and drying crystal which is obtained by dissolving crude 2,4'-dihydroxydiphenylsulfone in an alcohol having 1 to 4 carbon atoms or in a mixture of an alcohol having 1 to 4 carbon atoms and water by heating and then cooling the solution or partially removing the solvent from the solution by distillation. The heat-sensitive recording material has excellent properties, such as reduced fog and excellent image preservation (weatherability).Type: GrantFiled: March 23, 1994Date of Patent: January 3, 1995Assignee: Nicca Chemical Co., Ltd.Inventors: Norio Kobayashi, Toshiaki Takahashi, Masahiro Makino, Masaaki Hosoda
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Patent number: 5318940Abstract: A remarkably low odor carbonless paper solvent is provided comprising a mixture of diisopropylbiphenyl and triisopropylbiphenyl, generally in an amount of 50 to 90% by weight diisopropylbiphenyl and 10 to 40% by weight triisopropylbiphenyl. The solvent and a chromogenic substance such as a leuco dye are encapsulated to form microcapsules which are coated onto one surface of a carrier sheet. A color developing substance is then applied to another sheet to form a carbonless marking system. When the microcapsules are ruptured, the solubilized chromogenic substance contacts and reacts with the developer to form an image.Type: GrantFiled: December 2, 1992Date of Patent: June 7, 1994Assignee: Koch Industries, Inc.Inventors: Harold W. Earhart, Gregory R. Hahn, Ronald W. Osman
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Patent number: 5302571Abstract: Disclosed are a crystal and crystalline solvate of a fluoran compound represented by the formula ##STR1## wherein R.sub.1 is ##STR2## and which are useful as chromogenic compounds in recording materials such as pressure-sensitive and heat-sensitive recording materials, a process for preparation of said crystal and said crystalline solvate, and recording materials comprising said crystal or said crystalline solvate.Type: GrantFiled: June 14, 1993Date of Patent: April 12, 1994Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Atsuo Otsuji, Masakatsu Nakatsuka, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi
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Patent number: 5284812Abstract: This invention relates to improved imaging systems based on the formation of green-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 2,5-bis(substituted aryl)thiazolo[5,4-d]thiazole compounds, and particularly to certain 2,5-bis(o-hydroxyaryl)thiazolo[5,4-d]thiazole 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 green-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: January 6, 1992Date of Patent: February 8, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventor: Nusrallah Jubran
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Patent number: 5283222Abstract: Disclosed are novel crystal of the fluoran compound represented by the formula (I) ##STR1## , characterized by a specific X-ray diffraction diagram; preparation process thereof; and recording materials comprising the crystal.Type: GrantFiled: September 24, 1992Date of Patent: February 1, 1994Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Masakatsu Nakatsuka, Atsuo Otsuji, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi
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Patent number: 5264409Abstract: An excellent pressure-sensitive copying material which has an excellent color developing rate, little odor, and neither offset nor bleeding, said copying material comprising an electron-accepting developer and a solution of an electron-donating color former which produces colors upon contacting with said color developer, wherein it is characterized in that the solvent of said solution comprises a mixture of 20 to 80 weight % of sec-butyldiphenylmethane, 5 to 50 weight % of sec-butyldiphenylethane (1,1) and 5 to 50 weight % of sec-butyldiphenylethane (1,2).Type: GrantFiled: March 10, 1992Date of Patent: November 23, 1993Assignee: Nippon Petrochemicals Company, LimitedInventors: Naoya Takahashi, Satoshi Narui, Yasuo Togami
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Patent number: 5250492Abstract: Carbonless coating compositions which can be printed onto one or more sheets of a business form or mailer to provide a visible image which is sharper and darker than previous coatings are provided. The compositions also find use on security documents and safety papers to provide a covert image on the document beneath information which may be subject to attempted alteration, such as the amount written on a check. The covert image becomes visible upon the application of pressure or solvent in the area coated to provide evidence of the attempted alteration. The self-contained composition includes an admixture of a color former, a color developer, and a plurality of pressure-rupturable microcapsules containing a solvent. Another solvent-sensitive composition includes an admixture of a color former and a color developer.Type: GrantFiled: March 7, 1991Date of Patent: October 5, 1993Assignee: The Standard Register CompanyInventors: Mark D. Dotson, Frank V. Parenti