Identified Solvent Or Dispersant For Color-former, Other Than Mere Mineral Oil Patents (Class 503/213)
  • Patent number: 9302830
    Abstract: 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: Grant
    Filed: April 12, 2013
    Date of Patent: April 5, 2016
    Assignee: Crown Packaging Technology, Inc.
    Inventors: Christopher Paul Ramsey, Peter Alan Young, Daniel A. Abramowicz
  • Publication number: 20150119237
    Abstract: 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: Application
    Filed: May 13, 2014
    Publication date: April 30, 2015
    Applicant: ZINK IMAGING, INC.
    Inventors: Michael P. FILOSA, Stephen J. TELFER, John L. Marshall, Richard M. Allen, John M. Hardin
  • Patent number: 8722574
    Abstract: 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: Grant
    Filed: April 27, 2012
    Date of Patent: May 13, 2014
    Assignee: Zink Imaging, Inc.
    Inventors: Michael P Filosa, Stephen J. Telfer, John L Marshall, Richard M Allen, John M Hardin
  • Patent number: 8709973
    Abstract: 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: Grant
    Filed: December 31, 2011
    Date of Patent: April 29, 2014
    Assignee: Sanford, L.P.
    Inventor: Wing Sum Vincent Kwan
  • Patent number: 8652996
    Abstract: 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: Grant
    Filed: December 31, 2011
    Date of Patent: February 18, 2014
    Assignee: Sanford, L.P.
    Inventor: Wing Sum Vincent Kwan
  • Patent number: 8642504
    Abstract: 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: Grant
    Filed: July 17, 2006
    Date of Patent: February 4, 2014
    Assignee: Gill Jennings & Every LLP
    Inventors: Jonathan Campbell, William Walker, Alan Platt, John Whitworth, Karen O'Donoghue, Ann Hunt, Howard Roger Dungworth, John Mark Plonka
  • Publication number: 20130210622
    Abstract: 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: Application
    Filed: October 7, 2011
    Publication date: August 15, 2013
    Applicant: THE PILOT INK CO., LTD.
    Inventor: Yoshiaki Ono
  • Patent number: 8277696
    Abstract: 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: Grant
    Filed: May 12, 2010
    Date of Patent: October 2, 2012
    Assignee: The Pilot Ink Co., Ltd.
    Inventor: Yoshiaki Ono
  • Publication number: 20110092364
    Abstract: 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: Application
    Filed: October 21, 2009
    Publication date: April 21, 2011
    Applicant: XEROX CORPORATION
    Inventors: Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Peter M. Kazmaier
  • Patent number: 7829497
    Abstract: 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: Grant
    Filed: May 12, 2006
    Date of Patent: November 9, 2010
    Assignee: Zink Imaging, Inc.
    Inventors: Michael P. Filosa, Stephen J. Telfer, John L. Marshall, Richard M. Allen, John M. Hardin
  • Publication number: 20080248950
    Abstract: 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: Application
    Filed: October 3, 2007
    Publication date: October 9, 2008
    Inventors: Ibrahim Katampe, Gerard Ross
  • Publication number: 20080234128
    Abstract: 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: Application
    Filed: March 18, 2008
    Publication date: September 25, 2008
    Applicant: Ricoh Company, Ltd.
    Inventors: Motoi ORIHARA, Norihiko Inaba
  • Patent number: 6846619
    Abstract: 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: Grant
    Filed: March 22, 2002
    Date of Patent: January 25, 2005
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshikazu Kaneko, Yasutomo Mori, Kunio Hayakawa, Mitsunobu Morita, Takeshi Kajikawa, Shuuji Miyamoto, Yuuichi Kawaguchi
  • Patent number: 6815138
    Abstract: 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: Grant
    Filed: September 16, 2002
    Date of Patent: November 9, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiaki Aono
  • Patent number: 6815679
    Abstract: 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: Grant
    Filed: February 11, 2003
    Date of Patent: November 9, 2004
    Assignee: Mitsubishi Paper Mills Limited
    Inventor: Yoichiro Azuma
  • Patent number: 6727203
    Abstract: 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: Grant
    Filed: February 12, 2002
    Date of Patent: April 27, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kimio Ichikawa
  • Publication number: 20040043902
    Abstract: 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: Application
    Filed: July 2, 2003
    Publication date: March 4, 2004
    Inventors: Shigeru Oda, Takaaki Mori
  • Patent number: 6620227
    Abstract: 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: Grant
    Filed: December 11, 2000
    Date of Patent: September 16, 2003
    Assignee: The Standard Register Company
    Inventors: Gary W. Doll, Rajendra Mehta
  • Patent number: 6586364
    Abstract: 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: Grant
    Filed: December 7, 2000
    Date of Patent: July 1, 2003
    Assignee: Pentax Corporation
    Inventors: Yukio Kubota, Minoru Suzuki, Kazuyuki Shimbo, Yutaka Igari
  • Patent number: 6494950
    Abstract: 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: Grant
    Filed: September 18, 2000
    Date of Patent: December 17, 2002
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Katsuyuki Fujita, Kuniyuki Senga
  • Patent number: 6348432
    Abstract: 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: Grant
    Filed: March 10, 2000
    Date of Patent: February 19, 2002
    Assignee: Nashua Corporation
    Inventor: Mohamed Elmasry
  • Patent number: 6310002
    Abstract: 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 este
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: October 30, 2001
    Assignee: Appleton Papers Inc.
    Inventors: Michael Curley Krzoska, Troy Ronald Seehafer
  • Patent number: 6248692
    Abstract: 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: Grant
    Filed: September 8, 1999
    Date of Patent: June 19, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Sano, Satoshi Takayama, Shigeru Machida
  • Patent number: 6217643
    Abstract: 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: Grant
    Filed: February 7, 2000
    Date of Patent: April 17, 2001
    Assignees: ESCO Company, Yamamoto Chemicals, Inc.
    Inventors: Francis R. Kearney, Sean L. Daly, Darrel E. Cardy
  • Patent number: 6071852
    Abstract: 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: Grant
    Filed: March 23, 1998
    Date of Patent: June 6, 2000
    Assignee: Carrs Paper Limited
    Inventor: Victor G. Atkinson
  • Patent number: 5970875
    Abstract: 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: Grant
    Filed: September 29, 1997
    Date of Patent: October 26, 1999
    Assignee: Wallace Computer Services, Inc.
    Inventors: Donald J. Hoffmann, John C. H. Chang
  • Patent number: 5851951
    Abstract: 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: Grant
    Filed: February 26, 1997
    Date of Patent: December 22, 1998
    Assignee: Oji Paper Co., Ltd.
    Inventors: Tsunefumi Yamori, Shigeji Matsuzawa, Yutaka Isu
  • Patent number: 5830823
    Abstract: 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: Grant
    Filed: November 7, 1995
    Date of Patent: November 3, 1998
    Assignee: Larry F. Vaughn
    Inventors: Larry F. Vaughn, John G. Whitaker
  • Patent number: 5814579
    Abstract: 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: Grant
    Filed: August 6, 1996
    Date of Patent: September 29, 1998
    Assignee: The Standard Register Company
    Inventors: Mark D. Dotson, William J. Castle, Bryan A. Netsch
  • Patent number: 5804528
    Abstract: 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: Grant
    Filed: November 19, 1996
    Date of Patent: September 8, 1998
    Assignee: Oji Paper Co., Ltd.
    Inventors: Yasuyuki Aoki, Tomotsugu Takahashi, Akira Maeta, Rie Harunaga, Haruo Omura, Satoshi Fukui
  • Patent number: 5798315
    Abstract: 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: Grant
    Filed: February 6, 1997
    Date of Patent: August 25, 1998
    Assignee: Toppan Moore Co., Ltd.
    Inventors: Kei Etoh, Akira Hirasawa, Hisano Higurashi, Makoto Kawamura
  • Patent number: 5707924
    Abstract: 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: Grant
    Filed: November 5, 1996
    Date of Patent: January 13, 1998
    Assignee: Larry F. Vaughn
    Inventors: Larry F. Vaughn, John G. Whitaker
  • Patent number: 5605874
    Abstract: 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: Grant
    Filed: July 20, 1995
    Date of Patent: February 25, 1997
    Assignee: The Wiggins Teape Group Limited
    Inventors: David J. Taylor, Ivan Sheiham, Margaret P. Templey
  • Patent number: 5558699
    Abstract: 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: Grant
    Filed: December 23, 1994
    Date of Patent: September 24, 1996
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Akio Nakashima, Yutaka Shibahashi
  • Patent number: 5552365
    Abstract: 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: Grant
    Filed: March 10, 1995
    Date of Patent: September 3, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Gunter Klug, Jurgen Weisser
  • Patent number: 5532201
    Abstract: 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: Grant
    Filed: December 14, 1994
    Date of Patent: July 2, 1996
    Assignee: Ricoh Company, Ltd.
    Inventor: Hiroshi Goto
  • Patent number: 5476829
    Abstract: 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: Grant
    Filed: July 1, 1994
    Date of Patent: December 19, 1995
    Assignee: The Wiggins Teape Group Limited
    Inventors: David J. Taylor, Margaret P. Templey, Ivan Sheiham
  • Patent number: 5464803
    Abstract: 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: Grant
    Filed: June 3, 1993
    Date of Patent: November 7, 1995
    Assignee: The Wiggins Teape Group Limited
    Inventors: Gordon B. McGuinness, Richard D. Saunders
  • Patent number: 5462597
    Abstract: 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: Grant
    Filed: June 30, 1994
    Date of Patent: October 31, 1995
    Assignee: Minnesota Mining and Manufacturing
    Inventor: Nusrallah Jubran
  • Patent number: 5458974
    Abstract: 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: Grant
    Filed: February 28, 1994
    Date of Patent: October 17, 1995
    Assignee: Koch Industries, Inc.
    Inventors: Harold W. Earhart, Gregory R. Hahn, Ronald W. Osman
  • Patent number: 5411798
    Abstract: 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: Grant
    Filed: July 1, 1991
    Date of Patent: May 2, 1995
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Haruyoshi Funae, Shigetoshi Hiraishi
  • Patent number: 5401577
    Abstract: 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: Grant
    Filed: July 2, 1993
    Date of Patent: March 28, 1995
    Assignee: The Standard Register Company
    Inventor: Michael E. Seitz
  • Patent number: 5385879
    Abstract: 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: Grant
    Filed: October 26, 1992
    Date of Patent: January 31, 1995
    Assignee: Koch Industries, Inc.
    Inventors: Harold W. Earhart, Andrew P. Komin, Dustin K. James
  • Patent number: 5378674
    Abstract: 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: Grant
    Filed: March 23, 1994
    Date of Patent: January 3, 1995
    Assignee: Nicca Chemical Co., Ltd.
    Inventors: Norio Kobayashi, Toshiaki Takahashi, Masahiro Makino, Masaaki Hosoda
  • Patent number: 5318940
    Abstract: 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: Grant
    Filed: December 2, 1992
    Date of Patent: June 7, 1994
    Assignee: Koch Industries, Inc.
    Inventors: Harold W. Earhart, Gregory R. Hahn, Ronald W. Osman
  • Patent number: 5302571
    Abstract: 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: Grant
    Filed: June 14, 1993
    Date of Patent: April 12, 1994
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Atsuo Otsuji, Masakatsu Nakatsuka, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi
  • Patent number: 5284812
    Abstract: 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: Grant
    Filed: January 6, 1992
    Date of Patent: February 8, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Nusrallah Jubran
  • Patent number: 5283222
    Abstract: 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: Grant
    Filed: September 24, 1992
    Date of Patent: February 1, 1994
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masakatsu Nakatsuka, Atsuo Otsuji, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi
  • Patent number: 5264409
    Abstract: 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: Grant
    Filed: March 10, 1992
    Date of Patent: November 23, 1993
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Naoya Takahashi, Satoshi Narui, Yasuo Togami
  • Patent number: 5250492
    Abstract: 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: Grant
    Filed: March 7, 1991
    Date of Patent: October 5, 1993
    Assignee: The Standard Register Company
    Inventors: Mark D. Dotson, Frank V. Parenti