Zinc Patents (Class 503/212)
  • Patent number: 9389210
    Abstract: Provided is a thermal distribution display including, on a support, a thermal distribution display layer that includes at least two electron-donating dye precursors that develop mutually different color tones, the dye precursors including at least one electron-donating dye precursor that decomposes in a temperature range of 190° C. or higher to undergo a change in hue; at least one electron-accepting compound that allows the at least two electron-donating dye precursors to develop colors; and a binder, wherein, in the thermal distribution display layer, a temperature T0.2, at which a density is 0.2 greater than a background density, satisfies the following formula (1). 0.2 T 0.2 - T min ? 0.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: July 12, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Kunihiko Ooga
  • Patent number: 7641817
    Abstract: There is provided a method for producing a silver powder having excellent dispersibility and capable of forming a paste which do not form suspended matters by phase separation and which is printed on a substrate to form a film having a uniform thickness. In this method, an alkali or a complexing agent is added to an aqueous silver salt containing solution to form a silver oxide containing slurry or an aqueous silver complex salt containing solution. After or before silver particles are deposited by reduction by adding a reducing agent to the silver oxide containing slurry or aqueous silver complex salt containing solution while stirring it, at least one chelating agent selected from the group consisting of compounds having an azole structure, dicarboxylic acids, hydroxy carboxylic acids and salts thereof is added to a silver power containing slurry solution as a dispersing agent.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: January 5, 2010
    Assignee: Dowa Mining Co., Ltd.
    Inventors: Hiroshi Matsushima, Kozo Ogi
  • Patent number: 7371709
    Abstract: Thermally developable materials that comprise a support have an antistatic backside layer that includes a quaternary ammonium salt. The same or different backside layer can also include another antistatic agent such as conductive metal particles or conductive polymers. These thermally developable materials include both thermographic and photothermographic materials that can be suitably imaged to provide images useful for medical diagnoses.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: May 13, 2008
    Inventors: Kumars Sakizadeh, Thomas J. Ludemann, Gary E. LaBelle
  • Patent number: 7348296
    Abstract: A substantially light-insensitive monosheet thermographic recording material comprising a support and on one side of the support a thermosensitive element, the thermosensitive element comprising at least one substantially light-insensitive silver salt of a carboxylic acid, at least one reducing agent therefor in thermal working relationship therewith and at least one binder, the at least one binder comprising at least one first polymer consisting of vinyl aceto-acetal monomer units and optionally monomer units selected from the group consisting of vinyl alcohol, vinyl acetate and itaconic acid monomer units, wherein the weight ratio of the at least one binder to the light-insensitive silver salt(s) of a carboxylic acid in the thermosensitive element is greater than 1.6; and the at least one binder optionally contains less than 40% by weight of a second polymer consisting of vinyl butyral monomer units and optionally vinyl alcohol and/or vinyl acetate monomer units.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: March 25, 2008
    Assignee: Agfa HealthCare
    Inventors: Carlo Uyttendaele, Ivan Hoogmartens, Huub Van Aert
  • Patent number: 7307041
    Abstract: A substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one compound selected from the group consisting of mono-alkyl tetrachloro-phthalates, di-alkyl tetrachlorophthalates and N-(tetrachloro-phthalimyl)n-alkanes, wherein n is an integer greater than or equal to 1.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: December 11, 2007
    Assignee: Agfa Healthcare
    Inventors: Ingrid Geuens, Johan Loccufier, Bart Waumans
  • Patent number: 7297658
    Abstract: A direct thermographic material has one or more thermographic layers comprising a film-forming polymer binder on a polymeric support. Disposed between the polymeric support and the one or more thermographic layers is a non-light sensitive adhesive layer comprising one or more polyisocyanate crosslinked hydrophobic polymer binders.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: November 20, 2007
    Assignee: Carestream Health, Inc.
    Inventors: David G. Baird, Raymond J. Kenney, Scott C. Moose
  • Patent number: 7294605
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one mesionic 1,2,4-triazolium-3-thiolate compound.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: November 13, 2007
    Assignee: AGFA-Healthcare
    Inventors: Johan Loccufier, Ingrid Geuens
  • Patent number: 7282468
    Abstract: Non-photosensitive direct thermographic materials comprise a reducing agent that is a catechol borate compound. These compounds can reduce silver(I) ion to metallic silver to produce a dense black silver image under the short time and high temperature conditions that occur when using thermal print-heads during direct thermal printing.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: October 16, 2007
    Assignee: Carestream Health Inc.
    Inventors: Kumars Sakizadeh, Peter J. Cowdery-Corvan, Leif P. Olson, David R. Whitcomb
  • Patent number: 7279443
    Abstract: A direct thermographic material has one or more thermographic layers comprising a film-forming polymer binder on a polymeric support. The binder for at least one thermographic layer comprises a hydrophobic, organic soluble binder that is a polyvinyl acetal having a degree of polymerization greater than 650 and less than 2500.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: October 9, 2007
    Assignee: Carestream Health, Inc.
    Inventors: Takuzo Ishida, David G. Baird, Raymond J. Kenney
  • Patent number: 7179768
    Abstract: A thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element comprising at least one substantially light-insensitive organic silver salt, at least one organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one toning agent represented by formula (I): wherein X represents the optionally substituted atoms necessary to form a 6-membered ring.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: February 20, 2007
    Assignee: Agfa-Gevaert
    Inventors: Carlo Uyttendaele, Johan Loccufier, Frank Louwet
  • Patent number: 7175977
    Abstract: A black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one five-membered heterocyclic ring compound selected from the group consisting of optionally substituted, optionally annelated 1-thia-2,3-diazole compounds; optionally substituted, optionally annelated 1-thia-2,5-diazole compounds; optionally substituted 1-thia-2,4-diazole compounds; optionally substituted 1-thia-3,4-diazole compounds; optionally substituted thiatriazole compounds; optionally substituted, optionally annelated 1-seleno-2,3-diazole compounds; optionally substituted, optionally annelated 1-seleno-2,5-diazole compounds; optionally substituted 1-seleno-2,4-diazole compounds; optionally substituted 1-seleno-3,4-diazole compounds; and optionally substituted selenotriazole compounds, with the provi
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: February 13, 2007
    Assignee: Agfa-Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier
  • Patent number: 7135432
    Abstract: Non-photosensitive direct thermographic materials comprise a reducing agent that is a specific ortho-amino-phenol, para-amino-phenol, or hydroquinone compound. These compounds can reduce silver(I) ion to metallic silver to produce a dense black silver image under the short time and high temperature conditions that occur when using thermal print-heads during direct thermal printing. The materials are characterized by their calculated aqueous deprotonation and their calculated anion HOMO energies.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: November 14, 2006
    Assignee: Eastman Kodak Company
    Inventors: David R. Whitcomb, Leif P. Olson, Peter J. Cowdery-Corvan, Kumars Sakizadeh, Takuzo Ishida
  • Patent number: 7071143
    Abstract: Non-photosensitive direct thermographic materials have a support and thermally sensitive imaging layer(s) and an outermost “protective” layer comprising: (a) a solid polymer derived from one or more olefins and from one or more ethylenically unsaturated polymerizable carboxylic acids or esters or anhydrides thereof, and (b) a branched ?-olefin polymer, and (c) optionally, an additional wax.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: July 4, 2006
    Assignee: Eastman Kodak Company
    Inventors: Raymond J. Kenney, David G. Foster, David A. Johnson
  • Patent number: 7060655
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one 2-mercapto-benzothiazole compound represented by formula (I): wherein R1, R2, R3 and R4 are independently hydrogen, an optionally substituted alkyl group, an optionally substituted aryl group, an alkoxy group, an ester group, a carbamate group, a carbonate group, a SO2R5 group, a —NR6R7 group, a nitro group, a cyano group, an acyl group, a halogen atom, an optionally alkyl or alkoxy-substituted —SO2NH-phenyl group, a perfluoro-alkyl group, a —CONHR8 group, a —NHOCR9 group, a —OCOOR10 group or a —NHCOOR11 group; R5, R9, R10 and R11 are independently an optionally substituted alkyl or an aryl group; R6, R7 and R8 are independently a hydrogen atom, an optionally substitu
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: June 13, 2006
    Assignee: AGFA Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier
  • Patent number: 7045487
    Abstract: A black and white monosheet substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, wherein the at least one toning agent is selected from compounds represented by formula (I): wherein R1 is an alkyl group optionally substituted with a hydroxy, carboxy, carboxy ester, acyl or carbonato group; X is S, O or N—R6; R6 is an optionally substituted alkyl group; R2, R3, R4 and R5 independently represent a hydrogen atom, a halogen atom or an alkyl, an alkoxy, a thio-alkoxy, a nitro, a cyano, a carboxy, a carboxy ester, an acyl, an aldehyde, an acylamido, a sulphonamido, an acylamino, a carbonato, a hydroxy or an aryl group or at least one of R2 and R3, R3 and R4 and R4 and R5 independently represent the atoms necessary to form a carbocyclic or h
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: May 16, 2006
    Assignee: AGFA Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier, Vera Drieghe
  • Patent number: 6958181
    Abstract: Compositions and methods for production of color images using leuco dye-containing color forming compositions are described. The color forming composition can include a color forming leuco dye, an activator having at least one acid group which can be protected by a protection leaving group; and a deprotecting agent configured for removing the protection leaving group upon application of energy in the form of heat or light.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: October 25, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Patent number: 6890614
    Abstract: Compositions and methods for production of color images using leuco dye-containing color forming compositions are described. The color forming composition can include a color forming leuco dye, a metal salt activator, a suppression agent configured for inhibiting the activity of the metal salt activator until application of energy in the form of heat or light, and an initiator precursor. The initiator precursor is capable of liberating scavenger species which reduce the inhibiting action of the suppression agent. The color forming compositions can be a single phase mixture of a leuco dye, metal salt activator, suppression agent, and initiator precursor which are stable under ambient conditions and form a colored composition upon application of energy.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: May 10, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Makarand P. Gore, Jayprakash Bhatt, Vladek P Kasperchik
  • Publication number: 20040198602
    Abstract: Non-photosensitive thermographic materials have a support and thermally sensitive imaging layer(s) and an outermost conductive layer on either or both sides of the support. The outermost conductive layer comprises non-acicular metal antimonate particles dispersed in a hydrophobic binder and is provided from a non-aqueous solvent-based formulation.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 7, 2004
    Applicant: Eastman Kodak Company
    Inventor: Oanh V. Pham
  • Patent number: 6774084
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxyphenyl-compound in thermal working relationship therewith and a binder, wherein said 1,2-dihydroxyphenyl-compound is represented by formula (I): R1SO2R2, wherein R1 is an optionally substituted aryl group and R2 is selected from the group consisting of a 3,4,5-trihydroxyphenyl group, a 3-alkoxy-4,5-dihydroxyphenyl group and a 3-aryloxy-4,5-dihydroxyphenyl group; or said 1,2-dihydroxyphenyl-compound is represented by formula (II): R3COOR4, wherein R3 is a 3-alkoxy-4,5-dihydroxyphenyl group or a 3-aryloxy-4,5-dihydroxyphenyl group; and R4 is an alkyl group or an aryl group; and a thermographic recording process therefor.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: August 10, 2004
    Assignee: Agfa-Gevaert
    Inventors: Johan Loccufier, Geert Defieuw, Ivan Hoogmartens
  • Patent number: 6759367
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 3,4-dihydroxybenzene compound in thermal working relationship therewith and a binder, wherein the 3,4-dihydroxybenzene compound is an aryloxo-3,4-dihydroxybenzene compound in which the aryl-group is substituted with at least one substituent having a &sgr;m-value greater than 0; or a heteroaryloxo-3,4-dihydroxybenzene compound in which the heteroaryl group has a unified aromaticity index IA greater than 53 and is optionally substituted with at least one group selected from the group consisting of aryl, hydroxy, carboxy, sulfo, sulfoalkyl, sulfoaryl, sulfonylalkyl, sulfonylaryl, annulated aryl, annulated heteroaryl, carboxyalkyl, carboxyaryl, oxoalkyl, oxoaryl, halogen, nitro, cyano and mercapto-alkyl groups; and a thermographic recording process therefor.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: July 6, 2004
    Assignee: AGFA-Gevaert
    Inventors: Johan Loccufier, Geert Defieuw, Ivan Hoogmartens
  • Patent number: 6693062
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing one or more substantially light-insensitive organic silver salts, one or more reducing agents consisting of one or more 1,2-dihydroxybenzene-compounds in thermal working relationship therewith and a binder, wherein the molar ratio of molar hydroxy-equivalents of the 1,2-dihydroxybenzene compounds to molar silver-equivalents of the substantially light-insensitive organic silver salts is between 1.2 and 6.0; the 1,2-dihydroxybenzene-compounds have a —(CH═CH)nR group in the 4 position wherein n is zero or an integer and R is a substituent with a Hammett &sgr;p constant >0.35 and <0.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: February 17, 2004
    Assignee: Agfa-Gevaert
    Inventors: Philip Dooms, Ivan Hoogmartens, Geert Defieuw
  • Patent number: 6686313
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt and an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermographic recording material comprises a reaction product of an amino-group containing polymer and a compound according to formula (I): wherein each of R1, R2, R3 and R4 is independently hydrogen or an optionally substituted alkyl, aryl, heteroaryl, alkoxy or aryloxy group; L is a divalent linking group selected from the group consisting of oxygen and optionally substituted alkyl, aryl, heteroaryl, alkenyl and alkynyl groups; and m is either 0 or 1; and n is either 0 or 1; and a preparation process therefor.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: February 3, 2004
    Assignee: Agfa-Gevaert
    Inventors: Carlo Uyttendaele, Rene De Keyzer, Johan Loccufier, Ivan Hoogmartens
  • Patent number: 6677274
    Abstract: A substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing silver behenate including phase I silver behenate having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.53°, 5.96-6.05°, 7.46-7.56°, 8.90-9.12°, 10.45-10.66°, 12.02-12.12°, 13.53-13.62°, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermographic recording material is capable upon thermal development of containing 1% of phase II silver behenate, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 5.34-5.78°, 6.12-6.41°, 7.68-7.79°, 8.30-8.59°, 9.36-9.84°, 10.6-10.96°, and/or phase III silver behenate phase, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: January 13, 2004
    Assignee: Agfa-Gevaert
    Inventors: Ingrid Geuens, Ivan Hoogmartens, Geert Defieuw
  • Patent number: 6664211
    Abstract: A substantially light-insensitive black and white thermographic recording material comprising a support and a thermosensitive element exclusive of bisphenol compounds, 4-substituted isoxazole compounds of the formula wherein R represents an aromatic group or an electron withdrawing group, organic compounds represented by R3—H, the corresponding radical of which, R3•, has a stability of from 350 to 6000 times that of a primary alkyl radical, and photosensitive active-hydrogen aromatic organic reducing agents, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, an image tone stabilizer and a binder, characterized in that the image tone stabilizer is a sterically hindered monophenol; a recording process therefor; and the use of a sterically hindered monophenol in a substantially light-insensitive thermographic recording material as an image tone stabilize
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: December 16, 2003
    Assignee: Agfa-Gevaert
    Inventors: Johan Loccufier, Ivan Hoogmartens
  • Publication number: 20030186809
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing one or more substantially light-insensitive organic silver salts, one or more reducing agents consisting of one or more 1,2-dihydroxybenzene-compounds in thermal working relationship therewith and a binder, wherein the molar ratio of molar hydroxy-equivalents of the 1,2-dihydroxybenzene compounds to molar silver-equivalents of the substantially light-insensitive organic silver salts is between 1.2 and 6.0; the 1,2-dihydroxybenzene-compounds have a —(CH═CH)nR group in the 4 position wherein n is zero or an integer and R is a substituent with a Hammett &sgr;p constant >0.35 and <0.
    Type: Application
    Filed: June 26, 2002
    Publication date: October 2, 2003
    Applicant: AGFA-GEVAERT
    Inventors: Philip Dooms, Ivan Hoogmartens, Geert Defieuw
  • Publication number: 20030175630
    Abstract: A silver salt photothermographic imaging material is disclosed, comprising a light-sensitive aliphatic acid silver salt, a light-sensitive emulsion containing light-sensitive halide grains, a reducing agent for silver ions, a binder and a cross-linking agent, wherein the cross-linking agent is an aromatic polyisocyanate compound and the photothermographic material further comprises a compound selected from compounds represented by the following formulas.
    Type: Application
    Filed: January 8, 2003
    Publication date: September 18, 2003
    Inventors: Hirobumi Yamashita, Toshihisa Takeyama
  • Publication number: 20030139292
    Abstract: A black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, a binder and optionally photosensitive silver halide, characterized in that the thermosensitive element further contains deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of the at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1; and the use for the purpose of increasing the ratio of Dmax to the quantity of said substantially light-insensitive organic silver salts per unit area of the above-mentioned thermographic recording material.
    Type: Application
    Filed: November 27, 2002
    Publication date: July 24, 2003
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Luc Verberckt, Ivan Hoogmartens, Frank De Voeght, Iris Vanwelkenhuysen
  • Patent number: 6586363
    Abstract: A substantially light-insensitive black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, an image tone stabilizer and a binder, wherein the image tone stabilizer is a compound according to formula (I): wherein R1 is hydrogen, an alkali metal ion, an ammonium ion, a phosphonium ion, a sulphonium ion, an alkaline earth ion or an optionally substituted alkyl, cycloalkyl, heterocyclic, alkaryl, aralkyl, heteroaryl or aryl group; R2 is an optionally substituted alkyl, cycloalkyl, heterocyclic, alkaryl, aralkyl, heteroaryl or aryl group; or R1 and R2 together represent the atoms necessary to form a ring structure; and X is hydrogen, an alkali metal ion, an ammonium ion, a phosphonium ion, a sulphonium ion or an alkaline earth ion; and a recording process therefor.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: July 1, 2003
    Assignee: AGFA-Gevaert
    Inventors: Johan Loccufier, Ivan Hoogmartens
  • Publication number: 20030064891
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxyphenyl-compound in thermal working relationship therewith and a binder, wherein said 1,2-dihydroxyphenyl-compound is represented by formula (I): R1SO2R2, wherein R1 is an optionally substituted aryl group and R2 is selected from the group consisting of a 3,4,5-trihydroxyphenyl group, a 3-alkoxy-4,5-dihydroxyphenyl group and a 3-aryloxy-4,5-dihydroxyphenyl group; or said 1,2-dihydroxyphenyl-compound is represented by formula (II): R3COOR4, wherein R3 is a 3-alkoxy-4,5-dihydroxyphenyl group or a 3-aryloxy-4,5-dihydroxyphenyl group; and R4 is an alkyl group or an aryl group; and a thermographic recording process therefor.
    Type: Application
    Filed: March 26, 2002
    Publication date: April 3, 2003
    Applicant: AGFA-GEVAERT
    Inventors: Johan Loccufier, Geert Defieuw, Ivan Hoogmartens
  • Publication number: 20030054958
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 3,4-dihydroxybenzene compound in thermal working relationship therewith and a binder, wherein the 3,4-dihydroxybenzene compound is an aryloxo-3,4-dihydroxybenzene compound in which the aryl-group is substituted with at least one substituent having a &sgr;m-value greater than 0; or a heteroaryloxo-3,4-dihydroxybenzene compound in which the heteroaryl group has a unified aromaticity index IA greater than 53 and is optionally substituted with at least one group selected from the group consisting of aryl, hydroxy, carboxy, sulfo, sulfoalkyl, sulfoaryl, sulfonylalkyl, sulfonylaryl, annulated aryl, annulated heteroaryl, carboxyalkyl, carboxyaryl, oxoalkyl, oxoaryl, halogen, nitro, cyano and mercapto-alkyl groups; and a thermographic recording process therefor.
    Type: Application
    Filed: March 27, 2002
    Publication date: March 20, 2003
    Applicant: AGFA-GEVAERT
    Inventors: Johan Loccufier, Geert Defieuw, Ivan Hoogmartens
  • Patent number: 6509296
    Abstract: A thermally imageable element can be imaged using heat alone without the need for photosensitivity or post-imaging processing. The element contains image-forming chemistry that comprises i) image precursor chemistry and ii) a catalyst or a catalyst precursor that upon imagewise heating is capable of promoting thermally induced image formation with the image precursor chemistry. The image-forming chemistry i) and ii) components are in reactive association and uniformly dispersed or dissolved within a binder in one or more layers of the element. Thus, the element is capable of being thermally addressed to provide a visible image as a result of thermally induced catalytic transformation of the image-forming chemistry.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: January 21, 2003
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Henry J. Gysling, David F. Jennings
  • Publication number: 20020123426
    Abstract: A substantially light-insensitive black and white thermographic recording material comprising a support and a thermosensitive element exclusive of bisphenol compounds, 4-substituted isoxazole compounds of the formula 1
    Type: Application
    Filed: November 29, 2001
    Publication date: September 5, 2002
    Applicant: Agfa-Gevaert
    Inventors: Johan Loccufier, Ivan Hoogmartens
  • Publication number: 20020111270
    Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt and an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermographic recording material comprises a reaction product of an amino-group containing polymer and a compound according to formula (I): 1
    Type: Application
    Filed: November 28, 2001
    Publication date: August 15, 2002
    Applicant: Agfa-Gevaert
    Inventors: Carlo Uyttendaele, Rene De Keyzer, Johan Loccufier, Ivan Hoogmartens
  • Publication number: 20020107146
    Abstract: A substantially light-insensitive black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, an image tone stabilizer and a binder, wherein the image tone stabilizer is a compound according to formula (I): 1
    Type: Application
    Filed: November 27, 2001
    Publication date: August 8, 2002
    Applicant: Agfa-Gevaert
    Inventors: Johan Loccufier, Ivan Hoogmartens
  • Patent number: 6403527
    Abstract: A process for using a substantially light-insensitive mono sheet direct thermal imaging material for producing a non-retro-reflective readable object attachable to a second object for information purposes, the imaging material including a support, a thermosensitive element and an attaching layer, wherein the thermosensitive element contains a substantially light-insensitive organic silver salt, a reducing agent therefore in thermal working relationship therewith, a binder and does not contain a di- or triarylmethane dye precursor compound possessing within its di- or triarylmethane structure an aryl group substituted in the ortho position to the meso carbon atom with an S-containing moiety ring-closed on the meso carbon atom selected from a thiolactone, dithiolactone and thioether moiety.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: June 11, 2002
    Assignee: AGFA-Gevaert
    Inventors: Bartholomeus Cyriel Horsten, Guy Denis Jansen
  • Patent number: 6403528
    Abstract: An electron accepting developer useful for producing visible images by reaction with an electron donor in carbonless paper and photo- imaging systems, the developer comprising an acid-treated, water insoluble alkali metal-modified, inorganic oxide or an acid-treated molecular sieve.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: June 11, 2002
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Patent number: 6391824
    Abstract: A non-impact, thermal transfer printing sheet having a base sheet of fibrous paper or synthetic with or without a security device, coated with a composition comprising (1) lactone, spiropyrane coloration, or an iron metallic complexes that reacts with weak an organic acid to produce coloration when the sheet is heated via a thermal head, (2) an activator to accelerate the reaction, (3) absorbent materials to absorb the resulting products of the reaction, and (4) an inorganic phosphorescent ZnS:Cu pigment having a particle size sufficient to produce phosphorescence in a predetermined time and wave-length and a process of making thereof are disclosed. The sheet is capable of being printed using a thermal transfer printing head and providing phosphorescence when activated by ultraviolet light containing wavelengths of between 440 and 640 nm.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: May 21, 2002
    Assignee: Keylink Gestao E Investimentos LDA.
    Inventor: Pedro Margarit Daroca
  • Patent number: 6383982
    Abstract: A color developer composition comprising (A) a color developer containing a polyvalent metal salt of a salicylic acid derivative, and (B) a polyester polyol having in the molecule skeleton at least one carbonate bond or ester bond, and a derivative thereof, an aqueous dispersion and a color developing ink using this color developer composition, and a recording sheet having a layer containing this color developer composition on a base material.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: May 7, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Jotaro Kida, Yoshimitsu Tanabe, Nobuhiro Takizawa, Masakatsu Nakatsuka
  • Publication number: 20020052294
    Abstract: A substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing silver behenate including phase I silver behenate having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.53°, 5.96-6.05°, 7.46-7.56°, 8.90-9.12°, 10.45-10.66°, 12.02-12.12°, 13.53-13.62°, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermographic recording material is capable upon thermal development of containing 1% of phase II silver behenate, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 5.34-5.78°, 6.12-6.41°, 7.68-7.79°, 8.30-8.59°, 9.36-9.84°, 10.6-10.96°, and/or phase III silver behenate phase, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.
    Type: Application
    Filed: May 24, 2001
    Publication date: May 2, 2002
    Inventors: Ingrid Geuens, Ivan Hoogmartens, Geert Defieuw
  • Patent number: 6337303
    Abstract: A substantially light-insensitive black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, at least one organic reducing agent therefor in thermal working relationship therewith, a binder, at least one stabilizer and optionally an &agr;,(&ohgr;-alkyldicarboxylic acid with a straight chain alkyl group having at least 4 carbon atoms which may be substituted, however neither including 3,5-dihydroxybenzoic acid as acidic reagent nor di-tert-butyl-p-cresol as a sole organic reducing agent, wherein the at least one stabilizer is represented by formula (I): R1—(O═C)—R2—(C═O)—R3  (I) wherein R2 is a divalent straight chain saturated hydrocarbon group with 2 or 3 carbon atoms which may be substituted with one or more of ═O, ═S, ═CR4R5, an alkyl group, a cycloalkyl group, a hydroxy group, a thiol group, a —
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: January 8, 2002
    Assignee: Agfa-Gevaert
    Inventors: Philip Dooms, Peter Michiels, Ingrid Geuens
  • Patent number: 6326331
    Abstract: A substantially light-insensitive black and white non-chlorine-containing stabilizer-containing monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, characterized in that the non-chlorine-containing stabilizer is selected from the group consisting of 2-(2′-hydroxyphenyl)benzotriazole derivatives and 2-hydroxy-benzophenone derivatives; a thermographic recording process therefor; and the use thereof as a stabilizer against direct sunlight.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: December 4, 2001
    Assignee: Agfa-Gevaert
    Inventors: Bartholomeus Cyriel Horsten, Guy Denis Jansen
  • Patent number: 6313065
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element provided with a protective layer, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxy-benzene derivative in thermal working relationship therewith and a first polymer having active hydrogen atoms at least part of which has reacted with a first polyisocyanate selected from the group consisting of: hexamethylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanat, naphthylene diisocyanate and triphenylmethane-p,p′,p″-trityl triisocyanate; and the protective layer being exclusive of fluorine-containing compounds; and a thermographic recording process therefor.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: November 6, 2001
    Assignee: Agfa-Gevaert
    Inventors: Bartholomeus Cyriel Horsten, Guy Denis Jansen, Peter Slabbinck
  • Patent number: 6211116
    Abstract: A substantially light-insensitive black and white thermographic recording material having a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, characterized in that the thermosensitive element contains substantially light-insensitive mixed crystals of two or more silver salts of organic carboxylic acids with one or more carboxylic acid groups; and a recording process therewith.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: April 3, 2001
    Assignee: Agfa-Gevaert
    Inventors: Geert Defieuw, Johan Loccufier, Yvan Hoogmartens, Ingrid Geuens
  • Patent number: 6211115
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxyphenyl-compound in thermal working relationship therewith and a binder, wherein the 1,2-dihydroxyphenyl-compound is represented by formula (I): where n is 0 or 1; R is —(C═O)R1, —(C═O)NR1R2, —CN, —SO3R2, —SO2R2, —SOR2, —SO2NR2R3 or —PO3R2R3; R1 is H or an alkyl group with 12 or less carbon atoms; and R2 and R3 are independently H or an alkyl or an aryl group; and R1 and R2 together can provide the atoms to close a carbocyclic or heterocyclic ring; and R2 and R3 together can represent the atoms to close a carbocyclic or heterocyclic ring; and a recording process therefor.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: April 3, 2001
    Assignee: Agfa-Gevaert
    Inventors: Johan Loccufier, Bart Horsten, Peter Slabbinck
  • Patent number: 6207614
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element which is optionally provided with a protective layer, wherein the thermosensitive element contains substantially light-insensitive mixed crystals of at least one organic silver salt and at least one organic fatty acid derivative, an organic reducing agent for the organic silver salt in thermal working relationship therewith and a binder and wherein the substantially light-insensitive mixed crystals are present in an inner layer of the thermographic recording material; and a recording process therewith.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: March 27, 2001
    Assignee: Agfa-Gevaert
    Inventors: Geert Defieuw, Johan Loccufier, Armand Van-den Bergh
  • Patent number: 6197722
    Abstract: The invention relates to an imaging member comprising at least one light insensitive layer substantially free of an oxidant and comprising a catalytic center and multifunctional dye forming coupler. It further relates to a method of imaging comprising providing an imaging member comprising at least one light insensitive layer comprising a catalytic center and multifunctional dye forming coupler, imagewise applying a first developer solution that will react with said multifunctional dye forming coupler, imagewise applying a second developer solution that will react with multifunctional dye forming coupler, wherein said first developer solution and said second developer solution produce different colors.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: March 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lyn M. Irving, Richard P. Szajewski
  • Patent number: 6127313
    Abstract: A thermographic recording material is provided by the present invention comprising on the same side of a support, called the heat-sensitive side, a thermosensitive element and a outermost layer which contains a cured polymer or cured polymer composition and colloidal silica, wherein the colloidal silica is substantially present in its acidified form and the outermost layer further contains a buffer with a pH between 2 and 7 consisting of at least one acid and at least one non-metallic salt of an acid; a method of recording an image therewith and a production process therefor.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: October 3, 2000
    Assignee: Agfa-Gevaert
    Inventors: Geert Defieuw, Johan Loccufier, Ivan Hoogmartens, Herman Uytterhoeven
  • Patent number: 6051530
    Abstract: A process for producing a thermographic recording material including on one side of a support, called the heat-sensitive side, a thermosensitive element, the outermost layer on the heat-sensitive side containing a cured polymer or cured polymer composition and silica, comprising the steps of: providing the heat-sensitive side of the support with an outermost layer by coating with a composition produced by mixing ingredients including colloidal silica, a curable polymer and a curing agent therefor; and drying and curing the outermost layer, wherein any acidic groups present in the colloidal silica upon acidification are substantially neutralized with ammonium ions, the curable polymer is a hydrophilic polymer having active hydrogen atoms and the curing agent is selected from the group consisting of polyisocyanates, aldehydes, titanates, zirconates, sulfone, boric acid and hydrolyzed tetraalkyl orthosilicate; and a method of recording an image therewith.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: April 18, 2000
    Assignee: Agfa-Gevaert
    Inventors: Geert Defieuw, Rafael Samijn, Ivan Steels, Eddy Michiels
  • Patent number: 5994262
    Abstract: A sheet set for temperature control comprises: a recording sheet that is provided on one surface of a substrate and has a recording layer incorporating a zinc salt of a salicylic acid derivative as a color acceptor, or a leuco dye; and an adhesive sheet that is provided on one surface of another substrate and has a first adhesive layer incorporating an adhesive, an ester derivative of the formula (1) or (2), and a leuco dye, or a zinc salt of a salicylic acid derivative as a color acceptor.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: November 30, 1999
    Assignee: OJI Paper Co., Ltd.
    Inventors: Takeshi Iida, Tetsuo Tsuchida
  • Patent number: 5709738
    Abstract: Coating compositions for ink jet printing, more specifically for the CB, CF and/or CFB sheets in carbonless copy paper. The compositions include a bivalent metal salt of a C.sub.12 to C.sub.24 alkyl acid, such as calcium stearate or zinc stearate, which has been found to significantly improve ink jet print quality.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: January 20, 1998
    Inventors: Malcolm Cronlund, William P. Subsara