Identified Color-former Patents (Class 503/218)
  • Patent number: 11912052
    Abstract: Provided is a thermosensitive recording medium having excellent oil resistance among various performances required for the thermosensitive recording medium. The thermosensitive recording medium has a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer contains N-[2-(3-phenylureido)phenyl] benzenesulfonamide and an urea-based compound represented by the general formula 1 as the electron accepting color developing agents, wherein R1 represents a substituted or unsubstituted alkyl group, aralkyl group or aryl group, and R2 represents a hydrogen atom or an alkyl group.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: February 27, 2024
    Inventors: Kentaro Kawasaki, Yuka Murata, Kenji Hirai, Yoshimi Midorikawa
  • Patent number: 9133362
    Abstract: A mechanochromic coating composition is disclosed comprising a binder composition and a crystalline mechanophore. The mechanophore changes color upon application of a mechanical load to the coating composition.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: September 15, 2015
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Charles R. Hickenboth, Gregory J. McCollum, Elizabeth Furar
  • Publication number: 20150099625
    Abstract: Provided is a direct thermal media containing a regular repeating pattern of color-forming thermally-imageable stripes printed parallel to the print head element line and a system for using such direct thermal media in color direct thermal printers including an optical registration system optimized for use with this media and an image processing unit that monitors the position of the stripe pattern relative to the print head and synchronizes the start of the printing process. This direct thermal media together with the optical registration system and image processing unit comprise an operative system in that the design of the thermal media, the optical registration system and image processing unit used to control printing are optimized for use with each other. This system may be utilized, for example, in color thermal printers for documents, receipts, tags, tickets or labels.
    Type: Application
    Filed: October 21, 2014
    Publication date: April 9, 2015
    Inventors: Clive Hohberger, David Womack, Bruce N. Alleshouse, James Clark, Wolfgang Strobel
  • Publication number: 20140371063
    Abstract: A substrate coated with a markable ink formulation, comprising AOM. Further, the substrate is covered by a thermoplastic polymer layer, such that the ink formulation is situated between the substrate and the thermoplastic polymer layer and/or in the thermoplastic polymer layer.
    Type: Application
    Filed: December 12, 2012
    Publication date: December 18, 2014
    Inventors: Anthony Jarvis, Chris Wyres, Ladislav Hurdalek, Marcus Rehberger
  • Publication number: 20140371064
    Abstract: Disclosed and claimed herein is a thermosensitive recording medium, having a base sheet; a binder; and a thermosensitive material on at least one surface of the base sheet comprising: one or more oxidizing agents; and a dye precursor.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 18, 2014
    Inventor: John C. Warner
  • Publication number: 20140342903
    Abstract: A substrate coated with a markable ink formulation, comprising a thermo activated acid generator (TAG) and a halochromic leuco dye. The thermo activated acid generator is selected form the group consisting of: an amine salt of an organic metal compound comprising boron or silicone and amine neutralized polyalkylnaphthalene polysulphonic acid derivatives. Further, the substrate is covered by a thermoplastic polymer layer, such that the ink formulation is situated between the substrate and the thermoplastic polymer layer and/or in the thermoplastic polymer layer.
    Type: Application
    Filed: December 12, 2012
    Publication date: November 20, 2014
    Inventors: Anthony Jarvis, Chris Wyres, Ladislav Hurdalek, Marcus Rehberger
  • Patent number: 8603944
    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: Grant
    Filed: October 21, 2009
    Date of Patent: December 10, 2013
    Assignee: Xerox Corporation
    Inventors: Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Peter M. Kazmaier
  • Patent number: 8545738
    Abstract: Provided are ink compositions, methods for making photochromic inks, and methods of using the photochromic inks for erasable media annotation. In accordance with various embodiments, there is an ink composition including a carrier medium and one or more photochromic species in the carrier medium, wherein each of the one or more photochromic species can be selected from the group consisting of monomeric photochromic molecules, photochromic oligomers, and photochromic polymers, and wherein each one of the one or more photochromic species exhibits a reversible transition from a colorless state to a colored state upon exposure to a radiant condition wherein the radiant condition can be selected from the group consisting of a radiant energy and a combination of a radiant energy and thermal energy.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 1, 2013
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Gabriel Iftime, Kentaro Morimitsu, Adela Goredema
  • Publication number: 20130150238
    Abstract: A thermochromic substrate and a method of manufacturing the same, in which the crystallinity of a thermochromic layer can be improved. The method includes the steps of forming a pre-thermochromic layer on a glass substrate by coating the glass substrate with pure vanadium, forming a seed layer by heat-treating the pre-thermochromic layer, and forming a thermochromic layer by coating the heat-treated seed layer with a vanadium dioxide (VO2) thin film.
    Type: Application
    Filed: April 13, 2012
    Publication date: June 13, 2013
    Inventors: Yongwon CHOI, Yung-Jin JUNG, Donggun MOON, Jeeyun CHA
  • Patent number: 8303858
    Abstract: The present disclosure relates to the process of making a photochromic composite having a photochromic polymer and a binder polymer. The photochromic polymer is made by solution polymerization of the photochromic monomer and two monomers in the presence of a base and the binder polymer is made by solution polymerization of the two monomers in the presence of a base.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: November 6, 2012
    Assignee: Xerox Corporation
    Inventors: Kentaro Morimitsu, Adela Goredema, Gabriel Iftime, Peter M. Kazmaier, Roger E. Gaynor
  • Patent number: 8278243
    Abstract: An ink formulation comprises a marking component and a metal salt that absorbs laser irradiation at 700-2000 mn and thereby causes the marking component to change colour. A copper salt in particular allows effective marking with a diode or CO2 laser.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 2, 2012
    Assignee: Datalase Ltd.
    Inventors: Nazir Khan, Martin Robert Walker
  • Patent number: 8187998
    Abstract: A document has a carrier layer and at least a functional layer. The functional layer is provided with a content of bacteriorhodopsin as color pigment and, when the document is printed generating an essentially irreversible color change in the area of the bacteriorhodopsin by a supply of energy.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: May 29, 2012
    Assignee: U-NICA Technology AG
    Inventors: Horst J. Lindemann, Samuel Schindler
  • Publication number: 20110287931
    Abstract: A rewritable recording material can be provided which contains at least one kind of phenolic compounds represented by formula (I) and which is capable of stably repeating coloring and discoloring for a long period of time as well as exerting superior storage properties such as heat resistance and moisture and heat resistance of the colored image and light resistance of the background. Also provided are a composition for forming a rewritable color-forming layer which is capable of forming a color-forming layer of the recording material, and a composition of a color-developing agent for a rewritable recording material.
    Type: Application
    Filed: February 1, 2010
    Publication date: November 24, 2011
    Inventors: Satoshi Kodama, Hiroshi Fujii, Tadashi Kawakami
  • Patent number: 7998900
    Abstract: A colorless or transparent composition comprises a charge-delocalization compound and a photoacid, wherein the photoacid generates an acid on irradiation or heating, thereby forming a colored change-transfer complex with said compound.
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: August 16, 2011
    Assignee: Datalase Ltd.
    Inventors: Christopher Anthony Wyres, Nazir Khan
  • Publication number: 20110136664
    Abstract: Diphenylsulfone bridged compounds of the general formula: (1) wherein n is an integer of 1 to 10. Further, there is disclosed a thermal recording material comprising a support and, superimposed thereon, a thermosensitive color forming layer containing a color forming substance for thermal recording consisting of any of the diphenylsulfone bridged compounds and a color forming substance consisting of a colorless or light-colored leuco dye. This thermal recording material excels in the storability, especially wet heat resistance and oil resistance, of image areas and further exhibits excellent characteristics in the storability, especially heat resistance, of undeveloped areas.
    Type: Application
    Filed: July 28, 2008
    Publication date: June 9, 2011
    Applicant: NICCA CHEMICAL CO., LTD.
    Inventors: Hajime Saito, Takeo Hasegawa
  • Publication number: 20110130279
    Abstract: Exemplary embodiments provide compositions and methods for an erasable medium that can include a photochromic composite containing a photochromic polymer dispersed in a polymer binder, a similar type polymer of a backbone portion of the photochromic polymer.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 2, 2011
    Applicant: XEROX CORPORATION
    Inventors: Gabriel IFTIME, Kentaro Morimitsu, Peter M. Kazmaier, Adela Goredema, Hadi K. Mahabadi
  • Publication number: 20110121557
    Abstract: Multi-layer articles capable of forming color images are provided. The articles include a multi-layer construction with at least two layers in which at least one of the layers includes a thermally activatable composition. The thermally activatable composition includes a non-linear light to heat converter composition and a color forming compound. Upon activation with a light source an image forms.
    Type: Application
    Filed: May 4, 2009
    Publication date: May 26, 2011
    Inventors: Pingfan Wu, Douglas A. Dunn, Dennis E. Vogel, Stanley C. Busman
  • 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
  • Publication number: 20110082035
    Abstract: Exemplary embodiments provide compositions and methods for making and using an erasable medium that can include a photochromic layer disposed over a substrate. The photochromic layer can include one or more photochromic molecule-polymer systems, wherein each of the one or more photochromic molecule-polymer systems can include a photochromic molecule covalently bonded within a polymer main chain, the photochromic molecule including one or more photochromic moieties (PM) linked together via a linker.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 7, 2011
    Applicant: XEROX CORPORATION
    Inventors: Kentaro MORIMITSU, Gabriel IFTIME, Peter M. KAZMAIER
  • Publication number: 20110053769
    Abstract: A thermal recording material having a thermally color-forming thermal recording layer and a protective layer which are formed on a substrate in this order, wherein the protective layer is a layer obtained by applying an aqueous coating liquid containing a polyvinyl alcohol, a crosslinking agent, a pigment, an Arrhenius acid and a volatile amine onto the thermal recording layer and drying the applied coating liquid.
    Type: Application
    Filed: September 29, 2008
    Publication date: March 3, 2011
    Inventors: Takao Masuda, Takahito Ochiai
  • Publication number: 20110053768
    Abstract: Disclosed herein in a preferred embodiment is a recording material comprising a substrate and a coating comprising at least 3 plies, wherein the outermost ply contains nanoparticles and the inner plies together contain at least one color former, at least one color developer, at least one absorber and at least one solubilizer, and no ply contains both a color former and a color developer. Also disclosed is a process for producing the recording material of the invention and also to a laser marking process wherein the recording material is irradiated with a laser.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 3, 2011
    Applicant: M-real Oyj
    Inventors: André Becker, Klaus Hoeffgen, Theo Pütz, Günther Röthel, Viktor Uerlings
  • Publication number: 20100227760
    Abstract: The present disclosure provides a reusable and reimageable medium including a substrate coated with a photochromic polymer. The photochromic polymer has a glass transition temperature ranging from 30° C. to 150° C., such as from about 30° C. to about 100° C., and the coated substrate converts to a colored state when both UV light and temperatures ranging from 30° C. up to 100° C. are applied to the coated substrate. The present disclosure also provides a method for producing and using the reusable and reimageable medium.
    Type: Application
    Filed: March 9, 2009
    Publication date: September 9, 2010
    Applicant: XEROX CORPORATION
    Inventors: Kentaro MORIMITSU, Tyler NORSTEN, Gabriel IFTIME, Peter M. KAZMAIER, Guerino SACRIPANTE
  • Publication number: 20100216635
    Abstract: An image-forming medium and methods for forming and imaging the medium are provided. The disclosed medium can be strongly colored under room illumination (or deliberate UV) and can be selectively discolored at an appropriate light wavelength to form an image. In one embodiment, the image-forming medium can include a substrate (e.g., a sheet of paper), a photochromic material incorporated with the substrate, and a photo-absorbing material incorporated with the photochromic material. Exemplary methods for using the image-forming medium to make a transient image can include first forming the image-forming medium by applying a coating solution containing photochromic material to the substrate or paper. The image-forming medium can have a medium color and can then be selectively exposed to a radiation through a mask to convert the photochromic material from a colored form to a colorless form and thus to form an image having a color contrast with its background.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 26, 2010
    Applicant: XEROX CORPORATION
    Inventors: Peter M. KAZMAIER, Eric Shrader, Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Fazilia Seker, Naveen Chopra
  • Publication number: 20100069241
    Abstract: To provide a thermosensitive recording medium including: a support; a thermosensitive recording layer composed mainly of a leuco dye and a developer, formed on a surface of the support; and at least two antibacterial agents which include a zirconium phosphate antibacterial agent and an imidazole antibacterial agent and which are internally contained in the thermosensitive recording medium.
    Type: Application
    Filed: September 14, 2009
    Publication date: March 18, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventor: Tohru KITANO
  • Publication number: 20100062935
    Abstract: The present invention presents a thermosensitive recording medium having excellent color development, image quality and preservation properties as well as excellent stamp receptivity, anti-scratching ability, printability and water blocking resistance. The present invention is a thermosensitive recording medium having a thermosensitive recording layer comprising at least a colorless or pale colored basic leuco dye and an electron accepting developing agent as a coating layer on a substrate, wherein at least an outermost layer among the thermosensitive recording layer and other optionally prepared coated layers contains rice starch particles.
    Type: Application
    Filed: March 14, 2008
    Publication date: March 11, 2010
    Inventors: Ken Takagi, Jun Makihara, Akihito Ogino, Kenji Hirai, Makoto Hasegawa, Shin Suzuki, Takeshi Hirose
  • Publication number: 20100048395
    Abstract: The invention provides a thermosensitive recording material having, on a support, a thermosensitive recording layer incuding an electron-donating dye precursor and an electron-accepting compound that makes the electron-donating dye precursor thermally develop a color, wherein the thermosensitive recording layer includes the electron-accepting compound in a ratio of from 5/1 to 20/1 by mass ratio with respect to the electron-donating dye precursor.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 25, 2010
    Applicant: FUJIFILM CORPORATION
    Inventor: Kunihiko OHGA
  • Publication number: 20100041551
    Abstract: The presently disclosed embodiments are directed to image forming mediums useful for reimageable and transient documents. More particularly, the embodiments pertain to an image forming medium comprising thermally gated photochromic materials comprising diarylethene (DAE) photochromes which avoid problems with unwanted reduction in color contrast due to background coloration.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Applicant: XEROX CORPORATION
    Inventors: Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Peter Kazmaier
  • Patent number: 7582405
    Abstract: Imaging layers, image recording media, and methods of preparation of each, are disclosed.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: September 1, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Publication number: 20090215622
    Abstract: The present invention provides a thermosensitive recording medium including a white plastic support, a thermosensitive recording layer containing a binder resin as a binding agent, a colorless or pale color leuco dye and a color developer for heat-developing the leuco dye, a protective layer, and a back layer containing an electron-conductive needle filler and an ion-conductive polymer, wherein the thermosensitive recording layer is disposed on the white plastic support, the protective layer is disposed on the thermosensitive recording layer, and the back layer is disposed on a side of the white plastic support opposite to the side where the thermosensitive recording layer is disposed.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 27, 2009
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shinji OKADA, Hiroshi Tohmatsu, Hideo Aihara, Hirokazu Watari
  • Patent number: 7560415
    Abstract: A reversible multicolor thermal recording medium which is free from fogging and has sharp contrast even after recording and erasing are performed repeatedly, and a recording method using the same are provided. A reversible multicolor recording medium is provided, which includes recording layers each containing a plurality of reversible thermal coloring compositions having different coloring tones, formed to be separated from and stacked on a surface direction of a supporting substrate; and the plurality of reversible thermal coloring compositions containing light-to-heat transforming materials which absorb infrared rays having different wavelength ranges to generate heat, respectively; wherein an absorption peak wavelength of the light-to-heat transforming material contained in the recording layers becomes the longest wavelength at the layer formed nearest the supporting substrate, and becomes a shorter wavelength as the layer is closer to the surface layer in the stacked order.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: July 14, 2009
    Assignee: Sony Corporation
    Inventors: Hisanori Tsuboi, Noriyuki Kishii, Kenichi Kurihara
  • Publication number: 20090176647
    Abstract: The present invention provides a heat-sensitive recording material having a support, a heat-sensitive color-developing layer containing a leuco dye and a developer, and a protective layer, the heat-sensitive color-developing layer and the protective layer being formed on the support, wherein carboxylic-acid-modified polyvinyl alcohol with a weight average degree of polymerization of 100 to 400 and a modification degree of 0.2 mol % to 1.0 mol % is used as a dispersing agent for dispersing the leuco dye.
    Type: Application
    Filed: March 12, 2008
    Publication date: July 9, 2009
    Inventors: Kunihiko HADA, Yoshikazu Kaneko, Michiyo Fukushima, Kazuyuki Uetake
  • Publication number: 20090170699
    Abstract: A reversible thermosensitive recording medium including an electronic information recording sheet having at least an electronic information recording element projecting from a surface thereof, a first sheet having a through hole into which the electronic information recording element can be inserted, and a second sheet having a cut-out portion capable of housing the entire electronic information recording sheet, wherein the second sheet houses in the cut-out portion the entire electronic information recording sheet, with being laid over the first sheet, and the electronic information recording element is inserted into the through hole.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicant: RICOH COMPANY, LTD
    Inventors: Tadafumi TATEWAKI, Hiroyuki Ina, Nobuyoshi Sugiyama
  • Patent number: 7538070
    Abstract: A thermochromic reimageable recording medium comprises a substrate and thermochromic composition comprising a photochromic material, a transition metal salt and a binder. The thermochromic composition changes color from a colorless state to a colored state upon application of heat. The thermochromic recording medium may be used to display a viewable image by applying heat to selected areas of the medium to form a desired image. The colored state is changeable or erasable back to the colorless state by exposure to visible light.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 26, 2009
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier, Kyra Ramirez
  • Publication number: 20090099018
    Abstract: Disclosed herein is a heat-sensitive recording material shows good barcode printability and provides printed images having an excellent milk resistance. The heat-sensitive recording material comprises a heat-sensitive recording layer contains 3,3?-diallyl-4,4?-dihydroxydiphenylsulfone and 1,2-di(methylphenoxy)ethane in a specific amount relative to the leuco dye, and contains a crosslinked diphenylsulfone-based compound in an specific ratio based on the total solid in the heat-sensitive recording layer.
    Type: Application
    Filed: February 28, 2008
    Publication date: April 16, 2009
    Applicant: OJI PAPER CO., LTD.
    Inventors: Masaharu Nojima, Takashi Takemura
  • Publication number: 20090075817
    Abstract: A thermosensitive recording material including a support, a thermosensitive recording layer composed mainly of a leuco dye and a developer, provided on one surface of the support, and a back layer provided on the other surface of the support, wherein the back layer contains an isobutylene-maleic anhydride copolymer ammonium salt, and at least one of an aziridine compound, and a cross-linked product of the isobutylene-maleic anhydride copolymer ammonium salt and the aziridine compound.
    Type: Application
    Filed: September 11, 2008
    Publication date: March 19, 2009
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hideo AIHARA, Ichiro Sawamura, Hiroshi Tohmatsu, Shinji Okada, Hirokazu Watari
  • Publication number: 20080269050
    Abstract: By printing a bar code (comprising dark and light regions) or parts of such a bar code with an ink containing a dye, which changes colour in the presence of an acid or a base to remove the contrast between the regions of the bar code, and a neutral compound which releases an acid or a base on exposure to energising radiation, a bar code can be produced that becomes unreadable after a pre-determined interval. This can be used as a time/temperature indicator to ensure that products, which might be perishable, associated with such a bar code are not used by the public.
    Type: Application
    Filed: September 14, 2006
    Publication date: October 30, 2008
    Applicant: SUN CHEMICAL CORPORATION
    Inventors: Farid Azizian, Michael William Leonard
  • Patent number: 7425523
    Abstract: A thermal transfer recording material contains at least one colorant represented by the following general formula (II), wherein R21 and R22 each represent a substituted or unsubstituted aliphatic group; R23 represents a substituent; n represents an integer of 0 to 4; when n is 2 or more, R23 is the same or different each other; R25 and R26 represent alkyl groups respectively; and at least one of R25 and R26 represents a secondary alkyl group.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: September 16, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Dai Ikemizu, Emiko Kataoka, Takatugu Suzuki, Kazuya Yoshida, Hiroyuki Yamashita
  • Publication number: 20080207444
    Abstract: The present invention provides coating compositions for marking substrates, which comprise a colour former in an amount of from 0.01 to 50%, a metal salt of a carboxylic acid in an amount of from 0.01 to 50%, a binder in an amount of from 1 to 80% and an organic solvent in an amount of from 1 to 99%, wherein each amount is by weight based on the weight of the composition. The present invention also provides a process for the preparation of the composition of the present invention, substrates coated with these compositions and a process for preparing a marked substrate using these compositions.
    Type: Application
    Filed: December 14, 2005
    Publication date: August 28, 2008
    Inventors: Karen O'Donoghue, Jonathan Campbell
  • Publication number: 20080125317
    Abstract: A method for data inscription in an acrylic polymer-based photochromic medium is provided in which the photochromic groups are bound to the polymeric matrix. The data is inscribed by irradiating small volume portion with an electromagnetic irradiation that causes a change in state of the photochromic groups from a first to a second state. Said volume portion is heated so as to cause an increase in temperature of said portion at the time of data inscription. The heating may be external or internal. Internal heating makes use of additives that dissipate heat, following their irradiation, to their immediate vicinity. Provided is also a novel acrylic polymer-based photochromic medium comprising said additives.
    Type: Application
    Filed: January 12, 2006
    Publication date: May 29, 2008
    Applicant: MemPile, Inc. c/o PHS Corporate Service, Inc., Suite
    Inventors: Ortal Alpert, Yair Salomon, Andrew N. Shipway
  • Publication number: 20080070781
    Abstract: An erasable image forming material is provided, which includes a binder resin, and a color former and a developer dispersed in the binder resin. The color former is amorphous.
    Type: Application
    Filed: July 19, 2007
    Publication date: March 20, 2008
    Inventors: Takeshi Gotanda, Satoshi Takayama, Kenji Sano, Yumiko Sekiguchi, Shinya Sakurada
  • Patent number: 7329630
    Abstract: Compositions and methods for production of color images having increased light stability and reduced browning are described. The color forming composition can include a leuco dye, an infrared absorber, and at least one of a stabilizer and an anti-fade agent. The color forming compositions can be stabilized such that less than about a 30% decrease in optical density occurs over a three year period. The stabilizers can include chroman, thiolane-nickel complexes, spiroindanes, while suitable anti-fade agents can include vitamin E, vitamin E analogs, astaxanthin, chroman, ascorbic acid, carotene, and mixtures thereof. The color forming compositions are ambient light stable and are useful in forming images on a wide variety of substrates such as optical disks.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: February 12, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Patent number: 7279264
    Abstract: There are described novel fluorescein dye compounds and imaging members and imaging methods utilizing the compounds. The fluorescein dye compounds exhibit a first color when in the crystalline form and a second color, different from the first color, when in the liquid, amorphous form.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: October 9, 2007
    Assignee: Zink Imaging, LLC
    Inventors: Kap-Soo Cheon, Peter K. Chu, Michael P. Filosa, Stephen J. Telfer
  • Patent number: 7270944
    Abstract: A composition, method, and system for recording an image. The system includes a multiphase imaging material in which energy is absorbed by an antenna material. The absorbed energy causes the reaction of an oxidizer and a leucozine dye.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: September 18, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Patent number: 7172991
    Abstract: An integrated system for individually labeling a recording medium at the time that digital information is recorded thereon, by recording write data with a digital recorder on the read/write surface of the CD/DVD and recording image data by inducing visible color change with a laser in laser sensitive materials on the opposite surface of the CD/DVD.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: February 6, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daryl E. Anderson, Makarand P Gore, Paul J McClellan
  • Patent number: 7146909
    Abstract: An image forming material, a lithographic printing plate precursor and a lithographic printing method, in which a color image with good visibility is obtained by laser exposure, are provided, wherein the image forming material and the lithographic printing plate precursor each comprising a support and a layer comprising a compound represented by formula (1) which changes from a colorless state to a colored state by the effect of heat; and a lithographic printing method comprising on-press development using the lithographic printing plate precursor:
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: December 12, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hidekazu Oohashi, Kazuto Kunita
  • Patent number: 7022823
    Abstract: The present invention relates to a diazonium salt represented by the following general formula (1) and a synthesizing method thereof, as well as a recording material using the diazonium salt. In general formula (1), R1 represents a hydrogen atom, an alkyl group or an aryl group. R2 represents an alkyl group or an aryl group. Each of R3, R4, R5 and R6 independently represents a hydrogen atom or a monovalent substituent. Here, at least one of R3, R4, R5 and R6 represents —N2+X?. X? represents an anion.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: April 4, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kimiatsu Nomura, Hisato Nagase, Yasuhiro Mitamura
  • Patent number: 6900158
    Abstract: A high-molecular weight gel having a leuco dye represented by the formula (L-1) as defined herein, connected thereto by covalent bond or single bond, and a high-molecular weight gel represented by the formula (R-1) as defined herein.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: May 31, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Katoh, Akinori Fujita
  • Patent number: 6890880
    Abstract: A heat-sensitive recording material includes a support having disposed thereon a heat-sensitive layer including microcapsules, which contain an achromic or hypochromic electron-donating dye precursor, and a developer, wherein the microcapsules contain at least one metal compound.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: May 10, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisao Yamada, Naoto Yanagihara, Kazumori Minami
  • 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: 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