The Color Former Contains A Heterocyclic Oxygen Ring Patents (Class 106/31.21)
  • Patent number: 9777178
    Abstract: Reversible thermochromic and photochromic ink compositions and markers, pens or writing instruments that use them are herein disclosed.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: October 3, 2017
    Assignee: Chromatic Technologies, Inc.
    Inventors: Terrill Scott Clayton, Timothy J. Owen
  • Patent number: 8888906
    Abstract: A heat-sensitive color-developing composition containing a hydroxyquinoline compound having a methyl group and an acid anhydride compound represented by general formula (1): wherein ring A represents a substituted or unsubstituted aromatic hydrocarbon ring, and n represents an integer of 1 to 3, and a heat-sensitive recording material containing the composition in a recording layer.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: November 18, 2014
    Assignee: Yamamoto Chemicals, Inc.
    Inventors: Ryoji Yamaguchi, Toshihiro Masaoka, Keisuke Takuma
  • Publication number: 20130116644
    Abstract: The invention describes a color-developing composition that contains at least three major components: (1) a leuco dye or a combination of leuco dyes, (2) an color-developer or a combination of color-developers that can form colored complexes with the leuco dyes, and (3) a desensitizer to temporarily remove the effect of the developer so the leuco dye appears in its colorless form. An optional binder may be included so that the composition may be applied to a substrate as an ink. The ink composition may be applied to synthetic polymeric substrates and other substrates that are incorporated into absorbent articles or personal care products.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Inventors: Ning Wei, Xuedong Song, JinHo Ryu, JunMo Gil
  • Patent number: 8273822
    Abstract: The present invention pertains to a reversible thermochromic system comprising a ?-phenylvinylketone or a ?-phenyl polyacetylenyl ketone with at least one acidic hydrogen and a base and to a reversible thermochromic composition comprising the reversible thermochromic system and a carrier material and to novel substituted ?-phenylvinylketones or ?-phenyl polyacetylenyl ketones with at least one acidic hydrogen.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: September 25, 2012
    Assignee: BASF SE
    Inventors: Mirko Rossi, Graziano Zagnoni, Manuele Vitali, Dario Lazzari, Walter Fischer
  • 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
  • Publication number: 20070270310
    Abstract: In one aspect, a method includes directing electromagnetic radiation to a structure, the structure including a substrate, a first layer, and a marking composition between the substrate and the first layer. At least a portion of the electromagnetic radiation is transmitted through the first layer, and the structure is marked.
    Type: Application
    Filed: May 22, 2006
    Publication date: November 22, 2007
    Inventors: David H. Blank, Benjamin J. Brown, Michael P. Secord, James W. Foley
  • Publication number: 20070245925
    Abstract: A no-mess water-based ink including a composition including water, an organic solvent, a coloring agent dissolved in the organic solvent, an emulsifier and a thickening agent for use in conjunction with a specially treated substrate containing a color developer.
    Type: Application
    Filed: August 3, 2006
    Publication date: October 25, 2007
    Inventors: Jie Li, Leena Vadaketh, Jacqueline Aseng
  • Patent number: 6566302
    Abstract: A monophase solid solution comprising a plurality of color formers selected from the group consisting essentially of the fluoran type, phthalide type, phenoxazine type, phenothiazine type, rhodamine lactam type, leuco-auramine type, triphenylmethane type, spiropyran type, benzoxazine type, quinazoline type of color formers and mixtures thereof, preferably wherein the color forming materials are selected from the fluoran and phthalide type of color former and mixtures thereof.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: May 20, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James Philip Taylor, Michael Heneghan
  • Patent number: 6258747
    Abstract: A thermally sensitive recording medium having sufficient color developing density and which develops russet or wine red color. The recording medium incorporates a dye precursor which includes at least one red color developing leuco dye having a maximum absorption wavelength of 480 to 570 nm and at least one black color developing leuco dye with maximum absorption wavelengths at 420 to 480 nm and 550 to 640 nm. The color difference a* value of developed image of said thermally sensitive recording medium, measured according to JIS-Z-8729 is within the region of 0 to 50 and b* value is within the region of −15 to 10.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: July 10, 2001
    Assignee: Nippon Paper Industries Co Ltd
    Inventors: Yoshimi Midorikawa, Kaoru Hamada, Yoshihide Kimura, Tomoaki Nagai