Patents by Inventor Daisuke Ishibashi

Daisuke Ishibashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Photocurable ink-jet ink, ink-jet image forming method and ink-jet recording apparatus using the same
    Publication number: 20050140765
    Abstract: A photocurable ink for ink-jet printing, including: a photopolymerizable compound; a pigment; and a dispersing agent, wherein the photopolymerizable compound is a radical polymerizable compound; an amine value of the pigment (AMp) is larger than an acid value of the pigment (ACp); and an acid value of the dispersing agent (ACd) is larger than an amine value of the dispersing agent (AMd).
    Type: Application
    Filed: December 17, 2004
    Publication date: June 30, 2005
    Inventors: Satoshi Masumi, Daisuke Ishibashi
  • Active ray curable ink-jet composition, image forming method using the same, and ink-jet recording apparatus
    Publication number: 20050080153
    Abstract: An active ray curable ink-jet ink composition comprising: (i) a colorant; and (ii) a set of (I) or a set of (II), wherein the set of (I) contains: (a) a photopolymerizable alicyclic epoxy compound; and (b) a diol compound contained in a specific amount; and the set of (II) contains: (a) a photopolymerizable oxetane compound; (b) a photopolymerizable epoxy compound; and (c) a diol compound contained in a specific amount.
    Type: Application
    Filed: October 1, 2004
    Publication date: April 14, 2005
    Inventors: Satoshi Masumi, Daisuke Ishibashi
  • Ink and ink-jet recording method using the same
    Publication number: 20050045062
    Abstract: An ink containing water, a water-soluble organic solvent and a colorant, wherein the ink exhibits a (? cos ?)1/2 value of 4 to 6, and satisfies Formula (I): 0.3?((?? cos ??)1/2/(? cos ?)1/2)?0.85, wherein ? represents a surface tension (mN/m) of the ink upon initial exposure to atmospheric conditions, ? represents an initial contact angle of the ink with respect to plain paper upon initial exposure to atmospheric conditions; and ?? represents a surface tension (mN/m) of the ink after standing for one hour at 40° C. and relative humidity of 2 percent, and ?? represents an initial contact angle of the ink with respect to plain paper after standing for one hour at 40° C. and relative humidity of 2 percent.
    Type: Application
    Filed: August 19, 2004
    Publication date: March 3, 2005
    Applicant: Konica Minolta Holdings, Inc.
    Inventors: Yuki Ogasawara, Akihiko Takeda, Daisuke Ishibashi
  • Ink-jet ink, ink-jet recording method and recorded imaging material using thereof
    Publication number: 20040003754
    Abstract: An ink-jet ink comprising water, a water-soluble organic solvent and a water-soluble dye, wherein the water-soluble dye is an anthrapyridone compound represented by Formula (1) or Formula (2): 1
    Type: Application
    Filed: June 16, 2003
    Publication date: January 8, 2004
    Inventors: Daisuke Ishibashi, Emi Takayama, Michiko Ohkubo
  • Method for forming color image
    Patent number: 6168892
    Abstract: A color image forming method is disclosed, comprising applying additive color mixing to a subtractive color mixture to perform color correction. Specifically, a fluorescent substance exhibiting emission in the visible light wavelength region, which is used for the additive color mixing, is mixed with a compound having an absorption in the visible light wavelength region.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: January 2, 2001
    Assignee: Konica Corporation
    Inventors: Noriko Ohara, Hiroshi Kita, Masayuki Ushiku, Daisuke Ishibashi, Hisatake Okada
  • Ink jet recording ink and recording method employing the same
    Patent number: 5753017
    Abstract: A recording method comprising the step of ejecting an ink jet recording ink on an ink receiving material using an ink jet printer, the ink comprising a dye represented by the following Formula (1): ##STR1##
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: May 19, 1998
    Assignee: Konica Corporation
    Inventors: Akira Onodera, Hidetaka Ninomiya, Hidenobu Ohya, Daisuke Ishibashi, Tawara Komamura, Katsunori Katoh, Tatsuo Tanaka, Hitoshi Morimoto