Patents by Inventor Shigetomo Tsujihata

Shigetomo Tsujihata 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).

  • Ink composition, image forming method and printed article
    Publication number: 20070004823
    Abstract: Disclosed are an ink composition comprising at least a colorant (a) and a polymer (b) having a heterocyclic moiety forming a colorant, an image forming method including applying the ink composition to a recording medium by printing and curing the ink composition, and a printed article produced by curing the ink composition.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 4, 2007
    Inventor: Shigetomo Tsujihata
  • Ink composition, inkjet recording method using the same, and printed material
    Publication number: 20060194029
    Abstract: An ink composition containing (a) a polymerizable compound, (b) a pigment, and (c) a graft polymer having, as a polymerization unit, a polymerizable oligomer having an ethylenically unsaturated double bond at least at a terminal thereof. The graft polymer (c) preferably contains, as a polymerization unit, a polymerizable oligomer having a number-average molecular weight of 1000 to 20000 and having a (meth)acryloyl group at a terminal thereof.
    Type: Application
    Filed: February 24, 2006
    Publication date: August 31, 2006
    Inventor: Shigetomo Tsujihata
  • Recording medium
    Publication number: 20040241347
    Abstract: The present invention provides a recording medium including a recording layer on a substrate, wherein the recording layer includes a polymer that has a thioether bond, has a sulfur equivalent of no less than 1.2 meq/g, and has an inorganic/organic ratio (I/O value) represented in an organic-inorganic conceptional diagram of no less than 0.5. According to the invention, the recording medium may be an ink jet recording medium, in which the recording layer is an ink receiving layer.
    Type: Application
    Filed: May 26, 2004
    Publication date: December 2, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Shigetomo Tsujihata, Masanobu Takashima, Shinichiro Serizawa
  • Ink jet recording medium and ink jet recording method
    Publication number: 20040166252
    Abstract: An ink jet recording medium containing a support and an ink receiving layer on the support, in which the ink receiving layer includes at least a complex formed from a metal with a valence of two or more and an acidic group-containing compound having a substituent group containing a nitrogen atom, an oxygen atom or a sulfur atom. The acidic group-containing compound is preferably a compound represented by the following general formula (I).
    Type: Application
    Filed: December 5, 2003
    Publication date: August 26, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Masanobu Takashima, Shigetomo Tsujihata
  • Cationic polymer and inkjet recording sheet
    Patent number: 6743850
    Abstract: Provided are a new cationic polymer and an inkjet recording sheet exhibiting a superior printing density of an image without lowering ink receptivity. A cationic polymer represented by the following general formula (A): An inkjet recording sheet, that has, on a substrate, a colorant-accepting layer containing cationic polymer modified inorganic pigment particles, which are obtained by bonding inorganic pigment particles to a cationic polymer having, at its terminal, a group that can be bonded to the inorganic pigment particles.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: June 1, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kousaku Yoshimura, Ryoichi Nakano, Shigetomo Tsujihata
  • Ink jet recording sheet
    Publication number: 20040101640
    Abstract: The present invention provides ink jet recording sheets comprising a colorant receiving layer on a substrate, the colorant receiving layer comprising fine particles, a water soluble resin, and a cationic resin including a unit represented by the following formula (1):
    Type: Application
    Filed: November 19, 2003
    Publication date: May 27, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Shigetomo Tsujihata, Ryoichi Nakano
  • New cationic polymer and inkjet recording sheet
    Publication number: 20030118791
    Abstract: Provided are a new cationic polymer and an inkjet recording sheet exhibiting a superior printing density of an image without lowering ink receptivity.
    Type: Application
    Filed: October 24, 2002
    Publication date: June 26, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Kousaku Yoshimura, Ryoichi Nakano, Shigetomo Tsujihata