Patents by Inventor Katsunori Hiroishi

Katsunori Hiroishi 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).

  • Patent number: 7479470
    Abstract: The objects of the present invention are to provide a thermal transfer receiver adapted to form transferred images excellent in solvent resistance and superior in wear resistance, a method for producing the thermal transfer receiver, a method for recording an image, and a recorded image. The objects may be attained by the thermal transfer receiver which comprises a support and a receiving layer disposed on the support, and the receiving layer contains a polyethyleneimine derivative, a thermoplastic resin, and a crosslinker.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: January 20, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Katsunori Hiroishi, Shigeru Miyajima
  • Patent number: 7081284
    Abstract: A thermal transfer recording medium is provided wherein the thermal transfer recording medium has a substrate; a separation layer on the substrate, wherein the separation layer contains a resin and a wax; and an ink layer on the separation layer, wherein the ink layer contains a colorant and a metal salt of an ethylene-methacrylic acid copolymer, and, optionally, one or more diols or diol derivatives containing an acetylene group, a thermal transfer recording method using the medium, and a recorded medium and recorded label prepared therefrom.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: July 25, 2006
    Assignee: Ricoh Company, Ltd.
    Inventor: Katsunori Hiroishi
  • Publication number: 20060046003
    Abstract: The objects of the present invention are to provide a thermal transfer receiver adapted to form transferred images excellent in solvent resistance and superior in wear resistance, a method for producing the thermal transfer receiver, a method for recording an image, and a recorded image. The objects may be attained by the thermal transfer receiver which comprises a support and a receiving layer disposed on the support, and the receiving layer contains a polyethyleneimine derivative, a thermoplastic resin, and a crosslinker.
    Type: Application
    Filed: August 3, 2005
    Publication date: March 2, 2006
    Inventors: Katsunori Hiroishi, Shigeru Miyajima
  • Patent number: 6787203
    Abstract: A thermal transfer recording medium including at least a substrate; a separation layer located overlying the substrate; and an ink layer located overlying the separation layer, wherein the separation layer includes at least a wax including a polyethylene wax, and wherein the ink layer includes at least a thermoplastic saturated polyester resin having a hydroxyl value of from 20 to 60 mgKOH/g; and an oxidized polyethylene having an acid value not greater than 5 mgKOH/g.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: September 7, 2004
    Assignee: Ricoh Company Limited
    Inventors: Katsunori Hiroishi, Keiichi Shiokawa, Takayuki Sasaki
  • Publication number: 20040162219
    Abstract: A thermal transfer recording medium is provided wherein the thermal transfer recording medium has a substrate; a separation layer on the substrate, wherein the separation layer contains a resin and a wax; and an ink layer on the separation layer, wherein the ink layer contains a colorant and a metal salt of an ethylene-methacrylic acid copolymer, and, optionally, one or more diols or diol derivatives containing an acetylene group, a thermal transfer recording method using the medium, and a recorded medium and recorded label prepared therefrom.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 19, 2004
    Inventor: Katsunori Hiroishi
  • Publication number: 20030054144
    Abstract: A thermal transfer recording medium including at least a substrate; a separation layer located overlying the substrate; and an ink layer located overlying the separation layer, wherein the separation layer includes at least a wax including a polyethylene wax, and wherein the ink layer includes at least a thermoplastic saturated polyester resin having a hydroxyl value of from 20 to 60 mgKOH/g; and an oxidized polyethylene having an acid value not greater than 5 mgKOH/g.
    Type: Application
    Filed: August 20, 2002
    Publication date: March 20, 2003
    Inventors: Katsunori Hiroishi, Keiichi Shiokawa, Takayuki Sasaki
  • Patent number: 5482911
    Abstract: A thermosensitive recording material having a support and a thermosensitive coloring layer formed on the support, capable of inducing color development by the application of heat thereto is disclosed, the stiffness of the thermosensitive recording material in the lengthwise direction thereof in accordance with JIS-P-8125 being less than 0.45 exp.sup.0.018x (gf.multidot.cm) wherein x represents the thickness (.mu.m) of the recording material measured in accordance with JIS-P-8118, provided that the lengthwise direction of the recording material is (i) a machine direction in which cellulose fiber contained in a natural material for use in the support is oriented, or (ii) a plane direction of the recording material when a synthetic material is used for the support.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 9, 1996
    Assignee: Ricoh Company, Ltd.
    Inventors: Katsunori Hiroishi, Norio Kurisu, Hideo Aihara