Patents by Inventor Hitoshi H. S. Saito

Hitoshi H. S. Saito 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).

  • Heat transfer recording process
    Patent number: 5250495
    Abstract: A heat transfer recording process which performs dotwise printing by means of a dotwise heating means. The process includes the use of a heat transfer sheet comprising a lubricating layer provided on one surface of a substrate film and a dye layer provided on the other surface of the substrate film, and an image-receiving sheet comprising a substrate film and an image-receiving layer formed thereon. The dynamic frictional coefficient at nonprinting between the dye layer of the heat transfer sheet and the image-receiving surface of the image-receiving sheet is within the range of 0.1-0.6.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: October 5, 1993
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Hitoshi H. S. Saito, Masaki M. K. Kutsukake, Mineo M. Y. Yamauchi, Minoru M. F. Furuse
  • Heat transfer sheet
    Patent number: 5130293
    Abstract: A heat transfer sheet comprising a lubricating layer provided on one surface of a substrate film and a dye layer formed on the other surface, wherein the elastic modulus in at least one of the sub-scanning direction (MD) and the main scanning direction (TD) in said heat transfer sheet is 280 kg/mm.sup.2 or more, and the elastic modulus ratio MD/TD in the sub-scanning direction (MD) and the main scanning direction (TD) is within the range of from 0.8 to 1.3.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: July 14, 1992
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Hitoshi H. S. Saito, Masaki M. K. Kutsukake, Mineo M. Y. Yamauchi, Minoru M. F. Furuse
  • Heat transfer sheet
    Patent number: 5036041
    Abstract: A heat transfer sheet including at least a dye layer of cyan color formed on the surface of a substrate sheet, the dye contained in said dye layer including a mixture of at least two kinds of cyan dyes, one of the cyan dyes which has a maximum absorption on the shortest wavelength side being a cyan dye having absorption characteristics with a narrow absorption width.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: July 30, 1991
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Jumpei J. K. Kanto, Hitoshi H. S. Saito, Hiroshi H. E. Eguchi, Masayuki M. N. Nakamura