Patents by Inventor Kaori Isaji

Kaori Isaji 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: 5698490
    Abstract: When the counter ion of hydrophilic cationic dyes is substituted with an organic anion including a sulfosuffinate anion such as diethylhexylsulfonate anion, an alkylbenzenesulfonate anion such as a dodecylbenzenesulfonate, an alkylsulfate anion such as a laurylsulfate anion, or a soap anion such as a laurylsulfate anion, the cationic dyes are imparted with hydrophobicity. An ink layer 3 containing the hydrophobic cationic dye is formed on a support 2 to provide a thermal transfer ink ribbon 10.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: December 16, 1997
    Assignee: Sony Corporation
    Inventors: Kengo Ito, Masanobu Hida, Kaori Isaji
  • Patent number: 5656759
    Abstract: When the counter ion of hydrophilic cationic dyes is substituted with an organic anion including a sulfosuffinate anion such as diethylhexylsulfonate anion, an alkylbenzenesulfonate anion such as a dodecylbenzenesulfonate, an alkylsulfate anion such as a laurylsulfate anion, or a soap anion such as a laurylsulfate anion, the cationic dyes are imparted with hydrophobicity. An ink layer 3 containing the hydrophobic cationic dye is formed on a support 2 to provide a thermal transfer ink ribbon 10.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 12, 1997
    Assignee: Sony Corporation
    Inventors: Kengo Ito, Masanobu Hida, Kaori Isaji
  • Patent number: 5589435
    Abstract: A sheet of the type which comprises a release base sheet and a thermal transfer image-receiving layer formed on the release base sheet and which is capable of releasing the thermal transfer image-receiving layer from the base sheet is described. The receiving layer is made of a dispersion, in a resin binder, of a layer compound capable of fixing cationic dyes through ion exchange reaction therewith. The receiving layer can be readily formed on a desired type of substrate by superposing the receiving layer on the substrate, after which the release base sheet is peeled off from the receiving layer. A thermal transfer image can be formed on the receiving layer by superposition with an ink ribbon containing a cationic dye and application of image information to the ink ribbon or by re-transfer of a cationic dye image from a printing paper. The thermal transfer image may be formed prior to the transfer of the receiving layer on the substrate.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 31, 1996
    Assignee: Sony Corporation
    Inventors: Kengo Ito, Kaori Isaji, Yoshio Fujiwara, Mitsuhiro Isogai, Masanobu Hida
  • Patent number: 5446012
    Abstract: A sheet of the type which comprises a release base sheet and a thermal transfer image-receiving layer formed on the release base sheet and which is capable of releasing the thermal transfer image-receiving layer from the base sheet is described. The receiving layer is made of a dispersion, in a resin binder, of a layer compound capable of fixing cationic dyes through ion exchange reaction therewith. The receiving layer can be readily formed on a desired type of substrate by superposing the receiving layer on the substrate, after which the release base sheet is peeled off from the receiving layer. A thermal transfer image can be formed on the receiving layer by superposition with an ink ribbon containing a cationic dye and application of image information to the ink ribbon or by re-transfer of a cationic dye image from a printing paper. The thermal transfer image may be formed prior to the transfer of the receiving layer on the substrate.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: August 29, 1995
    Assignee: Sony Corporation
    Inventors: Kengo Ito, Kaori Isaji, Yoshio Fujiwara, Mitsuhiro Isogai, Masanobu Hida