Patents by Inventor Koichi Tomura

Koichi Tomura 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: 4305082
    Abstract: An electric recording system is a novel recording system using an electric heat recording sheet comprising an electric conductive layer and an electric resistant layer, and heating the electric resistant layer by feeding a signal current to the recording sheet by contacting an electrode needle with the recording sheet and recording symbols or figures on the recording medium (e.g., commercial thermo-sensitive paper) through the electric conductive layer.In the other embodiment of the electric heat recording sheet, an electric resistant layer is formed on one surface of an electric conductive layer and an ink layer is formed on the rear surface of the electric conductive layer whereby heat is transferred from the electric resistant layer to print shape image by printing a part of the ink layer on the recording medium, such as a regular paper.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: December 8, 1981
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hideaki Kusakawa, Kenzo Takahashi, Koichi Tomura, Masaru Ohnishi, Kumiko Nakajima
  • Patent number: 4010031
    Abstract: A photosensitive plate includes a transparent electrode layer, a transparent carrier blocking layer of polyvinyl carbazole and a P type photoconductive layer superposed on one another and opposed to a dielectric recording medium with a gap therebetween. While a recording voltage is applied across the electrode layer and recording medium with positive polarity being imparted to the electrode layer, an imaging light irradiates the photoconductive layer to transfer a corresponding electrostatic latent image formed on that layer to the recording medium across the gap. For an N type photoconductive layer, a negative polarity is imparted to the electrode layer.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: March 1, 1977
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaru Onishi, Koichi Tomura