Patents by Inventor Tooru Toida

Tooru Toida 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).

  • Electrostatic recording method and apparatus by doubly controlling ion flow
    Patent number: 4255043
    Abstract: After uniformly charging one insulator side of an insulator mesh the other side of which is subjected to electroconductive treatment, the ion flow controlled by recording signals is irradiated for a short period of time on the insulator mesh to obtain a charge distribution wherein the charge on the insulator side is neutralized corresponding to the dots to be recorded. Via mesh apertures which have been freed from the charge by neutralization, the ion flow is irradiated for a time far longer than the above-said short time on an insulating recording substrate, to obtain thereon an electrostatic latent image having an amplified charge distribution.
    Type: Grant
    Filed: July 12, 1979
    Date of Patent: March 10, 1981
    Assignee: Nippon Telegraph and Telephone Public Corporation
    Inventors: Yasushi Hoshino, Tooru Toida, Yukio Tokunaga, Kazuyoshi Tateishi, Rikuo Takano