Patents by Inventor Tanuma Jiro

Tanuma Jiro 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).

  • Wire-dot impact printer with head gap adjustment responsive to measured wire movement
    Patent number: 5078517
    Abstract: An interval between a wire-dot printing head and a printing medium in a wire-dot impact printer, wherein the wire-dot printing head is provided with a plurality of printing wires which strike against the printing medium, is adjustably controlled by an interval adjustment device and a control device. Displacements of the printing wires are detected when they are operated, and the interval between the wire-dot printing head and the printing medium is adjusted appropriately as a function of the resultant value of such detection. It is possible to adjust the interval between the wire-dot printing head and the printing medium in a short time so that the printing operation can be carried out a high speed and with high quality.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: January 7, 1992
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Kikuchi Hiroshi, Tanuma Jiro, Ishimizu Hideaki, Komori Chichiro