Patents by Inventor Haruhiko Kotoh

Haruhiko Kotoh 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: 4367480
    Abstract: A head for an ink-on-demand type ink jet printer includes two laterally offset, linear rows of ink nozzles, said nozzle rows being linearly offset for producing alternate dots of a continuous printed line of dots. Interconnected chambers and channels, formed in opposite surfaces of a central plate, are closed by coverplates to provide pressure chambers and nozzle ducts. Individual piezoelectric elements externally affixed to the coverplates in registry with the pressure chambers, when driven, locally deform the coverplate to drive ink from the associated nozzles. Ducts and chambers in one surface are not in registry with the ducts and chambers of the opposite surface, and the lateral offset between rows is less than the printed-character spacing.
    Type: Grant
    Filed: January 9, 1981
    Date of Patent: January 4, 1983
    Assignees: Kabushiki Kaisha Suwa Seikosha, Shinshu Seiki Kabushiki Kaisha
    Inventor: Haruhiko Kotoh