Patents by Inventor Eisaku Mutoh

Eisaku Mutoh 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: 5071269
    Abstract: In a wire-dot print head which comprises print elements arranged in a ring, each having an electromagnet formed of a core and a coil, and in which the electromagnets are divided into a plurality of blocks so that each block has a plurality of electromagnets, and a common current conduction control element is provided for each block and used to control current through the coils of the electromagnets in the block, the electromagnets of each of at least some of the blocks are disposed so as not to be physically adjacent to each other. Because of the above arrangement, currents through the coils due to magnetic interference between the adjacent electromagnets is reduced and power consumption is reduced.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: December 10, 1991
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Tetsuhiro Yamada, Tatsuya Koyama, Eisaku Mutoh