Patents by Inventor Ikuo Kurashima

Ikuo Kurashima 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).

  • Control circuit for heat fixing device for use in an image forming apparatus
    Patent number: 4928055
    Abstract: A control circuit for heat fixing device for use in an image forming apparatus is disclosed. The control circuit comprises device for detecting a power source voltage, device for detecting zero-crossing points of the power source voltage, device for determining frequency of the source voltage from the detected zero-crossing points, device for determining a power supplying time based on the detected power supply voltage and the power source frequency, device for controlling the power supply to a load based on the determined power supply line, in such a manner that a given power is automatically applied to the load against the change or fluctuation of the power supply source.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: May 22, 1990
    Assignee: Kentek Information Systems, Inc.
    Inventors: Shozo Kaieda, Ikuo Kurashima, Hideo Okazima, Jun Mai