Patents by Inventor Takeya Uehara

Takeya Uehara 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).

  • Burning damage protecting apparatus and method for a printing head in a printer
    Patent number: 5302033
    Abstract: A burning damage protecting apparatus and method for a printing head in a printer comprising a printing head actuating circuit having a driver and a coil, a headpin-driver actuating electric power source which is connected to the printing head actuating circuit, a voltage monitor connected to the headpin-driver actuating electric power source, and a micro processing unit connected to each of the printing head actuating circuit, the headpin-driver actuating electric power source, and the voltage monitor; in which, the micro processing unit turns on the headpin-driver actuating electric power source for a first predetermined short time and subsequently turns it off immediately after the printer is turned on, and measures a voltage based on a signal fed from the voltage monitor at the timing the headpin-driver actuating electric power source is turned off, and then measures a voltage in the same manner as above measurement after a second predetermined short time has elapsed, still further judges whether the driv
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: April 12, 1994
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Hisayoshi Matsumoto, Takeya Uehara