Patents by Inventor Chiaki Yagi

Chiaki Yagi 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 method and circuit for transfer current, and printer having the control circuit
    Patent number: 6192204
    Abstract: It is an exemplified object of the present invention to provide a transfer-current control circuit that may reduce the smaller number of current control circuits and wires than the conventional while maintaining the controllable number of currents. The present invention divides the transfer output circuit into main and auxiliary controller modules. The main controller module has a configuration similar to the conventional transfer output circuit. The auxiliary controller module provides the same number of current control circuits as the number of input signal lines. The main controller module is connected to the auxiliary controller module in a wired-OR manner. A method of controlling the transfer-current control circuit based on first and second parameters forms part of the invention.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: February 20, 2001
    Assignee: Fujitsu Limited
    Inventors: Chiaki Yagi, T. Nakashima