Patents by Inventor Reiko Nagai

Reiko Nagai 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).

  • Residual recording material amount detector for laser printer
    Patent number: 5635972
    Abstract: A residual recording material amount detector for a laser printer of the present invention is provided with a continuous dot number detecting device for counting a number of continuous video signals for modulating a laser light source, a toner consumption data storage device for storing a toner consumption per number of continuous dots, and an integrated toner consumption storage device implemented by a nonvolatile memory for storing an integrated value of toner consumptions at the time of forming a series of dots calculated by the continuous dot number detecting device and the toner consumption data storage device. According to the residual recording material amount detector for the laser printer of the present invention, the toner consumption can be detected correctly irrespective of the kind of data to be printed.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: June 3, 1997
    Assignee: Seiko Epson Corporation
    Inventors: Akira Maruyama, Hiroshi Niki, Reiko Nagai