Patents by Inventor Fumiko Koyama

Fumiko Koyama 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).

  • Perfecting press device
    Publication number: 20060283343
    Abstract: A double-side printing system where printing is made on both sides of a printing paper has an image density calculator which calculates the image densities of image data of the front side and image data of the back side, and a printing density reducer which reduces both the printing densities for printing the image data of the front side and the image data of the back side when at least one of the image densities of the image data of the front side and the image data of the back side is not smaller than a predetermined value.
    Type: Application
    Filed: April 5, 2004
    Publication date: December 21, 2006
    Inventors: Fumiko Koyama, Katsumi Ohno
  • Stencil sheet unit and method of making print stencil using the same
    Patent number: 5992316
    Abstract: A stencil sheet unit includes a stencil sheet having a rectangular area and a mount paper substantially equal in configuration to the stencil sheet, wherein the stencil sheet is adhered in part onto the mount paper by an adhesive portion provided between the stencil sheet and the mount paper, wherein an area of the adhesive portion is smaller than half of the rectangular area of the stencil sheet, and a printing-preparation is made on a portion other than the adhesive portion of the stencil sheet.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: November 30, 1999
    Assignee: Riso Kagaku Corporation
    Inventors: Satoru Komata, Fumiko Koyama