Patents Examined by Joseph Muncuso
  • Specific document discriminating apparatus and image reading apparatus using it therein
    Patent number: 5602939
    Abstract: The present invention provides an invisible light image detecting means for detecting an invisible light region image formed by using colorless paint in an invisible light region, and a discriminating means for discriminating a general document from a specific one by using the image data detected by said invisible light image detecting means, thus discrimination between a general document and a specific one being executed accurately and without fail.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: February 11, 1997
    Assignee: Richo Company, Ltd.
    Inventors: Tadato Hashiguchi, Takeshi Ukai