Patents by Inventor James F. Onthank

James F. Onthank 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).

  • Apparatus for assisting manual placement of an original document on an exposure platen of copier
    Patent number: 5563685
    Abstract: A system for assisting manual placement of odd-shaped original documents on the exposure platen of a copier or scanner includes a detection device disposed on an edge of the platen. The device includes a light source emitting a light beam substantially parallel to a surface of the platen, and a photosensor adapted to detect light resulting from the reflection of the light beam by an object on the surface of the platen. A main focus direction of the light source and a main focus direction of the photosensor intersect at a predetermined position on the surface of the platen.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: October 8, 1996
    Assignee: Xerox Corporation
    Inventor: James F. Onthank