Patents by Inventor Shunichi Ohara

Shunichi Ohara 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).

  • Double feed sensing device, double feed determining method and image forming apparatus
    Publication number: 20070018383
    Abstract: The invention provides a double feed sensing device capable of sensing double feed of paper sent out for the first time. The double feed sensing device includes a thickness sensing unit for sensing thickness of cut paper conveyed, a rigidity sensing unit for sensing bending rigidity of the conveyed paper, and a double feed determining unit for comparing a value of the thickness of the paper sensed by the thickness sensing unit and a value of the bending rigidity of the paper sensed by the rigidity sensing unit with threshold values of thickness and rigidity of the paper set based on values of thickness and bending rigidity of one sheet of the paper and values of thickness and bending rigidity of stacked sheets of the paper, so as to determine whether the paper is double-fed or not.
    Type: Application
    Filed: July 10, 2006
    Publication date: January 25, 2007
    Applicant: Ricoh Printing Systems, Ltd.
    Inventors: Shunichi Ohara, Kunio Satou, Masuo Furutono