Patents by Inventor Takemasa Ryo

Takemasa Ryo 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).

  • Image forming apparatus including belt traveling unit which detects drifiting of belt postion
    Patent number: 7844207
    Abstract: A belt traveling unit includes an endless belt, a drive roller and a correction roller, a driving unit, a correction unit, a contact member, a position detector and a regulating member. The endless belt is spanned between a plurality of rollers. The driving unit rotates the drive roller to drive the belt. The correction unit adjusts a tilt angle of the correction roller to correct drifting of the belt in the width direction thereof. The contact member is rotatable in conjunction with traveling of the belt in the width direction thereof. The position detector detects a position of the contact member to detect a position of the belt in the width direction thereof. The regulating member is located at a position where the position detector does not misdetect the position of the belt when the contact member rotates.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: November 30, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Takemasa Ryo, Satoru Tao, Shinya Tomita
  • IMAGE FORMING APPARATUS INCLUDING BELT TRAVELING UNIT WHICH DETECTS DRIFITING OF BELT POSTION
    Publication number: 20080019736
    Abstract: A belt traveling unit includes an endless belt, a drive roller and a correction roller, a driving unit, a correction unit, a contact member, a position detector and a regulating member. The endless belt is spanned between a plurality of rollers. The driving unit rotates the drive roller to drive the belt. The correction unit adjusts a tilt angle of the correction roller to correct drifting of the belt in the width direction thereof. The contact member is rotatable in conjunction with traveling of the belt in the width direction thereof. The position detector detects a position of the contact member to detect a position of the belt in the width direction thereof. The regulating member is located at a position where the position detector does not misdetect the position of the belt when the contact member rotates.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 24, 2008
    Inventors: Takemasa Ryo, Satoru Tao, Shinya Tomita