Patents by Inventor Michihiro Matsuda

Michihiro Matsuda 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).

  • Sheet skew correcting apparatus and image forming apparatus
    Patent number: 7063472
    Abstract: A sheet skew correcting apparatus, incorporated in a printer or the like to correct a phenomenon of obliquely feeding a sheet called skewing. The apparatus includes a transporting path in which the sheet is transported, a pair of registration rollers, a pair of timing rollers disposed upstream from the registration rollers, and a paper guide having a first and a second curved portion and constituting the transporting path. When a sheet fed into the transporting path abuts against a contact point of a registration roller pair, the sheet is further transported by an arbitrary distance in the sheet transporting direction. First and second curves are then formed in the sheet in the first and second curved portions. Then the registration roller pair is rotated in the direction opposite to the sheet transporting direction, the front end of the sheet uniformly abuts against the contact point of the registration roller pair to correct skew.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: June 20, 2006
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Michihiro Matsuda, Yasushi Hashimoto, Shingo Takai, Hiroshi Suzuki
  • Sheet skew correcting apparatus and image forming apparatus
    Publication number: 20030044217
    Abstract: A sheet skew correcting apparatus, incorporated in a printer or the like to correct a phenomenon of obliquely feeding a sheet called skewing. The apparatus includes a transporting path in which the sheet is transported, a pair of registration rollers, a pair of timing rollers disposed upstream from the registration rollers, and a paper guide having a first and a second curved portion and constituting the transporting path. When a sheet fed into the transporting path abuts against a contact point of a registration roller pair, the sheet is further transported by an arbitrary distance in the sheet transporting direction. First and second curves are then formed in the sheet in the first and second curved portions. Then the registration roller pair is rotated in the direction opposite to the sheet transporting direction, the front end of the sheet uniformly abuts against the contact point of the registration roller pair to correct skew.
    Type: Application
    Filed: August 21, 2002
    Publication date: March 6, 2003
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Michihiro Matsuda, Yasushi Hashimoto, Shingo Takai, Hiroshi Suzuki