Patents by Inventor Tatsumi Tsuboki

Tatsumi Tsuboki 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).

  • Printer
    Patent number: 6336758
    Abstract: A printer wherein a drive roller of a pair of sheet discharge rollers is made of rubber and a driven roller of the pair of sheet discharge rollers is made of synthetic resin; the leading end of a sheet is guided so as to be abutted against the drive roller earlier than the driven roller; the sheet that is in the course of being discharged is guided by a sheet discharge tray so as to come in slidable contact with an edge portion that is on a print head side of a sheet discharge opening. As a result, the printer can provide satisfactory printing conditions quickly with a simple structure and reduce noise leaking from the sheet discharge opening.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: January 8, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Ishida, Shigeki Mizuno, Kenjiro Murakami, Toshikazu Kotaka, Tatsumi Tsuboki, Motoyuki Niimura, Norio Horaguchi, Yoshiaki Nakayama
  • Printer having noise noise reduction structure
    Patent number: 5913626
    Abstract: A printer wherein a drive roller of a pair of sheet discharge rollers is made of rubber and a driven roller of the pair of sheet discharge rollers is made of synthetic resin; the leading end of a sheet is guided so as to be abutted against the drive roller earlier than the driven roller; the sheet that is in the course of being discharged is guided by a sheet discharge tray so as to come in slidable contact with an edge portion that is on a print head side of a sheet discharge opening. As a result, the printer can provide satisfactory printing conditions quickly with a simple structure and reduce noise leaking from the sheet discharge opening.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: June 22, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Ishida, Shigeki Mizuno, Kenjiro Murakami, Toshikazu Kotaka, Tatsumi Tsuboki, Motoyuki Niimura, Norio Horaguchi, Yoshiaki Nakayama
  • Printer
    Patent number: 5478162
    Abstract: A printer main body is provided having a print section therein for printing and a sheet feed inlet through which paper is supplied to the print section. An automatic sheet feeder is releasably mountable substantially at position for releasably mounting a manual sheet insertion guide so that each can feed paper through the sheet feed inlet. The manual sheet insertion guide is also releasably mountable on the automatic sheet feeder, preferable at an angle at which sheets can be fed through said sheet feed inlet.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: December 26, 1995
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiaki Nakayama, Takeo Kishida, Tatsumi Tsuboki