Patents by Inventor Seiichirou Yamamoto

Seiichirou Yamamoto 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).

  • Transfer printer with ribbon transmission drive gear
    Patent number: 5135315
    Abstract: A transfer printer includes a platen drive mechanism for rotating a platen roller facing a print head, and a paper feed mechanism for feeding a paper sheet passing between the platen roller and the head. A ribbon supply device is driven through a transmission mechanism by the drive power of the feed mechanism. The transmission mechanism has a roller holder supporting a transmission gear and arranged to be movable between a transmission position wherein the transmission gear engages an interlocking gear of the feed mechanism and an input gear of the ribbon supply device and a release position wherein the transmission gear is disengaged from the input gear so as to interrupt the power transmission. The roller holder is urged by a spring toward the transmission position, and restricted an excessive movement to the transmission position so that the transmission gear is in mesh with the input gear with a suitable backlash.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: August 4, 1992
    Assignee: Tokyo Electric Co., Ltd.
    Inventors: Satoshi Kitahara, Seiichirou Yamamoto