Patents by Inventor Rolf Roschlein

Rolf Roschlein 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).

  • Print head for a dot matrix ink printer
    Patent number: 4575736
    Abstract: A print head for an ink printer is provided with an ink reservoir which is arranged near a plane transversely intersecting the print jet opening. Thereby it is possible to bring the print head into various inclined positions without interfering with the ink feed.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: March 11, 1986
    Assignee: Nixdorf Computer AG
    Inventors: Rolf Roschlein, Heinz Schulte
  • Ink jet filtered-chamber print head
    Patent number: 4514743
    Abstract: In a piezoelectrically-driven printing head for a dot-matrix ink printer, the ink canals (11) have a funnel-shaped enlargement (19) connected through a filter (18) to a common ink reservoir (16). The enlargements (19) increase the ink current cross-section in the area of the filter (18) and thereby increase the ink flow rate.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: April 30, 1985
    Assignee: Nixdorf Computer AG
    Inventors: Rolf Roschlein, Heinz Schulte