Patents by Inventor Bo Rydstrom

Bo Rydstrom 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).

  • Method and apparatus for cleaning the printhead structure during direct electrostatic printing
    Patent number: 6027206
    Abstract: An image recording device and method for recording an image to an information carrier. An intermediate image receiving member has a first face and a second face. The printhead structure is placed inbetween a pigment particle source and the first face of the intermediate image receiving member. The image recording device comprises a pressure changing means which can create a pressure difference on the side of a second face of the intermediate image receiving member in the vicinity of apertures used for pigment particle control. The intermediate image receiving member comprises a cleaning area for cleaning purposes and a separate image area intended for reception of pigment particles for formation of a pigment image thereon.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: February 22, 2000
    Assignee: Array Printers AB
    Inventors: Bengt Bern, Bo Rydstrom