Patents by Inventor Sandor I. Lengyel

Sandor I. Lengyel 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).

  • Ink jet printing density controller with programmable angle of travel look-up tables for a plotter
    Patent number: 5126754
    Abstract: This invention maintains a selected printed ink drop density in an image recording device such as an X-Y plotter having a cartridge of the type which emits discrete ink droplets onto a recording medium and wherein the cartridge is transported along two axes with respect to the medium. There is sensing apparatus for sensing the two-dimensional velocity vector of the cartridge and control apparatus for regulating the rate at which the cartridge emits the droplets in accordance with the two-dimensional velocity vector. Thus, a given printed dot density on the medium is maintained for different angles of travel of the cartridge.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: June 30, 1992
    Assignee: Calcomp Inc.
    Inventors: Brian L. Spinar, Sandor I. Lengyel