Patents by Inventor Mark E. Bunke

Mark E. Bunke 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 quieting the operation of a dot matrix printer
    Patent number: 4758103
    Abstract: A method and apparatus for quieting the operation of a dot matrix printer by logically dividing the data to be printed among timed spaced printing passes is disclosed. A matrix of data to be printed is stored in a memory. A slice of data is selected from the stored data and the number of dots to be printed simultaneously is reduced by logically allocating the data in each slice among complementary submatrices. Each submatrix of data is printed substantially aligned with each other submatrix in two passes of the print head across the print medium to represent the entire selected slice of data. Noise reduction is achieved by reducing the number of data dots simultaneously printed at each print location.
    Type: Grant
    Filed: April 15, 1986
    Date of Patent: July 19, 1988
    Assignee: International Business Machines Corporation
    Inventors: Tim V. Angst, Mark E. Bunke, Phuc K. Do, Nicholas J. Krull, Demetrios Troupes, Carol E. Wyke