Patents by Inventor Jim Dal Freeze

Jim Dal Freeze 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).

  • Alignment method for color ink jet printer
    Patent number: 6450607
    Abstract: The invention provides a method for aligning multiple color ink jet printheads to provide ink droplet placement within about {fraction (1/600)} inch of desired droplet location. The method includes providing an ink jet printer containing a printhead carriage for retaining a black ink printhead and a multi-color ink printhead thereon. The black ink printhead contains a black ink pen and the color ink printhead preferably contains at least two pens for providing droplets of ink on a print media. A color pen is selected to provide reference vertical and horizontal alignment patterns rather than using a black pen as the reference color. This enables a smaller error for alignment than provided with conventional alignment patterns.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: September 17, 2002
    Assignee: Lexmark International, Inc.
    Inventors: John Philip Bolash, Jim Dal Freeze, Duane Edward Norris