Patents by Inventor Meagan C. Winkler

Meagan C. Winkler 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 printer that prints using chromatic inks of multiple types
    Patent number: 7147301
    Abstract: An ink jet printer includes a carrier for mounting a first printhead and a second printhead. A first ink reservoir is coupled in fluid communication with the first printhead, and contains a chromatic dye-based ink. A second ink reservoir is coupled in fluid communication with the second printhead, and contains a chromatic pigment-based ink.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: December 12, 2006
    Assignee: Lexmark International, Inc.
    Inventors: James H. Powers, Jack W Morris, Meagan C. Winkler, Agnes K. Zimmer
  • Ink jet ink with improved reliability
    Patent number: 6863719
    Abstract: An ink composition comprising: a self-dispersing carbon black, a binder, a stabilizing dye comprising at least as many groups comprising CO2H or COSH as groups comprising SO3H, and an aqueous vehicle. The stabilizing dye can improve the reliability and performance of the ink composition. The addition of the stabilizing dye can reduce or prevent the formation of material that blocks the printhead vias and throats as a result of the presence of a binder in the ink. The ink composition can reduce the amount of maintenance needed to retain all of a printhead's nozzles through the life of the printhead.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: March 8, 2005
    Assignee: Lexmark International, Inc.
    Inventors: Susan H. Butler, Meagan C. Winkler