Patents by Inventor John Slowik

John Slowik 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).

  • Methods and apparatus for thermal fluid jet drop volume control using variable length pre-pulses
    Publication number: 20050179739
    Abstract: A method and apparatus are providing for controlling the drop volume of a thermal fluid jet fluid ejecting head. The fluid ejecting head has a plurality of drop ejectors, each of the plurality of drop ejectors has a heating element activated in response to input signals to eject an ink droplet from the fluid ejecting head. The method includes the steps of applying a plurality of print signals to the fluid ejecting head, the plurality of print signals corresponding to an image for the fluid jet assembly to create, applying at least two pre-pulse signals of different duration to the fluid ejecting head, and using the at least two pre-pulse signals and the plurality of print signals to activate the heating elements so that a desired drop volume results.
    Type: Application
    Filed: February 17, 2004
    Publication date: August 18, 2005
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Eduardo Freire, John Slowik, Andrew Yeh, Roger Markham, William Rhodes