Patents by Inventor Henry Till

Henry Till 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).

  • Vacuum assisted dispersant reduction system
    Patent number: 5332642
    Abstract: In a device and method for increasing the solids content of an image formed from a liquid developer, absorption material is contacted with a toner dispersant laden image, and the absorbed dispersant is vacuumed out of the absorption material. The absorption material preferably is a conductive cover on a porous roller biased with an electrical charge which is the same as the charge of the toner particles, such that the resulting electric field repels the toner particles from the absorption material so that minimal toner particles are transferred to the absorption material.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: July 26, 1994
    Assignee: Xerox Corporation
    Inventors: Robert Simms, Henry Till, Robert K. Waring, John Gardner, Tab Tress, James Simpson