Patents Represented by Attorney John L. Hoack

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  • Toner and developer compositions comprising aluminum charge control agent
    Patent number: 5223368
    Abstract: A toner containing resin, pigment and an aluminum hydroxide charge additive, or the hydrates thereof, and developer compositions with the aforementioned toner and imaging processes thereof are disclosed.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: June 29, 1993
    Assignee: Xerox Corporation
    Inventors: Roger N. Ciccarelli, Denise R. Bayley, Jacques C. Bertrand, Thomas R. Pickering