Patents by Inventor Matthew M. Dennie

Matthew M. Dennie 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).

  • Optimal toner concentration sensing system for an electrophotographic printer
    Patent number: 5600409
    Abstract: A maintenance method for a high-volume electrophotographic printer, in which an optimal toner/carrier (T/C) ratio for a primary toner supply is determined. The primary toner supply is first "stressed" to minimize the T/C therein, by developing a series of test patterns which include a series of narrow lines. Printing of narrow lines influences the proportion of relatively small toner particles in the toner supply. After this stressing, new toner particles are gradually introduced into the primary toner supply while a series of test patches is developed and the density of the test patches is monitored.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: February 4, 1997
    Assignee: Xerox Corporation
    Inventor: Matthew M. Dennie