Patents by Inventor Derek J. Milton

Derek J. Milton 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).

  • Paper input guide for a transfer zone in a xerographic printing apparatus
    Patent number: 6687479
    Abstract: A printing apparatus includes a guide member for directing sheets toward a transfer zone. The guide member defines a set of ribs which hold the sheets above the main surface of the guide member. Thus, any stray marking material which lands on the guide member is relatively unlikely to contact a sheet moving over the guide member.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: February 3, 2004
    Assignee: Xerox Corporation
    Inventors: Gerardo Leute, John W. D. Cooper, Ian Brailsford, Stan Alan Spencer, Roger D. Masham, Derek J. Milton, Robert G. Hall, Roderick A. Cooley, John M. Wysocky, Charles H. Tabb, Jorge A. Alvarez, Alexander C. Bisland, Peter A. Mayfield, Clifford W. Imes, IV, Peter J. M. Bloemen, Michael B. Thomson, Krzysztof J. Less, David G. Anderson
  • Paper input guide for a transfer zone in a xerographic printing apparatus
    Publication number: 20030223787
    Abstract: A printing apparatus includes a guide member for directing sheets toward a transfer zone. The guide member defines a set of ribs which hold the sheets above the main surface of the guide member. Thus, any stray marking material which lands on the guide member is relatively unlikely to contact a sheet moving over the guide member.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Applicant: Xerox Corporation
    Inventors: Gerardo Leute, John W. D. Cooper, Ian Brailsford, Stan Alan Spencer, Roger D. Masham, Derek J. Milton, Robert G. Hall, Roderick A. Cooley, John M. Wysocky, Charles H. Tabb, Jorge A. Alvarez, Alexander C. Bisland, Peter A. Mayfield, Clifford W. Imes, Peter J. M. Bloemen, Michael B. Thomson, Krzysztof J. Less, David G. Anderson
  • Xerographic cassette with dual waste toner storage
    Patent number: 5778296
    Abstract: A xerographic cassette for a printing or copying machine includes a photoreceptor drum, a cleaning blade, and a waste toner conveyor for conveying waste toner cleaned off the photoreceptor drum by the cleaning blade into the interior of the photoreceptor drum for storage. The conveyor includes a flexible helical wire which acts as an auger. A curved tube portion of the conveyor passes through an auxiliary waste toner container. Once the auxiliary container is substantially full, waste toner is conveyed into the interior of the photoreceptor drum. The auxiliary container is provided with an aperture which enables it to be emptied, thereby prolonging the useful life of the cassette.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: July 7, 1998
    Assignee: Xerox Corporation
    Inventors: Jan J. van der Steen, Ruud Vullers, Marcel Kuipers, Jozef P. M. Logtens, Roderick A. Cooley, Derek J. Milton, Andrew E. Taylor, Stephen J. Abbott
  • Electrically biased sheet stripping apparatus
    Patent number: 5621513
    Abstract: A sheet stripping device for stripping copy sheets from an arcuate imaging surface, including a support element and an electrically conductive stripping element coupled to an electrically biasing source. An electrical bias is applied to the stripping elements or fingers to suppress the build-up of toner on the stripping element so that large concentrations of toner are eliminated and minimal residue is left on the fingers as a thin film for preventing background contamination of the copy sheet.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: April 15, 1997
    Assignee: Xerox Corporation
    Inventors: Ian Pitts, John W. D. Cooper, Derek J. Milton
  • Transfer charge control system
    Patent number: 4673280
    Abstract: The transfer station of an electrostatographic apparatus includes a transfer corotron which assists the transfer of a developed image to a copy sheet. The shield of the transfer corotron is allowed to self-bias to a potential controlled by a Zener diode, and this potential is applied to a sheet guide member. Copy paper sheets are fed over a sheet guiding portion of the guide member towards the photoconductor drum, and while the sheets are in contact with the guide member they acquire the potential which is predetermined to ensure optimum transfer conditions.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: June 16, 1987
    Assignee: Xerox Corporation
    Inventor: Derek J. Milton