Patents by Inventor Jeanne M Koval

Jeanne M Koval 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).

  • Protective coatings for bias charge rollers
    Patent number: 10585371
    Abstract: Exemplary embodiments provide materials and methods for an electrostatic charging member including a conductive substrate; a base layer disposed over the conductive substrate, the base layer comprising an elastomeric material and a semiconductive material; and a protective outer layer disposed over the base layer, the protective outer layer comprising a polymeric resin and a plurality of conductive particles, wherein the outer protective layer has a surface resistivity ranging from about 105 O/sq to about 1013 O/sq.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: March 10, 2020
    Assignee: XEROX CORPORATION
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Jin Wu, Aaron M. Stuckey
  • Bias charging overcoat
    Patent number: 8768219
    Abstract: Provide herein is a description of a bias charging member that includes a conductive core, and an outer surface layer disposed on the conductive core. The outer surface layer includes carbon black and acrylonitrile-butadiene-styrene.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: July 1, 2014
    Assignee: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey, Gary A. Batt
  • Bias charge roller surface coating comprised of carbon nanotubes
    Patent number: 8753735
    Abstract: Various embodiments provide materials and methods for bias charging members including an outer surface coating, wherein the outer surface coating can include carbon nanotubes combined with polymer(s) to provide desirable surface, electrical, and/or mechanical properties.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: June 17, 2014
    Assignee: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Jin Wu, Aaron M. Stuckey
  • Bias charging overcoat
    Patent number: 8649704
    Abstract: Provide herein is a bias charging member that includes a conductive core, and an outer surface layer disposed on the conductive core. The outer surface layer includes carbon black and polycarbonate.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: February 11, 2014
    Assignee: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey, Gary A. Batt
  • Bias charging overcoat
    Patent number: 8483591
    Abstract: There is described a bias charging member that includes a conductive core and an outer surface layer on the conductive core. The outer surface layer includes a resin of aminoplast and one of polyol or nylon, a conductive additive and p-toluene sulfonic acid. There is also described a method of refurbishing bias charging members.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: July 9, 2013
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Gary A. Batt, Brian Gilmartin, Jeanne M. Koval, Aaron M. Stuckey
  • BIAS CHARGE ROLLER SURFACE COATING COMPRISED OF CARBON NANOTUBES
    Publication number: 20120321850
    Abstract: Various embodiments provide materials and methods for bias charging members including an outer surface coating, wherein the outer surface coating can include carbon nanotubes combined with polymer(s) to provide desirable surface, electrical, and/or mechanical properties.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 20, 2012
    Applicant: XEROX CORPORATION
    Inventors: Brian P. GILMARTIN, Liang-Bih Lin, Jeanne M. Koval, Jin Wu, Aaron M. Stuckey
  • PROTECTIVE COATINGS FOR BIAS CHARGE ROLLERS
    Publication number: 20120301818
    Abstract: Exemplary embodiments provide materials and methods for an electrostatic charging member including a conductive substrate; a base layer disposed over the conductive substrate, the base layer comprising an elastomeric material and a semiconductive material; and a protective outer layer disposed over the base layer, the protective outer layer comprising a polymeric resin and a plurality of conductive particles, wherein the outer protective layer has a surface resistivity ranging from about 105 O/sq to about 1013 O/sq.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: XEROX CORPORATION
    Inventors: Brian P. GILMARTIN, Liang-Bih LIN, Jeanne M. KOVAL, Jin WU, Aaron M. STUCKEY
  • Bias charge roller comprising overcoat layer
    Patent number: 8249488
    Abstract: Disclosed are bias charge rollers having an overcoat layer. The overcoat layer comprises an acrylonitrile-butadiene-styrene (ABS) terpolymer and metal oxide particles optionally doped with a doping agent. The resulting bias charge rollers have reduced streaking and increased service lifetimes.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: August 21, 2012
    Assignee: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey
  • Bias charge roller comprising overcoat layer
    Patent number: 8086142
    Abstract: Disclosed are bias charge rollers having an overcoat layer. The overcoat layer comprises a phenolic resin and a conductive agent. The resulting bias charge rollers have reduced streaking and increased service lifetimes.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: December 27, 2011
    Assignee: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey
  • BIAS CHARGE ROLLER COMPRISING OVERCOAT LAYER
    Publication number: 20110200361
    Abstract: Disclosed are bias charge rollers having an overcoat layer. The overcoat layer comprises a phenolic resin and a conductive agent. The resulting bias charge rollers have reduced streaking and increased service lifetimes.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 18, 2011
    Applicant: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey
  • BIAS CHARGE ROLLER COMPRISING OVERCOAT LAYER
    Publication number: 20110200362
    Abstract: Disclosed are bias charge rollers having an overcoat layer. The overcoat layer comprises an acrylonitrile-butadiene-styrene (ABS) terpolymer and metal oxide particles optionally doped with a doping agent. The resulting bias charge rollers have reduced streaking and increased service lifetimes.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 18, 2011
    Applicant: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey
  • BIAS CHARGE ROLLER COMPRISING OVERCOAT LAYER
    Publication number: 20110201485
    Abstract: Disclosed are overcoat layers comprising an acrylic resin crosslinked with a glycoluril resin. The overcoat layers are useful in bias charge rollers because they reduce streaking and increase service lifetime.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 18, 2011
    Applicant: Xerox Corporation
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey
  • BIAS CHARGING OVERCOAT
    Publication number: 20110123219
    Abstract: Provide herein is a description of a bias charging member that includes a conductive core, and an outer surface layer disposed on the conductive core. The outer surface layer includes carbon black and acrylonitrile-butadiene-styrene.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Applicant: XEROX CORPORATION
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey, Gary A. Batt
  • BIAS CHARGING OVERCOAT
    Publication number: 20110123220
    Abstract: Provide herein is a bias charging member that includes a conductive core, and an outer surface layer disposed on the conductive core. The outer surface layer includes carbon black and polycarbonate.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Applicant: XEROX CORPORATION
    Inventors: Brian P. Gilmartin, Liang-Bih Lin, Jeanne M. Koval, Aaron M. Stuckey, Gary A. Batt
  • Non-removable CRU light shield replacement for pull strip
    Patent number: 7937022
    Abstract: This is a shroud for housing a replacement photoconductive drum. The shroud has an open gap at its top portion and this gap is covered by at least two overlapping flexible strips that are configured to allow a handle structure to pass therethrough on its way to an exit in the shroud where the photoconductive drum is pushed out of the shroud when installing the drum in a marking machine.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: May 3, 2011
    Assignee: Xerox Corporation
    Inventors: Aaron M Stuckey, Jeanne M Koval, Mark T Bartlett
  • BIAS CHARGING OVERCOAT
    Publication number: 20110052252
    Abstract: There is described a bias charging member that includes a conductive core and an outer surface layer on the conductive core. The outer surface layer includes a resin of aminoplast and one of polyol or nylon, a conductive additive and p-toluene sulfonic acid. There is also described a method of refurbishing bias charging members.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Liang-Bih Lin, Gary A. Batt, Brian Gilmartin, Jeanne M. Koval, Aaron M. Stuckey
  • NON-REMOVABLE CRU LIGHT SHIELD REPLACEMENT FOR PULL STRIP
    Publication number: 20100061762
    Abstract: This is a shroud for housing a replacement photoconductive drum. The shroud has an open gap at its top portion and this gap is covered by at least two overlapping flexible strips that are configured to allow a handle structure to pass therethrough on its way to an exit in the shroud where the photoconductive drum is pushed out of the shroud when installing the drum in a marking machine.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 11, 2010
    Applicant: XEROX CORPORATION
    Inventors: AARON M. STUCKEY, Jeanne M. Koval, Mark T. Bartlett