Patents by Inventor Helen Cherniack

Helen Cherniack 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).

  • Single layer photoreceptor comprising high mobility transport mixtures
    Patent number: 8236469
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. In particular, the present embodiments pertain to an improved imaging member comprising a single layer in which the single layer further comprises a combination of one or more high mobility hole (charge) transport molecules and electron transport molecules.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: August 7, 2012
    Assignee: Xerox Corporation
    Inventors: Nancy L. Belknap, Katlyn Mallory, Helen Cherniack, Edward F. Grabowski
  • SINGLE LAYER PHOTORECEPTOR COMPRISING HIGH MOBILITY TRANSPORT MIXTURES
    Publication number: 20110195353
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. In particular, the present embodiments pertain to an improved imaging member comprising a single layer in which the single layer further comprises a combination of one or more high mobility hole (charge) transport molecules and electron transport molecules.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 11, 2011
    Applicant: XEROX CORPORATION
    Inventors: Nancy L. Belknap, Katlyn Mallory, Helen Cherniack, Edward F. Grabowski
  • Photoconductive imaging members
    Publication number: 20060099527
    Abstract: A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a pyrolyzed polyacrylonitrile.
    Type: Application
    Filed: December 14, 2005
    Publication date: May 11, 2006
    Inventors: Timothy Fuller, Helen Cherniack, Damodar Pai, Markus Silvestri, John Yanus, Yuhua Tong, Dale Renfer, Kenny-Tuan Dinh, Merlin Scharfe, Steven Sterling
  • Apparatus for removing a strip of coating material from an imaging drum such as used in xerography
    Publication number: 20050257814
    Abstract: An apparatus for removing a strip of coating material from one end of a drum, such as a photoreceptor drum used in xerography. A circular slit is formed in a resilient member, such as of closed-cell polyethylene foam. The end of the drum is rotated in the slit in the presence of a solvent, to remove the coating from the drum. A funnel-shaped shield encloses and extends upward from the circular slit, to retain the solvent and prevent splashing of solvent and other materials on neighboring hardware.
    Type: Application
    Filed: May 24, 2004
    Publication date: November 24, 2005
    Inventors: Steven Bush, Joseph Tumminelli, Magda Alvarez-Estrada, Mark Klino, Dante Pietrantoni, Helen Cherniack
  • Photoconductive imaging members
    Publication number: 20050175914
    Abstract: A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a pyrolyzed polyacrylonitrile.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 11, 2005
    Inventors: Timothy Fuller, Helen Cherniack, Damodar Pai, Markus Silvestri, John Yanus, Yuhua Tong, Dale Renfer, Kenny-Tuan Dinh, Merlin Scharfe, Steven Sterling