Patents by Inventor Edward F Grabowski

Edward F Grabowski 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).

  • Optically transparent solvent coatable carbon nanotube ground plane
    Patent number: 7829250
    Abstract: In accordance with the invention, there are xerographic photoreceptors, image forming apparatus, and methods of forming an image on image. The xerographic photoreceptor can include a substrate and a conductive ground plane having an optical transparency disposed over the substrate, the conductive ground plane including a carbon nanotube layer, such that machine cycling of the xerographic photoreceptor can produce less than approximately a 10% change in the optical transparency of the conductive ground plane after about 100,000 or more machine cycles. The xerographic photoreceptor can also include a photosensitive layer disposed over the conductive ground plane, wherein the photosensitive layer can include a charge generator material and a charge transport material.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: November 9, 2010
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, John S. Facci, Edward F. Grabowski
  • STRUCTURALLY SIMPLIFIED FLEXIBLE IMAGING MEMBERS
    Publication number: 20100279217
    Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of a liquid compound having a high boiling point into the charge transport layer such that an anticurl back coating is no longer needed for reduction or elimination of photoreceptor upward curling.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 4, 2010
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Stephen T. Avery, Yuhua Tong, Michael Roetker, Edward F. Grabowski, Jimmy E. Kelly
  • FLEXIBLE IMAGING MEMBERS WITHOUT ANTICURL LAYER
    Publication number: 20100279219
    Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of a liquid compound having a high boiling point into the charge transport layer such that an anticurl back coating is no longer needed for reduction or elimination of photoreceptor layer curling.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 4, 2010
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Stephen T. Avery, Edward F. Grabowski, Terry L. Street, Jimmy E. Kelly, Joellen Simone
  • COATING FOR OPTICALLY SUITABLE AND CONDUCTIVE ANTI-CURL BACK COATING LAYER
    Publication number: 20100273100
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the embodiments pertain to an improved electrostatographic imaging member incorporating a thermoplastic material pre-compounded to impart conductivity to the anti-curl back coating layer and may also contain an adhesion promoter which provides a conductively and optically anti-curl back coating layer. The conductive anti-curl back coating of the present disclosure may be formulated to have a single layer, dual layers, or triple layers.
    Type: Application
    Filed: April 24, 2009
    Publication date: October 28, 2010
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Yuhua Tong, Edward F. Grabowski, Kock-Yee Law
  • COATING DISPERSION FOR OPTICALLY SUITABLE AND CONDUCTIVE ANTI-CURL BACK COATING LAYER
    Publication number: 20100239966
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the embodiments pertain to an improved electrostatographic imaging member incorporating a carbon nano tube dispersion into a high molecular weight polycarbonate and an anti-static copolymer with polyester, polycarbonate, and polyethylene glycol units in a formulation for the anti-curl back coating layer which provides a conductively suitable and stable dispersion coating solution for making an optically suitable anti-curl back coating layer.
    Type: Application
    Filed: March 18, 2009
    Publication date: September 23, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Edward F. Grabowski, Donald J. Goodman, Kock-Yee Law, Robert C.U. Yu
  • Process for the removal of photoreceptor coatings using a stripping solution
    Patent number: 7799140
    Abstract: The disclosed embodiments are directed to processes for removing photoreceptor coatings from a substrate, wherein the photoreceptor coatings disposed over a substrate of an electrophotographic photoreceptor. More specifically, the invention discloses a photoreceptor coatings removal process comprises subjecting an electrophotographic photoreceptor to a stripping solution that separates the coatings from the substrate.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: September 21, 2010
    Assignee: Xerox Corporation
    Inventors: Robert P. Altavela, Yuhua Tong, Edward F. Grabowski, Kent J. Evans, Adilson Ramos, Nancy Belknap, Helen R. Cherniack
  • BORON CONTAINING HOLE BLOCKING LAYER PHOTOCONDUCTOR
    Publication number: 20100221649
    Abstract: A photoconductor that includes a supporting substrate, a ground plane layer, a hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the hole blocking layer includes a boron containing compound.
    Type: Application
    Filed: February 27, 2009
    Publication date: September 2, 2010
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Dennis J. Prosser, Kathleen M. Carmichael, Sherri A. Toates, Kent J. Evans, Edward F. Grabowski
  • Thiadiazole containing charge transport layer photoconductors
    Patent number: 7785759
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 31, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Terry L Street, Terry L Bluhm, Kent J Evans, Edward F Grabowski, Susan M Vandusen, Min-Hong Fu, Kathleen M Carmichael
  • Photoconductors containing halogenated binders
    Patent number: 7776498
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer, and at least one charge transport layer; and wherein the photogenerating layer is comprised of at least one photogenerating pigment and a resin binder that is substantially insoluble in an alkylene halide like methylene chloride.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: August 17, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Satchidanand Mishra, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Michael A. Morgan, Kathleen M. Carmichael, Edward F. Grabowski, Liang-Bih Lin
  • Imaging member having high molecular weight binder
    Patent number: 7767373
    Abstract: Imaging members useful in electrostatographic apparatuses, including printers, copiers, other reproductive devices, and digital apparatuses. More particularly, imaging members having a binder of high molecular weight that is included in one or more layers of an imaging member to impart coating consistency and to provide for increased mechanical strength and improved wear.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: August 3, 2010
    Assignee: Xerox Corporation
    Inventors: Donald J. Goodman, Satish Parikh, Edward F. Grabowski, Kathleen M. Carmichael, David M. Skinner
  • NANO DIAMOND ANTICURL BACKSIDE COATING (ACBC) PHOTOCONDUCTORS
    Publication number: 20100190099
    Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer is comprised of a nano diamond component.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 29, 2010
    Applicant: Xerox Corporation
    Inventors: Jin Wu, Edward F. Grabowski, Lin Ma, Lanhui Zhang
  • Imaging member
    Patent number: 7754404
    Abstract: The presently disclosed embodiments are directed to overcoat layers useful in electrostatography. More particularly, the embodiments pertain to an electrostatographic imaging member with an improved overcoat layer including a polymeric binder that lowers the surface energy involved and reduces friction.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: July 13, 2010
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Kathleen M. Carmichael, Anthony M. Horgan, Markus R. Silvestri, Satish Parikh, Edward F. Grabowski, Kenny-tuan Dinh, Richard L. Post, Donald J. Goodman
  • Photoconductors containing halogenated binders and aminosilanes in hole blocking layer
    Patent number: 7732111
    Abstract: A photoconductor containing a supporting substrate; an undercoat layer comprised of a mixture of an aminosilane and a halogenated polymer; a photogenerating layer; and at least one charge transport layer.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: June 8, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Satchidanand Mishra, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Michael A. Morgan, Kathleen M. Carmichael, Edward F. Grabowski, Liang-Bih Lin
  • Phosphonium containing charge transport layer photoconductors
    Patent number: 7709168
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the at least one charge transport layer contains at least one phosphonium salt.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: May 4, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Edward F Grabowski, Kent J Evans, Daniel V Levy
  • Imaging member having antistatic anticurl back coating
    Patent number: 7682763
    Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of polyols in the anticurl back coating to reduce or eliminate static charge buildup in the imaging member and to improve image quality.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: March 23, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
  • CHARGE TRANSPORT LAYER HAVING HIGH MOBILITY TRANSPORT MOLECULE MIXTURE
    Publication number: 20100055588
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a specific mixture of high mobility molecules in the charge transport layer which exhibits reduced propensity for crystallization while maintaining or improving electrical performance.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 4, 2010
    Applicant: XEROX CORPORATION
    Inventors: Nancy Belknap, John F. Yanus, Helen R. Cherniack, David M. Skinner, Kent J. Evans, Edward F. Grabowski
  • PHENOLIC RESIN HOLE BLOCKING LAYER PHOTOCONDUCTORS
    Publication number: 20090325090
    Abstract: A photoconductor that includes, for example, a substrate, a first layer like a ground plane layer, an undercoat layer thereover wherein the undercoat layer contains an aminosilane and a phenolic resin, a photogenerating layer, and at least one charge transport layer.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Dennis J. Prosser, Kathleen M. Carmichael, Sherri A. Toates, Kent J. Evans, Edward F. Grabowski
  • PYRAZINE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090274968
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a pyrazine.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M. Carmichael
  • CARBAZOLE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090274970
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a carbazole.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M Carmichael
  • LOW FRICTION ELECTROSTATOGRAPHIC IMAGING MEMBER
    Publication number: 20090253059
    Abstract: Present embodiments pertain to an improved electrostatographic imaging member having low contact friction surfaces to ease sliding mechanical interaction and suppressing abrasion/wear failure and methods of preparing thereof. The improved imaging member has layers comprising one or two low surface energy polymeric materials that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life.
    Type: Application
    Filed: April 7, 2008
    Publication date: October 8, 2009
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Kathleen M. Carmichael, Stephen T. Avery, Satish Parikh