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).

  • Patent number: 8273512
    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. Embodiments pertain to an improved electrostatographic imaging member comprising an interfacial layer further comprising an opaque semi-crystalline polyester resin that is also a hot-melt adhesive to prevent light transmission to the substrate and thus significantly reduce “plywood effect,” a print quality defect.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: September 25, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Edward F. Grabowski, Jin Wu
  • Patent number: 8273514
    Abstract: The present embodiments are generally directed to an improved imaging member exhibiting various advantages over conventional imaging members. More specifically, the present embodiments are directed to an improved interfacial layer formed from an aqueous-based coating solution which exhibits improved formation and coating properties, such as increased homogeneity and adhesion, and methods for making the same. The aqueous-based coating solution is environment-friendly and avoids the need to use more expensive organic solvents which involve higher safety risks in the manufacturing process.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: September 25, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Edward F. Grabowski, Robert D. Bayley
  • Patent number: 8257892
    Abstract: Embodiments relate generally to an imaging member that facilitates removal of the imaging member coating layers disposed over the imaging member and environmentally or “green” methods for using the same. More specifically, the present embodiments disclose an electrophotographic photoreceptor that includes a specifically formulated undercoat layer that allows easy removal of the photoreceptor layers disposed on top of the undercoat layer. The present embodiments provide a simple yet efficient method for reclaiming recycling or remanufacturing electrophotographic photoreceptors.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 4, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Yuhua Tong, Helen R. Cherniack, Edward F. Grabowski, Kent J. Evans, Nancy L. Belknap
  • Publication number: 20120211704
    Abstract: Flexible members for use in imaging devices comprise a polymerizable release agent.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 23, 2012
    Applicant: XEROX CORPORATION
    Inventors: Edward F. Grabowski, Yuhua Tong
  • 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
  • Publication number: 20120196216
    Abstract: A photoconductor comprising a substrate, an undercoat layer, a photogenerating layer and a charge transport layer is described. The undercoat layer is disposed on the substrate and comprises a metal oxide, and a mixture of a phenolic resin and a cyclohexanecarboxylate.
    Type: Application
    Filed: January 27, 2011
    Publication date: August 2, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Jin Wu, Edward F. Grabowski, Marc J. Livecchi
  • Patent number: 8232032
    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: Grant
    Filed: March 29, 2011
    Date of Patent: July 31, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Kathleen M. Carmichael, Stephen T. Avery, Satish Parikh
  • Patent number: 8211601
    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: Grant
    Filed: April 24, 2009
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Yuhua Tong, Edward F. Grabowski, Kock-Yee Law
  • Patent number: 8168356
    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: Grant
    Filed: May 1, 2009
    Date of Patent: May 1, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Stephen T. Avery, Yuhua Tong, Michael Roetker, Edward F. Grabowski, Jimmy E. Kelly
  • Patent number: 8163449
    Abstract: The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise a polymer blend of an anti-static polymer and a low surface energy A-B diblock copolymer polymer and an adhesion promoter. The embodiments provide an imaging member belt with the anticurl back coating that is electrically conductive and also substantially reduces its surface contact friction to help suppress/eliminate tribo-electrical charge build-up at the backside of the imaging member belt under normal machine imaging member belt operational conditions in the field.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Yuhua Tong
  • Patent number: 8142968
    Abstract: The disclosed embodiments are directed to an electrophotographic photoreceptor having a release layer. More particularly, the disclosure relates to an electrophotographic photoreceptor having a release layer which comprises an organosilane compound coated over the substrate surface. Other embodiments include methods for coating layer removal using a specifically configured electrophotographic photoreceptor having a release layer and methods for recovering a charge transport molecule.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Robert P. Altavela, Yuhua Tong, Edward F. Grabowski, Kent J. Evans, Adilson Ramos, Nancy Belknap, Helen R. Cherniack
  • Patent number: 8142967
    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: Grant
    Filed: March 18, 2009
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Edward F. Grabowski, Donald J. Goodman, Kock-Yee Law, Robert C. U. Yu
  • Patent number: 8124305
    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: Grant
    Filed: May 1, 2009
    Date of Patent: February 28, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Stephen T. Avery, Edward F. Grabowski, Terry L. Street, Jimmy E. Kelly, Joellen Simone
  • Publication number: 20120045715
    Abstract: The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise conductive carbon nanotubes dispersion in a polymer blend comprising three film-forming thermoplastic polymers to: (a) render electrical conductivity effect for tribo-electrical charge elimination (b) impart static dissipation capability, and (c) provide surface energy lowering effect for contact friction reduction to ease imaging member belt drive as well as cutting tribo-electrical charge build-up under normal imaging member belt operational conditions in the field.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 23, 2012
    Applicant: XEROX CORPORATION
    Inventors: Edward F. Grabowski, Robert C. U. Yu, Kock-Yee Law, Yuhua Tong
  • Publication number: 20120034555
    Abstract: The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise a polymer blend of an anti-static polymer and a low surface energy A-B diblock copolymer polymer and an adhesion promoter. The embodiments provide an imaging member belt with the anticurl back coating that is electrically conductive and also substantially reduces its surface contact friction to help suppress/eliminate tribo-electrical charge build-up at the backside of the imaging member belt under normal machine imaging member belt operational conditions in the field.
    Type: Application
    Filed: August 5, 2010
    Publication date: February 9, 2012
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Yuhua Tong
  • Patent number: 8110327
    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 includes a fluorinated nano diamond component.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: February 7, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Edward F. Grabowski, Lanhui Zhang, Lin Ma
  • Publication number: 20120015153
    Abstract: Described herein is a method of forming a seamless transfer member suitable for use with an image forming system. The method includes spray coating a UV curable polymer and conductive particles onto an inner surface of a rotating cylindrical mandrel. The UV curable polymer is cured with ultra violet energy. The cured UV polymer is removed from the cylindrical rotatable mandrel.
    Type: Application
    Filed: July 13, 2010
    Publication date: January 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Satchidanand Mishra, Edward A. Domm, Jin Wu, Geoffrey M.T. Foley, Edward F. Grabowski
  • Patent number: 8062815
    Abstract: A photoconductor comprising 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 imidazolium salt.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: November 22, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Edward F Grabowski, Kent J Evans, Dale S Renfer
  • Patent number: 8057973
    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: Grant
    Filed: January 27, 2009
    Date of Patent: November 15, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Edward F Grabowski, Lin Ma, Lanhui Zhang
  • Patent number: 8053152
    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: Grant
    Filed: February 27, 2009
    Date of Patent: November 8, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Dennis J Prosser, Kathleen M Carmichael, Sherri A Toates, Kent J Evans, Edward F Grabowski