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).

  • THIADIAZOLE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090246667
    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: Application
    Filed: March 31, 2008
    Publication date: October 1, 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
  • Imaging member
    Patent number: 7592111
    Abstract: An electrostatographic imaging member formulated with a liquid carbonate is provided. The imaging electrostatographic member exhibits improved service life.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: September 22, 2009
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Yuhua Tong, Edward F. Grabowski, Kathleen M. Carmichael, Markus R. Silvestri
  • Imaging member having antistatic anticurl back coating containing polyhedral oligomeric silsequioxane silanol
    Patent number: 7585602
    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 silanols 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: September 8, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
  • Imaging member
    Patent number: 7579125
    Abstract: An imaging member has a crosslinked overcoat layer which holds fluorinated nanoparticles. The overcoat layer is formed from an overcoat solution comprising a polymer binder; a hole transport molecule; fluorinated nanoparticles; a fluorinated surfactant; a crosslinking agent; and a free radical initiator. The overcoat layer provides excellent wear resistance at a low cost.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: August 25, 2009
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Kathleen M. Carmichael, Edward F. Grabowski
  • Imaging members and method for sensitizing a charge generation layer of an imaging member
    Patent number: 7575838
    Abstract: An imaging member including a substrate; thereover a charge generation layer comprising a thiophosphate; and at least one charge transport layer positioned on the charge generation layer.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: August 18, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Geoffrey M. T. Foley, Satchidanand Mishra, Liang-bih Lin, Anthony M. Horgan, Yonn K. Rasmussen, Kathleen M. Carmichael, Edward F. Grabowski, Markus Rudolf Silvestri
  • Imaging member having antistatic anticurl back coating
    Patent number: 7572562
    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 metallic compounds 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: August 11, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
  • Imaging member
    Patent number: 7569317
    Abstract: An imaging member is disclosed which includes a charge generating layer and a charge transport layer. The charge transport layer includes a first charge transport layer adjacent the charge generating layer and at least a second charge transport layer adjacent the first charge transport layer. Each charge transport layer includes a film forming polymer binder and a charge transport material dispersed therein. The first charge transport material has a composition which is the same or different than the second charge transport material and of a lower concentration. It may be selected from an aryl amine, aryl diamine, or combinations thereof. The combination has the effect of reducing charge deficient spots.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: August 4, 2009
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Kathleen M. Carmichael, Yuhua Tong, Anthony M. Horgan, Edward F. Grabowski, Richard L. Post, Susan M. VanDusen
  • Imaging member having antistatic anticurl back coating
    Patent number: 7560210
    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 thiophosphates 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: July 14, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Geoffrey M. T. Foley, Satchidanand Mishra, Liang-bih Lin, Anthony M. Horgan, Kent J. Evans, Kathleen M. Carmichael, Edward F. Grabowski
  • Imaging member having antistatic anticurl back coating
    Patent number: 7553591
    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 organic sulfonic acids 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: June 30, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
  • Titanyl phthalocyanine photoconductors
    Patent number: 7553593
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the photogenerating layer contains a titanyl phthalocyanine prepared, for example, by dissolving a Type I titanyl phthalocyanine in a solution comprising a trihaloacetic acid and an alkylene halide; adding the mixture comprising the dissolved Type I titanyl phthalocyanine to a solution comprising an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with a monohalobenzene.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: June 30, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Satchidanand Mishra, Kathleen M. Carmichael, Anthony M. Horgan, Kent J. Evans, Geoffrey M T. Foley, Yonn K. Rasmussen, Edward F. Grabowski, Liang-Bih Lin
  • OPTICALLY TRANSPARENT SOLVENT COATABLE CARBON NANOTUBE GROUND PLANE
    Publication number: 20090162761
    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: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Inventors: Kock-Yee Law, John S. Facci, Edward F. Grabowski
  • CARBON NANOTUBE FILLED POLYCARBONATE ANTI-CURL BACK COATING WITH IMPROVED ELECTRICAL AND MECHANICAL PROPERTIES
    Publication number: 20090162637
    Abstract: Transparent or semi-transparent, electrically conductive anti-curl back coating composite for electrophotographic imaging member comprising a carbon nanotube complex and a polycarbonate binder are described along with processes for preparing them.
    Type: Application
    Filed: October 22, 2008
    Publication date: June 25, 2009
    Applicant: XEROX CORPORATION
    Inventors: Edward F. Grabowski, Kock-Yee Law, Markus R. Silvestri, Donald J. Goodman, Dale S. Renfer, Ryan J. Ehmann, Kathleen M. Carmichael, Scott J. Griffin, Jonathan H. Herko, Michael S. Roetker
  • Imaging member having adjustable friction anticurl back coating
    Patent number: 7527906
    Abstract: The presently disclosed embodiments are directed to anticurl back coatings useful in electrostatography. More particularly, the embodiments pertain to an electrophotographic imaging member with an improved anticurl back coating formulated by a polymer blend comprising two low surface energy polymeric materials that prevents curling, renders surface lubricity, eliminates electrostatic charge buildup, reduces surface contact friction, and enhances abrasion/wear resistance, and a process for making and using the imaging member.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: May 5, 2009
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Stephen T. Avery, Edward F. Grabowski, Satish Parikh, Donald J. Goodman
  • Imaging member having antistatic anticurl back coating
    Patent number: 7517623
    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 polyol esters and/or amides 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: April 14, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
  • Imaging member
    Patent number: 7517624
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an electrostatographic imaging member with an improved charge transport layer including a polymeric binder that lowers the surface energy involved and reduces friction.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: April 14, 2009
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Kathleen M. Carmichael, Satish Parikh, Anthony M. Horgan, Markus R. Silvestri, Edward F. Grabowski, Kenny-tuan Dinh, Richard L. Post, Donald J. Goodman
  • PHOSPHONIUM CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090092915
    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: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Daniel V. Levy
  • PHOSPHONIUM CONTAINING PHOTOGENERATING LAYER PHOTOCONDUCTORS
    Publication number: 20090092914
    Abstract: A photoconductor that includes, for example, a supporting substrate, a phosphonium salt containing photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Daniel V. Levy, Liang-Bih Lin
  • IMIDAZOLIUM SALT CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090092912
    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: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Dale S. Renfer
  • ADDITIVE CONTAINING PHOTOGENERATING LAYER PHOTOCONDUCTORS
    Publication number: 20090092913
    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 where the photogenerating layer contains an ammonium salt, an imidazolium salt, or mixtures thereof.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Sherri A. Colon, Dale S. Renfer
  • ADDITIVE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090092911
    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 where the charge transport layer contains at least one of an ammonium salt.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Andronique Ioannidis