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).

  • CHARGE TRANSPORT LAYER AND COATING SOLUTION FOR FORMING THE SAME
    Publication number: 20110236811
    Abstract: The present embodiments are generally directed to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. More particularly, the embodiments pertain to an electrophotographic imaging member having a novel charge transport layer formed from a coating solution that is doped with specific solvents which provides a charge transport layer with superior electrical properties, and methods for making the same. In particular, the coating solution is doped with a small amount of an aprotic organic solvent.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 29, 2011
    Applicant: XEROX CORPORATION
    Inventors: Edward F. Grabowski, Yuhua Tong
  • 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
  • Carbazole containing charge transport layer photoconductors
    Patent number: 7989127
    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: Grant
    Filed: April 30, 2008
    Date of Patent: August 2, 2011
    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
  • RELEASABLE UNDERCOAT LAYER AND METHODS FOR USING THE SAME
    Publication number: 20110183244
    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: Application
    Filed: January 22, 2010
    Publication date: July 28, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Yuhua Tong, Helen R. Cherniack, Edward F. Grabowski, Kent J. Evans, Nancy L. Belknap
  • RELEASABLE UNDERCOAT LAYER AND METHODS FOR USING THE SAME
    Publication number: 20110180099
    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: Application
    Filed: January 22, 2010
    Publication date: July 28, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Yuhua Tong, Helen R. Cherniack, Edward F. Grabowski, Kent J. Evans, Nancy L. Belknap
  • LOW FRICTION ELECTROSTATOGRAPHIC IMAGING MEMBER
    Publication number: 20110176831
    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: March 29, 2011
    Publication date: July 21, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Kathleen M. Carmichael, Stephen T. Avery, Satish Parikh
  • UNDERCOAT LAYER AND IMAGING MEMBERS COMPRISING SAME
    Publication number: 20110151363
    Abstract: Disclosed are undercoat layers comprising a metal oxide, a polymer, and a citrate of Formula (I): wherein R1 is H, alkyl, or COR?; wherein R? is alkyl; and wherein R2, R3, and R4 are independently alkyl. The undercoat layers are useful in imaging members because they are easily separated from the substrate. This reduces the number of steps necessary to reclaim the substrate.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 23, 2011
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Jin Wu, Robert P. Altavela, Edward F. Grabowski, Kent J. Evans, Adilson P. Ramos, Nancy L. Belknap, Helen R. Cherniack
  • IMAGING MEMBERS COMPRISING FLUOROKETONE
    Publication number: 20110136049
    Abstract: Improved electrophotographic imaging members which pertain to the incorporation of a fluoroketone into the charge transport layer to achieve a structurally simplified flexible electrophotographic imaging member that remains flat without the need for an anticurl back coating layer. The imaging member is both more slippery and has a reduced coefficient of friction, thus extending service life.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 9, 2011
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Edward F. Grabowski, Jin Wu, Robert C.U. Yu
  • Low friction electrostatographic imaging member
    Patent number: 7943278
    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: April 7, 2008
    Date of Patent: May 17, 2011
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Kathleen M. Carmichael, Stephen T. Avery, Satish Parikh
  • GELATIN RELEASE LAYER AND METHODS FOR USING THE SAME
    Publication number: 20110104602
    Abstract: The disclosed embodiments are directed to a method for removing photoreceptor coatings from a rigid substrate, wherein the photoreceptor coatings disposed over a substrate of an electrophotographic photoreceptor, in order to recover it for re-use in photoreceptor manufacturing. More specifically, the invention discloses a photoreceptor substrate recovery methodology that includes the creation of an inner release layer over the substrate and followed by subjecting the rejected or used electrophotographic photoreceptor to a step of soaking in a non-toxic and environmentally-friendly stripping solution that separates the coatings from the substrate.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 5, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
  • SILANE RELEASE LAYER AND METHODS FOR USING THE SAME
    Publication number: 20110104603
    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 present embodiments discloses a photoreceptor coatings removal process comprises subjecting an electrophotographic photoreceptor to a stripping solution that separates the coatings from the substrate.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 5, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
  • Pyrazine containing charge transport layer photoconductors
    Patent number: 7923185
    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: Grant
    Filed: April 30, 2008
    Date of Patent: April 12, 2011
    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
  • Additive containing charge transport layer photoconductors
    Patent number: 7914960
    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: Grant
    Filed: October 9, 2007
    Date of Patent: March 29, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Edward F Grabowski, Kent J Evans, Andronique Ioannidis
  • Additive containing photogenerating layer photoconductors
    Patent number: 7901856
    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: Grant
    Filed: October 9, 2007
    Date of Patent: March 8, 2011
    Assignee: XEROX Corporation
    Inventors: Jin Wu, Edward F Grabowski, Kent J Evans, Sherri A Colon, Dale S Renfer
  • FLUORINATED NANO DIAMOND ANTICURL BACKSIDE COATING (ACBC) PHOTOCONDUCTORS
    Publication number: 20100330479
    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: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Lanhui Zhang, Lin Ma
  • PHOTORECEPTOR WITH RELEASE LAYER
    Publication number: 20100323288
    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: Application
    Filed: June 17, 2009
    Publication date: December 23, 2010
    Applicant: XEROX CORPORATION
    Inventors: Robert P. Altavela, Yuhua Tong, Edward F. Grabowski, Kent J. Evans, Adilson Ramos, Nancy Belknap, Helen R. Cherniack
  • PHOTORECEPTOR INTERFACIAL LAYER
    Publication number: 20100316410
    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: Application
    Filed: June 16, 2009
    Publication date: December 16, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Edward F. Grabowski, Jin Wu
  • Imaging belt with nanotube backing layer, and image forming devices including the same
    Patent number: 7851111
    Abstract: An imaging belt comprises a substrate layer, an outer image layer and an inner anti-curl backing layer. The inner anti-curl backing layer, in turn, includes one or more carbon nanotubes disposed therein, together with an exposed backing layer surface. An image forming device includes the imaging belt. The image forming device is arranged to conductively couple the backing layer surface to an included ground source by means of one or more included conducting backer bars, one or more included grounding brushes, or any combination of included conducting backer bars and grounding brushes.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: December 14, 2010
    Assignee: Xerox Corporation
    Inventors: Dan A. Hays, Edward F. Grabowski, Samir Kumar
  • CHARGE BLOCKING LAYER AND COATING SOLUTION FOR FORMING THE SAME
    Publication number: 20100310977
    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 charge blocking layer formed from an aqueous-based coating solution which exhibits improved shelf life 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: Application
    Filed: June 4, 2009
    Publication date: December 9, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Edward F. Grabowski
  • INTERFACIAL LAYER AND COATING SOLUTION FOR FORMING THE SAME
    Publication number: 20100297543
    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: Application
    Filed: May 22, 2009
    Publication date: November 25, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Edward F. Grabowski, Robert D. Bayley