Patents by Inventor Robert W. Hedrick

Robert W. Hedrick 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).

  • Publication number: 20180004102
    Abstract: Disclosed herein is a method for manufacturing a fluorinated structured organic film (FSOF) composition for a photoreceptor. The method includes combining a fluorinated diol, an electroactive segment and a solvent in a round bottom reactor. The reacted is heated, without mixing dissolve the fluorinated diol composition. The dissolved fluorinated diol composition is mixed to dissolve the electroactive segment while maintaining the reactor at a temperature of between 80 and 85° C. A catalyst and a leveling agent are added to the solution to initiate a pre-cure reaction. The pre-cure reaction proceeds for at least 2 hours at a temperature of between 80 and 85° C. The solution is cooled to room temperature and filtered.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Inventors: Gregory M. McGuire, Suxia Yang, Kimberly D. Nosella, Nan-Xing Hu, Edward C. Savage, Robert W. Hedrick
  • Publication number: 20180004103
    Abstract: Disclosed herein is an imaging member that includes a substrate, a charge generating layer, a charge transport layer; and an outermost layer comprising a structured organic film (SOF) comprising a fluorinated molecular building block and a hole molecular building block, wherein the fluorinated molecular building block is present in the SOF of the outermost layer in an amount of from about 1 weight percent to about 20 weight percent of the SOF.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Inventors: Gregory M. McGuire, Suxia Yang, Nan-Xing Hu, Edward C. Savage, Robert W. Hedrick
  • Patent number: 9851647
    Abstract: A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and a charge transport layer, and where the charge transport layer contains a mixture of a charge transport component and a polycarbonate AP.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: December 26, 2017
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan Dinh, Lanhui Zhang, Jimmy E. Kelly, Mark S. Thomas, Min-Hong Fu, Lin Ma, Markus R. Silvestri, Marc J. LiVecchi, Robert W. Hedrick, Linda L. Ferrarese
  • Publication number: 20160154327
    Abstract: Described herein is a photoreceptor having a substrate, a charge generating layer, a charge transport layer. The charge transport layer includes a polycarbonate-polyester copolymer binder and at least one charge transport material.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 2, 2016
    Inventors: Jin Wu, Kenny-tuan T. Dinh, Nancy Belknap, Lanhui Zhang, Than Sorn, Helen R. Cherniack, Lin Ma, Linda L. Ferrarese, Dennis J. Prosser, Marc J. Livecchi, Robert W. Hedrick
  • Patent number: 9052619
    Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising an overcoat layer which comprises a soluble filler that improves low surface energy and wear. The soluble filler is a silicone poly(ethylene glycol) ester which improves low surface energy and wear without negatively impacting electrical properties of the overcoat layer.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: June 9, 2015
    Assignee: XEROX CORPORATION
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Qi Ying Li, Lin Ma, Than Sorn, Marc J. LiVecchi, Linda L. Ferrarese, Robert W. Hedrick
  • Publication number: 20150111137
    Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising an overcoat layer which comprises a soluble filler that improves low surface energy and wear. The soluble filler is a silicone poly(ethylene glycol) ester which improves low surface energy and wear without negatively impacting electrical properties of the overcoat layer.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Applicant: XEROX CORPORATION
    Inventors: JIN WU, Kenny-Tuan T. Dinh, Qi Ying Li, Lin Ma, Than Sorn, Marc J. LiVecchi, Linda L. Ferrarese, Robert W. Hedrick
  • Patent number: 8883384
    Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising a binderless overcoat layer which exhibits substantially improved electrical performance, such as low residual potential and good electrical cyclic stability. The overcoat layer of the present embodiments is formed from a formulation comprising a small transport molecule, a crosslinking agent, an acid catalyst and a solvent.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: November 11, 2014
    Assignee: Xerox Corporation
    Inventors: Kenny-tuan T. Dinh, Edward C. Savage, Marc J. LiVecchi, Robert W. Hedrick, Linda L. Ferrarese, Sherri A. Toates, Stacy J. Kowsz
  • Patent number: 8785091
    Abstract: A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, a charge transport layer, and an optional protective coating, and where the charge transport layer contains a mixture of a charge transport component and a polyarylatecarbonate.
    Type: Grant
    Filed: April 13, 2013
    Date of Patent: July 22, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T Dinh, Terry L Street, Robert W Hedrick, Linda L Ferrarese, Than Sorn, Lanhui Zhang, Lin Ma, Stanley J Pietrzykowski, Jr.
  • Patent number: 8658337
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital printing, apparatuses. More particularly, the embodiments pertain to an improved electrophotographic imaging member comprising an overcoat layer which prevents image quality issues such as deletion. The overcoat layer comprises a phenolic triarylamine charge transport molecule, an aminoplast and a triamino triphenyl compound.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: February 25, 2014
    Assignee: Xerox Corporation
    Inventors: Kenny-tuan T. Dinh, Jin Wu, Linda L. Ferrarese, Robert W. Hedrick
  • Publication number: 20140023959
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital printing, apparatuses. More particularly, the embodiments pertain to an improved electrophotographic imaging member comprising an overcoat layer which prevents image quality issues such as deletion. The overcoat layer comprises a phenolic triarylamine charge transport molecule, an aminoplast and a triamino triphenyl compound.
    Type: Application
    Filed: July 18, 2012
    Publication date: January 23, 2014
    Applicant: XEROX CORPORATION
    Inventors: Kenny-tuan T. Dinh, Jin Wu, Linda L. Ferrarese, Robert W. Hedrick
  • Patent number: 8623578
    Abstract: A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and a charge transport layer, and where the charge transport layer contains a mixture of a charge transport component and a tetraaryl polycarbonate.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: January 7, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T Dinh, Than Sorn, Robert W Hedrick, Linda L Ferrarese, Marc J Livecchi, Lanhui Zhang, Lin Ma, Stanley J Pietrzykowski, Jr.
  • Patent number: 8617648
    Abstract: A method for treating a metal substrate or a metallized substrate of an imaging member including providing a metal or metallized substrate of an imaging member; treating the metal or metallized substrate with a sol-gel composition comprising a rare earth metal to form a passivation layer on the metal or metallized substrate using a sol-gel process.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: December 31, 2013
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Liang-Bih Lin, Robert W. Hedrick, Rachel Lee Brown
  • Publication number: 20130330665
    Abstract: A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and a charge transport layer, and where the charge transport layer contains a mixture of a charge transport component and a tetraaryl polycarbonate.
    Type: Application
    Filed: June 6, 2012
    Publication date: December 12, 2013
    Applicant: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Than Sorn, Robert W. Hedrick, Linda L. Ferrarese, Marc J. Livecchi, Lanhui Zhang, Lin Ma, Stanley J. Pietrzykowski, JR.
  • Patent number: 8507161
    Abstract: A photoconductor containing an optional supporting substrate layer, a photogenerating layer, a charge transport layer, and a top overcoat layer of a phenolic compound, a phosphite compound, an optional charge transport compound, an optional melamine resin, an optional acrylated polyol, and an optional catalyst.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: August 13, 2013
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Terry L. Street, Robert W. Hedrick, Linda L. Ferrarese, Brian P. Gilmartin
  • Patent number: 8409773
    Abstract: A photoconductor that includes, for example, a substrate; an undercoat layer thereover wherein the undercoat layer contains a metal oxide, and a mixture of an epoxy resin and a carboxyl resin; a photogenerating layer; and at least one charge transport layer.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: April 2, 2013
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Marc J Livecchi, Robert W Hedrick, John J. Wilbert
  • Publication number: 20130017479
    Abstract: A photoconductor containing an optional supporting substrate layer, a photogenerating layer, a charge transport layer, and a top overcoat layer of a phenolic compound, a phosphite compound, an optional charge transport compound, an optional melamine resin, an optional acrylated polyol, and an optional catalyst.
    Type: Application
    Filed: July 15, 2011
    Publication date: January 17, 2013
    Applicant: XEROX CORPORATION
    Inventors: Jin WU, Kenny-Tuan T. DINH, Terry L. STREET, Robert W. HEDRICK, Linda L. FERRARESE, Brian P. GILMARTIN
  • Patent number: 7947418
    Abstract: A photoconductor that includes, for example, a substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide dispersed in a mixture of a sulfonamide formaldehyde resin and a phenolic formaldehyde resin; a photogenerating layer, and at least one charge transport layer.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 24, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Marc J Livecchi, Robert W Hedrick, Emily K Redman
  • Patent number: 7923188
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is partially crosslinked, wherein the crosslinking is achieved by incorporating a small amount of compatible thermalsetting resins into the layer. Incorporation of these resins have been shown to increase charge transport life.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: April 12, 2011
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Robert W. Hedrick, Linda Ferrarese
  • Patent number: 7838187
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is dual-dopant, wherein operating life improvement is achieved by incorporating a small amount of compatible thermalsetting resin and polyhedral oligomeric silsesquioxane into the layer. Incorporation of these resins have been shown to increase charge transport life.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: November 23, 2010
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Robert W. Hedrick, Gary A. Batt, M. John Hinckel
  • Patent number: 7799495
    Abstract: A photoconductor containing a photogenerating layer, and at least one charge transport layer, and a top polymeric overcoat layer in contact with, and contiguous to the charge transport layer, and which overcoat layer includes an indium tin oxide.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: September 21, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan Dinh, John F Yanus, Adal Tecleab, June Shujun Peng, Marc J Livecchi, Linda L Ferrarese, Edward C Savage, Gary A Batt, John J Wilbert, Robert W Hedrick