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).
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Publication number: 20180004102Abstract: 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: ApplicationFiled: June 30, 2016Publication date: January 4, 2018Inventors: Gregory M. McGuire, Suxia Yang, Kimberly D. Nosella, Nan-Xing Hu, Edward C. Savage, Robert W. Hedrick
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Publication number: 20180004103Abstract: 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: ApplicationFiled: June 30, 2016Publication date: January 4, 2018Inventors: Gregory M. McGuire, Suxia Yang, Nan-Xing Hu, Edward C. Savage, Robert W. Hedrick
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Patent number: 9851647Abstract: 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: GrantFiled: October 13, 2016Date of Patent: December 26, 2017Assignee: Xerox CorporationInventors: 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
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Publication number: 20160154327Abstract: 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: ApplicationFiled: December 2, 2014Publication date: June 2, 2016Inventors: 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
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Patent number: 9052619Abstract: 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: GrantFiled: October 22, 2013Date of Patent: June 9, 2015Assignee: XEROX CORPORATIONInventors: Jin Wu, Kenny-Tuan T. Dinh, Qi Ying Li, Lin Ma, Than Sorn, Marc J. LiVecchi, Linda L. Ferrarese, Robert W. Hedrick
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Publication number: 20150111137Abstract: 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: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Applicant: XEROX CORPORATIONInventors: JIN WU, Kenny-Tuan T. Dinh, Qi Ying Li, Lin Ma, Than Sorn, Marc J. LiVecchi, Linda L. Ferrarese, Robert W. Hedrick
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Patent number: 8883384Abstract: 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: GrantFiled: September 25, 2009Date of Patent: November 11, 2014Assignee: Xerox CorporationInventors: Kenny-tuan T. Dinh, Edward C. Savage, Marc J. LiVecchi, Robert W. Hedrick, Linda L. Ferrarese, Sherri A. Toates, Stacy J. Kowsz
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Patent number: 8785091Abstract: 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: GrantFiled: April 13, 2013Date of Patent: July 22, 2014Assignee: Xerox CorporationInventors: 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.
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Patent number: 8658337Abstract: 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: GrantFiled: July 18, 2012Date of Patent: February 25, 2014Assignee: Xerox CorporationInventors: Kenny-tuan T. Dinh, Jin Wu, Linda L. Ferrarese, Robert W. Hedrick
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Publication number: 20140023959Abstract: 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: ApplicationFiled: July 18, 2012Publication date: January 23, 2014Applicant: XEROX CORPORATIONInventors: Kenny-tuan T. Dinh, Jin Wu, Linda L. Ferrarese, Robert W. Hedrick
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Patent number: 8623578Abstract: 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: GrantFiled: June 6, 2012Date of Patent: January 7, 2014Assignee: Xerox CorporationInventors: 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.
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Patent number: 8617648Abstract: 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: GrantFiled: February 1, 2006Date of Patent: December 31, 2013Assignee: Xerox CorporationInventors: Jin Wu, Liang-Bih Lin, Robert W. Hedrick, Rachel Lee Brown
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Publication number: 20130330665Abstract: 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: ApplicationFiled: June 6, 2012Publication date: December 12, 2013Applicant: Xerox CorporationInventors: 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.
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Patent number: 8507161Abstract: 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: GrantFiled: July 15, 2011Date of Patent: August 13, 2013Assignee: Xerox CorporationInventors: Jin Wu, Kenny-Tuan T. Dinh, Terry L. Street, Robert W. Hedrick, Linda L. Ferrarese, Brian P. Gilmartin
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Patent number: 8409773Abstract: 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: GrantFiled: February 27, 2009Date of Patent: April 2, 2013Assignee: Xerox CorporationInventors: Jin Wu, Marc J Livecchi, Robert W Hedrick, John J. Wilbert
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Publication number: 20130017479Abstract: 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: ApplicationFiled: July 15, 2011Publication date: January 17, 2013Applicant: XEROX CORPORATIONInventors: Jin WU, Kenny-Tuan T. DINH, Terry L. STREET, Robert W. HEDRICK, Linda L. FERRARESE, Brian P. GILMARTIN
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Patent number: 7947418Abstract: 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: GrantFiled: December 22, 2009Date of Patent: May 24, 2011Assignee: Xerox CorporationInventors: Jin Wu, Marc J Livecchi, Robert W Hedrick, Emily K Redman
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Patent number: 7923188Abstract: 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: GrantFiled: August 21, 2007Date of Patent: April 12, 2011Assignee: Xerox CorporationInventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Robert W. Hedrick, Linda Ferrarese
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Patent number: 7838187Abstract: 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: GrantFiled: August 21, 2007Date of Patent: November 23, 2010Assignee: Xerox CorporationInventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Robert W. Hedrick, Gary A. Batt, M. John Hinckel
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Patent number: 7799495Abstract: 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: GrantFiled: March 31, 2008Date of Patent: September 21, 2010Assignee: Xerox CorporationInventors: 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