Patents by Inventor Nancy L. Belknap
Nancy L. Belknap 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: 20120088872Abstract: A photoreceptor undercoat for an electrostatographic imaging device containing a film-forming material, such as, a phenolic resin; a metal oxide, such as, a titanium oxide; and a sulfonamide, including that such sulfonamide facilitates removal of the undercoat from the photoreceptor substrate.Type: ApplicationFiled: October 6, 2010Publication date: April 12, 2012Applicant: XEROX CORPORATIONInventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack
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Patent number: 8153341Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide, a phenolic resin, and a phosphate; a photogenerating layer; and at least one charge transport layer.Type: GrantFiled: April 28, 2010Date of Patent: April 10, 2012Assignee: Xerox CorporationInventors: Yuhua Tong, Jin Wu, Nancy L Belknap, Helen R Cherniack, Marc J Livecchi
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Publication number: 20120052428Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover that contains a metal oxide, a phenolic resin, and a pentanediol ester; a photogenerating layer; and at least one charge transport layer.Type: ApplicationFiled: August 26, 2010Publication date: March 1, 2012Applicant: XEROX CORPORATIONInventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack, Marc J. Livecchi
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Publication number: 20110269062Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide, a phenolic resin, and a phosphate; a photogenerating layer; and at least one charge transport layer.Type: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Applicant: XEROX CORPORATIONInventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack, Marc J. Livecchi
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Publication number: 20110195353Abstract: 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: ApplicationFiled: February 10, 2010Publication date: August 11, 2011Applicant: XEROX CORPORATIONInventors: Nancy L. Belknap, Katlyn Mallory, Helen Cherniack, Edward F. Grabowski
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Publication number: 20110180099Abstract: 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: ApplicationFiled: January 22, 2010Publication date: July 28, 2011Applicant: XEROX CORPORATIONInventors: Jin Wu, Yuhua Tong, Helen R. Cherniack, Edward F. Grabowski, Kent J. Evans, Nancy L. Belknap
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Publication number: 20110183244Abstract: 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: ApplicationFiled: January 22, 2010Publication date: July 28, 2011Applicant: XEROX CORPORATIONInventors: Jin Wu, Yuhua Tong, Helen R. Cherniack, Edward F. Grabowski, Kent J. Evans, Nancy L. Belknap
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Publication number: 20110151363Abstract: 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: ApplicationFiled: December 17, 2009Publication date: June 23, 2011Applicant: XEROX CORPORATIONInventors: Yuhua Tong, Jin Wu, Robert P. Altavela, Edward F. Grabowski, Kent J. Evans, Adilson P. Ramos, Nancy L. Belknap, Helen R. Cherniack
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Publication number: 20110104602Abstract: 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: ApplicationFiled: November 5, 2009Publication date: May 5, 2011Applicant: XEROX CORPORATIONInventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
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Publication number: 20110104603Abstract: 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: ApplicationFiled: November 5, 2009Publication date: May 5, 2011Applicant: XEROX CORPORATIONInventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
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Patent number: 7745082Abstract: A photoreceptor drum is disclosed with a charge transport layer comprising a substituted terphenyl diamine having the structure of Formula (I): wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl having from 1 to 10 carbon atoms, halogen, and phenyl; and wherein at least one of R1 and R2 is not hydrogen.Type: GrantFiled: August 9, 2007Date of Patent: June 29, 2010Assignee: Xerox CorporationInventors: Nancy L. Belknap, John F. Yanus, Dale S. Renfer, Anthony M. Horgan, Kendra M. Giza
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Patent number: 7727689Abstract: A photoconductor containing an optional supporting substrate, a perylene photogenerating layer, and at least one silanol containing charge transport layer.Type: GrantFiled: August 30, 2006Date of Patent: June 1, 2010Assignee: Xerox CorporationInventors: Jin Wu, Nancy L. Belknap, Liang-Bih Lin
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Patent number: 7648810Abstract: An electrophotographic imaging member comprises a substrate, an electrophotographic imaging layer and an overcoat layer comprising a cross-linkable polymer and a hole transport material, wherein the overcoat layer provides at least one of solvent resistance and hydrocarbon resistance to the electrophotographic imaging layer.Type: GrantFiled: September 14, 2006Date of Patent: January 19, 2010Assignee: Xerox CorporationInventors: John F. Yanus, Kenny-Tuan T. Dinh, Dale S. Renfer, Nancy L. Belknap, Anthony M. Horgan
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Patent number: 7618758Abstract: A photoconductor containing an optional supporting substrate, a perylene silanol photogenerating layer, and at least one charge transport layer.Type: GrantFiled: August 30, 2006Date of Patent: November 17, 2009Assignee: Xerox CorporationInventors: Jin Wu, Nancy L. Belknap, Liang-Bih Lin
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Patent number: 7563549Abstract: Provided is an imaging member comprising a substrate, an undercoat layer (UCL), a charge generation layer, a charge transport layer, and an optional overcoat layer. The undercoat layer is formed from a single-phase UCL coating formulation comprising an organic titanate, a polymer containing active hydrogen, and an aminosilane. The UCL formulation has improved properties such as stability, processing convenience, and longer pot life etc. The UCL formulation can be used to manufacture an imaging member such as photoreceptor with improved properties such as stable, thick UCL coating, resistance to electrical failure, and PIDC independency on UCL thickness etc.Type: GrantFiled: May 20, 2005Date of Patent: July 21, 2009Assignee: Xerox CorporationInventors: Jin Wu, Yuhua Tong, Jennifer Y. Hwang, Liang-bih Lin, Andronique Ioannidis, Nancy L. Belknap, Timothy J. O'Brien, Anthony Uttaro, Jr.
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Publication number: 20090061335Abstract: 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 specific photoreceptor material package comprising an undercoat layer, a charge generation layer having a specific pigment blend, a long life charge transport layer, and an optional overcoat layer.Type: ApplicationFiled: August 28, 2007Publication date: March 5, 2009Applicant: Xerox CorporationInventors: Nancy L. Belknap, Lanhui Zhang, Kathryn A. Wallace, Jodie L. Watson
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Publication number: 20080280222Abstract: 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 specific photoreceptor material package comprising an undercoat layer, a charge generation layer comprising a single pigment in binder and having a narrow particle separation distance of the pigment particles, a long life charge transport layer, and an optional overcoat layer.Type: ApplicationFiled: February 20, 2008Publication date: November 13, 2008Applicant: XEROX CORPORATIONInventors: Nancy L. Belknap, Lanhui Zhang, Kathryn A. Wallace, Jodie L. Watson
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Publication number: 20080138724Abstract: A photoreceptor drum is disclosed with a charge transport layer comprising a substituted terphenyl diamine having the structure of Formula (I): wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl having from 1 to 10 carbon atoms, halogen, and phenyl; and wherein at least one of R1 and R2 is not hydrogen.Type: ApplicationFiled: August 9, 2007Publication date: June 12, 2008Applicant: Xerox CorporationInventors: Nancy L. Belknap, John F. Yanus, Dale S. Renfer, Anthony M. Horgan, Kendra M. Giza
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Publication number: 20080070137Abstract: An electrophotographic imaging member comprises a substrate, an electrophotographic imaging layer and an overcoat layer comprising a cross-linkable polymer and a hole transport material, wherein the overcoat layer provides at least one of solvent resistance and hydrocarbon resistance to the electrophotographic imaging layer.Type: ApplicationFiled: September 14, 2006Publication date: March 20, 2008Inventors: John F. Yanus, Kenny-Tuan T. Dinh, Dale S. Renfer, Nancy L. Belknap, Anthony M. Horgan
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Publication number: 20080057421Abstract: A photoconductor containing an optional supporting substrate, a perylene photogenerating layer, and at least one silanol containing charge transport layer.Type: ApplicationFiled: August 30, 2006Publication date: March 6, 2008Inventors: Jin Wu, Nancy L. Belknap, Liang-Bih Lin