Patents by Inventor Giuseppa Baranyi
Giuseppa Baranyi 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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Patent number: 8268521Abstract: According to an aspect of the invention, an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate is provided. In the electrophotographic photoreceptor, an outermost layer of the photosensitive layer containing a crosslinked product formed from at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH, an acidic substance, and at least one compound selected from the group consisting of compounds represented by the following formula (A) and compounds represented by the following formula (B).Type: GrantFiled: May 15, 2009Date of Patent: September 18, 2012Assignees: Fuji Xerox Co., Ltd., Xerox CorporationInventors: Katsumi Nukada, Hirofumi Nakamura, Mitsuhide Nakamura, Koji Bando, Kenny-tuan T Dinh, Giuseppa Baranyi, Nan-Xing Hu, Michael Zak
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Patent number: 8164089Abstract: Electronic devices, such as organic thin film transistors, with improved mobility are disclosed. The semiconducting layer comprises layers or striations of an organic semiconductor and graphene, including alternating layers/striations of such materials. The organic semiconductor and graphene layers interact well together because both materials form lamellar sheets. The presence of graphene enhances mobility by correcting molecular packing defects in the organic semiconductor layers, and the conductivity of graphene can be controlled. Finally, both materials are flexible, allowing for flexible semiconductor layers and transistors.Type: GrantFiled: October 8, 2009Date of Patent: April 24, 2012Assignee: Xerox CorporationInventors: Yiliang Wu, Nan-Xing Hu, Ping Liu, Hadi K. Mahabadi, Paul Smith, Giuseppa Baranyi
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Patent number: 8080318Abstract: An image fixing member includes a substrate; an optional intermediate layer over the substrate; and an outermost layer over the intermediate layer; wherein at least one of the intermediate layer and the outermost layer comprises a healing material encapsulated within nano- or micro-capsules, wherein the healing material is capable of retaining the function of the imaging fixing member.Type: GrantFiled: March 7, 2008Date of Patent: December 20, 2011Assignee: Xerox CorporationInventors: Kathy L. De Jong, Nan-Xing Hu, Giuseppa Baranyi, Barkev Keoshkerian
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Patent number: 8003288Abstract: Disclosed is a photoconductive member including a self-healing composite coating having a polymer matrix, a photoconductive component, a healing material encapsulated within nano- or microcapsules, and an optional catalyst, that is capable of repairing physical damage to the photoconductive member when the capsule ruptures. Also disclosed is photoconductive member including a substrate, an undercoat layer, a charge generating layer, a charge transport layer, and an optional protective overcoat layer; in which one layer of the photoconductive member further includes a healing material encapsulated within nano- or microcapsules and an optional catalyst, and that is capable or reparing physical damage to the photoconductive member when the capsule ruptures. Also disclosed is an imaging forming apparatus including same.Type: GrantFiled: March 4, 2008Date of Patent: August 23, 2011Assignee: Xerox CorporationInventors: Kathy L De Jong, Nan-Xing Hu, Giuseppa Baranyi
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Patent number: 7935465Abstract: Disclosed is an electrophotographic imaging member that includes a lubricant delivering coating having a polymer matrix, a charge transport component, and a lubricant encapsulated within nano- or microcapsules. Also disclosed is an imaging forming apparatus including a charging device, a toner developer device, a cleaning device, and a photoreceptor having a conductive substrate, a charge generating layer, a charge transport layer, and an optional overcoat layer, such that the outmost layer of the photoreceptor contains a lubricant encapsulated within nano- or microcapsules. Additionally provided is a method of forming an image with the disclosed electrophotographic imaging member.Type: GrantFiled: March 3, 2008Date of Patent: May 3, 2011Assignee: Xerox CorporationInventors: Kathy L. De Jong, Nan-Xing Hu, Giuseppa Baranyi
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Publication number: 20110084252Abstract: Electronic devices, such as organic thin film transistors, with improved mobility are disclosed. The semiconducting layer comprises layers or striations of an organic semiconductor and graphene, including alternating layers/striations of such materials. The organic semiconductor and graphene layers interact well together because both materials form lamellar sheets. The presence of graphene enhances mobility by correcting molecular packing defects in the organic semiconductor layers, and the conductivity of graphene can be controlled. Finally, both materials are flexible, allowing for flexible semiconductor layers and transistors.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: Xerox CorporationInventors: Yiliang Wu, Nan-Xing Hu, Ping Liu, Hadi K. Mahabadi, Paul Smith, Giuseppa Baranyi
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Publication number: 20100151366Abstract: According to an aspect of the invention, an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate is provided. In the electrophotographic photoreceptor, an outermost layer of the photosensitive layer containing a crosslinked product formed from at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH, an acidic substance, and at least one compound selected from the group consisting of compounds represented by the following formula (A) and compounds represented by the following formula (B).Type: ApplicationFiled: May 15, 2009Publication date: June 17, 2010Applicants: FUJI XEROX CO., LTD., XEROX CORPORATIONInventors: Katsumi NUKADA, Hirofumi NAKAMURA, Mitsuhide NAKAMURA, Koji BANDO, Kenny-tuan T. DINH, Giuseppa BARANYI, Nan-Xing HU, Michael ZAK
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Publication number: 20090226828Abstract: Disclosed is a photoconductive member including a self-healing composite coating having a polymer matrix, a photoconductive component, a healing material encapsulated within nano- or microcapsules, and an optional catalyst, that is capable of repairing physical damage to the photoconductive member when the capsule ruptures. Also disclosed is photoconductive member including a substrate, an undercoat layer, a charge generating layer, a charge transport layer, and an optional protective overcoat layer; in which one layer of the photoconductive member further includes a healing material encapsulated within nano- or microcapsules and an optional catalyst, and that is capable or reparing physical damage to the photoconductive member when the capsule ruptures. Also disclosed is an imaging forming apparatus including same.Type: ApplicationFiled: March 4, 2008Publication date: September 10, 2009Applicant: XEROX CORPORATIONInventors: Kathy L. DE JONG, Nan-Xing HU, Giuseppa BARANYI
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Publication number: 20090226228Abstract: An image fixing member includes a substrate; an optional intermediate layer over the substrate; and an outermost layer over the intermediate layer; wherein at least one of the intermediate layer and the outermost layer comprises a healing material encapsulated within nano- or micro-capsules, wherein the healing material is capable of retaining the function of the imaging fixing member.Type: ApplicationFiled: March 7, 2008Publication date: September 10, 2009Applicant: XEROX CORPORATIONInventors: Kathy L. DE JONG, Nan-Xing HU, Giuseppa BARANYI, Barkev KEOSHKERIAN
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Publication number: 20090220876Abstract: Disclosed is an electrophotographic imaging member that includes a lubricant delivering coating having a polymer matrix, a charge transport component, and a lubricant encapsulated within nano- or microcapsules. Also disclosed is an imaging forming apparatus including a charging device, a toner developer device, a cleaning device, and a photoreceptor having a conductive substrate, a charge generating layer, a charge transport layer, and an optional overcoat layer, such that the outmost layer of the photoreceptor contains a lubricant encapsulated within nano- or microcapsules. Additionally provided is a method of forming an image with the disclosed electrophotographic imaging member.Type: ApplicationFiled: March 3, 2008Publication date: September 3, 2009Applicant: XEROX CORPORATIONInventors: Kathy L. DE JONG, Nan-Xing HU, Giuseppa BARANYI
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Patent number: 6194110Abstract: A photoconductive imaging member containing a photogenerating layer comprised of a mixture of perylenes, wherein the mixture comprises, for example, (1) 1,3-bis(n-pentylimidoperyleneimido) propane (Formula A), 1,3-bis(2-methylbutylimido peryleneimido)propane (Formula B) and 1-(n-pentylimidoperyleneimido)-3-(2-methylbutylimidoperyleneimido)-propane (Formula C), and (2) an electron acceptor component Formula A 1,3-bis(n-pentylimidoperyleneimido)propane Formula B 1,3-bis(2-methylbutylimidoperyleneimido)propane Formula C 1-(n-pentylimidoperyleneimido)-3-(2-methylbutylimidoperyleneimido)propaneType: GrantFiled: July 13, 2000Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, Giuseppa Baranyi, H. Bruce Goodbrand
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Patent number: 6165661Abstract: A mixture comprised of at least two perylenes and wherein the mixture includes symmetrical perylenes, unsymmetrical perylenes, and unsymmetrical perylenes with dissimilar R.sub.1 and R.sub.2 terminal substituents. The perylene mixtures can be selected for photoconductive imaging members.Type: GrantFiled: May 21, 1999Date of Patent: December 26, 2000Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James M. Duff, Giuseppa Baranyi, C. Geoffrey Allen
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Patent number: 6051351Abstract: Photoconductive imaging members comprised of a mixture of dimeric perylenes as a charge generator, wherein said mixture comprises at least perylenes encompassed by the following formulas, or mixtures thereof ##STR1## wherein R is hydrogen, alkyl, cycloalkyl, oxaalkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl; and X is a symmetrical bridging moiety, and X--Y represents an unsymmetrical bridging moiety.Type: GrantFiled: May 21, 1999Date of Patent: April 18, 2000Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James M. Duff, Giuseppa Baranyi, C. Geoffrey Allen
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Patent number: 5521043Abstract: A photoconditive imaging member comprised of a supporting substrate, a photogenerating layer comprised of a photogenerating pigment, or photogenerating pigments dispersed in a polystyrene/poly(methacrylic acid) (A.sub.n -B.sub.m) block copolymer wherein A is the anchoring block, B is the steric stabilizing block, and n and m represent the number of segments; and a charge transport layer.Type: GrantFiled: May 5, 1995Date of Patent: May 28, 1996Assignee: Xerox CorporationInventors: Nancy A. Listigovers, Charles G. Allen, Trevor I. Martin, Gordon K. Hamer, Cheng-Kuo Hsiao, Giuseppa Baranyi
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Patent number: 5330867Abstract: A layered imaging member comprised of a photogenerating layer of titanyl phthalocyanine prepared by depositing amorphous titanyl phthalocyanine on a substrate maintained at a temperature of from below 25.degree. to about minus 30.degree. C.; and contacting the substrate product with an aliphatic alcohol.Type: GrantFiled: August 24, 1992Date of Patent: July 19, 1994Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James D. Mayo, Giuseppa Baranyi, Gregory J. Kovacs, Terry L. Bluhm, Zoran D. Popovic, B. W. Anissa Yeung
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Patent number: 5283144Abstract: A photoreceptor includes a charge generating layer having: 1) a photogenerating pigment purified by sublimation at a pressure not greater than 10.sup.-3 Torr and subsequent condensation of the photogenerating pigment at a temperature less than about 100.degree. C.; and 2) a film-forming binder.Type: GrantFiled: September 2, 1992Date of Patent: February 1, 1994Assignee: Xerox CorporationInventors: Anthony T. Ward, George Liebermann, Ah-Mee Hor, Giuseppa Baranyi, Donald J. Teney
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Patent number: 5155200Abstract: A polyarylamine polymer represented by formula ##STR1## wherein: n is between about 5 and about 5,000, or 0 if p>0,o is between about 0 and about 5,000, or is 0 if p>0 or n=0,p is between about 2 and about 100, or is 0 if n>0,X' and X" are indendently selected from a group having bifunctional linkages,Q is a divalent group derived from certain hydroxy terminated arylamine reactants,Q' is a divalent group derived from a hydroxy terminated polyarylamine containing the group defined for Q and having a weight average molecular weight between about 1000 and about 80,000and the weight average molecular weight of the polyarylamine polymer is between about 10,000 and about 1,000,000.Type: GrantFiled: April 20, 1990Date of Patent: October 13, 1992Assignee: Xerox CorporationInventors: William W. Limburg, Dale S. Renfer, John F. Yanus, Jean M. Frechet, Sylvie Gauthier, Dasarao K. Murti, Giuseppa Baranyi, Zoran D. Popovic, Rafik O. Loutfy
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Patent number: 5100752Abstract: A process for the preparation of x-metal free phthalocyanine which comprises (i) initially preparing a mixture of alpha- and x-metal free phthalocyanines from alpha-phthalocyanine with a grinding or mixing device, (ii) converting the above mixture to x-metal free phthalocyanine by the addition of an organic solvent, (iii) separating the x-metal free phthalocyanine therefrom, and thereafter washing the x-metal free phthalocyanine with a basic solution.Type: GrantFiled: May 7, 1990Date of Patent: March 31, 1992Assignee: Xerox CorporationInventors: Cheng-Kuo Hsaio, Ah-Mee Hor, Giuseppa Baranyi, Terry L. Bluhm, James F. Duff, George Liebermann, Eric B. Wasmund
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Patent number: 5039584Abstract: A process for the purification of polycarbonates or copolymers thereof containing titanium catalyst residues, which comprises mixing a polycarbonate or copolymers thereof with a solvent; adding to the formed solution mixture a complexing component; admixing the resulting mixture with water; and subsequently separating the polycarbonate or copolymer product therefrom.Type: GrantFiled: February 9, 1990Date of Patent: August 13, 1991Assignee: Xerox CorporationInventors: Peter G. Odell, Giuseppa Baranyi, Lupu Alexandru
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Patent number: 5034296Abstract: A layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith a hole transporting layer comprised of fluorene charge transport polyesters of the following formulas: ##STR1## where A, B, Z are independently selected from a group of bifunctional groups; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y are mole fractional numbers wherein x is greater than 0, and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.Type: GrantFiled: April 3, 1989Date of Patent: July 23, 1991Assignee: Xerox CorporationInventors: Beng S. Ong, Giuseppa Baranyi, Lupu Alexandru