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).

  • Patent number: 8268521
    Abstract: 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: Grant
    Filed: May 15, 2009
    Date of Patent: September 18, 2012
    Assignees: Fuji Xerox Co., Ltd., Xerox Corporation
    Inventors: Katsumi Nukada, Hirofumi Nakamura, Mitsuhide Nakamura, Koji Bando, Kenny-tuan T Dinh, Giuseppa Baranyi, Nan-Xing Hu, Michael Zak
  • Patent number: 8164089
    Abstract: 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: Grant
    Filed: October 8, 2009
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Nan-Xing Hu, Ping Liu, Hadi K. Mahabadi, Paul Smith, Giuseppa Baranyi
  • Patent number: 8080318
    Abstract: 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: Grant
    Filed: March 7, 2008
    Date of Patent: December 20, 2011
    Assignee: Xerox Corporation
    Inventors: Kathy L. De Jong, Nan-Xing Hu, Giuseppa Baranyi, Barkev Keoshkerian
  • Patent number: 8003288
    Abstract: 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: Grant
    Filed: March 4, 2008
    Date of Patent: August 23, 2011
    Assignee: Xerox Corporation
    Inventors: Kathy L De Jong, Nan-Xing Hu, Giuseppa Baranyi
  • Patent number: 7935465
    Abstract: 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: Grant
    Filed: March 3, 2008
    Date of Patent: May 3, 2011
    Assignee: Xerox Corporation
    Inventors: Kathy L. De Jong, Nan-Xing Hu, Giuseppa Baranyi
  • Publication number: 20110084252
    Abstract: 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: Application
    Filed: October 8, 2009
    Publication date: April 14, 2011
    Applicant: Xerox Corporation
    Inventors: Yiliang Wu, Nan-Xing Hu, Ping Liu, Hadi K. Mahabadi, Paul Smith, Giuseppa Baranyi
  • Publication number: 20100151366
    Abstract: 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: Application
    Filed: May 15, 2009
    Publication date: June 17, 2010
    Applicants: FUJI XEROX CO., LTD., XEROX CORPORATION
    Inventors: Katsumi NUKADA, Hirofumi NAKAMURA, Mitsuhide NAKAMURA, Koji BANDO, Kenny-tuan T. DINH, Giuseppa BARANYI, Nan-Xing HU, Michael ZAK
  • Publication number: 20090226828
    Abstract: 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: Application
    Filed: March 4, 2008
    Publication date: September 10, 2009
    Applicant: XEROX CORPORATION
    Inventors: Kathy L. DE JONG, Nan-Xing HU, Giuseppa BARANYI
  • Publication number: 20090226228
    Abstract: 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: Application
    Filed: March 7, 2008
    Publication date: September 10, 2009
    Applicant: XEROX CORPORATION
    Inventors: Kathy L. DE JONG, Nan-Xing HU, Giuseppa BARANYI, Barkev KEOSHKERIAN
  • Publication number: 20090220876
    Abstract: 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: Application
    Filed: March 3, 2008
    Publication date: September 3, 2009
    Applicant: XEROX CORPORATION
    Inventors: Kathy L. DE JONG, Nan-Xing HU, Giuseppa BARANYI
  • Patent number: 6194110
    Abstract: 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)propane
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: February 27, 2001
    Assignee: Xerox Corporation
    Inventors: Cheng-Kuo Hsiao, Ah-Mee Hor, Giuseppa Baranyi, H. Bruce Goodbrand
  • Patent number: 6165661
    Abstract: 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: Grant
    Filed: May 21, 1999
    Date of Patent: December 26, 2000
    Assignee: Xerox Corporation
    Inventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James M. Duff, Giuseppa Baranyi, C. Geoffrey Allen
  • Patent number: 6051351
    Abstract: 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: Grant
    Filed: May 21, 1999
    Date of Patent: April 18, 2000
    Assignee: Xerox Corporation
    Inventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James M. Duff, Giuseppa Baranyi, C. Geoffrey Allen
  • Patent number: 5521043
    Abstract: 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: Grant
    Filed: May 5, 1995
    Date of Patent: May 28, 1996
    Assignee: Xerox Corporation
    Inventors: Nancy A. Listigovers, Charles G. Allen, Trevor I. Martin, Gordon K. Hamer, Cheng-Kuo Hsiao, Giuseppa Baranyi
  • Patent number: 5330867
    Abstract: 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: Grant
    Filed: August 24, 1992
    Date of Patent: July 19, 1994
    Assignee: Xerox Corporation
    Inventors: Cheng-Kuo Hsiao, Ah-Mee Hor, James D. Mayo, Giuseppa Baranyi, Gregory J. Kovacs, Terry L. Bluhm, Zoran D. Popovic, B. W. Anissa Yeung
  • Patent number: 5283144
    Abstract: 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: Grant
    Filed: September 2, 1992
    Date of Patent: February 1, 1994
    Assignee: Xerox Corporation
    Inventors: Anthony T. Ward, George Liebermann, Ah-Mee Hor, Giuseppa Baranyi, Donald J. Teney
  • Patent number: 5155200
    Abstract: 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: Grant
    Filed: April 20, 1990
    Date of Patent: October 13, 1992
    Assignee: Xerox Corporation
    Inventors: 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
  • Patent number: 5100752
    Abstract: 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: Grant
    Filed: May 7, 1990
    Date of Patent: March 31, 1992
    Assignee: Xerox Corporation
    Inventors: Cheng-Kuo Hsaio, Ah-Mee Hor, Giuseppa Baranyi, Terry L. Bluhm, James F. Duff, George Liebermann, Eric B. Wasmund
  • Patent number: 5039584
    Abstract: 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: Grant
    Filed: February 9, 1990
    Date of Patent: August 13, 1991
    Assignee: Xerox Corporation
    Inventors: Peter G. Odell, Giuseppa Baranyi, Lupu Alexandru
  • Patent number: 5034296
    Abstract: 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: Grant
    Filed: April 3, 1989
    Date of Patent: July 23, 1991
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Giuseppa Baranyi, Lupu Alexandru