Patents Represented by Attorney John H. Faro
  • Patent number: 4030991
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: June 21, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4030992
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: June 21, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4028203
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: June 7, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4025710
    Abstract: Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## wherein R is hydrogen or methyl;R' is hydrogen or methyl;R" is hydrogen or methyl;R'" is selected from the group consisting of --NO.sub.2, halogen, --CN and --CF.sub.3 ;X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1-4 carbon atoms and phenyl;a and b can range from 0-4; andn and m can range from about 5 to about 95 percent.The polymeric compositions prepared according to this method are suitable for use in electrophotography either alone as the primary photoresponsive entity or in combination with other photoconductive materials.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: May 24, 1977
    Assignee: Xerox Corporation
    Inventors: Milan Stolka, Sam R. Turner
  • Patent number: 4021236
    Abstract: A deformation imaging system including an imaging member comprising a layer of a surface deformable material, a layer of an elastomer material, and means for establishing an imagewise electrical field across at least the surface deformable material layer and/or the elastomer layer. Embodiments wherein the surface deformable material layer and the elastomer layer are adjacent each other and embodiments wherein these layers are separated from each other are described. Various techniques for subjecting the imaging members to an electrical field and imaging methods utilizing the imaging members are also disclosed.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: May 3, 1977
    Assignee: Xerox Corporation
    Inventors: Nicholas K. Sheridon, Dorian Kermisch
  • Patent number: 4019816
    Abstract: Coating applicator system comprising a stationary blade and a reciprocating applicator blade. A quantity of photoelectrophoretic ink is supplied to the surface of the stationary blade when the applicator plate is cammed out. When the applicator plate is cammed in, the applicator plate moves the ink on the stationary coater blade into the coating gap to supply a uniform quantity of ink to the surface to be coated.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: April 26, 1977
    Assignee: Xerox Corporation
    Inventor: John S. Bernhard
  • Patent number: 4018602
    Abstract: Method for in situ preparation of photoconductive composite having an electronically active hole transport layer, an electronically active electron transport layer and a layer of charge transfer complex sandwiched therebetween. According to this method, a film containing either an electron donor or an electron acceptor is initially formed directly on a supportive (preferably conductive) substrate. After this film has been allowed to set, a second film is solvent coated on the previously formed film. The solvent used in preparation of the second film causes softening of the previously formed layer which permits interaction of an electron acceptor or an electronic donor in the casting solvent with an electron acceptor or an electron donor of the previously formed layer, thereby forming a charge transfer complex at the interface of these two films. Only a portion of the donor and acceptor interact along this common boundary during the formation of the photoconductive composite.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: April 19, 1977
    Assignee: Xerox Corporation
    Inventor: Joseph Y. C. Chu
  • Patent number: 4017311
    Abstract: There are described novel yellow compounds which are represented by the formula ##STR1## wherein X is a member selected from the group consisting of ##STR2## The compounds may be used for various applications and preferably are utilized as imaging particles in the photoelectrophoretic imaging method.
    Type: Grant
    Filed: November 10, 1975
    Date of Patent: April 12, 1977
    Assignee: Xerox Corporation
    Inventor: Robert J. Gruber
  • Patent number: 4016058
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organoselenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: April 5, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4014768
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: March 29, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4013623
    Abstract: Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## wherein R is hydrogen or methyl;R' is hydrogen or methyl;R" is hydrogen or methyl;R'" is alkyl of 1-10 carbon atoms;R'.sup.v is selected from the group consisting of --NO.sub.2, halogen, --CN and --CF.sub.3 ;X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl or 1-4 carbon atoms and phenyl;Z is oxygen or dicyanomethylene;a and b can range from 0-4; andn and m can range from about 5 to about 95 percent.The polymeric compositions prepared according to this method are suitable for use in electrophotography either alone as the primary photoresponsive entity or in combination with other photoconductive materials.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: March 22, 1977
    Assignee: Xerox Corporation
    Inventors: Sam R. Turner, Milan Stolka
  • Patent number: 4013530
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: March 22, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4013528
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organoselenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: March 22, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4013529
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: March 22, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4012252
    Abstract: 3-Bromo-N-2"-pyridyl-8,13-dioxodinaphtho-(2,1-b;2',3'-d)-furan-6-carboxamid e is described as a new composition of matter along with its use in electrophotographic and photoelectrophoretic imaging processes.
    Type: Grant
    Filed: September 30, 1975
    Date of Patent: March 15, 1977
    Assignee: Xerox Corporation
    Inventors: Robert J. Gruber, Nicholas J. Germano
  • Patent number: 4012251
    Abstract: Multi-layered electrophotographic imaging member having a composite photoconductive insulating film wherein one layer of said film comprises a photoconductive material capable of substantial spectral response in the visible region of the electromagnetic spectrum, and a second layer of an electronically active insulating polymeric material, contiguous with said photoconductive layer, which is transparent, capable of facile transport of electrons which are injected into it upon photoexcitation of the contiguous photoconductive layer and yet incapable of substantial spectral response within the wavelength of primary photoresponse of the contiguous photoconductive layer.
    Type: Grant
    Filed: May 22, 1975
    Date of Patent: March 15, 1977
    Assignee: Xerox Corporation
    Inventor: Sam R. Turner
  • Patent number: 4007043
    Abstract: Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## wherein R is hydrogen or methyl;R' is hydrogen or methyl;R" is hydrogen or methyl;R'" is selected from the group consisting of --NO.sub.2, halogen, --CN and --CF.sub.3 ;X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1 - 4 carbon atoms and phenyl;a and b can range from 0 - 4; andn and m can range from about 5 to about 95 percent.The polymeric compositions prepared according to this method are suitable for use in electrophotography either alone as the primary photoresponsive entity or in combination with other photoconductive materials.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: February 8, 1977
    Assignee: Xerox Corporation
    Inventors: Milan Stolka, Sam R. Turner
  • Patent number: 4007101
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organoselenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: February 8, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, Wolfgang H. H. Gunther
  • Patent number: 4007100
    Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: February 8, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, W. H. H. Gunther
  • Patent number: 4006017
    Abstract: Photoconductive composition comprising an insulating polymeric matrix and a compound of the formula ##STR1## wherein R is hydrogen or nitrile; and R', R" and R'" are independently selected from an aliphatic hydrocarbon radical having from about 1 to about 10 carbon atoms; phenyl; or substituted phenyl, said phenyl substituents being capable of releasing electrons to relatively electron deficient centers within the compound; amino; diarylamino; dialkylamino or alkoxy; and n can range from 0 up to the potential number of positions of substitution on the aromatic ring system.These compositions have good spectral response in the visible region of the electromagnetic spectrum and are suitable for use in electrostatographic imaging members and methods.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: February 1, 1977
    Assignee: Xerox Corporation
    Inventors: David J. Williams, William W. Limburg, James M. Pearson