Patents by Inventor Ihor W. Tarnawskyj

Ihor W. Tarnawskyj 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: 7645399
    Abstract: An electrical component including an electrically conductive composition including a pyrrolized carbon-based material coated with a conductive polymer is disclosed.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: January 12, 2010
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Joseph A. Swift
  • Patent number: 7307112
    Abstract: The present invention relates to an electrical component, which has an electrically conductive composition that is stable at high temperatures, and includes a partially pyrolized carbon based powder filler and a host matrix. The present invention also relates to an electrophotographic system which further is stable at conventional ambient environmental use conditions, such as different humidity levels and/or ambient temperature ranges.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: December 11, 2007
    Assignee: Xerox Corporation
    Inventors: Joseph A. Swift, Ihor W. Tarnawskyj, T. Edwin Freeman, Edward B. Caruthers, Jr., Constance J. Thornton
  • Patent number: 7244485
    Abstract: A seamed flexible belt having a substrate and a seam having interlocking seam members, wherein the interlocking seam members are held together by an adhesive having polyamide and an optional electrically conductive filler, for use in electrostatographic, contact electrostatic, digital and other like printing machines.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: July 17, 2007
    Assignee: Xerox Corporation
    Inventors: Ralph A. Mosher, T. Edwin Freeman, Theodore Lovallo, Damodar M. Pai, John F. Yanus, Timothy J. Fuller, Markus R. Silvestri, Gerald M. Fletcher, Antonio DeCrescentis, Ihor W. Tarnawskyj
  • Patent number: 7105594
    Abstract: An adhesive having a resin selected from polyvinyl butyral resins, phenolic resins, epoxy resins, and mixtures thereof, and at least one type of filler such as a carbon filler, for use in seaming components useful in electrostatographic, contact electrostatic, digital and other like machines.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: September 12, 2006
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Joseph A. Swift, Christopher P. Manos, Theodore Lovallo
  • Patent number: 6948806
    Abstract: A polyimide film substrate pre-heater assembly is provided for pre-heating substrates in an image producing machine and includes (a) plural rollers including a drive roller; (b) a substrate path defining and heating assembly for defining a portion of substrate path; and (c) a belt assembly including a polyimide film belt forming a loop. The loop forms a substrate transport nip against the substrate path defining and heating assembly. The polyimide film belt includes a polyimide film support layer, a puzzle cut seam having inter-fitting teeth and receptacle members, and a fluoroelastomeric overcoat layer for filling and strengthening the puzzle cut seam, thereby preventing the inter-fitting teeth and receptacle members thereof from popping up when the loop is driven over relatively small diameter rollers.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: September 27, 2005
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Ralph A. Mosher, Laurence J. Lynd, David H. Pan, Eilleen R. Aviles
  • Patent number: 6761978
    Abstract: An adhesive having polyamide and an electrically conductive filler dispersed or contained therein, for use in bonding components of electrostatographic, contact electrostatic, digital and other like printing machines.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: July 13, 2004
    Assignee: Xerox Corporation
    Inventors: Ralph A. Mosher, T. Edwin Freeman, Theodore Lovallo, Damodar M. Pai, John F. Yanus, Timothy J. Fuller, Markus R. Silvestri, Gerald M. Fletcher, Antonio DeCrescentis, Ihor W. Tarnawskyj
  • Publication number: 20040114015
    Abstract: A polyimide film substrate pre-heater assembly is provided for pre-heating substrates in an image producing machine and includes (a) plural rollers including a drive roller; (b) a substrate path defining and heating assembly for defining a portion of substrate path; and (c) a belt assembly including a polyimide film belt forming a loop. The loop forms a substrate transport nip against the substrate path defining and heating assembly. The polyimide film belt includes a polyimide film support layer, a puzzle cut seam having inter-fitting teeth and receptacle members, and a fluoroelastomeric overcoat layer for filling and strengthening the puzzle cut seam, thereby preventing the inter-fitting teeth and receptacle members thereof from popping up when the loop is driven over relatively small diameter rollers.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 17, 2004
    Applicant: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Ralph A. Mosher, Laurence J. Lynd, David H. Pan, Eilleen R. Aviles
  • Patent number: 6638383
    Abstract: A process for seaming seamed component for use in seaming members useful in electrostatographic, contact electrostatic, digital and other like machines, including: a) compounding an adhesive; b) forming the adhesive in contact with a first side of the seam and the mutually mating members; c) contacting the adhesive and first side of the seam to a first heated clamp; d) contacting the second side of the seam to a second heated clamp; e) subjecting the adhesive in contact with the mutually mating members to a first cure at a first temperature to form a cured adhesive; and f) subjecting the cured adhesive to a second cure at a second temperature to form a dual-cured adhesive, wherein the second temperature is higher than the first temperature.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: October 28, 2003
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Joseph A. Swift, Christopher P. Manos, Theodore Lovallo, Gregory Toth
  • Patent number: 6620476
    Abstract: A nonbleeding bias charging member having an outer layer on a supporting substrate with fluorinated carbon and zinc oxide dispersed in the outer layer material, where bleeding of contaminants to imaging members is decreased or eliminated.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: September 16, 2003
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Kock-Yee Law, Martin A. Abkowitz, Frederick E. Knier, Jr., James B. Maliborski
  • Patent number: 6618570
    Abstract: A seamed flexible belt with interlocking seam members having an outer layer including a polyvinylbutyral and an isocyanate, or a polyurethane from the reaction of polyvinylbutyral and an isocyanate, for use in the xerographic, contact electrostatic, digital and other like machines.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: September 9, 2003
    Assignee: Xerox Corporation
    Inventors: Xiaoying (Elizabeth) Yuan, Ihor W. Tarnawskyj, Donald S. Stanton
  • Patent number: 6606476
    Abstract: A transfix member with a substrate, an optional intermediate layer, and thereover an outer layer having a fluoroelastomer and polyamino polysiloxane, and a heating member associated with the transfix member.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: August 12, 2003
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Xiaoying (Elizabeth) Yuan, Edward L. Schlueter, Jr., Ihor W. Tarnawskyj
  • Publication number: 20030144388
    Abstract: The present invention relates to an electrical component, which has an electrically conductive composition that is stable at high temperatures, and includes a partially pyrolized carbon based powder filler and a host matrix. The present invention also relates to an electrophotographic system which further is stable at conventional ambient environmental use conditions, such as different humidity levels and/or ambient temperature ranges.
    Type: Application
    Filed: January 31, 2002
    Publication date: July 31, 2003
    Applicant: Xerox Corporation.
    Inventors: Joseph A. Swift, Ihor W. Tarnawskyj, T. Edwin Freeman, Edward B. Caruthers, Constance J. Thornton
  • Publication number: 20030118381
    Abstract: A transfix member with a substrate, an optional intermediate layer, and thereover an outer layer having a fluoroelastomer and polyamino polysiloxane, and a heating member associated with the transfix member.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 26, 2003
    Applicant: Xerox Corporation
    Inventors: Kock-Yee Law, Xiaoying Elizabeth Yuan, Edward L. Schlueter, Ihor W. Tarnawskyj
  • Publication number: 20030113501
    Abstract: A seamed flexible belt having a substrate and a seam having interlocking seam members, wherein the interlocking seam members are held together by an adhesive having a polymer and plasticizer other than bis(dihydroxy diethylamino) triphenyl methane, bis(diethylamino) triphenyl methane, or dihydroxy tetraphenyl biphenylene diamine, for use in electrostatographic, contact electrostatic, digital and other like machines.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Applicant: Xerox Corporation
    Inventors: Ralph A. Mosher, Ihor W. Tarnawskyj, Constance J. Thornton
  • Patent number: 6576078
    Abstract: A process for flashless hot melt bonding of seamed flexible belts having a substrate and a seam having interlocking seam members, wherein the interlocking seam members are held together by an adhesive for use in electrostatographic, contact electrostatic, digital and other like machines, wherein the process includes: a) providing a release layer having an adhesive strip on a front side of the release layer, wherein the release layer is wider than the adhesive strip; b) providing the release layer containing the adhesive strip over the seam, wherein the front side of the release layer containing the adhesive strip is in contact with the seam and mutually mating members; c) thermal compressive adhesive bonding of the release layer to the seam, and d) optionally postcuring the seam; and wherein virtually no flashing of the adhesive outside the seam occurs.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: June 10, 2003
    Assignee: Xerox Corporation
    Inventors: Ralph A. Mosher, Ihor W. Tarnawskyj, Matthew J. Torpey, William M. Prest, Jr., Jodie L. Watson
  • Patent number: 6571939
    Abstract: A seamed flexible belt having a substrate, a seam having interlocking seam members, and an optional overcoat, wherein the interlocking seam members are held together by an adhesive having a resistive, hot-melt processible, thermosetting resin and carbon filler, for use in electrostatographic, contact electrostatic, digital and other like machines.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: June 3, 2003
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Joseph A. Swift, Christopher P Manos, Theodore Lovallo
  • Publication number: 20030079968
    Abstract: A seamed flexible belt having a substrate, a seam having interlocking seam members, and an optional overcoat, wherein the interlocking seam members are held together by an adhesive having a resistive, hot-melt processible, thermosetting resin and carbon filler, for use in electrostatographic, contact electrostatic, digital and other like machines.
    Type: Application
    Filed: November 25, 2002
    Publication date: May 1, 2003
    Applicant: Xerox Corporation.
    Inventors: Ihor W. Tarnawskyj, Joseph A. Swift, Christopher P. Manos, Theodore Lovallo
  • Publication number: 20030051810
    Abstract: A process for flashless hot melt bonding of seamed flexible belts having a substrate and a seam having interlocking seam members, wherein the interlocking seam members are held together by an adhesive for use in electrostatographic, contact electrostatic, digital and other like machines, wherein the process includes: a) providing a release layer having an adhesive strip on a front side of the release layer, wherein the release layer is wider than the adhesive strip; b) providing the release layer containing the adhesive strip over the seam, wherein the front side of the release layer containing the adhesive strip is in contact with the seam and mutually mating members; c) thermal compressive adhesive bonding of the release layer to the seam, and d) optionally postcuring the seam; and wherein virtually no flashing of the adhesive outside the seam occurs.
    Type: Application
    Filed: April 11, 2001
    Publication date: March 20, 2003
    Applicant: Xerox Corporation
    Inventors: Ralph A. Mosher, Ihor W. Tarnawskyj, Matthew J. Torpey, William M. Prest, Jodie L. Watson
  • Patent number: 6527105
    Abstract: A seamed flexible belt having a substrate, a seam having interlocking seam members, and an optional overcoat, wherein the interlocking seam members are held together by an adhesive having a resistive, hot-melt processible, thermosetting resin and carbon filler, for use in electrostatographic, contact electrostatic, digital and other like machines.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: March 4, 2003
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Joseph A. Swift, Christopher P. Manos, Theodore Lovallo
  • Publication number: 20020177645
    Abstract: An adhesive having polyamide and an electrically conductive filler dispersed or contained therein, for use in bonding components of electrostatographic, contact electrostatic, digital and other like printing machines.
    Type: Application
    Filed: April 11, 2001
    Publication date: November 28, 2002
    Applicant: Xerox Corporation
    Inventors: Ralph A. Mosher, T. Edwin Freeman, Theodore Lovallo, Damodar M. Pai, John F. Yanus, Timothy J. Fuller, Markus R. Silverstri, Gerald M. Fletcher, Antonio DeCrescentis, Ihor W. Tarnawskyj