Patents by Inventor John F. Yanus

John F. Yanus 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).

  • Publication number: 20040067427
    Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a synthesized mixture of
    Type: Application
    Filed: October 8, 2002
    Publication date: April 8, 2004
    Applicant: Xerox Corporation
    Inventors: Yuhua Tong, John F. Yanus, Timothy J. Fuller, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
  • Publication number: 20040063829
    Abstract: A composition having a trisamino triphenyl compound and a layer composition having a trisamino triphenyl compound and a polyamide.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Applicant: Xerox Corporation
    Inventors: Timothy J. Fuller, Kenny-Tuan T. Dinh, John F. Yanus, Yuhua Tong, Markus R. Silvestri, Dale S. Renfer
  • Publication number: 20040063016
    Abstract: An imaging member having a substrate, a charge transport layer having charge transport materials dispersed therein, and an overcoat layer comprising trisamino triphenyl compound.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Applicant: Xerox Corporation.
    Inventors: Timothy J. Fuller, Kenny-Tuan T. Dinh, John F. Yanus, Yuhua Tong, Markus R. Silvestri, Dales S. Renfer
  • Publication number: 20040018439
    Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a poly(phenylsilsesquioxane), molecule, and a film forming binder.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 29, 2004
    Applicant: Xerox Corporation
    Inventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Cindy C. Chen, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
  • Patent number: 6677090
    Abstract: A charge transport layer for an imaging member comprising a charge transport material with a single carbon cored dendrimeric, star-like molecular structure not exhibiting early onset of charge transport layer fatigue cracking. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: January 13, 2004
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, John F. Yanus, Timothy J. Fuller, Alexander N. Klymachyov, Min-Hong Fu
  • Patent number: 6669850
    Abstract: A purification process composed of: contacting a contaminated composition including an optional fluid, a polymer, and an impurity with an adsorbent composition including an adsorbent, wherein the adsorbent is selected from the group consisting of an alumina and a magnesium sulfate, wherein a portion of the impurity binds to the adsorbent, wherein the polymer is a polycarbonate, a carbazole, a polyarylate, or a copolyester having the formula where n is the degree of polymerization.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: December 30, 2003
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, John F. Yanus, Markus R. Silvestri, Damodar M. Pai, Samuel Kaplan, Raymond K. Crandall, Kathleen M. Carmichael, David J. Maty
  • Publication number: 20030113646
    Abstract: An imaging method utilizing an imaging member containing a supporting substrate, a layer of a charge carrier injecting surface, a hole blocking layer, an optional adhesive layer, a layer of a charge carrier transport material, a layer of an charge carrier generating material, an optional charge trapping layer, a crossed linked silicone rubber, and an electrically insulating overcoating layer. The member is first charged with electrostatic charges of a first polarity, charged a second time with electrostatic charges of a polarity opposite to said first polarity in order to substantially neutralize the charges residing on the electrically insulating surface of the member and exposed to an imagewise pattern of activating electromagnetic radiation whereby an electrostatic latent image is formed. The electrostatic latent image may be developed to form a visible image which may be transferred to a receiver member. The imaging member may be reused after erasure and cleaning.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Applicant: Xerox Corporation
    Inventors: Merlin E. Scharfe, Richard L. Schank, William W. Limburg, Damodar M. Pai, Dale S. Renfer, John F. Yanus, Paul J. DeFeo
  • 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
  • Publication number: 20020150408
    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: Application
    Filed: April 11, 2001
    Publication date: October 17, 2002
    Applicant: 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: 20020076632
    Abstract: Aryldiamine charge transporting molecules for a charge transport layer of an imaging member have a higher mobility by increasing the number of phenyl groups between the nitrogen atoms of the aryldiamine.
    Type: Application
    Filed: October 15, 2001
    Publication date: June 20, 2002
    Applicant: Xerox Corporation
    Inventors: John F. Yanus, Damador M. Pai, Markus R. Silvestri, Timothy J. Fuller, Andronique Ioannidis
  • Patent number: 6361913
    Abstract: An electrophotographic imaging member comprising a substrate, a charge generating layer, a charge transport layer, and an overcoat layer comprising a small molecule hole transporting triphenylmethane having at least one hydroxy functional group and a polyamide film forming binder capable of forming hydrogen bonds with the hydroxy functional groups of the hydroxy triphenyl methane. This overcoat layer may be fabricated using an alcohol solvent. This electrophotographic imaging member may be utilized in an electrophotographic imaging process.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: March 26, 2002
    Assignee: Xerox Corporation
    Inventors: Damodar M. Pai, John F. Yanus
  • Patent number: 6340528
    Abstract: A donor member, useful in ionographic or electrophotographic apparatuses and preferably useful in hybrid scavengeless development units, has a substrate and an oxidized transport coating thereover. The oxidized transport coating includes a polymer binder, charge transporting molecules and one or more oxidizing agents. The polymer binder of the donor roll coating preferably includes one of (1) a crosslinked polymer with charge transporting molecules dispersed therein, or (2) a crosslinked polyamide binder with hydroxy charge transport molecules dispersed therein. The donor roll is preferably included in a printing machine that develops latent images formed on a photoconductive member.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: January 22, 2002
    Assignee: Xerox Corporation
    Inventors: Bing R. Hsieh, Yuan Yu, Timothy J. Fuller, John F. Yanus, Damodar M. Pai, Heiko Rommelmann, Allen J. Thompson, Donald S. Stanton, Michelle L. Schlafer, Alan R. Kuntz, Ann M. Kazakos, William H. Wayman, Steven C. Hart
  • Patent number: 6291125
    Abstract: A terpolymer represented by formula is useful in particular in electrophotographic imaging members.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: September 18, 2001
    Assignee: Xerox Corporation
    Inventors: Dale S. Renfer, John F. Yanus, William W. Limburg, Damodar M. Pai, Paul J. DeFeo, Richard L. Schank
  • Patent number: 6261730
    Abstract: A flexible electrostatographic imaging member including at least one photographic imaging layer, a support layer, and an anticurl back layer having an exposed surface including a cross linked phenoxy resin at the exposed surface, the phenoxy resin being formed from a solution including cross linkable solvent soluble phenoxy resin containing hydroxyl groups attached to carbon atoms, an acid having a pKa less than about 3, a cross linking agent selected from the group including a formaldehyde generating cross linking agent, an alkoxylated cross linking agent, a methylolamine cross linking agent and mixtures thereof, and a liquid selected from the group including solvents, diluent and mixtures thereof.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: July 17, 2001
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Timothy J. Fuller, Damodar M. Pai, William W. Limburg, John A. Bergfjord, Sr., Dale S. Renfer
  • Patent number: 6242144
    Abstract: An electrophotographic imaging member including a substrate, a charge generating layer, and a charge transport layer including a hole transport host material, a trace amount of a shallow trap dopant having a shallow trap electrochemical oxidation potential between about 0.02 volt and about 1.5 volts lower than that of the hole transport host and a film forming binder.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Markus R. Silvestri, John F. Yanus, Richard H. Nealey, Harold F. Hammond, Cindy C. Chen, Kenny-tuan T. Dinh, James M. Markovics
  • Patent number: 6207334
    Abstract: An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer, and an overcoat layer including a polyvinyl butyral film forming binder, a cross linked polyamide film forming binder, and a hole transport material. A process for forming an overcoated imaging member is also disclosed.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: March 27, 2001
    Assignee: Xerox Corporation
    Inventors: Kenny-tuan T. Dinh, Timothy J. Fuller, Markus R. Silvestri, Paul J. Defeo, Damodar M. Pai, John F. Yanus, Robert W. Nolley
  • Patent number: 6200715
    Abstract: An electrophotographic imaging member including a support member, a charge generating layer and a charge transport layer, the charge transport layer including a cross linked matrix derived from a cross linkable aromatic polymer with substituent groups containing unsaturated carbon to carbon double bond, the substituent groups being free of any urethane linkage and attached to phenylene.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: March 13, 2001
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, John F. Yanus, Damodar M. Pai, Markus R. Silvestri, Ram S. Narang, William W. Limburg, Dale S. Renfer
  • Patent number: 6200716
    Abstract: A photoreceptor including: (a) a substrate; (b) a charge blocking layer comprising a polymer polymerized fiom at least one monomer including vinylbenzyl alcohol monomer; and (c) at least one imaging layer.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: March 13, 2001
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Huoy-Jen Yuh, John S. Chambers, Harold F. Hammond, Damodar M. Pai, John F. Yanus, Markus R. Silvestri, Helen R. Cherniack
  • Patent number: 6197464
    Abstract: An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer, and an overcoat layer formed from a solution including a first cross linkable polyamide film forming binder free of methyl methoxy groups, an optional second cross linkable polyamide film forming binder containing methyl methoxy groups, a cross linking catalyst and a hole transport material. A process for forming an overcoated imaging member is also disclosed.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: March 6, 2001
    Assignee: Xerox Corporation
    Inventors: Kenny-tuan T. Dinh, Timothy J. Fuller, Markus R. Silvestri, Paul J. Defeo, Damodar M. Pai, John F. Yanus, Robert W. Nolley, William W. Limburg, Dale S. Renfer
  • Patent number: 6197462
    Abstract: A flexible electrostatographic imaging member including at least one photographic imaging layer, a support layer, and an anticurl back layer having an exposed surface including a cross linked polyamide at the exposed surface, the polyamide being, formed from a solution selected from the group including a first solution including crosslinkable alcohol soluble polyamide containing methoxy methyl groups attached to amide nitrogen atoms, an acid having a pKa less than about 3, a cross linking agent selected from the group including a formaldehyde generating cross linking agent, an alkoxylated cross linking agent, a methylolamine cross linking agent and mixtures thereof, and a liquid selected from the group including alcohol solvents, diluent and mixtures thereof, a second solution including crosslinkable alcohol soluble polyamide free of methoxy methyl groups attached to amide nitrogen atoms, an acid having a pKa less than about 3, a cross linking agent selected from the group including a an alkoxyla
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: March 6, 2001
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Timothy J. Fuller, Damodar M. Pai, William W. Limburg, John A. Bergfjord, Sr., Dale S. Renfer