Patents Represented by Attorney, Agent or Law Firm John L. Haack
  • Patent number: 6060204
    Abstract: A process including:forming a first image on a first substrate with a liquid toner comprising a resin, a colorant, a carrier liquid, and an adhesion promoting compound;transferring the image from the first substrate to a second substrate;overcoating the image on the second substrate with a transparent overcoat layer, andtreating the resulting overcoated image.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: May 9, 2000
    Assignee: Xerox Corporation
    Inventors: Christopher M. Knapp, George A. Gibson, David H. Pan, John W. Spiewak
  • Patent number: 6057076
    Abstract: A process including:mixing a resin, and a mixture of a first wax and a second wax; andgrinding and classifying.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: May 2, 2000
    Assignee: Xerox Corporation
    Inventors: John S. Berkes, Eugene F. Young, Raphael F. Bov, Jr.
  • Patent number: 6054240
    Abstract: A yellow toner including:a resin, anda colorant comprising a mixture of a yellow pigment and a yellow dye, wherein the combined weight of the colorant is from about 1 to about 50 weight percent of the total weight of the toner, and wherein the chroma of developed toner is from about 90 to about 130 CIELAB units.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: April 25, 2000
    Assignee: Xerox Corporation
    Inventors: Paul C. Julien, Sue E. Blaszak, Edul N. Dalal, Kristen M. Natale-Hoffman, Ronald J. Koch, John S. Berkes, Grazyna E. Kmiecik-Lawrynowicz
  • Patent number: 6048920
    Abstract: A magnetic nanocomposite composition comprising from about 0.001 to about 60 weight percent of nanocrystalline particles of Fe.sub.3 O.sub.4, and from about 40 to about 99.999 weight percent of a resin.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: April 11, 2000
    Assignee: Xerox Corporation
    Inventors: Ronald F. Ziolo, Kathleen M. Braungart
  • Patent number: 6035780
    Abstract: A process including:forming a first mixture of a first fluoroelastomer, and a first polymeric siloxane containing free radical reactive functional groups; andforming a second mixture of the resulting product with a mixture of a second fluoroelastomer and a second polysiloxane compound, and wherein the resulting product of the dissimilar polymeric materials is a phase compatible blend.The phase compatible blend is useful as a component of electrostatographic and liquid ink printing machines, including long-life fuser rolls, backing rolls, transfer and transfuse belts and rolls and bias charging and bias transfer rolls.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: March 14, 2000
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, Clifford O. Eddy, Arnold W. Henry, Gregory A. Campbell
  • Patent number: 6024141
    Abstract: An apparatus including: a conduit operably connected to a source and extending downwardly therefrom, the conduit being adapted to permit a flow of particulate material from the source through the conduit; a fluidizing nozzle operably connected to the conduit and extending downwardly therefrom, the nozzle defining an inlet for receiving material from the conduit and defining an outlet for dispensing material from the nozzle to a receiver, the inlet defining an inlet cross sectional area perpendicular to the flow the material and outlet defining an outlet cross sectional area perpendicular to the flow the material, the inlet cross sectional area being larger than the outlet cross sectional area; the nozzle being adapted with a plenum including an inlet port for receiving compressed gas and a chamber adapted to communicate the gas to the porous walls of the nozzle, and an outlet port for engaging a vacuum source to continuously evacuate the receiver while the nozzle is engaged with the receiver; a conveyor locat
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: February 15, 2000
    Assignee: Xerox Corporation
    Inventor: Paul M. Wegman
  • Patent number: 6021821
    Abstract: An apparatus including: a conduit operably connected to a source and extending downwardly therefrom, the conduit being adapted to permit a flow of particulate material from the source through the conduit; a fluidizing nozzle operably connected to the conduit and extending downwardly therefrom, the nozzle defining an inlet for receiving material from the conduit and defining an outlet for dispensing material from the nozzle to a receiver, the inlet defining an inlet cross sectional area perpendicular to the flow of the material and outlet defining an outlet cross sectional area perpendicular to the flow of the material, the inlet cross sectional area being larger than the outlet cross sectional area; the nozzle being adapted with a plenum including an inlet port for receiving compressed gas and a chamber adapted to communicate the gas to the porous walls of the nozzle, and an outlet port for engaging a vacuum source to continuously evacuate the receiver while the nozzle is engaged with the receiver; a conveyor
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: February 8, 2000
    Assignee: Xerox Corporation
    Inventor: Paul M. Wegman
  • Patent number: 6013404
    Abstract: A toner composition including electrically conductive core resin particles with an electrically insulating shell thereover.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: January 11, 2000
    Assignee: Xerox Corporation
    Inventors: James Q. Feng, Dan A. Hays, Bing R. Hsieh
  • Patent number: 6004717
    Abstract: A process comprising:blending core particles with a first coating resin or resin mixture to produce a first blend;heating the resulting first blend to produce first coated particles;blending the resulting first coated particles with a second coating resin or resin mixture to form a second blend; andheating the second blend to afford second or twice coated particles.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: December 21, 1999
    Assignee: Xerox Corporation
    Inventors: John A. Creatura, K. Derek Henderson, Bernard A. Kelly
  • Patent number: 6000446
    Abstract: A method including: a particulate material source and receiver, and wherein the source contains a discharge feature; moving material in the source in the direction of a member located at least partially within the source, the member defining an adjustable restriction therein such that the particulate material clogs within the restriction; mechanically agitating the particulate material in the source, at least adjacent to the restriction to thereby unclog the particulate material within the adjustable restriction; and dispensing particulate material through the adjustable restriction, through the discharge feature, and into the receiver.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: December 14, 1999
    Assignee: Xerox Corporation
    Inventors: Paul M. Wegman, Mikhail Vaynshteyn, Charles J. Balistere
  • Patent number: 5989769
    Abstract: A liquid developer composition including: a resin, a colorant, a liquid carrier vehicle, and a cake inducing agent.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: November 23, 1999
    Assignee: Xerox Corporation
    Inventors: Ralph A. Mosher, William M. Prest, Jr., Paul W. Morehouse, Jr., Samuel Kaplan, Timothy J. Fuller, Weizhong Zhao, Anita C. VanLaeken, Raymond W. Stover
  • Patent number: 5988234
    Abstract: An apparatus including:a funnel comprising a housing operably connected to a particulate source at one end and extending downwardly therefrom to a receiver member at the other end, the funnel being adapted to permit a flow of powder therethrough, and wherein the inner wall of the funnel is adapted with a porous member which provides a boundary layer of gas between the porous member and the powder.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: November 23, 1999
    Assignee: Xerox Corporation
    Inventor: Paul M. Wegman
  • Patent number: 5985505
    Abstract: A process including mixing a slurry of HOGaPc Type I polymorph, under low shear and high flow, in an organic solvent, wherein there results a HOGaPc Type V polymorph with superior electrophotographic imaging properties.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: November 16, 1999
    Assignee: Xerox Corporation
    Inventors: Paul C. Lincoln, Edouard E. Langlois, Daniel M. McNeil
  • Patent number: 5983065
    Abstract: A method including:providing a facility with at least one controlled access electronic printing machine;printing original documents with the controlled access electronic printing machine, wherein printed images formed thereby arise from marking materials containing at least one photoactive additive;equipping all uncontrolled access reprographic devices within the facility with a secure illumination source capable of exposing an object document with sufficient intensity to activate the photoactive additive; andilluminating the object document with the secure illumination source of the uncontrolled access reprographic device, wherein the object documents having original document images printed thereon cannot be copied or scanned in a normal copy or scan illumination interval.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: November 9, 1999
    Assignee: Xerox Corporation
    Inventors: Jeffrey J. Folkins, Michael M. Shahin, Craig A. Smith, Michael A. Parisi, Lingappa K. Mestha
  • Patent number: 5968674
    Abstract: A conductive polymer coating comprising an arylamine charge transport compound, an oxidized arylamine charge transport compound salt, and a polymer binder, wherein the oxidized arylamine charge transport compound salt has a counter anion selected from the group consisting of hexafluoroantimonate and hexafluoroarsenate.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: October 19, 1999
    Assignee: Xerox Corporation
    Inventors: Bing R. Hsieh, Joan R. Ewing, Anita C. VanLaeken
  • Patent number: 5968703
    Abstract: A process including:blending carrier particles;separating the resulting blended carrier particles from fine particles formed in blending; andblending the resulting blended carrier particles with toner particles to form a two component developer.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: October 19, 1999
    Assignee: Xerox Corporation
    Inventors: Deepak R. Maniar, John T. Bickmore
  • Patent number: 5962177
    Abstract: A toner composition comprised of a pigment, and a linear polyester resin of the formula ##STR1## where R' is independently selected from the group consisting of phenylene, cyclohexylene, and alkylene with from 4 to about 24 carbon atoms, where R is an oxyalkylene group of the formula ##STR2## where R" is independently selected from the group hydrogen and hydrocarbon substituents with from 1 to about 24 carbon atoms, n is an integer from about 2 to about 10,000, and m is an integer from about 2 to about 10,000.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: October 5, 1999
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Walter Mychajlowskij, Beng S. Ong
  • Patent number: 5952131
    Abstract: A composition including a matrix comprised of particles comprised of a core resin and a shell resin thereover, wherein the core resin contains a covalently bonded photosensitive compound, and wherein the shell resin is the continuous phase of the matrix.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: September 14, 1999
    Assignee: Xerox Corporation
    Inventors: Eugenia Kumacheva, Jaan Noolandi, Olga Kalinina
  • Patent number: 5948583
    Abstract: A toner including a mixture of first toner with high molecular weight wax, and second toner with a low molecular weight wax.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: September 7, 1999
    Inventors: Scott M. Silence, Samir Kumar, Carol A. Fox
  • Patent number: 5945502
    Abstract: A polymer including mers of the formulas: ##STR1## and copolymers or mixtures thereof.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: August 31, 1999
    Assignee: Xerox Corporation
    Inventors: Bing R. Hsieh, Yuan Yu