Patents Represented by Attorney E. O. Palazzo
  • Patent number: 6309787
    Abstract: A process comprising aggregating a colorant encapsulated polymer particle containing a colorant with colorant particles and wherein said colorant encapsulated latex is generated by a miniemulsion polymerization.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: October 30, 2001
    Assignee: Xerox Corporation
    Inventor: Chieh-Min Cheng
  • Patent number: 6299941
    Abstract: An aqueous ink jet ink composition comprised of water, colorant, and colored resin emulsion particles generated from olefinic monomers, wherein at least one of said olefinic monomers contains a colorant, wherein the olefinic colorant component is prepared from the condensation reaction of a functional colorant with an olefinic containing reactive material, and which reaction generates wherein Dye represents a colorant chromophore, and R is a carbonyl, carboxylate, oxygen, or arylene, and R′ is hydrogen or alkyl.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: October 9, 2001
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Garland J. Nichols, Min-Hong Fu, Chieh-Min Cheng, Daniel G. Marsh
  • Patent number: 6288141
    Abstract: An ink composition comprised of (1) a polymeric carbamate compound; (2) an organic monomer carbamate, (3) a conductive compound, (4) a lightfastness compound, and (5) a colorant.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: September 11, 2001
    Assignee: Xerox Corporation
    Inventor: Shadi L. Malhotra
  • Patent number: 6287373
    Abstract: An ink composition containing, for example, (1) an oxazoline compound; (2) a thiourea compound; (3) an oxime compound; (4) a lightfastness compound; (5) an antioxidant; and (6) a colorant.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: September 11, 2001
    Assignee: Xerox Corporation
    Inventors: Shadi L. Malhotra, Raymond W. Wong, Marcel P. Breton
  • Patent number: 6287737
    Abstract: A photoconductive imaging member comprised of a supporting substrate, a hole blocking layer thereover, a photogenerating layer and a charge transport layer, and wherein the hole blocking layer is comprised of a crosslinked polymer derived from the reaction of a silyl-functionalized hydroxyalkyl polymer of Formula (I) with an organosilane of Formula (II) and water wherein A, B, D, and F represent the segments of the polymer backbone; E is an electron transporting moiety; X is selected from the group consisting of halide, cyano, alkoxy, acyloxy, and aryloxy; a, b, c, and d are mole fractions of the repeating monomer units such that the sum of a+b+c+d is equal to 1; R is alkyl, substituted alkyl, aryl, or substituted aryl; and R1, R2, and R3 are independently selected from the group consisting of alkyl, aryl, alkoxy, aryloxy, acyloxy, halogen, cyano, and amino, subject to the provision that two of R1, R2, and R3 are independently selected from the group consisting of alkoxy, aryl
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: September 11, 2001
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Cheng-Kuo Hsiao, Huoy-Jen Yuh, John S. Chambers, Damodar M. Pai, Markus R. Silvestri, Kathleen M. Carmichael
  • Patent number: 6287738
    Abstract: A photoconductive imaging member comprised of a mixture of at least two symmetrical perylene bisimide dimers of Formula 1 Formula 1 wherein R is hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl, and at least one terminally unsymmetrical dimer of Formula 2 Formula 2 wherein R1 and R2 are hydrogen, alkyl, cycloalkyl, substituted alkyl, aryl, substituted aryl, aralkyl, or substituted aralkyl, and wherein R1 and R2 are dissimilar.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: September 11, 2001
    Assignee: Xerox Corporation
    Inventors: James M. Duff, Ah-Mee Hor, C. Geoffrey Allen, Roger E. Gaynor, Cheng-Kuo Hsiao
  • Patent number: 6268102
    Abstract: A process for the preparation of toner comprising mixing a colorant, a latex, optionally a wax and a polyaluminum sulfosilicate.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: July 31, 2001
    Assignee: Xerox Corporation
    Inventors: Michael A. Hopper, Raj D. Patel, Tanya J. Martin
  • Patent number: 6268103
    Abstract: A toner process comprising mixing a functionalized wax with a colorant and a resin latex emulsion; adding an inorganic cationic coagulant; heating below the latex resin Tg; adjusting the pH to basic; and heating above the latex resin Tg.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: July 31, 2001
    Assignee: Xerox Corporation
    Inventors: Michael A. Hopper, Raj D. Patel
  • Patent number: 6268100
    Abstract: A carrier comprised of a carrier core, optional polymer coating, and fluorosilanated pigment coating.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: July 31, 2001
    Assignee: Xerox Corporation
    Inventors: Michael F. Cunningham, Richard P. N. Veregin, Carl P. Tripp, Thomas E. Enright, Maria V. McDougall, John A. Creatura
  • Patent number: 6254943
    Abstract: A transfer sheet including a substrate; and an indicator.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: July 3, 2001
    Assignee: Xerox Corporation
    Inventor: Helen A. Osbourne
  • Patent number: 6254929
    Abstract: A process including: treating a mixture comprising an aqueous dispersion of toner particles and a first solution of a water soluble alkyl carboxylate metal salt with a second solution of a water soluble metal salt.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: July 3, 2001
    Assignee: Xerox Corporation
    Inventors: James M. Duff, Grazyna E. Kmiecik-Lawrynowicz, Guerino G. Sacripante
  • Patent number: 6251987
    Abstract: An aqueous ink jet ink composition comprised of water, colorant, and colored resin emulsion particles generated from olefinic monomers, wherein at least one of said olefinic monomers contains a colorant, wherein the olefinic colorant component is prepared from the condensation reaction of a functional colorant with an olefinic containing reactive material, and which reaction generates: wherein Dye represents a colorant chromophore, and R is a carbonyl, carboxylate, oxygen, or arylene, and R′ is hydrogen or alkyl.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: June 26, 2001
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Garland J. Nichols, Min-Hong Fu, Chieh-Min Cheng, Daniel G. Marsh
  • Patent number: 6251554
    Abstract: A carrier comprised of a core and thereover a polymer generated from (1) a polymer containing amine groups, and (2) a second polymer containing sulfonic functional groups.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: June 26, 2001
    Assignee: Xerox Corporation
    Inventors: Thomas R. Hoffend, Robert D. Bayley, Carol A. Fox, John G. VanDusen, Scott M. Silence, K. Derek Henderson
  • Patent number: 6239193
    Abstract: A process for the preparation of an ink which comprises mixing an ink vehicle, a colorant and a latex, and wherein said latex is generated by the polymerization of a mixture of olefinic monomers, and which polymerization is accomplished in the presence of a nonionic polyethoxylated surfactant, and which surfactant possesses an HLB value of from about 16.5 to about 21.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: May 29, 2001
    Assignee: Xerox Corporation
    Inventors: Chieh-Min Cheng, Garland J. Nichols
  • Patent number: 6235395
    Abstract: A display comprised of a first component containing spheres encapsulated within a wax, and thereover and thereunder said component substrates.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: May 22, 2001
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, James C. Mikkelsen, Jr.
  • Patent number: 6229012
    Abstract: A triazine compound of the formula wherein Ar1, Ar2, Ar3, and Ar4 are each an aryl, aliphatic, or a mixture of aryl and aliphatic; R1 and R2 are selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, halogen, and cyano; and L is L(n) wherein n is zero or 1, said L being a divalent group.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: May 8, 2001
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, Zoran D. Popovic, Beng S. Ong, Hany Aziz
  • Patent number: 6225467
    Abstract: The triazine wherein Ar1, Ar2, Ar3, and Ar4 are each independently an aryl; R1 and R2 are substituents selected from the group consisting of hydrogen, an alkyl, an aryl, an alkoxy, a halogen atom, and a cyano; R3 and R4 are each a divalent group L selected from the group consisting of —C(R′R″)—, alkylene, an oxygen atom, a sulfur atom, and —Si(R′R″)—, wherein R′ and R″ are selected from the group consisting of hydrogen, alkyl, alkoxy, and aryl.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: May 1, 2001
    Assignee: Xerox Corporation
    Inventors: Mohammad Esteghamatian, Nan-Xing Hu, Zoran D. Popovic, Ah-Mee Hor, Beng S. Ong
  • Patent number: 6218066
    Abstract: A liquid developer comprised of a nonpolar liquid, resin, colorant, and a cyclodextrin charge acceptance component.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: April 17, 2001
    Assignee: Xerox Corporation
    Inventors: Weizhong Zhao, David H. Pan, John W. Spiewak, Christopher M. Knapp
  • Patent number: 6214504
    Abstract: A photoconductive imaging member containing a photogenerator layer comprised of a mixture of bis(methylbenzimidazo)perinone, optionally an (alkylimido)perylene, such as (n-pentylimido)perylene or mixtures of (n-pentylimido)perylene, bisbenzimidazo(2,1-a-1′,2′-b)anthra(2,1,9-def:6,5,10-d′e′f′)diisoquinoline-6,11-dione and bisbenzimidazo(2,1-a:2′,1′-a)anthra(2,1,9-def:6,5,10-d′e′f′)diisoquinoline-10,21-dione, and a charge transport layer.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: April 10, 2001
    Assignee: Xerox Corporation
    Inventors: Mohammad Esteghamatian, Ah-Mee Hor, James M. Duff, C. Geoffrey Allen, Dasarao K. Murti
  • Patent number: 6214505
    Abstract: A photoconductive imaging member containing a photogenerating layer and a charge transport layer, and wherein the charge transport layer contains a poly(imide-carbonate) resin binder of (I) or (II) wherein A, B and E are divalent linkages; D is a trivalent linkage in (I) and a tetravalent linkage in (II); and x and y represent mole fractions wherein the sum of x+y is equal to 1.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: April 10, 2001
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Yu Qi, Cheng-Kuo Hsiao