Patents Represented by Attorney, Agent or Law Firm E. O. Palazlo
  • Toners and developers
    Patent number: 6824942
    Abstract: A toner comprised of resin, colorant and calcium stearate.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: November 30, 2004
    Assignee: Xerox Corporation
    Inventors: Scott M. Silence, William H. Hollenbaugh, Jr., Thomas R. Pickering, Amy L. Stamp, Roger N. Ciccarelli, Denise R. Bayley, Samuel Kaplan, Alexander N. Klymachyov, John S. Walters, Padam K. Angra
  • Photoconductive imaging members with N,N-bis(biarylyl)aniline charge transport polymers
    Patent number: 4937165
    Abstract: A photoconductive imaging member comprised of a photogenerating layer, and a charge transport layer comprised of the N,N-bis(biarylyl)aniline charge transport polymers of the formula ##STR1## wherein A and B are independently selected from bifunctional linkages; Z is alkylenedioxy, arylenedioxy, or substituted derivatives thereof; R and R' are alkyl, aryl, alkoxy, aryloxy, or halogen; x and y are mole fractions wherein x is greater than 0 and the sum of x and y is equal to 1.0; a and b are the numbers 0, 1 or 2; and n represents the number of monomer units.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: June 26, 1990
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Barkev Keoshkerian, Giuseppa Baranyi
  • Toner and developer compositions with charge enhancing additives
    Patent number: 4937157
    Abstract: A toner composition comprised of resin, pigment or dye particles, and a quaternary ammonium bisulfate charge enhancing additive of the formula R'.sub.2 R".sub.2 N.sup.+ X- wherein R' and R" are independently selected from the group consisting of alkyl, aryl, and alkylaryl; and X- is a bisulfate anion.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: June 26, 1990
    Assignee: Xerox Corporation
    Inventors: John L. Haack, John R. Laing, Michael Smith