Patents by Inventor Fatima M. Mayer

Fatima M. Mayer 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: 7781138
    Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: August 24, 2010
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allen K. Chen, Edward G. Zwartz, T. Hwee Ng
  • Publication number: 20100021841
    Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.
    Type: Application
    Filed: October 6, 2009
    Publication date: January 28, 2010
    Applicant: Xerox Corporation
    Inventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allan K. Chen, Edward G. Zwartz, T. Hwee Ng
  • Patent number: 7615328
    Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: November 10, 2009
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allen K. Chen, Edward G. Zwartz, T. Hwee Ng
  • Publication number: 20090061349
    Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.
    Type: Application
    Filed: June 17, 2008
    Publication date: March 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allan K. Chen, Edward G. Zwartz, T. Hwee Ng
  • Patent number: 7402371
    Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: July 22, 2008
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allan K. Chen, Edward G. Zwartz, T. Hwee Ng
  • Patent number: 7335453
    Abstract: A toner composition is provider including a branched amorphous polyester resin and a crystalline polyester resin, wherein the toner possesses rheological properties yielding desired characteristics.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: February 26, 2008
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Fatima M. Mayer, Edward G. Zwartz, Nicoleta Mihai, Valerie M. Farrugia
  • Patent number: 7214463
    Abstract: A toner process comprised of a first heating of a mixture of an acicular magnetite dispersion, a colorant dispersion, a wax dispersion, and a core latex comprised of a first latex containing a vinyl crystalline polyester resin substantially free of crosslinking, and wherein said polyester is substantially dissolved in a vinyl monomer and polymerized to provide said first core latex resin, and which mixture contains a second crosslinked resin containing latex wherein said heating is accomplished in the presence of a coagulant to provide aggregates; adding a shell latex comprised of a polymer substantially free of crosslinking, and further heating said aggregates to provide coalesced toner particles, and wherein said further heating is at a higher temperature than said first heating.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: May 8, 2007
    Assignee: Xerox Corporation
    Inventors: Raj D. Patel, Karen A. Moffat, Fatima M. Mayer, Allan K. Chen
  • Patent number: 7208253
    Abstract: A toner containing a mixture of a sulfopolyester resin, a colorant and an alkyl amide.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: April 24, 2007
    Assignee: Xerox Corporation
    Inventors: Fatima M. Mayer, Guerino G. Sacripante, Edward G. Zwartz, Nicoleta Mihai, Enno E. Agur
  • Patent number: 6835768
    Abstract: A dispersion comprised of a wax and a hydrophilic polyester stabilizer.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: December 28, 2004
    Assignee: Xerox Corporation
    Inventors: Enno E. Agur, Guerino G. Sacripante, Fatima M. Mayer
  • Patent number: 6830860
    Abstract: A toner comprised of a branched amorphous resin, a crystalline resin, and a colorant.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: December 14, 2004
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Hadi K. Mahabadi, Fatima M. Mayer, Edward G. Zwartz, T. Brian McAneney
  • Publication number: 20040142266
    Abstract: A toner comprised of a branched amorphous resin, a crystalline resin, and a colorant.
    Type: Application
    Filed: January 22, 2003
    Publication date: July 22, 2004
    Applicant: Xerox Corporation
    Inventors: Guerino G. Sacripante, Hadi K. Mahabadi, Fatima M. Mayer, Edward G. Zwartz, T. Brian McAneney
  • Publication number: 20040044108
    Abstract: A dispersion comprised of a wax and a hydrophilic polyester stabilizer.
    Type: Application
    Filed: August 28, 2002
    Publication date: March 4, 2004
    Applicant: Xerox Corporation
    Inventors: Enno E. Agur, Guerino G. Sacripante, Fatima M. Mayer
  • Patent number: 6673500
    Abstract: A process comprising applying a toner security mark on a document generated by xerographic means, and which mark possesses white glossy characteristics, and wherein said toner is comprised of a waterborne polymer resin and a colorant, and optionally a second security mark generated by a toner comprised of a waterborne polymer resin and a UV fluorescent component.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: January 6, 2004
    Assignee: Xerox Corporation
    Inventors: Raj D. Patel, Fatima M. Mayer, Michael A. Hopper, Kurt I. Halfyard
  • Patent number: 6132499
    Abstract: An ink composition comprised of (1) a carbamate or thiourea each with a melting point of from about 60.degree. C. to about 120.degree. C. and an acoustic-loss value of from about 25 to about 80 dB/mm, (2) an alcohol compound with melting point of about 25.degree. C. to about 90.degree. C. and with an acoustic-loss value of from about 5 to about 40 dB/mm, (3) a lightfastness component, (5) an antioxidant, and (6) a colorant.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventors: Raymond W. Wong, Marcel P. Breton, Danielle C. Boils, Fatima M. Mayer, Shadi L. Malhotra
  • Patent number: 5952402
    Abstract: An ink composition comprised of a colorant and a phase change vehicle derived from the reaction product of a resin containing at least one furan moiety and at least one maleimide moiety, and wherein said ink possesses a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 100.degree. C. to about 180.degree. C.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: September 14, 1999
    Assignee: Xerox Corporation
    Inventors: Anthony J. Paine, Gordon K. Hamer, Carl P. Tripp, James P. Bareman, Fatima M. Mayer, Guerino G. Sacripante
  • Patent number: 5844020
    Abstract: An ink composition comprised of a colorant and a phase change vehicle derived from the reaction product of a resin containing at least one furan moiety and at least one maleimide moiety, and wherein said ink possesses a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 100.degree. C. to about 180.degree. C.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: December 1, 1998
    Assignee: Xerox Corporation
    Inventors: Anthony J. Paine, Gordon K. Hamer, Carl P. Tripp, James P. Bareman, Fatima M. Mayer, Guerino G. Sacripante
  • Patent number: 5693128
    Abstract: An ink composition comprised of a colorant and a reversible crosslinked component vehicle obtained from the reaction product of an anhydride and an organoamine, and which ink possesses a viscosity of from about 1 centipoise to about 25 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: December 2, 1997
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Fatima M. Mayer, Stephan V. Drappel, Anthony J. Paine, Gregory J. Kovacs