Patents by Inventor Yolanda E. Maldonado

Yolanda E. Maldonado 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).

  • Emulsion aggregation toners
    Patent number: 9639015
    Abstract: Disclosed is toner particles having controlled and tailorable fusing characteristics. In particular, there is provided toner particles comprising styrene acrylate which have specific shape characteristics that allow for tailorable fusing characteristics without generating a detrimental effect on the blocking characteristics of such toners.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: May 2, 2017
    Assignee: XEROX CORPORATION
    Inventors: Juan A. Morales-Tirado, David J. W. Lawton, Edward G. Zwartz, Vincenzo G. Marcello, Yolanda E. Maldonado, David R. Kurceba
  • EMULSION AGGREGATION TONERS
    Publication number: 20150160574
    Abstract: Disclosed is toner particles having controlled and tailorable fusing characteristics. In particular, there is provided toner particles comprising styrene acrylate which have specific shape characteristics that allow for tailorable fusing characteristics without generating a detrimental effect on the blocking characteristics of such toners.
    Type: Application
    Filed: December 10, 2013
    Publication date: June 11, 2015
    Applicant: XEROX CORPORATION
    Inventors: Juan A. Morales-Tirado, David J.W. Lawton, Edward G. Zwartz, Vincenzo G. Marcello, Yolanda E. Maldonado, David R. Kurceba
  • System and methods for using toner shape factor to control toner concentration
    Patent number: 8755698
    Abstract: System and methods for controlling toner properties in a two component development system through the toner shape factor. In particular, the present embodiments provide a method for controlling toner concentrations by tailoring the circularity value ranges of the toner particles to prevent dysfunctions and provide a more robust and optimized xerographic system.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 17, 2014
    Assignee: Xerox Corporation
    Inventors: Juan A. Morales-Tirado, Yolanda E. Maldonado, Blaise L. Luzolo, Michael L. Grande
  • SYSTEM AND METHODS FOR USING TONER SHAPE FACTOR TO CONTROL TONER CONCENTRATION
    Publication number: 20140079413
    Abstract: System and methods for controlling toner properties in a two component development system through the toner shape factor. In particular, the present embodiments provide a method for controlling toner concentrations by tailoring the circularity value ranges of the toner particles to prevent dysfunctions and provide a more robust and optimized xerographic system.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 20, 2014
    Applicant: XEROX CORPORATION
    Inventors: Juan A. Morales-Tirado, Yolanda E. Maldonado, Blaise L. Luzolo, Michael L. Grande
  • Emulsion aggregation process
    Patent number: 8221953
    Abstract: The present disclosure provides emulsion aggregation (EA) toner particles having less pigment on the particle surface and a more uniform pigment distribution. The process of preparing the toner includes specific mixing speeds and use of specific temperatures during the emulsion aggregation process and the addition of a shell to the toner particles.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: July 17, 2012
    Assignee: Xerox Corporation
    Inventors: Juan A. Morales-Tirado, Chieh-Min Cheng, Daniel W. Asarese, Yolanda E. Maldonado, Samir Kumar, Elias Panides, Christopher M. Wolfe
  • EMULSION AGGREGATION PROCESS
    Publication number: 20110287359
    Abstract: The present disclosure provides emulsion aggregation (EA) toner particles having less pigment on the particle surface and a more uniform pigment distribution. The process of preparing the toner includes specific mixing speeds and use of specific temperatures during the emulsion aggregation process and the addition of a shell to the toner particles.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: XEROX CORPORATION
    Inventors: Juan A. Morales-Tirado, Chieh-Min Cheng, Daniel W. Asarese, Yolanda E. Maldonado, Samir Kumar, Elias Panides, Christopher M. Wolfe