Patents by Inventor Karen Moffat

Karen Moffat 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).

  • Radiation curable red gel ink formulations
    Patent number: 8686062
    Abstract: A radiation curable ink including at least one curable monomer, at least one organic gellant, at least one photoinitiator, and a colorant, the colorant includes an orange colorant and an red colorant, where the orange colorant absorbs light having a wavelength of from about 400 to about 560 nm, and where the red colorant absorbs light having a wavelength of from about 460 to 580 nm. The ink substantially matches PANTONE® Red 032 or PANTONE® Warm Red.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: April 1, 2014
    Assignee: Xerox Corporation
    Inventors: Valerie M Farrugia, C Geoffrey Allen, Jordan H Wosnick, Eric Rotberg, Karen A Moffat, Richard P N Veregin, Suxia Yang, Barkev Keoshkerian, Biby E Abraham
  • Systems and methods for transporting particles
    Patent number: 8672460
    Abstract: Various particle transport systems and components for use in such systems are described. The systems utilize one or more traveling wave grids to selectively transport, distribute, separate, or mix different populations of particles. Numerous systems configured for use in two dimensional and three dimensional particle transport are described.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: March 18, 2014
    Assignee: Xerox Corporation
    Inventors: Armin R. Volkel, David Biegelsen, Philip D. Floyd, Greg Anderson, Fred Endicott, Eric Peeters, Jaan Noolandi, Karen A. Moffat, Peter M. Kazmaier, Maria McDougall, Daniel G. Bobrow
  • Ink compositions
    Patent number: 8652574
    Abstract: A light-magenta radiation-curable gel ink including at least one curable monomer, at least one organic gellant, at least one photoinitiator, and a colorant. The colorant includes a magenta colorant, a hue-adjusting colorant that absorbs light having a wavelength of from about 400 to about 500 nm, and an optional shade-adjusting colorant that absorbs light having a wavelength of from about 600 to about 700 nm.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: February 18, 2014
    Assignee: Xerox Corporation
    Inventors: Edul N. Dalal, Daryl W. Vanbesien, Karen A. Moffat, Michelle N. Chretien, Barkev Keoshkerian, Richard P. N. Veregin, Jordan H. Wosnick, Valerie M. Farrugia
  • Ink compositions
    Patent number: 8652575
    Abstract: A light-cyan solid ink including an ink vehicle and a colorant. The colorant includes a cyan colorant, a hue-adjusting colorant that absorbs light having a wavelength of from about 500 to about 600 nm, and an optional shade-adjusting colorant that absorbs light having a wavelength of from about 400 to about 500 nm.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: February 18, 2014
    Assignee: Xerox Corporation
    Inventors: Daryl W. Vanbesien, Edul N. Dalal, Karen A. Moffat, Raymond W. Wong, C. Geoffrey Allen, Maria Mihaela Birau, Richard P. N. Veregin, Jordan H. Wosnick, Valerie M. Farrugia
  • Toners with Improved Dielectric Loss
    Publication number: 20130337377
    Abstract: The disclosure describes a pigment treated with a rosin and a toner particle containing that rosin-treated pigment particle. The toner has a lower level of dielectric loss.
    Type: Application
    Filed: August 19, 2013
    Publication date: December 19, 2013
    Applicant: XEROX CORPORATION
    Inventors: Ke Zhou, Rina Carlini, Daryl W. Vanbesien, Cuong Vong, Karen A. Moffat, Richard P.N. Veregin
  • SUPER LOW MELT EMULSION AGGREGATION TONERS COMPRISING A TRANS-CINNAMIC DI-ESTER
    Publication number: 20130266896
    Abstract: An emulsion aggregation toner composition is disclosed that includes toner particles with at least one small crystalline molecule, such as a trans-cinnamic diester, at least one amorphous resin, optional waxes, coagulants, pigments, and combinations thereof. In other embodiments, the small crystalline molecule is biodegradable and can be made using raw materials derived from renewable resources. Such small crystalline molecules are also compatible with amorphous binder resins, to provide toner compositions with reduced minimum fusing temperatures without sacrificing electrical performance. Processes for preparing emulsion aggregation toner compositions are also described.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 10, 2013
    Applicant: XEROX CORPORATION
    Inventors: Ke ZHOU, Adela GOREDEMA, Karen MOFFAT, Edward G. ZWARTZ, Mike HAWKINS, Rosa DUQUE, Guerino G. SACRIPANTE
  • Systems and methods for transporting particles
    Patent number: 8550604
    Abstract: Various particle transport systems and components for use in such systems are described. The systems utilize one or more traveling wave grids to selectively transport, distribute, separate, or mix different populations of particles. Numerous systems configured for use in two dimensional and three dimensional particle transport are described.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: October 8, 2013
    Assignee: Xerox Corporation
    Inventors: Armin R. Volkel, David Biegelsen, Philip D. Floyd, Greg Anderson, Fred Endicott, Eric Peeters, Jaan Noolandi, Karen A. Moffat, Peter M. Kazmaier, Maria McDougall, Daniel G. Bobrow
  • Systems and methods for transporting particles
    Patent number: 8550603
    Abstract: Various particle transport systems and components for use in such systems are described. The systems utilize one or more traveling wave grids to selectively transport, distribute, separate, or mix different populations of particles. Numerous systems configured for use in two dimensional and three dimensional particle transport are described.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: October 8, 2013
    Assignee: Xerox Corporation
    Inventors: Armin R. Volkel, David Biegelsen, Philip D. Floyd, Greg Anderson, Fred Endicott, Eric Peeters, Jaan Noolandi, Karen A. Moffat, Peter M. Kazmaier, Maria McDougall, Daniel G. Bobrow
  • Powder Coated Carrier
    Publication number: 20130260305
    Abstract: The instant disclosure describes methods for preparing latex resins for coated carriers using surfactant partitioning, which resins exhibit both lower ? potential and greater latex stability, while not adversely affecting particle size, toner charge or other metrics.
    Type: Application
    Filed: June 1, 2013
    Publication date: October 3, 2013
    Inventors: Daryl W Vanbesien, Michael Steven Hawkins, Corey Tracy, Richard PN Veregin, Karen A Moffat, Paul Joseph Gerroir, Thomas E Enright, Valerie Farrugia
  • Emulsion aggregation toners
    Patent number: 8518627
    Abstract: The present disclosure provides processes for producing toners. In embodiments, silica is added as a chelating agent during the toner production process contributing to enhanced triboelectric charging properties of the toner particles.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: August 27, 2013
    Assignee: Xerox Corporation
    Inventors: Allan K. Chen, Santiago Faucher, Shigang S. Qiu, Karen A. Moffat, Richard P. N. Veregin
  • Toners with Improved Dielectric Loss
    Publication number: 20130157187
    Abstract: The disclosure describes a pigment treated with a rosin and a toner particle containing that rosin-treated pigment particle. The toner has a lower level of dielectric loss.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 20, 2013
    Applicant: Xerox Corporation
    Inventors: Ke Zhou, Rina Carlini, Daryl W. Vanbesien, Cuong Vong, Karen A. Moffat, Richard P.N. Veregin
  • Carboxylic acid or acid salt functionalized polyester polymers
    Publication number: 20130149643
    Abstract: The present disclosure describes a polyester that contains plural pendant adjacent carboxylic acid or acid salt side groups for use in making a toner for use in imaging devices.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 13, 2013
    Inventors: Karen A. Moffat, Dragan Nikolic, Valerie M. Farrugia, Jordan Wosnick, Andriy Kovalenko, Alexander Kobryn, Sergey Gusarov
  • Powder coated carrier
    Patent number: 8461252
    Abstract: The instant disclosure describes methods for preparing latex resins for coated carriers using surfactant partitioning, which resins exhibit both lower ? potential and greater latex stability, while not adversely affecting particle size, toner charge or other metrics.
    Type: Grant
    Filed: November 12, 2011
    Date of Patent: June 11, 2013
    Assignee: Xerox Corporation
    Inventors: Daryl W Vanbesien, Michael Steven Hawkins, Corey Tracy, Richard P N Veregin, Karen A Moffat, Paul Joseph Gerroir, Thomas E Enright, Valerie Farrugia
  • Powder Coated Carrier
    Publication number: 20130123403
    Abstract: The instant disclosure describes methods for preparing latex resins for coated carriers using surfactant partitioning, which resins exhibit both lower ? potential and greater latex stability, while not adversely affecting particle size, toner charge or other metrics.
    Type: Application
    Filed: November 12, 2011
    Publication date: May 16, 2013
    Applicant: XEROX CORPORATION
    Inventors: Daryl W. Vanbesien, Michael Steven Hawkins, Corey Tracy, Richard P.N Veregin, Karen A. Moffat, Paul Joseph Gerroir, Thomas E. Enright, Valerie Farrugia
  • Toner compositions
    Patent number: 8431309
    Abstract: Toner particles are provided which may, in embodiments, include a core and a shell formed in situ. The resins utilized to form the core, the shell, or both, may be contacted with a water soluble initiator. The resin, in embodiments present in the shell, cross-links at a temperature near the temperature for coalescence, and may prevent a crystalline resin in the core from migrating to the toner surface.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: April 30, 2013
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Edward G Zwartz, Karen A Moffat
  • Colored toners
    Patent number: 8394561
    Abstract: The present disclosure provides violet toners and methods for their production. In embodiments, methods of the present disclosure include systems which may be utilized to predict the color properties of a violet toner, thereby permitting adjustment of the pigment loading and/or target mass per unit area.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: March 12, 2013
    Assignee: Xerox Corporation
    Inventors: Jordan H. Wosnick, Suxia Yang, Richard P. N. Veregin, Karen A. Moffat
  • Ink compositions
    Patent number: 8361562
    Abstract: A light-cyan radiation-curable gel ink including at least one curable monomer, at least one organic gellant, at least one photoinitiator, and a colorant. The colorant includes a cyan colorant, a hue-adjusting colorant that absorbs light having a wavelength of from about 500 to about 600 nm, and an optional shade-adjusting colorant that absorbs light having a wavelength of from about 400 to about 500 nm.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: January 29, 2013
    Assignee: Xerox Corporation
    Inventors: Daryl W. Vanbesien, Edul N. Dalal, Karen A. Moffat, Michelle N. Chretien, Barkev Keoshkerian, Richard P. N. Veregin, Jordan H. Wosnick, Valerie M. Farrugia
  • Pyrophoric iron nanoparticles and continuous processes for production thereof
    Patent number: 8308842
    Abstract: Pyrophoric nanoparticles and methods of producing the same are provided herein. An exemplary method of producing pyrophoric nanoparticles can include providing a first aqueous solution comprising at least one metal salt and an aliphatic polyether; providing a second solution comprising a metal hydride reducing agent; continuously combining the first and second solutions to produce nanoparticles in a liquid phase; separating the nanoparticles from the liquid phase; and drying the nanoparticles to form pyrophoric nanoparticles. The pyrophoric nanoparticles can have a diameter ranging from about 1 nm to about 50 nm.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: November 13, 2012
    Assignee: Xerox Corporation
    Inventors: Kimberly D. Nosella, Santiago Faucher, Ke Zhou, Paul J. Gerroir, Richard P. N. Veregin, Karen A. Moffat
  • Multi-stage fixing systems, printing apparatuses and methods of fixing marking material to substrates
    Patent number: 8280287
    Abstract: Multi-stage fixing systems for fixing toner to a substrate, printing apparatuses and methods of fixing marking material to a substrate are provided. An exemplary embodiment of the multi-stage fixing systems includes a softening device for softening toner applied to a substrate by a marking device; and a fixing device for fixing the softened toner to the substrate. The fixing device includes a first fixing member including a first surface; a first thermal energy source for actively heating the first surface; and a second fixing member including a second surface, the first surface and the second surface form a fixing nip at which the substrate with softened toner is received. The first fixing member and the second fixing member are operable to apply heat and pressure to the substrate and softened toner received at the fixing nip to fix the toner to the substrate.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: October 2, 2012
    Assignee: Xerox Corporation
    Inventors: Dale R. Mashtare, Shu Chang, Grace T. Brewington, John F. Knapp, Anthony S. Condello, Daniel M. Bray, Paul J. McConville, Jason M. LeFevre, Karen A. Moffat, Jordan H. Wosnick, Santokh S. Badesha
  • Silica-Coated Magnetic Nanoparticles and Process for Making Same
    Publication number: 20120208026
    Abstract: Disclosed are magnetic coated nanoparticles comprising magnetic cores coated with silica and an organic stabilizer, the magnetic coated nanoparticles having an average particle diameter of no more than about 1,000 nanometers. Also disclosed is a process for preparing silica-coated nanoparticles which comprises: (a) dispersing magnetic nanoparticle cores in a solvent to provide a dispersion having a pH of from about 1 to about 6; (b) adding to the dispersion of magnetic nanoparticles a solution containing tetraethylorthosilicate; and (c) homogenizing or sonicating the dispersion containing the magnetic nanoparticles.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 16, 2012
    Applicant: XEROX CORPORATION
    Inventors: Ke Zhou, Paul J. Gerroir, Karen A. Moffat