Patents by Inventor Edward G. Zwartz

Edward G. Zwartz 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).

  • Phase change inks containing crystalline trans-cinnamic diesters and polyterpene resins
    Patent number: 8906150
    Abstract: Disclosed is a phase change ink comprising an ink carrier which comprises: (a) a crystalline trans-cinnamic diester; and (b) an amorphous polyterpene resin.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: December 9, 2014
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Rina Carlini, Caroline M. Turek, Edward G. Zwartz
  • Solid phase change ink compositions comprising oxazolines
    Patent number: 8888907
    Abstract: A solid ink composition comprising at least one crystalline oxazoline compound and at least one amorphous component derived from a polyol, and a colorant and optional viscosity modifier, which are suitable for inkjet printing, including printing on coated paper substrates. In embodiments, the solid ink formulation comprises a blend of an amorphous and crystalline components which provides a solid ink with excellent robustness when forming images or printing on coated paper substrates.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: November 18, 2014
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, Adela Goredema, Guerino G. Sacripante, Caroline M. Turek, Edward G. Zwartz
  • Method of powder coating and powder-coated fuser member
    Patent number: 8883264
    Abstract: Methods for powder coating that include applying a powder coating composition to a substrate via an electrostatic gun. The powder coating composition includes a mixture of two or more materials having different densities, such as a mixture of aerogel particles and fluoropolymer-containing particles. The electrostatic gun can have a high-voltage generator that generates a negative polarity voltage between about 0 KV and about 100 KV during application of the powder coating composition, and the electrostatic gun can have a round spray nozzle. Methods of making fuser members using such powder coating methods, fuser members prepared by such methods, and methods of preparing low gloss images using such fuser members.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: November 11, 2014
    Assignee: Xerox Corporation
    Inventors: Suxia Yang, Qi Zhang, Edward G Zwartz, Yu Qi, Gordon Sisler, David Charles Irving
  • SURFACE COATING AND FUSER MEMBER
    Publication number: 20140321893
    Abstract: There is described a fuser member comprising a substrate layer and a surface layer disposed on the substrate. The surface layer comprises a non-woven polymer fiber matrix having dispersed throughout a cross-linked fluoropolymer and a release agent. The release agent is a liquid at a temperature about 100° C.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 30, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Brynn M. Dooley, Edward G. Zwartz
  • SURFACE COATING AND FUSER MEMBER
    Publication number: 20140323005
    Abstract: Described is a fuser member having a substrate and a surface layer disposed on the substrate. The surface layer includes a non-woven polymer fiber matrix having dispersed throughout a siloxyfluorocarbon (SFC) networked polymer and a fluorinated polyhedral oligomeric silsesquioxane.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 30, 2014
    Applicant: Xerox Corporation
    Inventors: Brynn M. Dooley, Yu Qi, Edward G. Zwartz, Nan-Xing Hu
  • Fuser member
    Patent number: 8846196
    Abstract: The present teachings provide a fuser member. The fuser member includes an outer layer comprising a composite of a fluoropolymer and a networked siloxyfluorocarbon polymer.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: September 30, 2014
    Assignee: Xerox Corporation
    Inventors: Carolyn P. Moorlag, Yu Qi, Qi Zhang, Nan-Xing Hu, Kurt I. Halfyard, Nicoleta D. Mihai, Gordon Sisler, Guiqin Song, Edward G. Zwartz, T. Brian McAneney
  • Super low melt emulsion aggregation toners comprising a trans-cinnamic di-ester
    Patent number: 8841055
    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: Grant
    Filed: April 4, 2012
    Date of Patent: September 23, 2014
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Adela Goredema, Karen Moffat, Edward G. Zwartz, Mike Hawkins, Rosa Duque, Guerino G. Sacripante
  • Toner compositions
    Patent number: 8828637
    Abstract: Toner particles are provided which may include a core and a shell, one or both of which may include a polyester gel. The gel in the shell and/or core may prevent a crystalline resin in the core from migrating to the toner surface.
    Type: Grant
    Filed: September 7, 2013
    Date of Patent: September 9, 2014
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Karen Ann Moffat, Maria N V McDougall, Edward G Zwartz, Paul J Gerroir
  • Phase change inks containing oligomeric rosin esters
    Patent number: 8778069
    Abstract: Disclosed is a phase change ink comprising an ink carrier which comprises a crystalline component and an amorphous rosin ester. In specific embodiments, the crystalline component can be a trans-cinnamic diester, a diester of tartaric acid, or a diurethane. In specific embodiments, the ink exhibits a peak melting point of no more than about 150° C., an onset crystallization temperature of no less than about 60° C., a melt viscosity within the temperature range of from about 100° C. to about 130° C. of from about 5 cps to about 22 cps, a peak solidification viscosity at about 50° C. of no less than about 1×106 cps, and a hardness at about 25° C. of at least about 70.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: July 15, 2014
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, Adela Goredema, Edward G. Zwartz, Kentaro Morimitsu, Gial Song
  • Cardanol derivatives in polyester toner resins
    Patent number: 8771913
    Abstract: The present disclosure provides a polyester toner resin comprising a polyhydroxylated cardanol derivative, that may be used in manufacturing an emulsion aggregation (EA) toner for imaging devices.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: July 8, 2014
    Assignee: Xerox Corporation
    Inventors: Jordan H Wosnick, Guerino G Sacripante, Ke Zhou, Edward G Zwartz, Michael S Hawkins
  • Cardanol Derivatives in Polyester Toner Resins
    Publication number: 20140170555
    Abstract: The present disclosure provides a polyester toner resin comprising a polyhydroxylated cardanol derivative, that may be used in manufacturing an emulsion aggregation (EA) toner for imaging devices.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 19, 2014
    Applicant: XEROX CORPORATION
    Inventors: Jordan H. Wosnick, Guerino G. Sacripante, Ke Zhou, Edward G. Zwartz, Michael S. Hawkins
  • SURFACE COATING AND FUSER MEMBER
    Publication number: 20140154512
    Abstract: Described is a fuser member having a substrate and a release layer disposed on the substrate. The release layer includes a non-woven matrix of a plurality of polymer fibers. Each of the plurality of polymer fibers has a diameter of from about 5 nm to about 50 microns. A siloxyfluorocarbon networked polymer dispersed throughout the plurality of polymer fibers. The plurality of polymer fibers are from about 5 weight percent to about 50 weight percent of the release layer. In embodiments the polymer fibers are encased in a fluoropolymer sheath.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Applicant: XEROX CORPORATION
    Inventors: Brynn M. Dooley, Yu Qi, Edward G. Zwartz, Nan-Xing Hu
  • Phase Change Inks Containing Oligomeric Rosin Esters
    Publication number: 20140137767
    Abstract: Disclosed is a phase change ink comprising an ink carrier which comprises a crystalline component and an amorphous rosin ester. In specific embodiments, the crystalline component can be a trans-cinnamic diester, a diester of tartaric acid, or a diurethane. In specific embodiments, the ink exhibits a peak melting point of no more than about 150° C., an onset crystallization temperature of no less than about 60° C., a melt viscosity within the temperature range of from about 100° C. to about 130° C. of from about 5 cps to about 22 cps, a peak solidification viscosity at about 50° C. of no less than about 1×106 cps, and a hardness at about 25° C. of at least about 70.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: XEROX CORPORATION
    Inventors: Rina Carlini, Adela Goredema, Edward G. Zwartz, Kentaro Morimitsu, Gail Song
  • Method of Powder Coating and Powder-Coated Fuser Member
    Publication number: 20140121298
    Abstract: Methods for powder coating that include applying a powder coating composition to a substrate via an electrostatic gun. The powder coating composition includes a mixture of two or more materials having different densities, such as a mixture of aerogel particles and fluoropolymer-containing particles. The electrostatic gun can have a high-voltage generator that generates a negative polarity voltage between about 0 KV and about 100 KV during application of the powder coating composition, and the electrostatic gun can have a round spray nozzle. Methods of making fuser members using such powder coating methods, fuser members prepared by such methods, and methods of preparing low gloss images using such fuser members.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 1, 2014
    Applicant: XEROX CORPORATION
    Inventors: Suxia Yang, Qi Zhang, Edward G. Zwartz, Yu Qi, Gordon Sisler, David Charles Irving
  • Tunable gloss toners
    Patent number: 8652732
    Abstract: The present disclosure provides toners having a tunable gloss level, electrophotographic apparatus for suing such toners as well as processes for making such toners.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: February 18, 2014
    Assignee: Xerox Corporation
    Inventors: Edward G. Zwartz, T. Brian McAneney, Valerie M. Farrugia, Jordan H. Wosnick, Richard P N Veregin, Eric Rotberg
  • EMULSION AGGREGATION TONER PROCESS COMPRISING DIRECT ADDITION OF SURFACE-TREATED PIGMENT
    Publication number: 20140045116
    Abstract: A method of making a toner that includes adding pigments into an emulsion aggregation toner without first preparing a pigment dispersion. The method eliminates the pigment dispersion step in the manufacture of emulsion aggregation toilers by surface-treating pigments. Dry surface-treated pigments can be directly incorporated into the toner prior to aggregation in the aggregation coalescence process without the need to first prepare aqueous pigment dispersions.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 13, 2014
    Applicant: XEROX CORPORATION
    Inventors: Enno E. AGUR, Shigang S. QIU, Ke ZHOU, Cuong VONG, Edward G. ZWARTZ, Santiago FAUCHER
  • Toner Compositions
    Publication number: 20140011131
    Abstract: Toner particles are provided which may include a core and a shell, one or both of which may include a polyester gel. The gel in the shell and/or core may prevent a crystalline resin in the core from migrating to the toner surface.
    Type: Application
    Filed: September 7, 2013
    Publication date: January 9, 2014
    Applicant: Xerox Corporation
    Inventors: Ke Zhou, Karen Ann Moffat, Maria N.V. McDougall, Edward G. Zwartz, Paul J. Gerroir
  • Method of controlling gloss
    Patent number: 8615188
    Abstract: The present teachings provide a fusing method and system of tuning gloss level on a copy substrate. The method includes obtaining an image forming apparatus for forming images on a recording medium including a charge-retentive surface to receive an electrostatic latent image thereon. The method includes applying toner to the charge-retentive surface to develop an electrostatic latent image to form a developed image on the charge-retentive surface. The developed image is transferred from the charge retentive surface to a copy substrate. The toner images are fused to a surface of the copy substrate. The gloss is adjusted on the copy substrate by providing a fuser member having a surface layer a fluoroplastic matrix having dispersed therein aerogel particles wherein the greater a weight percent of the aerogel particles in the fluoroplastic matrix the lower the gloss.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: December 24, 2013
    Assignee: Xerox Corporation
    Inventors: Carolyn P. Moorlag, Edward G. Zwartz, Gordon Sisler, Kurt I. Halfyard, Yu Qi, Sandra J. Gardner, T. Brian McAneney, Nan-Xing Hu
  • STRETCHABLE INK COMPOSITION
    Publication number: 20130337237
    Abstract: An ink composition suitable for ink jet printing, including printing on deformable substrates. In embodiments, the stretchable ink composition is based on an aqueous ink formulation comprising an emulsion of a polyurethane elastomer in combination with colorant dispersions, and surfactants.
    Type: Application
    Filed: June 13, 2012
    Publication date: December 19, 2013
    Applicant: XEROX CORPORATION
    Inventors: Yiliang Wu, Cameron Derry, Peter G. Odell, Edward G. Zwartz
  • Extended zone low temperature non-contact heating for distortion free fusing of images on non-porous material
    Patent number: 8606165
    Abstract: A system for heated gas fusing of toner on non-porous substrates is provided. The system uses (1) an extended fusing zone held at lower temperatures than needed for a roll nip or radiant fuser, and (2) a very low melt toner which can be fused at greatly reduced temperatures compared to conventional toners. In one form, the system is realized through (a) the use of heated gas as the low temperature extended zone fusing technology, and (b) the use of ultra-low melt (ULM) toner—which requires significantly reduced temperature compared to conventional toner. On non-porous packaging substrates the use of heated gas can limit the substrate temperature to 100° C.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: December 10, 2013
    Assignees: Xerox Corporation, Palo Alto Research Center Incorporated
    Inventors: Gregory J. Kovacs, Ashish Pattekar, David Biegelsen, Lars E. Swartz, Guerino G. Sacripante, T. Brian McAneney, Edward G. Zwartz