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).

  • Toner compositions and processes
    Patent number: 8221948
    Abstract: Environmentally friendly toner particles are provided which may, in embodiments, include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Toner particles may, in embodiments, have a core-shell configuration, with the shell formed of the bio-based amorphous polyester resin, the amorphous polyester resin, the crystalline polyester resin, or combinations thereof.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: July 17, 2012
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Richard P. N. Veregin, Gwynne McAneney-Lannen, Edward G. Zwartz, Maria N. V. McDougall, Guerino Sacripante, Karen A. Moffat
  • Toner compositions
    Patent number: 8211607
    Abstract: Toner particles are provided which may, in embodiments, include a gel. In embodiments, the toner particles may have a core-shell configuration, with the gel in the core, the shell, or both. The gel may prevent a crystalline resin in the core of the toner particles from migrating to the toner surface.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Karen Ann Moffat, Edward G. Zwartz, Richard P. N. Veregin, Maria N. V. McDougall
  • FUSER MEMBER
    Publication number: 20120157277
    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: Application
    Filed: December 21, 2010
    Publication date: June 21, 2012
    Applicant: 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
  • FUSER MEMBER AND COMPOSITION
    Publication number: 20120156481
    Abstract: The present teachings provide a fuser member. The fuser includes a layer of a siloxyfluorocarbon networked polymer.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 21, 2012
    Applicant: 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
  • SURFACE TREATMENT FOR IMPROVING THE ADHESION OF PHASE CHANGE INK ON SUBSTRATES
    Publication number: 20120141180
    Abstract: Treatments are described for surfaces of substrates to improve adhesion with a phase change ink. A method of forming an image on a coated substrate with a phase change ink includes treating a surface of the coated substrate with a corona discharge treatment, a plasma treatment and/or an electron-beam treatment prior to image formation, and subsequently forming an image on the surface of the treated coated substrate with a phase change ink, wherein the image formed on the substrate has an LV Index that is reduced compared to that of an image formed on the untreated substrate. A phase change ink printing apparatus includes a corona discharge, plasma and/or electron-beam treatment device; and a phase change ink printing device, wherein the corona discharge, plasma and/or electron-beam treatment device is located upstream, in a process direction, from the phase change ink printing device.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 7, 2012
    Applicant: XEROX CORPORATION
    Inventors: Guiqin SONG, Edward G. Zwartz, Gordon Sisler, T. Brian McAneney
  • Curable toner compositions and processes
    Patent number: 8192912
    Abstract: Processes for producing emulsion aggregation toners are provided. In embodiments, methods of the present disclosure may be utilized to produce toners suitable for low melt applications, including use in flexible packaging applications, where low pile height is desired for low cost and flexibility. In embodiments, the EA toners may be prepared by optimizing the particle size of the emulsion, the choice of and amount of aggregating agent utilized, and the solids content of the emulsion.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: June 5, 2012
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Nathan C. Dyck, Daryl W. Vanbesien, Edward G. Zwartz, Cuong Vong
  • Toner compositions and processes
    Patent number: 8187780
    Abstract: Environmentally friendly toner particles are provided which may, in embodiments, include a biodegradable semi-crystalline polyester resin and a biodegradable amorphous polyester resin.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: May 29, 2012
    Assignee: Xerox Corporation
    Inventors: Gwynne McAneney-Lannen, Guerino G. Sacripante, Edward G. Zwartz, Maria N. V. McDougall
  • Toner process
    Patent number: 8178274
    Abstract: The present disclosure provides toners and processes for preparing toner particles possessing excellent charging characteristics. The process includes forming a dispersion including at least one organic and/or organometallic charge control agent, and then combining that dispersion with an emulsion suitable for use in forming toner particles.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: May 15, 2012
    Assignee: Xerox Corporation
    Inventors: Enno E. Agur, Daryl W. Vanbesien, Ke Zhou, Michael S. Hawkins, Maria N. V. McDougall, Richard P. N. Veregin, Edward G. Zwartz
  • Toner Compositions
    Publication number: 20120107737
    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: Application
    Filed: January 6, 2012
    Publication date: May 3, 2012
    Applicant: XEROX CORPORATION
    Inventors: Ke Zhou, Edward G. Zwartz, Karen Ann Moffat
  • Curable toner compositions and processes
    Patent number: 8168361
    Abstract: An emulsion aggregation toner composition includes toner particles including: an amorphous polyester resin; an optional crystalline resin; an optional colorant; an optional wax; an optional coagulant; and a polymeric or oligomeric hydroxy ketone photo initiator capable of initiating crosslinking of said polyester resin, wherein at least one of the amorphous polyester resin and the optional crystalline resin when present is unsaturated.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: May 1, 2012
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Daryl W. Vanbesien, Edward G. Zwartz, Guerino G. Sacripante, Karen A. Moffat
  • Bio-based amorphous polyester resins for emulsion aggregation toners
    Patent number: 8163459
    Abstract: Disclosed are amorphous polyesters that contain only renewable resources designed for emulsion aggregation toner fabrication. The amorphous polyesters may be obtained from the mixture of three different monomers: 1,4:3,6-dianhydro-D-sorbitol (isosorbide), nonanedioic acid (azelaic acid), and butanedioic acid (succinic acid). Different polymer properties may be achieved depending on the ratio of these three monomers. By altering the ratio, polymers of high to low acid value can be obtained, as well as different ranges of glass transition temperatures.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventors: Valerie M. Farrugia, Guerino Sacripante, Ke Zhou, Edward G. Zwartz, Michael S. Hawkins
  • Toner compositions
    Patent number: 8133649
    Abstract: Toner particles are provided which may, in embodiments, include a high molecular weight branched or cross-linked polyester to decrease image gloss and to increase toner elasticity to prevent surface additives impaction. In embodiments, the toner particles may have a core-shell configuration, with the high molecular weight polyester in the core, the shell, or both.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: March 13, 2012
    Assignee: Xerox Corporation
    Inventors: Maria N. V. McDougall, Ke Zhou, Edward G. Zwartz, Daryl W. Vanbesien, John L. Pawlak, Paul J. Gerroir, Suxia Yang, Richard P. N. Veregin, Karen Ann Moffat
  • Toner compositions
    Patent number: 8092972
    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: August 27, 2008
    Date of Patent: January 10, 2012
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Edward G. Zwartz, Karen Ann Moffat
  • Toner compositions
    Patent number: 8084180
    Abstract: Toner particles are provided which may, in embodiments, include a core possessing at least one polyester resin in combination with a colorant, optional wax, and optional other additives, and a shell over the core including a high molecular weight amorphous polyester resin. The high molecular weight amorphous polyester resin in the shell may prevent any crystalline polyester resin in the core from migrating to the toner surface.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: December 27, 2011
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Maria N. V. McDougall, Edward G. Zwartz, Karen Ann Moffat, Paul J. Gerroir
  • Toners containing polyhedral oligomeric silsesquioxanes
    Patent number: 8084177
    Abstract: Disclosed is a toner composition comprising toner particles which comprise a resin, an optional colorant, and a polyhedral oligomeric silsesquioxane compound.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: December 27, 2011
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Karen A. Moffat, Maria N V. McDougall, Richard P N. Veregin, Edward G. Zwartz
  • Curable toner compositions and processes
    Patent number: 8073376
    Abstract: Processes for producing emulsion aggregation toners are provided. In embodiments, methods of the present disclosure may be utilized to produce toners suitable for low melt applications, including use in flexible packaging applications, where low pile height is desired for low cost and flexibility. In embodiments, the EA toners may be prepared by optimizing the particle size of the emulsion, the choice of and amount of aggregating agent utilized, and the solids content of the emulsion.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: December 6, 2011
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Nathan C. Dyck, Daryl W. Vanbesien, Edward G. Zwartz, Cuong Vong
  • Curable toner compositions and processes
    Patent number: 8039187
    Abstract: An emulsion aggregation toner composition includes toner particles including: an unsaturated polymeric resin, selected from amorphous resins, crystalline resins, and mixtures thereof; an optional colorant; an optional wax; an optional coagulant; and a photo initiator capable of initiating crosslinking of said unsaturated polymeric resin.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: October 18, 2011
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Jessica E. Pudwell, Edward G. Zwartz, T. Brian McAneney
  • Toner process
    Patent number: 8013074
    Abstract: The present disclosure relates to a toner process comprising providing a resin miniemulsion comprising polymeric particles comprising at least one free radical polymerizable monomer compound and at least one alkylene anhydride; blending the miniemulsion with at least one colorant, at least one amine, and optionally at least one wax; heating the resulting mixture below or about equal to the glass transition temperature (Tg) of the resin emulsion; and heating the resulting mixture above or about equal to the glass transition temperature (Tg) of the resin emulsion.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: September 6, 2011
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Raj Patel, Edward G. Zwartz, Cuong Vong
  • BIO-BASED AMORPHOUS POLYESTER RESINS FOR EMULSION AGGREGATION TONERS
    Publication number: 20110212396
    Abstract: Disclosed are amorphous polyesters that contain only renewable resources designed for emulsion aggregation toner fabrication. The amorphous polyesters may be obtained from the mixture of three different monomers: 1,4:3,6-dianhydro-D-sorbitol (isosorbide), nonanedioic acid (azelaic acid), and butanedioic acid (succinic acid). Different polymer properties may be achieved depending on the ratio of these three monomers. By altering the ratio, polymers of high to low acid value can be obtained, as well as different ranges of glass transition temperatures.
    Type: Application
    Filed: March 1, 2010
    Publication date: September 1, 2011
    Applicant: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Guerino Sacripante, Ke Zhou, Edward G. Zwartz, Michael S. Hawkins
  • TONER COMPOSITIONS AND PROCESSES
    Publication number: 20110207046
    Abstract: A process for preparing a toner includes forming an emulsion with a buffer solution and an amorphous biodegradable polyester resin represented by Formula (1): wherein each n independently represents an integer of 1 to about 20 and x and y represent respective ratios of respective monomeric units and x ranges from about 0 to about 1000 and y ranges from about 0 to about 300; adding a colorant, a coagulant, and optionally a wax to the emulsion to form a mixture; heating the mixture, permitting aggregation and coalescence of the mixture to form toner particles; and recovering the toner particles.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 25, 2011
    Applicant: XEROX CORPORATION
    Inventors: Ke ZHOU, Guerino G. SACRIPANTE, Edward G. ZWARTZ, Michael S. HAWKINS