Patents by Inventor Grazyna E. Kmiecik-Lawrynowicz

Grazyna E. Kmiecik-Lawrynowicz 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).

  • Publication number: 20130252162
    Abstract: A process includes forming particles in a latex by emulsion polymerization of a mixture including one or more monomers in an emulsion, and about 4 percent or less by weight of the mixture of a non-surfactant-based charge control agent, the non-surfactant-based charge control agent is distributed within a matrix of the particles, and forming toner particles from the particles in the latex, the toner particles supporting a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.
    Type: Application
    Filed: May 16, 2013
    Publication date: September 26, 2013
    Applicant: XEROX CORPORATION
    Inventors: Robert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Susan J. LaFica
  • Publication number: 20130236825
    Abstract: Toner particles include a shell and a core, wherein the shell includes charge control agent-treated spacer particles that cause protrusions from the toner particle surface.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Applicant: XEROX CORPORATION
    Inventors: Maura A. SWEENEY, Robert D. BAYLEY, Grazyna E. KMIECIK-LAWRYNOWICZ, Anne Marie SWEENEY-JONES
  • Patent number: 8475994
    Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics. In embodiments, the toner particles are washed with a solution containing metal ions that impart desirable charging characteristics to the toner particles.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: July 2, 2013
    Assignee: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-lawrynowicz, Robert D. Bayley, Maura A. Sweeney, Mark E. Mang
  • Publication number: 20130157188
    Abstract: Disclosed is a toner composition comprising: (a) a resin; and (b) a colorant which comprises: (1) Pigment Red 269; (2) Pigment Red 185; and (3) Pigment Red 122.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Applicant: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Mark E. Mang, Kirk L. Stamp, Robert D. Bayley
  • Patent number: 8455171
    Abstract: The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a carboxylic acid may be added to materials utilized to produce a latex and reduce the particle size of the resulting latex particles and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the carboxylic acid.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: June 4, 2013
    Assignee: Xerox Corporation
    Inventors: Robert D. Bayley, Timothy L. Lincoln, Kevin F. Marcell, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Chieh-Min Cheng, Zhen Lai
  • Publication number: 20130101935
    Abstract: A toner is described containing low melt wax and having a core and shell, which toner exhibits improved fusing performance as compared to a toner produced with a high melt wax in the core; having a core resin with a Tg equal to or lower than that of the shell resin; or both.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 25, 2013
    Applicant: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Daniel A. Asarese, Maura A. Sweeney, Robert D. Bayley, Mark Mang
  • Patent number: 8394566
    Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and HMDS silica. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry theological properties. These improved properties make this toner composition useful for higher speed printing while using less toner.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: March 12, 2013
    Assignee: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Samir Kumar, Juan A. Morales-Tirado, Michael F. Zona
  • Publication number: 20130052581
    Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics. In embodiments, the toner particles are washed with a solution containing metal ions that impart desirable charging characteristics to the toner particles.
    Type: Application
    Filed: August 23, 2011
    Publication date: February 28, 2013
    Applicant: XEROX CORPORATION
    Inventors: Grazyna E. Kmiecik-lawrynowicz, Robert D. Bayley, Maura A. Sweeney, Mark E. Mang
  • Publication number: 20120288790
    Abstract: The present disclosure describes processes for making clear, high-gloss toners, including toner compositions resulting from such processes that find applications in overcoating and gloss enhancement.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 15, 2012
    Applicant: XEROX CORPORATION
    Inventors: Maura Sweeney, Grazyna E. Kmiecik-Lawrynowicz, Robert D. Bayley, Dan Asarese
  • Publication number: 20120225378
    Abstract: Included is an emulsion aggregation toner formulation having at least one latex and a combination of at least two waxes, wherein one wax is a synthetic wax, and another wax is a natural wax, and further including a developer containing a carrier and the just-described toner.
    Type: Application
    Filed: March 6, 2012
    Publication date: September 6, 2012
    Applicant: XEROX CORPORATION
    Inventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Eugene F. Young, William H. Hollenbaugh, JR., Eunhee Lee
  • Publication number: 20120129089
    Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and two HMDS silicas. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry rheological properties and improved fix properties. These improved properties make this toner composition useful for higher speed printing while using less toner.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 24, 2012
    Applicant: XEROX CORPORATION
    Inventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Maura A. SWEENEY, Daniel W. ASARESE, Robert CORLETO, Samir KUMAR, Juan A. MORALES-TIRADO, Michael F. ZONA
  • Publication number: 20120129088
    Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and HMDS silica. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry theological properties. These improved properties make this toner composition useful for higher speed printing while using less toner.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 24, 2012
    Applicant: XEROX CORPORATION
    Inventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Maura A. SWEENEY, Daniel W. ASARESE, Samir KUMAR, Juan A. MORALES-TIRADO, Michael F. ZONA
  • Patent number: 8132451
    Abstract: A system, method and device for measuring toner performance by randomly applying a toner sample having toner particles to a substrate, and positioning the substrate such that a force may be applied to individual particles of the measuring toner. A rolling resistance or rotation of the individual particles of the measuring toner is measured. The measurements may be analyzed to determine adhesion and distribution properties of individual toner particles of the measuring toner sample.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: March 13, 2012
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Grazyna E. Kmiecik-Lawrynowicz, Weiqiang Ding, Cetin Cetinkaya
  • Patent number: 8092973
    Abstract: The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a gel latex may be formed as a seed particle and then utilized to form latex resins and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the gel latex.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: January 10, 2012
    Assignee: Xerox Corporation
    Inventors: Zhen Lai, Chieh-Min Cheng, Robert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel G. Marsh, Emily L. Moore, Shigang Qiu, Tie Hwee Ng
  • Publication number: 20110086304
    Abstract: The present disclosure provides toners and methods for their production. In embodiments, the toner may include a core/shell configuration, with a non-crosslinked resin and a crosslinked resin in the core, with a second non-crosslinked resin in the shell, pigment/pigments and a wax possessing both branched and linear carbons.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 14, 2011
    Applicant: Xerox Corporation
    Inventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Samir Kumar, Maura A. Sweeney, Siddhesh N. Pawar, Robert D. Bayley
  • Publication number: 20110086306
    Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics. In embodiments, the charge control agents include copolymers formed by an emulsion polymerization process.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 14, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert D. Bayley, Yuhua Tong, Timothy L. Lincoln, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Susan J. LaFica, Mark E. Mang
  • Publication number: 20100313644
    Abstract: A system, method and device for measuring toner performance by randomly applying a toner sample having toner particles to a substrate, and positioning the substrate such that a force may be applied to individual particles of the measuring toner. A rolling resistance or rotation of the individual particles of the measuring toner is measured. The measurements may be analyzed to determine adhesion and distribution properties of individual toner particles of the measuring toner sample.
    Type: Application
    Filed: June 10, 2009
    Publication date: December 16, 2010
    Applicant: XEROX CORPORATION
    Inventors: Kock-Yee LAW, Grazyna E. KMIECIK-LAWRYNOWICZ, Weiqiang DING, Cetin CETINKAYA
  • Patent number: 7781135
    Abstract: A toner for developing electrostatic images including emulsion aggregation toner particles with a styrene acrylate latex resin, at least one additive, at least one colorant, and a charge control agent comprising 3,5 di-tert-butylsalicyclic acid zinc salt.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: August 24, 2010
    Assignee: Xerox Corporation
    Inventors: Daniel W Asarese, Sarah Paulson, Maura A Sweeney, Grazyna E Kmiecik-Lawrynowicz
  • Patent number: 7704662
    Abstract: A toner for use in a single component development system, said toner including emulsion aggregation toner particles with a styrene acrylate polymer binder resin having a molecular weight Mw of from about 50 to about 100 Kpse and a number average molecular weight (Mn) of from about 10 to about 30 Kpse, a wax selected from the group consisting of polypropylene and polyethylene, and at least one colorant, wherein the toner particles have an onset glass transition temperature of from about 50° C. to about 60° C., and a circularity of from about 0.950 to about 0.990.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: April 27, 2010
    Assignee: Xerox Corporation
    Inventors: Grazyna E Kmiecik-Lawrynowicz, Daniel W Asarese, Maura A Sweeney, Robert D Bayley
  • Patent number: 7704665
    Abstract: A method for developing toner for use in a single component development system, wherein the process includes a) contacting a styrene acrylate polymer binder resin having a weight average molecular weight (Mw) of from about 50 to about 100 Kpse, and a number average molecular weight (Mn) of from about 10 to about 30 Kpse, a wax selected from the group consisting of polypropylene and polyethylene, and at least one colorant to produce a toner blend, b) aggregating the blend by heating at a temperature at or above the glass transition temperature of the styrene acrylate resin to form an aggregated toner core; c) adding a second binder resin to the aggregated toner core to form a shell over said toner core thereby forming a core-shell toner; d) growing said core-shell toner to a desired size; e) coalescing the core-shell toner by heating at a temperature above the glass transition temperature of the second latex; and f) recovering toner particles, wherein the toner particles have an onset glass transition temperat
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: April 27, 2010
    Assignee: Xerox Corporation
    Inventors: Grazyna E Kmiecik-Lawrynowicz, Daniel W Asarese, Maura A Sweeney, Robert D Bayley