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: 20200050121
    Abstract: The present disclosure provides toners and toner processes. In embodiments, a toner is provided which comprises a first resin having a weight average molecular weight of no more than about 28,000 and an onset second heat Tg of no more than about 50° C.; a second resin having a weight average molecular weight greater than that of the first resin; and a paraffin wax having a melting point in the range of from about 65° C. to about 95° C.
    Type: Application
    Filed: August 13, 2018
    Publication date: February 13, 2020
    Inventors: Robert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Edward G. Zwartz
  • Patent number: 10409185
    Abstract: Methods of forming a toner are provided. In embodiments, such a method comprises forming a toner from a mixture of at least one resin, at least one wax, and optionally, at least one colorant, wherein the at least one wax is of a type and is present at an amount which are selected to provide a predetermined PER10 value for the toner; and measuring a PER10 value for the toner, wherein the measured PER10 value for the toner is equal to or less than the predetermined PER10 value. Toners formed using the methods are also provided.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: September 10, 2019
    Assignee: Xerox Corporation
    Inventors: Siddhesh Nitin Pawar, Juan A. Morales-Tirado, Grazyna E. Kmiecik-Lawrynowicz, Daniel W. Asarese, Jordan A. Frank
  • Publication number: 20190243271
    Abstract: Methods of forming a toner are provided. In embodiments, such a method comprises forming a toner from a mixture of at least one resin, at least one wax, and optionally, at least one colorant, wherein the at least one wax is of a type and is present at an amount which are selected to provide a predetermined PER10 value for the toner; and measuring a PER10 value for the toner, wherein the measured PER10 value for the toner is equal to or less than the predetermined PER10 value. Toners formed using the methods are also provided.
    Type: Application
    Filed: February 8, 2018
    Publication date: August 8, 2019
    Inventors: Siddhesh Nitin Pawar, Juan A. Morales-Tirado, Grazyna E. Kmiecik-Lawrynowicz, Daniel W. Asarese, Jordan A. Frank
  • Patent number: 9541851
    Abstract: A low energy consumption monochrome particle includes a core latex having a core a glass transition temperature and a weight average molecular weight. A shell encapsulates the core and includes a shell latex having a shell glass transition temperature and a weight average molecular weight. The glass transition temperature of the shell latex is higher than the glass transition temperature of the core latex. The weight average molecular weight of the shell latex is lower or higher than the weight average molecular weight of the core latex. The low energy consumption monochrome particles are suitable for high speed printing in SCD systems while decreasing minimum fusing temperature, maintaining excellent hot offset and storage, and exhibiting a matte finish.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: January 10, 2017
    Assignee: XEROX CORPORATION
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Robert D. Bayley, Maura A. Sweeney, Daniel A. Asarese, Susan J. Lafica
  • Patent number: 9417544
    Abstract: A low energy consumption monochrome toner includes a surface additive package having a high charging silica compound, an aerating silica compound, a colloidal silica compound, a polymeric spacer, and a crosslinked spacer. The low energy consumption monochrome toner is suitable for high speed printing in SCD systems while decreasing minimum fusing temperature, maintaining excellent hot offset and storage, and exhibiting a matte finish.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: August 16, 2016
    Assignee: XEROX CORPORATION
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Robert D. Bayley, Maura A. Sweeney, Daniel W. Asarese, Karen L. Lamora
  • Patent number: 9239531
    Abstract: The present disclosure describes a color single component toner with desirable fusing performance.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: January 19, 2016
    Assignee: Xerox Corporation
    Inventors: Grazyna E Kmiecik-Lawrynowicz, Michael F Zona, Mark E Mang, Maura A Sweeney, Robert D Bayley
  • Patent number: 9176403
    Abstract: A process includes forming, by emulsion polymerization, polymer resin particles in a latex, the polymer resin particles being formed from a mixture including one or more monomer emulsions and a non-surfactant-based charge control agent, the emulsion polymerization is carried out with a solids content in a range from about 10 to about 30 percent by weight of the mixture, and forming toner particles from the polymer resin particles, the toner particles support a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: November 3, 2015
    Assignee: XEROX CORPORATION
    Inventors: Karen Moffat, Shigang Steven Qiu, Samir Kumar, Robert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney
  • Patent number: 9164410
    Abstract: A toner composition with a novel surface additive package for developing images is provided. The additive package comprises a sol-gel silica, a PDMS silica, an HMDS silica, and an organic spacer such as PMMA, and melamine. The toner composition exhibits improved properties and are useful for high speed printing on Single Component Development systems.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 20, 2015
    Assignee: XEROX CORPORATION
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Samir Kumar
  • Patent number: 9134640
    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: Grant
    Filed: May 13, 2011
    Date of Patent: September 15, 2015
    Assignee: Xerox Corporation
    Inventors: Maura Sweeney, Grazyna E. Kmiecik-Lawrynowicz, Robert D. Bayley, Dan Asarese
  • Publication number: 20150227072
    Abstract: A low energy consumption monochrome toner includes a surface additive package having a high charging silica compound, an aerating silica compound, a colloidal silica compound, a polymeric spacer, and a crosslinked spacer. The low energy consumption monochrome toner is suitable for high speed printing in SCD systems while decreasing minimum fusing temperature, maintaining excellent hot offset and storage, and exhibiting a matte finish.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 13, 2015
    Applicant: XEROX CORPORATION
    Inventors: GRAZYNA E. KMIECIK-LAWRYNOWICZ, ROBERT D. BAYLEY, MAURA A. SWEENEY, DANIEL W. ASARESE, KAREN L. LAMORA
  • Publication number: 20150153672
    Abstract: A low energy consumption monochrome particle includes a core latex having a core a glass transition temperature and a weight average molecular weight. A shell encapsulates the core and includes a shell latex having a shell glass transition temperature and a weight average molecular weight. The glass transition temperature of the shell latex is higher than the glass transition temperature of the core latex. The weight average molecular weight of the shell latex is lower or higher than the weight average molecular weight of the core latex. The low energy consumption monochrome particles are suitable for high speed printing in SCD systems while decreasing minimum fusing temperature, maintaining excellent hot offset and storage, and exhibiting a matte finish.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 4, 2015
    Applicant: XEROX CORPORATION
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Robert D. Bayley, Maura A. Sweeney, Daniel A. Asarese, Susan J. Lafica
  • Patent number: 9046799
    Abstract: Disclosed is an emulsion aggregation toner substantially free of added colorants comprising a resin and a silicone wax of the formula wherein the silicone wax has a weight average molecular weight of from about 5,000 to about 17,000 and a melting temperature of from about 38° C. to about 65° C.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: June 2, 2015
    Assignee: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Robert D. Bayley, Witold J. Lawrynowicz
  • Patent number: 9029057
    Abstract: Emulsion aggregation toner comprising: a resin; a wax; a colorant; an encapsulating shell; and a silica external additive comprising: first silica particles comprising fumed silica particles surface treated with octyldimethylsiloxane and having average particle diameter about 6-20 nm, present in amount of about 0.1-1% by weight of the toner; second silica particles comprising colloidal silica particles surface treated with hexamethyldisiloxane and having average particle diameter about 80-200 nm, present in amount of about 1-2% by weight of the toner; third silica particles comprising fumed silica particles surface treated with polydimethylsiloxane and having average particle diameter about 25-65 nm, present in amount of from about 0.5-1.5% by weight of the toner; and fourth silica particles comprising fumed silica particles surface treated with hexamethyldisiloxane and having average particle diameter about 25-65 nm, present in amount of about 1-2.5% by weight of the toner.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: May 12, 2015
    Assignee: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Samir Kumar, Daniel W. Asarese
  • Patent number: 9023567
    Abstract: A toner particle has a core and a shell surrounding the core, wherein the shell contains a polymerized charge enhanced spacer particle, which is a copolymer of a charge control agent and a monomer. A method of making toner particles includes forming a slurry by mixing together a first emulsion containing a resin, optionally a wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additive, heating the slurry to form aggregated particles in the slurry, forming a second emulsion containing a monomer and a charge control agent, polymerizing the second emulsion to form a copolymer of the monomer and the charge control agent, and incorporating the copolymer into the toner particles, wherein the aggregated particles form a core of the toner particles.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: May 5, 2015
    Assignee: Xerox Corporation
    Inventors: Robert D. Bayley, Maura A. Sweeney, Grazyna E. Kmiecik-Lawrynowicz
  • Patent number: 9005867
    Abstract: A process includes forming a filter cake from a slurry of emulsion aggregation toner particles and washing the filter cake with an alcohol to create porous toner particles.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: April 14, 2015
    Assignee: Xerox Corporation
    Inventors: Mark E. Mang, Grazyna E. Kmiecik-Lawrynowicz, Mark A. Arnould, Dieu Nguyen
  • Publication number: 20150044606
    Abstract: A process includes forming a filter cake from a slurry of emulsion aggregation toner particles and washing the filter cake with an alcohol to create porous toner particles.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 12, 2015
    Applicant: XEROX CORPORATION
    Inventors: Mark E. Mang, Grazyna E. Kmiecik-Lawrynowicz, Mark A. Arnould, Dieu Nguyen
  • Publication number: 20150024323
    Abstract: A process includes forming, by emulsion polymerization, polymer resin particles in a latex, the polymer resin particles being formed from a mixture including one or more monomer emulsions and a non-surfactant-based charge control agent, the emulsion polymerization is carried out with a solids content in a range from about 10 to about 30 percent by weight of the mixture, and forming toner particles from the polymer resin particles, the toner particles support a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.
    Type: Application
    Filed: July 16, 2013
    Publication date: January 22, 2015
    Inventors: KAREN MOFFAT, SHIGANG STEVEN QIU, SAMIR KUMAR, ROBERT D. BAYLEY, GRAZYNA E. KMIECIK-LAWRYNOWICZ, MAURA A. SWEENEY
  • Publication number: 20150004536
    Abstract: A toner composition with a novel surface additive package for developing images is provided. The additive package comprises a sol-gel silica, a PDMS silica, an HMDS silica, and an organic spacer such as PMMA, and melamine. The toner composition exhibits improved properties and are useful for high speed printing on Single Component Development systems.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: GRAZYNA E. KMIECIK-LAWRYNOWICZ, MAURA A. SWEENEY, DANIEL W. ASARESE, SAMIR KUMAR
  • Publication number: 20140370430
    Abstract: A toner particle includes a core containing a styrene-based resin; a low melting point wax; optionally an additive package; and optionally a colorant, wherein the low melting point wax has a melting point of less than about 80° C. A method of making a toner particle includes forming a slimy by mixing together an emulsion containing a resin, a low melting point wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additives; and heating the slurry to form aggregated particles in the slurry, wherein the aggregated particles form a core of the toner particles; and the low melting point wax has a melting point of less than about 80° C.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Inventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Samir KUMAR, Robert D. BAYLEY, Maura A. SWEENEY
  • Publication number: 20140356776
    Abstract: A toner particle includes a core including at least one resin, optionally a wax, and a colorant, and a shell comprising at least one charge control agent. The core is substantially free of the charge control agent. The toner particle has improved charging performance compared with core-shell toner particles having the charge control agent in the core of the toner particle.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Inventors: ROBERT D. BAYLEY, MAURA A. SWEENEY, GRAZYNA E. KMIECIK-LAWRYNOWICZ, SHIGANG STEVEN QIU, TIE HWEE NG