Patents by Inventor Melanie Lynn Davis

Melanie Lynn Davis 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).

  • Patent number: 11644760
    Abstract: Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles including at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin including a fluorinated monomer, wherein the polymeric resin is less than 10% by weight crosslinked, and optionally a charge control agent comprising nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: May 9, 2023
    Assignee: XEROX CORPORATION
    Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
  • Publication number: 20230097294
    Abstract: Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles comprising at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin comprising a cross-linked fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt% to 40 wt% of the polymeric resin, and optionally a charge control agent comprising nitrogen containing group at 0.1 wt% to 1.5 wt% of the polymeric resin.
    Type: Application
    Filed: September 16, 2021
    Publication date: March 30, 2023
    Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
  • Patent number: 11579138
    Abstract: A method for assessing polymeric additive content A in a polymeric particle mixture may comprise determining a concentration B of a metal cation in a polymeric particle mixture comprising parent polymeric particles and polymeric additive particles, wherein the metal cation is selected from alkali earth metals and alkali metals, other than sodium (Na), and the metal cation is capable of forming a water-soluble base; determining a concentration C of the metal cation in the parent polymeric particles; determining a concentration D of the metal cation in the polymeric additive particles; and calculating a polymeric additive content A using formula A=(B?C)/D.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: February 14, 2023
    Assignee: Xerox Corporation
    Inventors: Richard P. N. Veregin, Kimberly D. Nosella, Rosa M. Duque, Melanie Lynn Davis, David R. Kurceba, Cuong Vong
  • Patent number: 11397387
    Abstract: Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles including at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin including a fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt % to 40 wt % of the polymeric resin, and optionally a charge control agent comprised of a nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: July 26, 2022
    Assignee: Xerox Corporation
    Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
  • Publication number: 20220137526
    Abstract: Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles including at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin including a fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt % to 40 wt % of the polymeric resin, and optionally a charge control agent comprised of a nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.
    Type: Application
    Filed: November 2, 2020
    Publication date: May 5, 2022
    Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
  • Publication number: 20220137524
    Abstract: Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles including at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin including a fluorinated monomer, wherein the polymeric resin is less than 10% by weight crosslinked, and optionally a charge control agent comprising nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.
    Type: Application
    Filed: November 2, 2020
    Publication date: May 5, 2022
    Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
  • Patent number: 11150568
    Abstract: A toner including toner particles comprising at least one resin, in combination with an optional colorant, and an optional wax; and a copolymer toner additive on at least a portion of an external surface of the toner particles, the copolymer toner additive comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; and a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 60 percent by weight, based on the weight of the copolymer; wherein the copolymer toner additive has a volume average particle diameter of from about 20 nanometers to less than about 70 nanometers. An emulsion aggregation toner process including the copolymer as a toner surface additive.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 19, 2021
    Assignee: Xerox Corporation
    Inventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Melanie Lynn Davis, Cuong Vong
  • Patent number: 11126103
    Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: September 21, 2021
    Assignee: Xerox Corporation
    Inventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Scott Edward Silver, Melanie Lynn Davis, Cuong Vong
  • Publication number: 20210164960
    Abstract: A method for assessing polymeric additive content A in a polymeric particle mixture may comprise determining a concentration B of a metal cation in a polymeric particle mixture comprising parent polymeric particles and polymeric additive particles, wherein the metal cation is selected from alkali earth metals and alkali metals, other than sodium (Na), and the metal cation is capable of forming a water-soluble base; determining a concentration C of the metal cation in the parent polymeric particles; determining a concentration D of the metal cation in the polymeric additive particles; and calculating a polymeric additive content A using formula A=(B?C)/D.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 3, 2021
    Inventors: Richard P. N. Veregin, Kimberly D. Nosella, Rosa M. Duque, Melanie Lynn Davis, David R. Kurceba, Cuong Vong
  • Publication number: 20200310274
    Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.
    Type: Application
    Filed: June 4, 2020
    Publication date: October 1, 2020
    Inventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Scott Edward Silver, Melanie Lynn Davis, Cuong Vong
  • Publication number: 20200310268
    Abstract: A toner including toner particles comprising at least one resin, in combination with an optional colorant, and an optional wax; and a copolymer toner additive on at least a portion of an external surface of the toner particles, the copolymer toner additive comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; and a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 60 percent by weight, based on the weight of the copolymer; wherein the copolymer toner additive has a volume average particle diameter of from about 20 nanometers to less than about 70 nanometers. An emulsion aggregation toner process including the copolymer as a toner surface additive.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Inventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Melanie Lynn Davis, Cuong Vong
  • Patent number: 10725394
    Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: July 28, 2020
    Assignee: Xerox Corporation
    Inventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Scott Edward Silver, Melanie Lynn Davis, Cuong Vong
  • Publication number: 20160216624
    Abstract: The disclosure provides sustainable toner particles of from about 180 nm to about 250 nm in a sustainable toner composition having a hot offset temperature of from about 190° C. to about 220° C.
    Type: Application
    Filed: April 4, 2016
    Publication date: July 28, 2016
    Inventors: Ke Zhou, Guerino G. Sacripante, Richard Philip Nelson Veregin, Edward Graham Zwartz, Abdisamed Sheik Qasim, Rashid Mahmood, Mark R. Elliott, Cuong Vong, Melanie Lynn Davis
  • Patent number: 9383666
    Abstract: Toners and processes useful in providing toners suitable for electrophotographic apparatuses, including apparatuses such as digital, image-on-image, and similar apparatuses. In particular, emulsion aggregation toners that comprise toner particles having a core composed of either polyester resin or both styrene-acrylate and polyester resins. These embodiments also comprise a shell disposed over the core, wherein the shell comprises styrene-acrylate resin.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: July 5, 2016
    Assignee: XEROX CORPORATION
    Inventors: David J. W. Lawton, Richard P. N. Veregin, Guerino G. Sacripante, Melanie Lynn Davis, Edward G. Zwartz
  • Patent number: 9372422
    Abstract: The disclosure provides sustainable toner particles of from about 180 nm to about 250 nm in a sustainable toner composition having a hot offset temperature of from about 190° C. to about 220° C.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: June 21, 2016
    Assignee: XEROX CORPORATION
    Inventors: Ke Zhou, Guerino G. Sacripante, Richard Philip Nelson Veregin, Edward Graham Zwartz, Abdisamed Sheik Qasim, Rashid Mahmood, Mark R. Elliott, Cuong Vong, Melanie Lynn Davis
  • Patent number: 9341968
    Abstract: The disclosure provides a toner composition comprising toner particles with a core and a shell, wherein the core comprises a polyester polymer and a styrene acrylate polymer, and the shell comprises a polyester polymer and, optionally, a styrene acrylate polymer, either or both of which can be the same or different from that in the core.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: May 17, 2016
    Assignee: XEROX CORPORATION
    Inventors: David Lawton, Edward G. Zwartz, Kimberly D. Nosella, Melanie Lynn Davis, Richard P. N. Veregin, Guerino G. Sacripante
  • Publication number: 20150205219
    Abstract: The disclosure provides sustainable toner particles of from about 180 nm to about 250 nm in a sustainable toner composition having a hot offset temperature of from about 190° C. to about 220° C.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 23, 2015
    Applicant: Xerox Corporation
    Inventors: Ke Zhou, Guerino G. Sacripante, Richard Philip Nelson Veregin, Edward Graham Zwartz, Abdisamed Sheik Qasim, Rashid Mahmood, Mark R. Elliott, Cuong Vong, Melanie Lynn Davis
  • Patent number: 8647805
    Abstract: The present disclosure provides processes for producing toners. In embodiments, flow aids are added to a wet cake including the toner particles, prior to drying. The addition of the flow aid improves flow characteristics of the toner, thereby enhancing overall drying time, reducing the amount of coarse particles, and improving yield, without adversely affecting fusing and charging of the toner particles.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: February 11, 2014
    Assignee: Xerox Corporation
    Inventors: Kimberly D. Nosella, Melanie Lynn Davis, Cuong Vong, Abdisamed Sheik-Qasim
  • Patent number: 8586272
    Abstract: The present disclosure provides toner compositions able to prevent the formation of mold or bacterial growth during storage. In embodiments, toners may include at least one biocide that prevents the formation of mold and/or bacteria in a toner composition, including any emulsion that may be utilized in forming the toner composition. In embodiments, the biocide may also improve charging characteristics of the toner.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: November 19, 2013
    Assignee: Xerox Corporation
    Inventors: Kimberly D. Nosella, Maria N. V. McDougall, Melanie Lynn Davis
  • Publication number: 20120189956
    Abstract: The present disclosure provides processes for producing toners. In embodiments, alkyl or alkyl ether sulfates are used in a solvent-free toner production process as surfactants to provide for higher parent particle charge without adversely affecting particle size, distribution control and circularity of the toner particles. The present disclosure also provides a new formulation and process for the emulsification of polyester resins to form nano-scale particles dispersed in water (latex) without the use of organic solvents by an extrusion process.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 26, 2012
    Applicant: XEROX CORPORATION
    Inventors: Allan K. Chen, Santiago Faucher, John L. Pawlak, Joo T. Chung, Shigang S. Qiu, Michael S. Hawkins, Edward G. Zwartz, Abdisamed Sheik-Qasim, Melanie Lynn Davis