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).
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Patent number: 11644760Abstract: 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: GrantFiled: November 2, 2020Date of Patent: May 9, 2023Assignee: XEROX CORPORATIONInventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
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Publication number: 20230097294Abstract: 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: ApplicationFiled: September 16, 2021Publication date: March 30, 2023Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
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Patent number: 11579138Abstract: 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: GrantFiled: December 3, 2019Date of Patent: February 14, 2023Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D. Nosella, Rosa M. Duque, Melanie Lynn Davis, David R. Kurceba, Cuong Vong
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Patent number: 11397387Abstract: 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: GrantFiled: November 2, 2020Date of Patent: July 26, 2022Assignee: Xerox CorporationInventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
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Publication number: 20220137526Abstract: 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: ApplicationFiled: November 2, 2020Publication date: May 5, 2022Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
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Publication number: 20220137524Abstract: 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: ApplicationFiled: November 2, 2020Publication date: May 5, 2022Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Melanie Lynn Davis, Cuong Vong
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Patent number: 11150568Abstract: 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: GrantFiled: March 29, 2019Date of Patent: October 19, 2021Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Melanie Lynn Davis, Cuong Vong
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Patent number: 11126103Abstract: 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: GrantFiled: June 4, 2020Date of Patent: September 21, 2021Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Scott Edward Silver, Melanie Lynn Davis, Cuong Vong
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Publication number: 20210164960Abstract: 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: ApplicationFiled: December 3, 2019Publication date: June 3, 2021Inventors: Richard P. N. Veregin, Kimberly D. Nosella, Rosa M. Duque, Melanie Lynn Davis, David R. Kurceba, Cuong Vong
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Publication number: 20200310274Abstract: 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: ApplicationFiled: June 4, 2020Publication date: October 1, 2020Inventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Scott Edward Silver, Melanie Lynn Davis, Cuong Vong
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Publication number: 20200310268Abstract: 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: ApplicationFiled: March 29, 2019Publication date: October 1, 2020Inventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Melanie Lynn Davis, Cuong Vong
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Patent number: 10725394Abstract: 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: GrantFiled: March 29, 2019Date of Patent: July 28, 2020Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Scott Edward Silver, Melanie Lynn Davis, Cuong Vong
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Publication number: 20160216624Abstract: 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: ApplicationFiled: April 4, 2016Publication date: July 28, 2016Inventors: 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
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Patent number: 9383666Abstract: 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: GrantFiled: April 1, 2015Date of Patent: July 5, 2016Assignee: XEROX CORPORATIONInventors: David J. W. Lawton, Richard P. N. Veregin, Guerino G. Sacripante, Melanie Lynn Davis, Edward G. Zwartz
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Patent number: 9372422Abstract: 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: GrantFiled: January 22, 2014Date of Patent: June 21, 2016Assignee: XEROX CORPORATIONInventors: 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
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Patent number: 9341968Abstract: 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: GrantFiled: April 1, 2015Date of Patent: May 17, 2016Assignee: XEROX CORPORATIONInventors: David Lawton, Edward G. Zwartz, Kimberly D. Nosella, Melanie Lynn Davis, Richard P. N. Veregin, Guerino G. Sacripante
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Publication number: 20150205219Abstract: 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: ApplicationFiled: January 22, 2014Publication date: July 23, 2015Applicant: Xerox CorporationInventors: 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
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Patent number: 8647805Abstract: 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: GrantFiled: September 22, 2010Date of Patent: February 11, 2014Assignee: Xerox CorporationInventors: Kimberly D. Nosella, Melanie Lynn Davis, Cuong Vong, Abdisamed Sheik-Qasim
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Patent number: 8586272Abstract: 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: GrantFiled: July 28, 2009Date of Patent: November 19, 2013Assignee: Xerox CorporationInventors: Kimberly D. Nosella, Maria N. V. McDougall, Melanie Lynn Davis
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Publication number: 20120189956Abstract: 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: ApplicationFiled: January 26, 2011Publication date: July 26, 2012Applicant: XEROX CORPORATIONInventors: 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