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公开(公告)号：US11086244B1
公开(公告)日：2021-08-10
申请号：US16800236
申请日：2020-02-25
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Michael F. Zona , Jordan A. Frank , Daniel W. Asarese , Chieh-Min Cheng , Paul K. Acquaviva
Abstract: A toner including a parent toner particle comprising at least one resin, in combination with an optional colorant, and an optional wax; and a surface additive formulation comprising at least one medium silica surface additive; at least one large cross-linked organic polymeric additive; at least one positive charging surface additive, wherein the at least one positive charging surface additive is (a) a titanium dioxide surface additive; and wherein the parent toner particles further contain a small silica; or (b) a non-titanium dioxide positive charging metal oxide surface additive; and wherein the parent toner particles further optionally contain a small silica; and wherein a total surface area coverage of all of the surface additives combined is 100 to 140 percent of the parent toner particle surface area.
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公开(公告)号：US20200310268A1
公开(公告)日：2020-10-01
申请号：US16369126
申请日：2019-03-29
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Shivanthi Easwari Sriskandha , David R. Kurceba , Melanie Lynn Davis , Cuong Vong
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.
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公开(公告)号：US20200225598A1
公开(公告)日：2020-07-16
申请号：US16246898
申请日：2019-01-14
Applicant: Xerox Corporation
Inventor： Shivanthi Easwari Sriskandha , Richard P. N. Veregin , Guerino G. Sacripante , Edward G. Zwartz , Michael Steven Hawkins
Abstract: A toner process including a) mixing reagents comprising at least one amorphous resin, an optional crystalline resin, an optional styrene, acrylate or styrene/acrylate, an optional wax, and an optional colorant to form an emulsion comprising a resin particle; b) adding at least one aggregating agent and aggregating said resin particle to form a nascent toner particle; c) optionally, adding one or more resins to form a shell on said nascent toner particle to yield a core-shell particle; d) adding a first chelating agent and a second chelating agent; wherein said first chelating agent and said second chelating agent are different; e) freezing particle growth to form an aggregated toner particle; f) coalescing said aggregated toner particle to form a toner particle; and g) optionally, collecting said toner particle.
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公开(公告)号：US10018930B2
公开(公告)日：2018-07-10
申请号：US15415333
申请日：2017-01-25
Applicant: Xerox Corporation
Inventor： Frank Ping-Hay Lee , Richard P. N. Veregin , Shigang S. Qiu , Michael J. D'Amato , Aurelian Valeriu Magdalinis , David John William Lawton
CPC classification number: G03G9/0812 , G03G9/0804 , G03G9/0808 , G03G9/081 , G03G9/0819 , G03G9/08755 , G03G9/08782 , G03G9/0904 , G03G9/0906 , G03G9/0926 , G03G9/09392
Abstract: A toner including a resin; and a colorant wax comprising a plurality of colorant wax particles comprising a colorant core surrounded by a wax shell, wherein the colorant wax particles exhibit a particle size distribution of from about 150 nanometers to less than about 300 nanometers; and wherein the colorant wax is prepared by (a) melting and mixing a dry colorant with at least one wax to form a colorant concentrate, wherein the colorant concentrate contains at least 25 percent by weight of colorant; (b) milling the colorant concentrate of step (a) to form a milled colorant concentrate; (c) combining the milled colorant concentrate of (b) with water and dispersing to form the plurality of colorant wax particles; wherein the melting and mixing of step (a) and the milling of step (b) is done in an immersion media mill; and wherein the combining of step (c) is done using a piston homogenizer.
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公开(公告)号：US20170363984A1
公开(公告)日：2017-12-21
申请号：US15187475
申请日：2016-06-20
Applicant: XEROX CORPORATION
Inventor： Richard P. N. Veregin , Valerie M. Farrugia , Frank Ping-Hay Lee , Michael J. D'Amato , Michael S. Hawkins , Edward G. Zwartz , Yulin Wang , Abdisamed Sheik-Qasim , Sandra J. Gardner
CPC classification number: G03G9/09371 , G03G9/0821 , G03G9/09321 , G03G9/09364
Abstract: A hybrid toner includes a core having at least one amorphous polyester resin and at least one crystalline polyester resin, and at least one styrene/acrylate resin, a shell comprising at least one styrene/acrylate resin, at least one wax, and optionally a pigment dispersion, the first modulated differential calorimetry scan of the hybrid toner shows at least two melting point peaks below about 80° C., and the difference between the two melting point peaks is less than or equal to about 15° C.
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Patent Agency Ranking
公开(公告)号：US20160139526A1
公开(公告)日：2016-05-19
申请号：US14541509
申请日：2014-11-14
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Guerino G. Sacripante
CPC classification number: G03G9/1133 , G03G9/0804 , G03G9/0819 , G03G9/0825 , G03G9/0827 , G03G9/0918 , G03G9/093 , G03G9/1075 , G03G9/1138 , G03G9/1139
Abstract: (Meth)acrylate resins of at least one bio-based (meth)acrylate monomer, where the monomer includes a rosin or isosorbide moiety obtained from natural sources, can be used in toner, carrier coating or both.
Abstract translation: 至少一种基于生物的（甲基）丙烯酸酯单体的（甲基）丙烯酸酯树脂，其中所述单体包括由天然来源获得的松香或异山梨醇部分，可用于调色剂，载体涂布或两者。
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公开(公告)号：US12252568B2
公开(公告)日：2025-03-18
申请号：US17493966
申请日：2021-10-05
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Kimberly D. Nosella , Raysa Rodriguez Diaz , Nan-Xing Hu , Majid Kamel , Cuong Vong
IPC: G03G9/087 , C08F212/36 , C08F220/22 , C08F220/34 , C08F230/08
Abstract: An organic polymeric particle including an optional first monomer comprising a hydrophobic monomer; a second monomer comprising two or more vinyl groups; an optional third monomer comprising an amine; and a vinyl siloxane polymerizable monomer.
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公开(公告)号：US11795333B2
公开(公告)日：2023-10-24
申请号：US17317085
申请日：2021-05-11
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Kimberly D. Nosella , Majid Kamel
IPC: C09D7/65 , C09D7/40 , C09D7/41 , C08F2/24 , C08F212/36 , C08F214/24 , C08F220/06 , C08F220/14 , C08F226/02 , C08F228/02
CPC classification number: C09D7/65 , C08F2/24 , C08F212/36 , C08F214/24 , C08F220/06 , C08F220/14 , C08F226/02 , C08F228/02 , C09D7/41 , C09D7/67 , C09D7/68
Abstract: Coating compositions are provided. In embodiments, a coating composition comprises a solvent system comprising water; a crosslinked organic additive in the form of particles and comprising a polymerization product of reactants comprising a multifunctional vinyl monomer comprising two or more vinyl groups; a binder; and optionally, one or more of a colorant and a wax. Methods of making and using the coating compositions are also provided.
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公开(公告)号：US20230100354A1
公开(公告)日：2023-03-30
申请号：US17386064
申请日：2021-07-27
Applicant: Xerox Corporation
Inventor： Karen A. Moffat , Sepehr M. Tehrani , Kimberly D. Nosella , Richard P. N. Veregin
IPC: G03G9/087 , C08F212/08
Abstract: Latexes are provided which may comprise water and resin particles comprising a polymerization product of reactants comprising a dioxane/dioxolane monomer and a vinyl co-monomer, wherein the dioxane/dioxolane monomer is an ester of (meth)acrylic acid with an alcohol comprising a dioxane moiety, an ester of (meth)acrylic acid with an alcohol comprising a dioxolane moiety, or both.
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公开(公告)号：US11086243B1
公开(公告)日：2021-08-10
申请号：US16800176
申请日：2020-02-25
Applicant: Xerox Corporation
Inventor： Jordan A. Frank , Daniel W. Asarese , Paul K. Acquaviva , Chieh-Min Cheng , Michael F. Zona , Richard P. N. Veregin
Abstract: A toner composition including a first wax; a second wax that is different from the first wax; wherein the first wax comprises a paraffin wax; wherein the second wax comprises a polymethylene wax; at least one polyester; and an optional colorant.
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