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    AERATION SUPPRESSOR FOR HIGH-SHEAR MIXER
    31.
    发明公开
    AERATION SUPPRESSOR FOR HIGH-SHEAR MIXER 审中-公开

    公开(公告)号：US20240325994A1

    公开(公告)日：2024-10-03

    申请号：US18191951

    申请日：2023-03-29

    Applicant: XEROX CORPORATION

    Inventor： Lanhui Zhang ,  Genggeng Qi ,  Brian J. Marion ,  Troy Brown ,  Yu Qi ,  Chieh-Min Cheng

    IPC: B01F23/43 ,  B01F23/40

    CPC classification number: B01F23/43 ,  B01F23/405

    Abstract: A mixer includes a shaft and an agitator coupled to the shaft. The shaft and the agitator are configured to rotate together to mix a liquid composition. The mixer also includes a sleeve positioned around the shaft. The sleeve forms a gap between the shaft and the sleeve. The sleeve is positioned in the liquid composition such that the liquid composition fills the gap up to the surface of the liquid composition in the gap to form a liquid seal between the shaft and the sleeve that minimizes an amount of air that penetrates into the liquid composition outside the gap during rotation of the shaft and the agitator.

    Toner Comprising Reactive Charge Control Agent
    34.
    发明公开
    Toner Comprising Reactive Charge Control Agent 审中-公开

    公开(公告)号：US20230296997A1

    公开(公告)日：2023-09-21

    申请号：US17697809

    申请日：2022-03-17

    Applicant: Xerox Corporation

    Inventor： Jordan A. Frank ,  Genggeng Qi ,  Chieh-Min Cheng ,  Michael F. Zona ,  Elizabeth K. Priebe

    IPC: G03G9/097

    CPC classification number: G03G9/09775 ,  G03G9/09791 ,  G03G9/093

    Abstract: An emulsion aggregation toner including a toner particle comprising at least one resin; an optional colorant; an optional wax; and a reactive charge control agent comprising at least one positive charging compound comprising a member selected from the group consisting of an amine compound having at least 3 carbon atoms, an ammonium compound having at least 3 carbon atoms, a phosphonium compound having at least 3 carbon atoms, a boronium compound having at least 3 carbon atoms, and combinations thereof; at least one reactive anchoring compound comprising a member selected the group consisting of amino, epoxy, carboxylic, hydroxyl, silanol, cyanide, anhydride, aldehyde, ketone, vinyl, and combinations thereof; and wherein the charge control agent optionally further comprises a negative charging compound comprising a member selected from the group consisting of aromatic carboxylic acid, silanol, phenol, pyranone, furanone, and combinations thereof.

    Seeded emulsion polymerization process for latexes and aqueous inkjet ink compositions made therefrom
    35.
    发明授权
    Seeded emulsion polymerization process for latexes and aqueous inkjet ink compositions made therefrom 有权

    公开(公告)号：US11643540B2

    公开(公告)日：2023-05-09

    申请号：US17329357

    申请日：2021-05-25

    Applicant: Xerox Corporation

    Inventor： Chunliang Lu ,  Valerie Kuykendall ,  Chieh-Min Cheng

    IPC: C08L25/14

    CPC classification number: C08L25/14 ,  C08L2205/03

    Abstract: Methods for forming latexes are provided. In embodiments, such a method comprises adding a first portion of a monomer emulsion comprising water, a monomer, an acidic monomer, a multifunctional monomer, and a first reactive surfactant to a reactive surfactant solution comprising water and a second reactive surfactant to form a reaction mixture, wherein the reactive surfactant solution does not comprise monomers other than the second reactive surfactant; adding a first portion of an initiator solution to the reaction mixture so that monomers undergo polymerization reactions to form resin seeds in the reaction mixture; adding a second portion of the monomer emulsion to the reaction mixture comprising the resin seeds; and adding a second portion of the initiator solution to the reaction mixture to form a latex comprising resin particles.

    Fluorescent green toners with enhanced brightness
    39.
    发明授权
    Fluorescent green toners with enhanced brightness 有权

    公开(公告)号：US11209741B2

    公开(公告)日：2021-12-28

    申请号：US16822531

    申请日：2020-03-18

    Applicant: Xerox Corporation

    Inventor： Chunliang Lu ,  Yu Qi ,  Peter V. Nguyen ,  Eliud Robles-Flores ,  Chieh-Min Cheng

    IPC: G03G9/093 ,  G03G9/09 ,  G03G9/08

    Abstract: Fluorescent green toners are provided. In embodiments, a fluorescent green toner comprises fluorescent agent-incorporated resin particles comprising a resin, a fluorescence brightener, and a yellow fluorescent agent having an absorption spectrum that overlaps with a fluorescence emission spectrum of the fluorescence brightener; and a cyan colorant; blue dye-incorporated resin particles comprising the resin and a blue dye; or both. The fluorescent green toner has a weight ratio of the yellow fluorescent agent to the cyan colorant and, if present, the blue dye, in a range of from 100:1 to 0.2:1, and the fluorescent green toner exhibits Förster Resonance Energy Transfer (FRET) under illumination with UV light. Methods of making and using the fluorescent green toners are also provided.

    FLUORESCENT WHITE TONERS AND RELATED METHODS
    40.
    发明申请
    FLUORESCENT WHITE TONERS AND RELATED METHODS 有权

    公开(公告)号：US20210294231A1

    公开(公告)日：2021-09-23

    申请号：US16822104

    申请日：2020-03-18

    Applicant: Xerox Corporation

    Inventor： Yu Qi ,  Judith Vandewinckel ,  Shigeng Li ,  Chunliang Lu ,  Chieh-Min Cheng

    IPC: G03G9/09 ,  G03G9/08 ,  G03G9/093

    Abstract: Methods of making a fluorescent white toner are provided. In embodiments, such a method comprises forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising a white colorant and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent white toner. The fluorescent white toners and methods of using such toners are also provided.

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