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    PIGMENTED POLYMER PARTICLES AND METHODS OF PRODUCTION AND USES THEREOF
    21.
    发明申请
    PIGMENTED POLYMER PARTICLES AND METHODS OF PRODUCTION AND USES THEREOF 有权

    公开(公告)号：US20220162446A1

    公开(公告)日：2022-05-26

    申请号：US17104275

    申请日：2020-11-25

    Applicant: Xerox Corporation

    Inventor： Shivanthi Easwari Sriskandha ,  Valerie M. Farrugia ,  Richard Philip Nelson Veregin

    IPC: C08L83/04 ,  C09D183/04

    Abstract: Pigmented polymer particles may comprise a thermoplastic polymer and a pigment, wherein at least some of the pigmented polymer particles have a morphology according to (a), (b), (c), or any combination thereof: (a) the pigment having a coating comprising the thermoplastic polymer and the coated pigment adhered to a thermoplastic polymer particle, (b) the pigment being embedded in an outer surface of the thermoplastic polymer particle, and (c) the pigment being encapsulated by the thermoplastic polymer particle. The pigmented polymer particles, especially the highly spherical pigmented polymer particles, may be useful, among other things, as starting material for additive manufacturing. For example, a method may comprise: depositing, upon a surface, the foregoing pigmented polymer particles optionally in combination with other thermoplastic polymer particles; and once deposited, heating at least a portion of the particles to promote consolidation thereof and form a consolidated body.

    TONER COMPOSITIONS AND ADDITIVES
    22.
    发明申请
    TONER COMPOSITIONS AND ADDITIVES 有权

    公开(公告)号：US20220137526A1

    公开(公告)日：2022-05-05

    申请号：US17086516

    申请日：2020-11-02

    Applicant: Xerox Corporation

    Inventor： Richard Philip Nelson Veregin ,  Kimberly D. Nosella ,  Raysa Rodriguez Diaz ,  Melanie Lynn Davis ,  Cuong Vong

    IPC: G03G9/097 ,  G03G9/08 ,  C08F220/24

    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.

    POLYMER FILAMENTS COMPRISING AN AQUEOUS-SOLUBLE IMIDE POLYMER AND USE THEREOF AS A SACRIFICIAL PRINTING MATERIAL IN ADDITIVE MANUFACTURING
    24.
    发明申请
    POLYMER FILAMENTS COMPRISING AN AQUEOUS-SOLUBLE IMIDE POLYMER AND USE THEREOF AS A SACRIFICIAL PRINTING MATERIAL IN ADDITIVE MANUFACTURING 有权

    公开(公告)号：US20220064462A1

    公开(公告)日：2022-03-03

    申请号：US17004861

    申请日：2020-08-27

    Applicant: Xerox Corporation

    Inventor： Kimberly D. Nosella ,  Richard Philip Nelson Veregin ,  Naveen Chopra

    IPC: C09D11/102 ,  C09D11/54 ,  B33Y70/00 ,  B29C64/118 ,  B33Y10/00 ,  B29C64/40

    Abstract: When making parts by additive manufacturing, particularly by fused filament fabrication, it is sometimes necessary to include a removable support during part fabrication due to the shape of the part. An overhang, for instance, may be fabricated using a support structure, which is subsequently eliminated following polymer matrix consolidation. Elimination of a removable support following part fabrication may be problematic in some instances. Polymer filaments suitable for forming removable supports during additive manufacturing may comprise at least one imide polymer having at least partial solubility in aqueous fluids. Imide polymers may include, for example, polyimides and polyesterimides. Additive manufacturing processes may comprise forming a supported part by depositing a build material and a removable support comprising an imide polymer, wherein at least a portion of the build material is deposited upon the removable support. An unsupported part may be formed following exposure of the supported part to an aqueous fluid.

    Cold pressure fix toner comprising crystalline resin and high and low Tg amorphous polyester
    25.
    发明授权
    Cold pressure fix toner comprising crystalline resin and high and low Tg amorphous polyester 有权

    公开(公告)号：US10048605B1

    公开(公告)日：2018-08-14

    申请号：US15414083

    申请日：2017-01-24

    Applicant: XEROX CORPORATION

    Inventor： Guerino G. Sacripante ,  Yulin Wang ,  Nan-Xing Hu ,  Sandra J. Gardner ,  Richard Philip Nelson Veregin

    IPC: G03G9/087

    Abstract: Cold pressure fix toner compositions include at least one crystalline polyester having a melting point in a range from about 30° C. to about 130° C., a rosin acid-based polyester resin and an amorphous polyester having a Tg higher than the rosin acid-based polyester. The crystalline polyester can have a melting point in a range from about 30° C. to about 130° C., the rosin acid-based polyester resin can have a Tg in a range from about 0° C. to about −45° C. and an amorphous polyester having a Tg in a range from about 40° C. to about 70° C. The temperature difference between the rosin acid-based polyester resin and the amorphous polyester resin can be in a range from about 30° C. to about 110° C.

    COLD PRESSURE FIX TONER COMPOSITIONS BASED ON CRYSTALLINE POLYESTER AND AMORPHOUS ORGANIC COMPOUND MIXTURES
    26.
    发明申请
    COLD PRESSURE FIX TONER COMPOSITIONS BASED ON CRYSTALLINE POLYESTER AND AMORPHOUS ORGANIC COMPOUND MIXTURES 有权
    基于晶体聚合物和非晶有机复合混合物的冷压固化剂组合物

    公开(公告)号：US20170017173A1

    公开(公告)日：2017-01-19

    申请号：US14802932

    申请日：2015-07-17

    Applicant: XEROX CORPORATION

    Inventor： Richard Philip Nelson Veregin ,  Kentaro Morimitsu ,  Guerino G. Sacripante ,  Ke Zhou ,  Nan-Xing Hu

    IPC: G03G9/087 ,  G03G13/20

    CPC classification number: G03G9/08755 ,  G03G9/0821 ,  G03G9/08775 ,  G03G9/08797 ,  G03G13/20

    Abstract: A cold pressure fix toner composition includes at least one crystalline polyester material having a melting point in a range from about 30° C. to about 130° C. and at least one C16 to C80 amorphous organic material having a Tg of from about −30° C. to about 70° C. A method of cold pressure fix toner application includes providing the cold pressure fix toner composition, disposing the cold pressure fix toner composition on a substrate, and applying pressure to the disposed composition on the substrate under cold pressure fixing conditions. A latex can be formed from the cold pressure fix toner composition.

    Abstract translation: 冷压固定调色剂组合物包括至少一种具有约30℃至约130℃的熔点的至少一种结晶聚酯材料和至少一种Tg为约-30℃的C16至C80无定形有机材料 冷压固定调色剂应用的方法包括提供冷压定影调色剂组合物，将冷压定影调色剂组合物设置在基材上，并在冷压力下向基材上的所配置的组合物施加压力 修理条件。 可以由冷压定影调色剂组合物形成胶乳。

    SILICON CARBIDE TONER ADDITIVE
    27.
    发明申请
    SILICON CARBIDE TONER ADDITIVE 审中-公开
    硅碳粉补充剂

    公开(公告)号：US20150024315A1

    公开(公告)日：2015-01-22

    申请号：US13946966

    申请日：2013-07-19

    Applicant: XEROX CORPORATION

    Inventor： Thomas Edward Enright ,  Thomas R. Pickering ,  Richard A. Klenkler ,  Richard Philip Nelson Veregin

    IPC: G03G9/08

    CPC classification number: G03G9/0804 ,  G03G9/09708 ,  G03G9/09725

    Abstract: A toner composition includes toner particles and an additive disposed on exterior surfaces of the toner particles, the additive includes uncoated silicon carbide particles, the toner composition is substantially free of one or more rare earth compound and the uncoated silicon carbide particles are present in a sufficient amount to reduce bias charge roller contamination.

    Abstract translation: 调色剂组合物包括调色剂颗粒和设置在调色剂颗粒的外表面上的添加剂，添加剂包括未涂覆的碳化硅颗粒，调色剂组合物基本上不含一种或多种稀土化合物，并且未涂覆的碳化硅颗粒以足够的 大大减少了偏压电荷辊污染。

    TONER COMPOSITIONS AND ADDITIVES
    29.
    发明申请
    TONER COMPOSITIONS AND ADDITIVES 有权

    公开(公告)号：US20230097294A1

    公开(公告)日：2023-03-30

    申请号：US17476933

    申请日：2021-09-16

    Applicant: Xerox Corporation

    Inventor： Richard Philip Nelson Veregin ,  Kimberly D. Nosella ,  Raysa Rodriguez Diaz ,  Melanie Lynn Davis ,  Cuong Vong

    IPC: G03G9/087 ,  G03G9/08 ,  G03G9/097

    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.

    THERMOPLASTIC PARTICULATES COMPRISING A CARBOXYLIC ACID-BASED SINTERING AID AND ADDITIVE MANUFACTURING THEREWITH
    30.
    发明申请
    THERMOPLASTIC PARTICULATES COMPRISING A CARBOXYLIC ACID-BASED SINTERING AID AND ADDITIVE MANUFACTURING THEREWITH 有权

    公开(公告)号：US20220118693A1

    公开(公告)日：2022-04-21

    申请号：US17071255

    申请日：2020-10-15

    Applicant: Xerox Corporation

    Inventor： Robert Claridge ,  Cristina Resetco ,  Richard Philip Nelson Veregin

    IPC: B29C64/153 ,  B33Y10/00 ,  B33Y80/00 ,  B29B9/12 ,  B29C64/314

    Abstract: Additive manufacturing processes featuring consolidation of thermoplastic particulates may form printed objects in a range of shapes. Nanoparticles disposed upon the outer surface of the thermoplastic particulates may improve flow performance of the thermoplastic particulates during additive manufacturing, but may lead to excessive porosity following consolidation. Excessive porosity may be detrimental for performance applications requiring high mechanical strength. A carboxylic acid-based sintering aid, particularly a metal carboxylate, may decrease porosity of consolidated parts following sintering without substantially increasing blocking in a powder bed. Particulate compositions suitable for additive manufacturing may comprise: a plurality of thermoplastic particulates comprising a carboxylic acid-based sintering aid admixed with a thermoplastic polymer, and a plurality of nanoparticles disposed upon an outer surface of the thermoplastic particulates.

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