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    POLYMER FILAMENTS COMPRISING AN AQUEOUS-SOLUBLE IMIDE POLYMER AND USE THEREOF AS A SACRIFICIAL PRINTING MATERIAL IN ADDITIVE MANUFACTURING
    4.
    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.

    Silver nanoparticle ink
    8.
    发明授权
    Silver nanoparticle ink 有权

    公开(公告)号：US10563079B2

    公开(公告)日：2020-02-18

    申请号：US15061618

    申请日：2016-03-04

    Applicant: Xerox Corporation

    Inventor： Pedram Salami ,  Ping Liu ,  C. Geoffrey Allen ,  Naveen Chopra ,  Kurt I. Halfyard

    IPC: C09D11/52 ,  H05K1/09 ,  C09D11/033 ,  C09D11/037 ,  H05K3/40 ,  H05K3/12

    Abstract: An ink composition including a metal nanoparticle; at least one aromatic hydrocarbon solvent, wherein the at least one aromatic hydrocarbon solvent is compatible with the metal nanoparticles; at least one aliphatic hydrocarbon solvent, wherein the at least one aliphatic hydrocarbon solvent is compatible with the metal nanoparticles; wherein the ink composition has a metal content of greater than about 45 percent by weight, based upon the total weight of the ink composition; wherein the ink composition has a viscosity of from about 5 to about 30 centipoise at a temperature of about 20 to about 30° C. A process for preparing the ink composition. A process for printing the ink composition comprising pneumatic aerosol printing.

    PRINTING PROCESS AND SYSTEM
    9.
    发明申请
    PRINTING PROCESS AND SYSTEM 审中-公开

    公开(公告)号：US20200031040A1

    公开(公告)日：2020-01-30

    申请号：US16043256

    申请日：2018-07-24

    Applicant: Xerox Corporation

    Inventor： Adela Goredema ,  Chad Smithson ,  Biby E. Abraham ,  Michelle N. Chretien ,  Naveen Chopra ,  Kurt I. Halfyard

    IPC: B29C64/112 ,  B22F9/24 ,  H05K1/09 ,  C09D11/52 ,  B22F1/00 ,  H05K3/10

    Abstract: Disclosed herein is a printing method and system for forming a three dimensional article. The method includes depositing a UV curable composition and applying UV radiation to cure the UV curable composition to form a 3D structure. The method includes depositing a conductive metal ink composition on a surface of the 3D structure and annealing the conductive metal ink composition at a temperature of less than the glass transition temperature of the UV curable composition to form a conductive trace on the 3D structure. The method includes depositing a second curable composition over the conductive trace; and curing second curable composition to form the 3D printed article having the conductive trace embedded therein.

    System for thread printing using image-based feedback
    10.
    发明授权
    System for thread printing using image-based feedback 有权

    公开(公告)号：US10525734B1

    公开(公告)日：2020-01-07

    申请号：US16177701

    申请日：2018-11-01

    Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

    Inventor： Warren Jackson ,  Naveen Chopra ,  Steven E. Ready ,  Karthik Gopalan ,  Kent Evans

    IPC: B41J3/407 ,  B41M3/14 ,  B41J11/00 ,  B41J3/44

    Abstract: A system and method for treatment of thread includes a thread printer that applies colored coatings to thread and that passes the treated thread to a fabric weaving system. A camera is positioned to capture images of the treated thread as it is woven into a fabric in the fabric weaving system. The system processes the images to determine whether the location of a selected segment of the treated thread in the fabric corresponds to an expected location in the fabric. If the actual location of the selected segment corresponds to the expected location, the system will continue instructing the thread printer to selectively apply the colored coatings to the thread according to the pattern. However, if the actual location does not correspond to the expected location, the system will modify the pattern so that thread printer adjusts the size of a segments to automatically account for the misalignment.

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