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    Thermal partitioning in an electrostatographic additive manufacturing system
    2.
    发明授权
    Thermal partitioning in an electrostatographic additive manufacturing system 有权

    公开(公告)号：US12036727B2

    公开(公告)日：2024-07-16

    申请号：US16562146

    申请日：2019-09-05

    Applicant: Evolve Additive Solutions, Inc.

    Inventor： Arun Chowdry ,  James W. Comb ,  Chris Counts ,  J. Samuel Batchelder

    IPC: B29C64/147 ,  B29C64/393 ,  B33Y50/02 ,  G03G15/22 ,  B33Y30/00

    CPC classification number: B29C64/147 ,  B29C64/393 ,  B33Y50/02 ,  G03G15/224 ,  B33Y30/00

    Abstract: A method for making a three-dimensional (3D) part with an electrostatographic based additive manufacturing system includes developing a first layer of a powder material using at least one electrostatographic engine, supporting the developed first layer on a transfer medium, adjusting a first layer thermal profile of the developed first layer with a first thermal flux device, adding thermal energy to a part thermal profile that includes a bonding region of previously accumulated layers of the 3D part, transfusing the developed first layer on the bonding region of the previously accumulated layers of the 3D part, and removing thermal energy from the part thermal profile. A transfusion temperature at a start of the transfusing step can be equal to or greater than a transfusion threshold temperature, where the transfusion temperature is an average of the first layer thermal profile and the part thermal profile in the bonding region.

    METHOD OF THERMALLY TRANSFERRING IMAGES IN A SELECTIVE DEPOSITION BASED ADDITIVE MANUFACTURING SYSTEM
    7.
    发明申请
    METHOD OF THERMALLY TRANSFERRING IMAGES IN A SELECTIVE DEPOSITION BASED ADDITIVE MANUFACTURING SYSTEM 审中-公开

    公开(公告)号：US20200338813A1

    公开(公告)日：2020-10-29

    申请号：US16958904

    申请日：2017-12-29

    Applicant: Evolve Additive Solutions, Inc.

    Inventor： Chris Counts ,  J. Samuel Batchelder

    IPC: B29C64/147 ,  B33Y10/00 ,  G03G15/22

    Abstract: Disclosed are selective deposition based additive manufacturing systems (10) and methods for printing a 3D part. Layers of a powder material (22) are developed using one or more electrostatography-based engines (12). The layers (22) are transferred for deposition on a part build surface. For each of the layers (22), the part build surface is heated to a temperature within a range between a flowable temperature and a thermal oxidation threshold to form a flowable part build surface, and the developed layer (22) is pressed into contact with the flowable build surface (88) to heat the developed layers (22) to a flowable state and form a new part build surface (88) which is fully consolidated. The new part build surface (88) is then cooled to remove the heat energy added during heating step before repeating the steps for the next developed layer.

    METHOD OF TRANSFUSING LAYERS IN A SELECTIVE DEPOSITION ADDITIVE MANUFACTURING SYSTEM
    8.
    发明申请
    METHOD OF TRANSFUSING LAYERS IN A SELECTIVE DEPOSITION ADDITIVE MANUFACTURING SYSTEM 审中-公开

    公开(公告)号：US20190202125A1

    公开(公告)日：2019-07-04

    申请号：US16232564

    申请日：2018-12-26

    Applicant: Evolve Additive Solutions, Inc.

    Inventor： J. Samuel Batchelder

    IPC: B29C64/295 ,  B29C64/147 ,  B33Y10/00 ,  B29C64/188 ,  G03G15/22

    CPC classification number: B29C64/295 ,  B29C64/147 ,  B29C64/188 ,  B33Y10/00 ,  G03G15/224

    Abstract: A method for printing a 3D part with a selective deposition based additive manufacturing system, includes developing layers of a powder material using at least one electrostatographic engine. The developed layers are transferred from the at least one electrostatographic engine to a transfer medium wherein the developed layers are pre-heated to a first temperature. The method includes preheating the at least a portion of the 3D part on the build platform to a second temperature higher than the first temperature. The developed layers on the transfer medium are then pressed into contact with build surfaces of a 3D part on a build platform such that heat is transferred from the build surface of the 3D part to the developed layers and the developed layers are transfused from the transfer medium to the 3D part being printed, wherein the 3D part is formed in a layer-by-layer manner.

    ADDITIVE MANUFACTURING SYSTEM AND METHOD WITH IMPROVED SURFACE FINISH
    10.
    发明申请
    ADDITIVE MANUFACTURING SYSTEM AND METHOD WITH IMPROVED SURFACE FINISH 有权

    公开(公告)号：US20220326645A1

    公开(公告)日：2022-10-13

    申请号：US17765325

    申请日：2020-09-30

    Applicant: Evolve Additive Solutions, Inc.

    Inventor： J. Samuel Batchelder ,  Manish Boorugu ,  Andrew Rice

    IPC: G03G15/22 ,  G03G15/20

    Abstract: Embodiments herein relate to 3D printing. In an embodiment, a method for printing an article using a selective toner electrophotographic process (“STEP”) includes successively depositing multiple layers of part material and support material, the layers deposited substantially parallel to a first plane; wherein: a) the multiple layers of part material and support material extend in a perpendicular to the first plane; and b) at least some of the layers of part material and support material are separated from each other to form a gap between the layers of part material and layers of support material; application of heat and pressure to the part material and support material such that a portion of the part material and support material flows into and at least partially fills the gap between the part material and support material.

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