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    Three-dimensional (3D) printing
    4.
    发明授权
    Three-dimensional (3D) printing 有权

    公开(公告)号：US11007710B2

    公开(公告)日：2021-05-18

    申请号：US15568969

    申请日：2015-07-24

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： James Elmer Abbott, Jr. ,  Raymond Adamic ,  David A. Champion

    IPC: B29C64/135 ,  B33Y70/00 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/165 ,  C09D11/322 ,  G03G15/22 ,  B22F10/10 ,  B29C64/112

    Abstract: In a 3D printing method, a first layer of a build material is applied. A part layer is patterned by selectively applying a penetrating liquid functional material (PLFM) on at least a portion of the first layer. The PLFM includes (in amounts by weight based on total wt % of the PLFM): from about 5%-15% of a first metal oxide nanoparticle having a particle size ranging from about 0.5 nm up to 10 nm, from about 0.25%-10% of a second metal oxide nanoparticle having at least one dimension greater than 10 nm, from about 1%-10% of an electromagnetic radiation absorber, from about 5%-50% of an organic solvent, a surfactant, and a balance of water. The first layer having the PLFM applied thereon is exposed to electromagnetic radiation, whereby the portion of the first layer at least partially fuses to form the part layer.

    ADJUSTMENTS TO FORMING DATA FOR FORMING A BUILD LAYER
    9.
    发明申请
    ADJUSTMENTS TO FORMING DATA FOR FORMING A BUILD LAYER 有权

    公开(公告)号：US20220134673A1

    公开(公告)日：2022-05-05

    申请号：US17417745

    申请日：2019-07-07

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Daniel Mosher ,  Jennifer Wu ,  Vladek Kasperchik ,  David A. Champion

    IPC: B29C64/393 ,  B33Y50/02 ,  G05B19/4099

    Abstract: According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to determine physical characteristics of a build layer of build material particles. The instructions may also cause the processor to determine an adjustment to forming data based on the determined physical characteristics, the forming data to be used informing a subsequent build layer. The instructions may further cause the processor to apply the determined adjustment to the forming data for use in forming the subsequent build layer, in which portions of a three-dimensional (3D) object are to be formed in the build layer and the subsequent build layer.

    SURFACE HEIGHT MEASUREMENT SYSTEM
    10.
    发明申请
    SURFACE HEIGHT MEASUREMENT SYSTEM 审中-公开

    公开(公告)号：US20200232785A1

    公开(公告)日：2020-07-23

    申请号：US16486469

    申请日：2017-04-01

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. ,  OREGON STATE UNIVERSITY

    Inventor： Dan Mosher ,  Brian Bay ,  David A. Champion ,  James McKinnell

    IPC: G01B11/06 ,  B29C64/393 ,  G06K9/00

    Abstract: A first camera and a second camera oriented at different angles and spaced a separation distance to determine surface height measurements. The cameras are focused at a lens focal length to a surface area to record a captured image pair of x-y pixels having common features of the surface area. Correlation of the captured image pair is performed to measure a set of disparity distances between the common features in the captured image pair using a fiducial to assist. The set of disparity distances is converted to a set of z-height measurements with a resolution incorporating the separation distance, the lens focal length, the set of disparity distances, and a calibration error factor.

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