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    Additive manufacturing
    4.
    发明授权
    Additive manufacturing 有权

    公开(公告)号：US11220046B2

    公开(公告)日：2022-01-11

    申请号：US16075184

    申请日：2017-04-09

    申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    发明人： Arthur H. Barnes

    IPC分类号： B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/264 ,  B29C64/314 ,  B29C64/236 ,  B29C64/218 ,  B33Y40/20 ,  B33Y40/10 ,  B29C71/02 ,  B29K77/00

    摘要： In one example, a processor readable medium having instructions thereon that when executed cause a fusing system for an additive manufacturing machine to, during a first carriage pass, preheat build material in a layer of unfused build material; during the first carriage pass and/or during a second carriage pass, dispense a liquid fusing agent on to preheated unfused build material in the layer and then, during the second carriage pass, irradiate build material in the layer on which the fusing agent has been dispensed with a fusing light; and during a third carriage pass, irradiate the fused build material with the fusing light; and during a fourth carriage pass, irradiate the fused build material with the fusing light and then actively cool the fused build material.

    THERMAL SUPPORTS FOR FORMATION OF 3D OBJECT PORTIONS
    5.
    发明申请
    THERMAL SUPPORTS FOR FORMATION OF 3D OBJECT PORTIONS 有权

    公开(公告)号：US20210354395A1

    公开(公告)日：2021-11-18

    申请号：US16607795

    申请日：2018-07-31

    申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    发明人： Arthur H. Barnes ,  Vanessa Verzwyvelt ,  Matthew A. Shepherd

    IPC分类号： B29C64/393 ,  B29C64/165 ,  B29C64/40 ,  B33Y50/02

    摘要： According to examples, an apparatus may include a processor and a memory on which is stored machine readable instructions that may cause the processor to identify a color of a portion of a 3D object to be fabricated from a 3D model and to determine, based on the identified color of the portion, a property of a thermal support, in which the property may affect a temperature of an area near build material particles used to form the portion. The instructions may cause the processor to instruct fabrication components to fabricate the thermal support having the determined property and the fabrication components to fabricate the 3D object. The thermal support may be fabricated at a location with respect to the portion to increase a temperature of a set of particles used to fabricate the portion during fabrication of the portion.

    ADDITIVE MANUFACTURING BUILD MATERIAL DOSE CONTROL
    8.
    发明申请
    ADDITIVE MANUFACTURING BUILD MATERIAL DOSE CONTROL 审中-公开

    公开(公告)号：US20200269495A1

    公开(公告)日：2020-08-27

    申请号：US16608435

    申请日：2017-11-10

    申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    发明人： Arthur H. Barnes

    IPC分类号： B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  G01F23/292

    摘要： Some examples include an additive manufacturing machine including a build chamber including a build area and a dose plate, a build material dispenser to dispense a mass of a build material onto the dose plate, a light source to transmit a light energy through the build material on the dose plate, a light sensor to sense a light energy transmitted through the build material on the dose plate, and a controller to control the build material dispenser to adjust a next build material dose mass based on a sensed light energy transmission.

    PRINTING SYSTEM WITH FORCE CONTROL MODE
    9.
    发明申请
    PRINTING SYSTEM WITH FORCE CONTROL MODE 有权
    具有强制控制模式的打印系统

    公开(公告)号：US20160144639A1

    公开(公告)日：2016-05-26

    申请号：US14807098

    申请日：2015-07-23

    申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    发明人： Luke P. Sosnowski ,  Pierre J. Kaiser ,  Alexander Toia ,  Arthur H. Barnes ,  Erich Waldherr Hacker

    IPC分类号： B41J13/00

    CPC分类号： B41J13/0009 ,  B41J13/0027

    摘要： A printing system includes a printhead to eject ink onto a print medium in a print zone. A first roller pair is adjacent to the print zone to advance a print medium into the print zone. A second roller pair upstream from the first roller pair, and driven by an independent motor, advances the print medium to the first roller pair in a position control mode. A controller causes the second roller pair to switch from the position control mode to a force control mode when a leading edge of the print medium reaches the first roller pair. The second roller pair applies a substantially constant force to the print medium in the force control mode to push the leading edge of the print medium against the first roller pair while the first roller pair is stationary.

    摘要翻译： 打印系统包括用于将墨水喷射到打印区域中的打印介质上的打印头。 第一辊对与打印区域相邻以将打印介质推进到打印区域中。 由第一辊对上游并由独立电动机驱动的第二辊对在位置控制模式下将打印介质推到第一辊对。 当打印介质的前端到达第一辊对时，控制器使第二辊对从位置控制模式切换到力控制模式。 第二辊对在力控制模式下对打印介质施加基本恒定的力，以在第一辊对静止时将打印介质的前端推靠在第一辊对上。