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    TEMPERATURE CONTROL IN 3D OBJECT FORMATION
    23.
    发明申请
    TEMPERATURE CONTROL IN 3D OBJECT FORMATION 有权

    公开(公告)号：US20210178658A1

    公开(公告)日：2021-06-17

    申请号：US16076369

    申请日：2017-07-10

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Aja HARTMAN ,  Adekunle OLUBUMMO ,  Kristopher J. ERICKSON ,  Lihua ZHAO ,  Howard S. TOM

    IPC: B29C64/112 ,  B29C64/165 ,  B29C64/205 ,  B29C64/393

    Abstract: A device includes a carriage movable relative to a build pad along a bi-directional travel path and supporting at least a radiation source and an applicator to selectively apply a plurality of fluid agents, including first fluid agents to affect a first material property. A timing and order of operation of the radiation source and the applicator, with the carriage, is to maintain first and second portions of a 3D object under formation within at least one selectable temperature range despite a first total volume of the first fluid agents for application onto the first portion of the 3D object being substantially greater than a second total volume of second fluid agents for application onto the second portion of the 3D object.

    THREE-DIMENSIONAL (3D) PRINTING WITH DISCOLORABLE NEAR-INFRARED ABSORBING DYE
    24.
    发明申请
    THREE-DIMENSIONAL (3D) PRINTING WITH DISCOLORABLE NEAR-INFRARED ABSORBING DYE 审中-公开

    公开(公告)号：US20190077080A1

    公开(公告)日：2019-03-14

    申请号：US16077753

    申请日：2017-02-06

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Yan ZHAO ,  Lihua ZHAO ,  Paul OLUBUMMO ,  Aja HARTMAN ,  Howard S. TOM

    IPC: B29C64/268 ,  B29C64/291 ,  B29C64/393 ,  C09D11/50

    Abstract: In an example of a three-dimensional (3D) printing method, a polymeric or polymeric composite build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The fusing agent includes a discolorable near-infrared absorbing dye, a thiol surfactant, a reducing agent, and a balance of water. Near-infrared radiation is applied to the polymeric or polymeric composite build material at a condition that maintains a temperature of the selectively applied fusing agent below a decomposition temperature of the fusing agent and that allows the discolorable near-infrared absorbing dye to harvest near-infrared radiation energy, in order to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer and to initiate discoloration of the discolorable near-infrared absorbing dye in the layer.

    SURFACE ENHANCED FLUORESCENCE SPECTROSCOPY APPARATUS
    27.
    发明申请
    SURFACE ENHANCED FLUORESCENCE SPECTROSCOPY APPARATUS 有权
    表面增强荧光光谱仪

    公开(公告)号：US20150355093A1

    公开(公告)日：2015-12-10

    申请号：US14762415

    申请日：2013-01-30

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Zhang-Lin ZHOU ,  Lihua ZHAO ,  Steven J. BARCELO ,  Zhiyong LI

    IPC: G01N21/64

    CPC classification number: G01N21/648 ,  B82Y15/00 ,  B82Y20/00 ,  B82Y40/00 ,  G01N21/6428 ,  G01N21/658 ,  G01N2021/6441

    Abstract: According to an example, methods for forming three-dimensional (3-D) nano-particle assemblies may include depositing surface-enhanced spectroscopy (SES) elements onto respective tips of nano-fingers, in which the nano-fingers are arranged in sufficiently close proximities to each other to enable the tips of groups of adjacent ones of the nano-fingers to come into sufficiently close proximities to each other to enable the SES elements on the tips to be bonded together when the nano-fingers are partially collapsed. The methods also include causing the nano-fingers to partially collapse toward adjacent ones of the nano-fingers to cause a plurality of SES elements on respective groups of the nano-fingers to be in relatively close proximities to each other and form respective clusters of SES elements, introducing additional particles that are to attach onto the clusters of SES elements, and causing the clusters of SES elements to detach from the nano-fingers.

    Abstract translation: 根据一个实例，用于形成三维（3-D）纳米颗粒组件的方法可以包括将表面增强光谱（SES）元件沉积到纳米手指的各个尖端上，其中纳米手指被布置成足够接近 使彼此相邻的纳米手指组的尖端彼此靠近，使得当纳米手指被部分塌陷时，尖端上的SES元件能够结合在一起。 所述方法还包括使纳米指部分相对于纳米手指部分地折叠，以使纳米手指的相应组上的多个SES元件彼此相对接近并形成相应的SES簇 引入附加到SES元件簇上的附加颗粒，并使SES元件簇与纳米手指分离。

    CONTROLLING COPPER-CONTAINING GREEN BODY OBJECT DEFORMATION
    29.
    发明公开
    CONTROLLING COPPER-CONTAINING GREEN BODY OBJECT DEFORMATION 审中-公开

    公开(公告)号：US20240082918A1

    公开(公告)日：2024-03-14

    申请号：US18271657

    申请日：2021-01-15

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

    Inventor： John Samuel Dilip JANGAM ,  Thomas Craig ANTHONY ,  Lihua ZHAO

    IPC: B22F10/25 ,  B22F10/30 ,  B22F10/62

    CPC classification number: B22F10/25 ,  B22F10/30 ,  B22F10/62 ,  B33Y10/00

    Abstract: A three-dimensional printing kit can include a particulate build material with from about 80 wt % to 100 wt % copper-containing build particles having a D50 particle size distribution value from about 1 μm to about 150 μm, a binding agent including a build binder to apply to particulate build material layers to form a green body object, and a shaping composition to apply to a surface of the green body object and to control green body object deformation. The shaping composition can include from about 10 wt % to about 80 wt % liquid vehicle and from about 20 wt % to about 90 wt % metal shaping particles having a D50 particle size distribution value from about 100 nm to about 100 μm. The metal shaping particles can be smaller than the copper-containing build particles.

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