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    SURFACE FEATURE FORMATION FOR THREE-DIMENSIONAL PRINTING
    41.
    发明申请
    SURFACE FEATURE FORMATION FOR THREE-DIMENSIONAL PRINTING 有权

    公开(公告)号：US20210046700A1

    公开(公告)日：2021-02-18

    申请号：US16978869

    申请日：2018-04-27

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

    Inventor： Kristopher J. Erickson ,  Anthony McLennan ,  Lihua Zhao

    IPC: B29C64/188 ,  B29C64/264

    Abstract: An example system includes a three-dimensional (3D) printer to generate a 3D object and a surface feature formation arrangement to receive the 3D object. The 3D object has at least one surface with a layer of at least partly uncured material. The surface feature formation arrangement includes a controller and a heat source. The controller is to operate the heat source to selectively apply heat to the at least one surface of the 3D object. The heat from the heat source is to transform the at least partly uncured material to form a selected feature on the at least one surface.

    Fusing agent including a metal bis(dithiolene) complex
    42.
    发明授权
    Fusing agent including a metal bis(dithiolene) complex 有权

    公开(公告)号：US10781228B2

    公开(公告)日：2020-09-22

    申请号：US16079361

    申请日：2017-02-06

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

    Inventor： Adekunle Olubummo ,  Lihua Zhao ,  Aja Hartman ,  Howard S. Tom ,  Kristopher J. Erickson

    IPC: C07F15/04 ,  C07C321/18 ,  B29C64/165 ,  C07F15/00 ,  B33Y70/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393

    Abstract: An example of a fusing agent includes a metal bis(dithiolene) complex, a thiol surfactant, a polar aprotic solvent, and a balance of water. In an example of a method of making the fusing agent, the metal bis(dithiolene) complex is exposed to an aqueous solution including a reducing agent and a thiol surfactant to form a reduced metal bis(dithiolene) complex and to dissolve the reduced metal bis(dithiolene) complex in the aqueous solution. The aqueous solution is incorporated into a vehicle including a water soluble organic solvent and an additive selected from the group consisting of an emulsifier, a surface tension reduction agent, a wetting agent, a scale inhibitor, an anti-deceleration agent, a chelating agent, an antimicrobial agent, and a combination thereof. The fusing agent may be utilized in a three-dimensional printing method and/or incorporated into a three-dimensional printing system.

    THREE-DIMENSIONAL (3D) PRINTING
    43.
    发明申请
    THREE-DIMENSIONAL (3D) PRINTING 审中-公开

    公开(公告)号：US20190143453A1

    公开(公告)日：2019-05-16

    申请号：US16098075

    申请日：2016-07-26

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

    Inventor： Thomas Anthony ,  Kristopher J. Erickson ,  Krzysztof Nauka

    IPC: B23K26/342 ,  B33Y70/00 ,  B23K26/06 ,  B33Y50/02 ,  B23K26/18 ,  B33Y30/00 ,  B23K26/00 ,  B23K26/0622 ,  B23K26/352 ,  B33Y10/00 ,  B23K26/14 ,  B23K26/08

    Abstract: In a three-dimensional printing method example, a metallic build material is applied. A positive masking agent is selectively applied on at least a portion of the metallic build material. The positive masking agent includes a radiation absorption amplifier that is compatible with the metallic build material. The metallic build material is exposed to radiation from a spatially broad, high energy light source to melt the portion of the metallic build material in contact with the positive masking agent to form a layer. The radiation absorption amplifier i) has an absorbance for the radiation that is higher than an absorbance for the radiation of the metallic build material, or ii) modifies a surface topography of the at least the portion of the metallic build material to reduce specular reflection of the radiation off of the at least the portion of the metallic build material, or both i) and ii).

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