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公开(公告)号：US20200238625A1
公开(公告)日：2020-07-30
申请号：US16608382
申请日：2017-10-16
Inventor： David A Champion , Daniel Mosher , Brian Bay
IPC: B29C64/393 , B33Y50/02 , B33Y30/00
Abstract: An example method includes forming a layer of build material on a build platform of a 3-D printer and correlating X-Y position data and stereoscopic Z-position data for particles of the build material in the layer of build material that are determined to exceed a threshold criteria based on a measure attribute.
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Patent Agency Ranking
公开(公告)号：US20210331243A1
公开(公告)日：2021-10-28
申请号：US16490922
申请日：2018-02-28
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Mohammed S Shaarawi , James McKinnell , David A Champion , Vladek Kasperchik
Abstract: In an example of a method for three-dimensional (3D) printing, build material layers are patterned to form an intermediate structure. During patterning, a binding agent is selectively applied to define: a build material support structure and a patterned intermediate part. Also during patterning, i) the binding agent and a separate agent including a gas precursor or ii) a combined agent including a binder and the gas precursor are selectively applied to define a patterned breakable connection between at least a portion of the build material support structure and at least a portion patterned intermediate part. The intermediate structure is heated to a temperature that activates the gas precursor to create gas pockets in the patterned breakable connection.
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公开(公告)号：US20210001401A1
公开(公告)日：2021-01-07
申请号：US16605131
申请日：2018-03-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Mohammed S Shaarawi , James McKinnell , Vladek Kasperchik , David A Champion
Abstract: In an example of a method for three-dimensional (3D) printing, build material layers are patterned to form an intermediate structure. During patterning, a binding agent is selectively applied to define a patterned intermediate part. Also during patterning, i) the binding agent and a separate agent including a gas precursor are, or ii) a combined agent including a binder and the gas precursor is, selectively applied to define a build material support structure adjacent to at least a portion of the patterned intermediate part. The intermediate structure is heated to a temperature that activates the gas precursor to create gas pockets in the build material support structure.
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公开(公告)号：US11072088B2
公开(公告)日：2021-07-27
申请号：US15765088
申请日：2016-01-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Michael G Monroe , Vladek Kasperchik , Pavel Kornilovich , David A Champion
Abstract: According to an example, a three-dimensional (3D) printer may include a spreader to spread build material granules into a layer on a build area platform, a pressing die positioned above the layer of spread build material granules, in which the pressing die is to apply pressure onto the layer of build material granules to fragment the build material granules into primary particles to increase the density of the layer of build material granules, and a printhead to selectively deposit a fusing agent between the primary particles of the spread layer of build material granules.
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公开(公告)号：US11498130B2
公开(公告)日：2022-11-15
申请号：US16605131
申请日：2018-03-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Mohammed S Shaarawi , James McKinnell , Vladek Kasperchik , David A Champion
IPC: B22F10/00 , B22F3/10 , B22F5/00 , B33Y30/00 , B33Y50/02 , B29C64/393 , B29C64/165 , B33Y70/10 , B22F10/14 , B22F10/85 , B22F10/64 , B33Y80/00 , B22F10/68 , B22F10/32 , B22F10/47 , B33Y40/00 , C09D11/033 , C09D11/38 , B22F1/05 , B33Y10/00 , B33Y70/00 , B33Y40/20 , B29K505/00
Abstract: In an example of a method for three-dimensional (3D) printing, build material layers are patterned to form an intermediate structure. During patterning, a binding agent is selectively applied to define a patterned intermediate part. Also during patterning, i) the binding agent and a separate agent including a gas precursor are, or ii) a combined agent including a binder and the gas precursor is, selectively applied to define a build material support structure adjacent to at least a portion of the patterned intermediate part. The intermediate structure is heated to a temperature that activates the gas precursor to create gas pockets in the build material support structure.
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公开(公告)号：US20180265417A1
公开(公告)日：2018-09-20
申请号：US15542624
申请日：2015-01-23
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： David A Champion , James Elmer Abbott, JR.
IPC: C04B35/626 , C04B35/505 , C04B35/111 , C04B35/565 , C04B35/628 , H05B6/64
CPC classification number: C04B35/62655 , B28B1/001 , B29C64/165 , B33Y70/00 , C04B35/01 , C04B35/111 , C04B35/117 , C04B35/14 , C04B35/443 , C04B35/45 , C04B35/457 , C04B35/46 , C04B35/468 , C04B35/486 , C04B35/488 , C04B35/495 , C04B35/505 , C04B35/553 , C04B35/565 , C04B35/583 , C04B35/584 , C04B35/62813 , C04B35/62815 , C04B35/62839 , C04B2235/3208 , C04B2235/3239 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3287 , C04B2235/3291 , C04B2235/36 , C04B2235/424 , C04B2235/6026 , C04B2235/667 , C04B2235/80 , H05B6/64
Abstract: A 3D printing system includes a build material and an ink for patterning portions of the build material. The printing system further includes two or more susceptors, a first susceptor and a second susceptor. The first susceptor causes heating when exposed to microwave radiation at a first temperature. The second susceptor causes heating when exposed to microwave radiation at a second temperature. The first susceptor material is decomposable or oxidizable at a third temperature that is higher than the second temperature. The second susceptor is transparent to microwave radiation at the first temperature.
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