公开(公告)号：WO2020256699A1

公开(公告)日：2020-12-24

申请号：PCT/US2019/037645

申请日：2019-06-18

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

Inventor： ERICKSON, Kristopher J. ,  WITTKOPF, Jarrid ,  BALLAGAS, Rafael ,  GEORGE, David Wayne ,  ZHAO, Lihua ,  ALLEN, William J.

IPC: B29C64/20 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02

Abstract: In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes an additive manufacturing device to form a three-dimensional (3D) printed object. A placement device is to embed a storage element into the 3D printed object and a controller is to write data to the embedded storage element that relates to manufacturing conditions of the 3D printed object.

公开(公告)号：WO2020242451A1

公开(公告)日：2020-12-03

申请号：PCT/US2019/034121

申请日：2019-05-28

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

Inventor： ERICKSON, Kristopher J. ,  WITTKOPF, Jarrid ,  HARTMAN, Aja ,  ZHAO, Lihua

IPC: B29C64/20 ,  B29C64/393 ,  B29C64/165 ,  B33Y50/02 ,  B33Y30/00 ,  B33Y10/00

Abstract: In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes a build material distributor to deposit layers of powdered build material onto a bed to form a three-dimensional (3D) printed object. The additive manufacturing system also includes a controller to interrupt printing of the 3D printed object and to resume printing of the 3D printed object. The additive manufacturing system also includes a heat source to, during an interruption in printing, maintain a temperature of a top surface of the powdered build material between a solidification temperature and a melting temperature for the build material.

公开(公告)号：WO2020190276A1

公开(公告)日：2020-09-24

申请号：PCT/US2019/022728

申请日：2019-03-18

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

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

IPC: B22F7/08 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00

Abstract: A shaping composition for three-dimensional metal object formation can include a shaping binder and a metal shaping mixture. The metal shaping mixture can include aluminum-containing particulates, and secondary metal-containing particulates. The aluminum-containing particulates and the secondary metal-containing particulates can be thermally stable in the shaping composition up to a temperature from about 250 °C to about 500 °C, but can also be interact at a temperature from about 500 °C to about 1000°C.

公开(公告)号：WO2020190258A1

公开(公告)日：2020-09-24

申请号：PCT/US2019/022473

申请日：2019-03-15

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

Inventor： HARTMAN, Aja ,  ZHAO, Lihua ,  WOODLOCK, David ,  DOCKSTADER, Lee

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/20 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00

Abstract: In an example, a method includes operating, by a processor, on object model data. The object model data describes at least part of an object to be generated in additive manufacturing. The method also includes determining, by a processor, pattern data. The pattern data comprising areas of variable reflectance intended to be formed on a portion of the object. The method includes determining, by a processor, object generation instructions to apply a fusing agent to at least part of a layer of build material corresponding to the portion of the object in a density corresponding to the reflectance of the generated pattern data.

公开(公告)号：WO2020149834A1

公开(公告)日：2020-07-23

申请号：PCT/US2019/013650

申请日：2019-01-15

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

Inventor： ERICKSON, Kristopher ,  WITTKOPF, Jarrid ,  ZHAO, Lihua

IPC: B29C64/165 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00

Abstract: Some examples include an additive manufacturing system including a processor and a memory to store instructions. The instructions cause the processor to generate print data from received data related to a three-dimensional build object. The generated print data includes defined print data to dispensing a first agent at a build area of a build material layer, defined print data to selectively dispensing a second agent at a component receiving area within the build area of the build material layer, the second agent to locally reduce a viscosity of the build material at the component receiving area to a viscous state, and defined print data to position a component within the component receiving area at a time of the component receiving area being in a viscous state.

公开(公告)号：WO2019236058A1

公开(公告)日：2019-12-12

申请号：PCT/US2018/035966

申请日：2018-06-05

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

Inventor： OLUBUMMO, Paul ,  NAUKA, Krzysztof ,  ZHAO, Lihua ,  TOM, Howard S.

IPC: B22F3/105 ,  B33Y70/00 ,  B33Y30/00 ,  B29C64/165

Abstract: A material set can include a binder fluid and a powder bed material. The binder fluid can include an iron oxide nanoparticle, a dispersing ligand, a reducing agent, and an aqueous liquid vehicle. The powder bed material can include from 80 wt% to 100 wt% metal particles that can have a D50 particle size distribution value ranging from 5 μm to 75 μm.

公开(公告)号：WO2019013751A1

公开(公告)日：2019-01-17

申请号：PCT/US2017/041370

申请日：2017-07-10

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

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

IPC: B29C64/165 ,  B29C64/20 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

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.

公开(公告)号：WO2018143954A1

公开(公告)日：2018-08-09

申请号：PCT/US2017/015867

申请日：2017-01-31

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

Inventor： GE, Ning ,  SIMSKE, Steven J. ,  FITZHUGH, Andrew E. ,  ZHAO, Lihua

IPC: B29C35/04 ,  B29C64/20 ,  B29C64/153 ,  B29C64/307 ,  B33Y30/00 ,  B33Y40/00

CPC classification number: B29C64/165 ,  B29C64/153 ,  B29C64/20 ,  B29C64/307 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: According to an example, an apparatus may include an agent delivery device to selectively deliver an agent onto a layer of build material particles. The apparatus may also include an energy source to apply energy onto the layer of build material particles to selectively fuse the build material particles in the layer based upon the locations at which the agent was delivered and a chamber formed of a plurality of walls, in which the agent delivery device and the energy source are housed inside the chamber. The apparatus may further include a vapor source to supply vapor into the chamber to wet the build material particles inside the chamber.

公开(公告)号：WO2018080537A1

公开(公告)日：2018-05-03

申请号：PCT/US2016/059693

申请日：2016-10-31

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

Inventor： HARTMAN, Aja ,  NAUKA, Krzysztof ,  ZHAO, Lihua

IPC: B29C64/153 ,  B29C64/295

CPC classification number: B29C64/165 ,  B33Y10/00 ,  B33Y30/00

Abstract: According to an example, a three-dimensional (3D) printer may include a delivery device to deposit a light absorbing agent onto selected areas of a layer of build material particles, in which the light absorbing agent absorbs light having wavelengths that are around the ultraviolet wavelength range. The 3D printer may also include a light source to apply light onto the selectively deposited light absorbing agent and the layer of the build material particles, in which the light absorbing agent absorbs light around the ultraviolet wavelength range from the applied light and becomes heated to a temperature that causes the build material particles upon which the light absorbing agent has been deposited to melt and to fuse together following cessation of the application of the light.

Abstract translation: 根据一个实例，三维（3D）打印机可以包括递送装置以将光吸收剂沉积到构建材料颗粒层的选定区域上，其中光吸收剂吸收 具有在紫外线波长范围附近的波长的光。 3D打印机还可以包括光源，以将光施加到选择性沉积的光吸收剂和构建材料颗粒的层上，其中光吸收剂从所施加的光吸收紫外波长范围周围的光并且被加热到 导致其上沉积有光吸收剂的建造材料颗粒熔化并在停止施加光之后融合在一起的温度。

公开(公告)号：WO2018022093A1

公开(公告)日：2018-02-01

申请号：PCT/US2016/044755

申请日：2016-07-29

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

Inventor： HARTMAN, Aja ,  ZHAO, Lihua

IPC: B29C64/30 ,  G01N21/00 ,  G01N21/64 ,  B33Y40/00

Abstract: According to an example, an apparatus may include an image capture device, a controller, and a computer readable storage medium. The computer readable storage medium may include instructions that may cause the controller to receive, from the image capture device, an image of a testing agent deposited in a testing pattern onto a layer of build materials, in which the layer of build materials is to form a section of a three-dimensional printed part. The instructions may also cause the controller to determine a condition of the deposited testing pattern in the received image, wherein the determined condition is to be used to determine a quality level of the layer of build materials based upon the determined condition.

Abstract translation: 根据一个示例，一种装置可以包括图像捕获设备，控制器和计算机可读存储介质。 计算机可读存储介质可以包括指令，该指令可以使得控制器从图像捕获装置接收沉积在测试图案中的测试剂的图像到构建材料层上，其中构建材料层将形成 三维印刷部分的一部分。 指令还可以使控制器确定接收到的图像中沉积的测试图案的状况，其中所确定的状况将用于基于所确定的状况来确定构建材料层的质量水平。