公开(公告)号：WO2022119555A1

公开(公告)日：2022-06-09

申请号：PCT/US2020/062668

申请日：2020-12-01

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

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

IPC: B22F3/105 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y40/00

Abstract: A shaping composition for controlling deformation of a green body object can include from about 10 wt% to about 80 wt% liquid vehicle, and from about 10 wt% to about 90 wt% metal particulates. The metal particulates can include from about 35 wt% to about 90 wt% high melting point metal particles, from about 10 wt% to about 65 wt% aluminum alloy particles, and from about 0.1 wt% to about 10 wt% metal complex selected from an inorganic metal salt, an organic metal salt, or a metal oxide. The metal of the metal complex can include copper, iron, aluminum, chromium, titanium, cobalt, silver, gold, nickel, tin, or zinc.

公开(公告)号：WO2022060344A1

公开(公告)日：2022-03-24

申请号：PCT/US2020/050824

申请日：2020-09-15

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

Inventor： OLUBUMMO, Adekunle ,  ZHAO, Lihua ,  HERSCHKE, Laurent

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/10 ,  C08F290/04

Abstract: A particulate build material for three-dimensional printing can include from about 80 wt% to 100 wt% polymer particles having an average particle size from about 10 µm to about 125 µm. The polymer particles can have a polyolefin polymer backbone with from about 90 mol% to 100 mol% polypropylene polymeric units and from 0 mol% to about 10 mol% polyethylene polymeric units. The polymer particles can further include a crosslinkable component in the form of a maleic anhydride-containing side chain appended to the polyolefin polymer backbone, a thiol-containing side chain appended to the polyolefin polymer backbone, a glycidyl polyhedral oligomeric silsesquioxane compounded with the polyolefin polymer backbone, or a combination thereof.

公开(公告)号：WO2021174230A1

公开(公告)日：2021-09-02

申请号：PCT/US2021/022359

申请日：2021-03-15

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

Inventor： OLUBUMMO, Adekunle ,  ZHAO, Lihua ,  HARTMAN, Aja ,  BRECZEWSKA JAWORSKA, Agnieszka Maria ,  BLANCHOT, Olivier Maurice Marcel ,  ROUGEAUX, Isabelle Santarella ,  PILUSO, Pierre Nicolas Roger ,  DELMAS, Jerome

IPC: B29C64/165 ,  B29C64/379 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/10

Abstract: The present disclosure relates to a method of manufacturing a 3D printed object. The method comprises selectively applying a fusing agent onto powder bed material; and exposing at least part of the powder bed material to radiation to fuse at least part of the powder bed material to form a layer of the 3D printed object. The fusing agent and/or a detailing agent is selectively applied to the powder bed material in a predetermined arrangement to form a porous region in the 3D printed object. The 3D printed object is then treated with a modifying agent, such that the modifying agent at least partially penetrates the porous region of the 3D printed object.

公开(公告)号：WO2020256696A1

公开(公告)日：2020-12-24

申请号：PCT/US2019/037635

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: B29C64/386 ,  B29C64/393 ,  B33Y50/00 ,  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 of the additive manufacturing system is to embed a sensing system into build material used to form the 3D printed object. The sensing system is to measure a manufacturing condition during formation of the 3D printed object. The additive manufacturing system also includes a controller to associate manufacturing condition with the 3D printed object.

公开(公告)号：WO2020060572A1

公开(公告)日：2020-03-26

申请号：PCT/US2018/052327

申请日：2018-09-22

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

Inventor： OLUBUMMO, Adekunle ,  ZHAO, Lihua ,  HARTMAN, Aja

IPC: B33Y70/00 ,  B29C64/194 ,  B29C64/165 ,  B29C64/106 ,  B29C64/124 ,  C08L77/00 ,  C08L63/00 ,  C08L63/02 ,  C08K5/17

Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition, an epoxy agent to be applied to at least a portion of the build material composition during 3D printing, and a fusing agent to be applied to the at least the portion of the build material composition during 3D printing. The build material composition includes a polyamide having an amino functional group. The epoxy agent includes an epoxy having an epoxide functional group to react with the amino functional group of the polyamide in the at least the portion. The fusing agent includes an energy absorber.

公开(公告)号：WO2020046267A1

公开(公告)日：2020-03-05

申请号：PCT/US2018/048164

申请日：2018-08-27

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

Inventor： ERICKSON, Kristopher J. ,  ZHAO, Lihua ,  SALFITY, Jonathan

IPC: B29C64/20 ,  B33Y30/00

Abstract: In some examples, an interaction module of a three-dimensional (3D) printer can include an interaction sub-module including a coupler, where the coupler is to connect to a tool, a first actuator to move the coupler in a first direction, and a second actuator to move the coupler in a second direction, and an analytics system to analyze the coupler and the tool during an interaction with a 3D object of the 3D printer, where the tool of the coupler is to interact with the 3D object of the 3D printer during a 3D print job.

公开(公告)号：WO2020027811A1

公开(公告)日：2020-02-06

申请号：PCT/US2018/044653

申请日：2018-07-31

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

Inventor： CHANG, Seongsik ,  NAUKA, Krzysztof ,  DE PENA, Alejandro Manuel ,  ZHAO, Lihua

IPC: B29C64/273 ,  B29C64/277 ,  B29C64/295 ,  B33Y30/00

Abstract: According to examples, an apparatus may include an array of micro-mirrors, each of the micro-mirrors being individually controllable to selectively be in a first position or a second position, and a light source to direct a pulse of light onto the array of micro-mirrors with sufficient intensity to cause micron-sized particles on a powder bed upon which the light is directed from the array of micro-mirrors to at least partially melt. Each of the micro-mirrors that is in the first position may reflect light onto a respective area on a layer of micron-sized particles to at least partially melt the micron-sized particles in the respective area and each of the micro-mirrors that is in the second position may reflect light away from the powder bed on which the micron-sized particles are supported.

公开(公告)号：WO2018194542A1

公开(公告)日：2018-10-25

申请号：PCT/US2017/027881

申请日：2017-04-17

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

Inventor： OLUBUMMO, Adekunle ,  HARTMAN, Aja ,  ZHAO, Lihua

IPC: B29C64/165 ,  B33Y70/00 ,  C07F15/00 ,  C07C321/20 ,  C07C321/18

Abstract: Fusing agent(s) are described herein. In an example, a fusing agent can comprise a metal bis(dithiolene) complex, at least one electron donor compound, a polar aprotic solvent, and water. In some examples, the at least one electron donor compound can comprise at least one hindered amine light stabilizer compound. In some examples, the polar aprotic solvent can be selected from the group consisting of 1-methyl-2-pyrrolidone, 2-pyrrolidone, 1-(2-hydroxyethyl)-2-pyrrolidone, dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and a combination thereof.

公开(公告)号：WO2018144031A1

公开(公告)日：2018-08-09

申请号：PCT/US2017/016674

申请日：2017-02-06

Applicant: HEWLETT PACKARD DEVELOPMENT COMPANY, L.P.

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

IPC: B29C64/153 ,  B29C64/393 ,  B29C64/141 ,  B29C64/264 ,  C09D11/32 ,  B33Y30/00 ,  B41J2/01 ,  B33Y10/00

CPC classification number: C09D11/54 ,  B29C64/112 ,  B29C64/165 ,  B29C64/20 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/101 ,  C09D11/102 ,  C09D11/30 ,  C09D11/328 ,  C09D11/38

Abstract: An example of a fusing agent includes a tetraphenyldiamine-based dye, alkyldiphenyloxide disulfonate, 1-methyl-2-pyrrolidone, and a balance of water. The fusing agent excludes a strong reducing species. The fusing agent may be incorporated into a three-dimensional printing method or a three-dimensional printing system. In an example of the three-dimensional printing method, a polymeric or polymeric composite build material is applied. The fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The polymeric or polymeric composite build material is exposed to electromagnetic radiation to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer.

公开(公告)号：WO2018136048A1

公开(公告)日：2018-07-26

申请号：PCT/US2017/013914

申请日：2017-01-18

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

Inventor： HARTMAN, Aja ,  ZHAO, Lihua

IPC: B29C64/205 ,  B29C64/393 ,  B29C64/165 ,  B33Y40/00 ,  B33Y10/00 ,  B29C64/10

Abstract: In one example, an additive manufacturing process includes: making an object slice by slice, including dispensing a first quantity of each of multiple liquid functional agents on to a layer of fusable build material and then irradiating the layer of build material; while making the object, identifying a deviant region in a slice; and dispensing a second quantity different from the first quantity of at least one of the functional agents into a location corresponding to the deviant region.