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公开(公告)号：WO2021118555A1
公开(公告)日：2021-06-17
申请号：PCT/US2019/065676
申请日：2019-12-11
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： HARTMAN, Aja , JANGAM, John Samuel Dilip , HUANG, Wei , ANTHONY, Thomas Craig , DISPOTO, Gary J. , ZHAO, Lihua
IPC: B29C64/165 , B29C64/129 , B33Y10/00
Abstract: The present disclosure relates to a three-dimensional printing kit comprising: a powder bed material comprising polymer particles; a fusing agent comprising a radiation absorber and a liquid carrier; and a magnetic marking agent comprising magnetic nanoparticles, a humectant and a liquid carrier, wherein the concentration of magnetic nanoparticles is 5 to 70 weight % based on the total weight of the magnetic agent. The present disclosure also relates to a method of three-dimensional (3D) printing a 3D printed object. The method comprises: selectively applying a magnetic marking agent onto powder bed material, wherein the powder bed material comprises polymer particles, and wherein the magnetic marking agent comprises magnetic nanoparticles and a liquid carrier; selectively fusing the powder bed material, such that the magnetic nanoparticles are incorporated in the 3D printed object in a predetermined arrangement that forms a detectable marker in the 3D printed object.
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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
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.
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公开(公告)号：WO2020190334A1
公开(公告)日：2020-09-24
申请号：PCT/US2019/055501
申请日：2019-10-10
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： HARTMAN, Aja , HUANG, Wei , WYCOFF, Kyle , OLUBUMMO, Adekunle , JANGAM, John Samuel Dilip
IPC: B29C64/165 , C08K5/17 , C08K5/1515 , B33Y70/00 , B33Y80/00 , B33Y10/00
Abstract: The present disclosure relates to a three-dimensional (3D) printing materials kit comprising: a first tailoring agent comprising at least one crosslinking agent; a second tailoring agent comprising at least one plasticizer, and a fusing agent. The present disclosure also relates to a printed structure comprising regions of relatively higher ductility and regions of relatively lower ductility. The regions of relatively higher ductility can be interspersed by the regions of relatively lower ductility, and the regions of relatively lower ductility can be formed from a crosslinked polymer and/or a polymer composition comprising a reinforcing filler, and/or the regions of relatively higher ductility can be formed from a polymer composition comprising a plasticizer. The present disclosure also relates to a method of three dimensional printing (3D) that can be used to print a 3D printed object comprising the printed structure described above.
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公开(公告)号：WO2019236108A1
公开(公告)日：2019-12-12
申请号：PCT/US2018/036753
申请日：2018-06-08
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： NAUKA, Krzysztof , JANGAM, John Samuel Dilip , CHANG, Seongsik
IPC: B33Y30/00 , B23K26/03 , B33Y40/00 , B23K26/144 , B23K26/70
Abstract: An in-situ monitoring device for selective laser melting (SLM) additive manufacturing may include at least one coherent electromagnetic wave source to produce a detection beam, an interferometer interposed between the electromagnetic wave source and a target detection area, a photodetector to detect displacement measuring interference between electromagnetic waves from the electromagnetic wave source and reflected electromagnetic waves from the target detection area through the interferometer, and control logic to cause the detection beam to follow a print path of a material forming laser at a distance behind the material forming laser. The detection beam is placed on a laser-melted and at least partially solidified portion of a layer of a three-dimensional (3D) object formed by the material forming laser.
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公开(公告)号：WO2019231467A1
公开(公告)日：2019-12-05
申请号：PCT/US2018/035654
申请日：2018-06-01
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： NAUKA, Krzysztof , JANGAM, John Samuel Dilip , ERICKSON, Kristopher J.
Abstract: The present disclosure is drawn to a material set including a powder bed material and a binder fluid. The powder bed material can be from 80 wt% to 100 wt% metal particles having a metal core and a thin metal layer on the core, and the metal particles having a D50 particle size distribution value ranging from 4 μm to 150 μm and the thin metal layer having an average thickness from 20 nm to 2 µm. The binder fluid can adhere a first portion of the powder bed material relative to a second portion of the powder bed material not in contact with the binder fluid.
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Patent Agency Ranking
公开(公告)号：WO2022154805A1
公开(公告)日：2022-07-21
申请号：PCT/US2021/013686
申请日：2021-01-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： JANGAM, John Samuel Dilip , ANTHONY, Thomas , ZHAO, Lihua
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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公开(公告)号：WO2021154199A1
公开(公告)日：2021-08-05
申请号：PCT/US2019/061783
申请日：2020-01-29
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
IPC: B29C64/165 , H01F1/28 , B33Y10/00
Abstract: The present disclosure relates to a method of three-dimensional (3D) printing a 3D printed object. The method comprises: selectively jetting a marking agent onto a first region of build material, wherein the build material comprises at least one metal and/or ceramic; selectively jetting a binding agent onto at least a portion of the build material; and binding the build material to form a layer; such that the marking agent is incorporated in the metal part in a predetermined arrangement that forms a detectable marker in the 3D printed object. The disclosure also relates to a multi-fluid inkjet kit for 3D printing.
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公开(公告)号：WO2021091572A1
公开(公告)日：2021-05-14
申请号：PCT/US2019/060517
申请日：2019-11-08
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： PON, Ben , JANGAM, John Samuel Dilip , WYCOFF, Kyle , ZHAO, Lihua
IPC: B29C64/124 , B22F3/10 , B22F7/04 , B33Y10/00 , B33Y70/00
Abstract: A three-dimensional printing kit can include a particulate build material, a binding agent, and a supportive coating agent. The particulate build material can include from about 80 wt% to about 100 wt% metal particles based on the total weight of the particulate build material. The binding agent can include binder particles dispersed in a binder liquid vehicle. The supportive coating agent can include ceramic particles having a negative coefficient of thermal expansion, a gelling compound, and a supportive coating liquid vehicle.
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公开(公告)号：WO2020046268A1
公开(公告)日：2020-03-05
申请号：PCT/US2018/048166
申请日：2018-08-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: Examples of binder agents for a three-dimensional (3D) printing process are disclosed. In an example, the binder agent includes copper nanoparticles and a liquid vehicle. In this example, the liquid vehicle includes an antioxidant, polyethylene glycol hexadecyl ether, and a balance of water. Another example of the binder agent includes stainless steel nanoparticles and a liquid vehicle. In this example, the liquid vehicle includes polyethylene glycol hexadecyl ether, and a balance of water. Still another example of the binder agent includes nickel nanoparticles and a liquid vehicle. The liquid vehicle includes an antioxidant; a symmetric triblock copolymer including poly(ethylene oxide) and poly(propylene oxide), and a balance of water.
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公开(公告)号：WO2023080888A1
公开(公告)日：2023-05-11
申请号：PCT/US2021/057709
申请日：2021-11-02
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： HARTMAN, Aja , JANGAM, John Samuel Dilip , PON, Ben , GALATI, Elizabeth
IPC: B29C64/379 , B29C71/00 , B33Y40/20 , B33Y80/00
Abstract: In one example in accordance with the present disclosure, a post processing system is described. The post processing system includes a cooling system to cool the polymer object and a heating device to raise the temperature of the polymer object. The post processing system also includes a controller. The controller determines parameters for heating and cooling. The controller also controls operation of the cooling system to pre-cool the polymer object and controls operation of the heating device to raise the temperature of the polymer object such that a surface of the polymer object rises above the melting temperature of the polymer while an interior portion of the polymer object remains below the melting temperature of the polymer.
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