公开(公告)号：WO2020027786A1

公开(公告)日：2020-02-06

申请号：PCT/US2018/044477

申请日：2018-07-31

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

Inventor： NAUKA, Krzysztof ,  CHANG, Seongsik ,  ERICKSON, Kristopher J.

IPC: B29C64/277 ,  B29C64/20 ,  B33Y30/00 ,  G12B15/02

Abstract: A three-dimensional (3D) printing device may include a pulsed electromagnetic radiation source; a build platform to maintain a number of layers of build material thereon and receive pulsed electromagnetic radiation from the pulsed electromagnetic radiation source; a micromirror array to selectively direct the pulsed electromagnetic radiation from the pulsed electromagnetic radiation source to the build material on the build platform; and a coolant tank with coolant therein to cool the micromirror array.

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.

IPC: B22F7/02 ,  B22F3/105 ,  B33Y70/00

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.

公开(公告)号：WO2019099030A1

公开(公告)日：2019-05-23

申请号：PCT/US2017/062338

申请日：2017-11-17

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

Inventor： CHAFFINS, Sterling ,  DEKAM, Kevin P. ,  ERICKSON, Kristopher J. ,  RUUD, Cory J. ,  BARONE, Jami Ryan ,  CAI, Ruhua ,  GALVAN, Anthony J.

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00

CPC classification number: B29C64/165 ,  B33Y10/00 ,  B33Y70/00

Abstract: In an example, a composition for three-dimensional (3D) printing includes a polymer build material and a non-conductive fusing agent dispensable onto the polymer build material to form a polymer-fusing agent composite portion when heated to a sintering temperature, a conductive agent dispensable onto on the polymer build material to form a polymer-conductive agent composite portion when heated at least to the sintering temperature, the conductive agent comprising: at least one conductive particulate present in an amount of from about 10% to about 60% of a total weight of the conductive agent; at least one co-solvent present in an amount of from about 10% to about 50% of a total weight of the conductive agent; and an additive present in an amount of from about 0% to about 10% of a total weight of the conductive agent.

公开(公告)号：WO2019027420A1

公开(公告)日：2019-02-07

申请号：PCT/US2017/044679

申请日：2017-07-31

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

Inventor： ERICKSON, Kristopher J. ,  ANTHONY, Thomas C.

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00

Abstract: According to an example, a green body may include from about 1 wt.% to about 20 wt.% of a metal nanoparticle binder and a build material powder, wherein the metal nanoparticle binder is selectively located within an area of the green body to impart a strength greater than about 3 MPa.

公开(公告)号：WO2019005048A1

公开(公告)日：2019-01-03

申请号：PCT/US2017/039790

申请日：2017-06-28

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

Inventor： ERICKSON, Kristopher J.

IPC: B22F3/105 ,  B33Y10/00 ,  B29C64/10 ,  B29C64/165 ,  B33Y30/00 ,  B29C64/20

Abstract: At a print temperature, a layer (having a predetermined height) of metal build material particles is formed. Also at the print temperature, a fluid containing metal nanoparticles is selectively applied to at least a portion of the layer, and at a fluid loading that wets the portion through the predetermined height without saturating the portion. The metal nanoparticles are exposed to a sintering temperature that is higher than the print temperature and at least 500 below a melting point of the metal build material particles using a predetermined number of heating events taking place at a predetermined speed or for a predetermined time, and separated by a predetermined delay time, to bind the metal build material particles together to form a bound layer. A build material surface is cooled to or below the print temperature. The forming, selectively applying, exposing, and cooling are repeated to form a part precursor.

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：WO2017196321A1

公开(公告)日：2017-11-16

申请号：PCT/US2016/031969

申请日：2016-05-12

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

Inventor： ERICKSON, Kristopher J. ,  TOM, Howard S. ,  ZHAO, Lihua ,  EMAMJOMEH, Ali

IPC: B29C67/00 ,  B33Y70/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: The present disclosure is drawn material sets, coalescent fluids, and 3-dimensional printing systems. An example material set can include an amorphous polymer powder having an average particle size from 1 micron to 300 microns, and a coalescent fluid including a viscosity reducing agent.

Abstract translation: 本公开是绘制材料组，聚结流体和三维印刷系统。 示例材料组可以包括平均粒度为1微米至300微米的无定形聚合物粉末和包含粘度降低剂的聚结剂流体。

公开(公告)号：WO2023069098A1

公开(公告)日：2023-04-27

申请号：PCT/US2021/055980

申请日：2021-10-21

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

Inventor： GALATI, Elizabeth ,  WITTKOPF, Jarrid ,  LEVIN, Emily ,  ERICKSON, Kristopher J. ,  RUDISILL, Stephen G.

IPC: B29C64/165 ,  B29C64/307 ,  B33Y10/00 ,  B33Y70/10

Abstract: A method of making an enhanced three-dimensional (3D) printing composition is disclosed herein. In an example, the method includes providing a base 3D printing composition including conductive particles and adding a vehicle to the base 3D printing composition to form an enhanced 3D printing composition having a target average size of the conductive particles and a target weight percent of the conductive particles based on a total weight of the enhanced 3D printing composition, where the vehicle comprises a humectant that is a polyol having a boiling point in a range from about 190 degrees Celsius (°C) to about 380 °C and an amount of surfactant.

公开(公告)号：WO2022093251A1

公开(公告)日：2022-05-05

申请号：PCT/US2020/058080

申请日：2020-10-30

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

Inventor： WITTKOPF, Jarrid Alexander ,  ERICKSON, Kristopher J. ,  DISCEKICI, Emre Hiro ,  CHAFFINS, Sterling ,  DEKAM, Kevin P. ,  SENGUPTA, Raghuvir N. ,  LIU, Albert ,  GALATI, Elizabeth

IPC: B29C64/165 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10

Abstract: The present disclosure describes materials, methods, and systems for three-dimensional printing. In one example, a three-dimensional printing kit can include a fusing agent and a microbe-inhibiting agent. The fusing agent can include water and an electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation and convert the radiation energy to heat. The microbe-inhibiting agent can include a liquid vehicle and a metal bis(dithiolene) complex. The disclosure also describes methods of three- dimensional printing that utilize a metal-containing microbe-inhibiting material, which can be a metal bis(dithiolene) complex or other materials.

公开(公告)号：WO2022031265A1

公开(公告)日：2022-02-10

申请号：PCT/US2020/044786

申请日：2020-08-03

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

Inventor： WITTKOPF, Jarrid ,  LUNA-RAMIREZ, Eric ,  ERICKSON, Kristopher J. ,  STASIAK, James William

IPC: B29C64/364 ,  B29C64/393 ,  B33Y50/02 ,  B33Y40/00

Abstract: In one example in accordance with the present disclosure, a three-dimensional (3D) printed sensor system is described. The 3D printed sensor system includes a 3D printed object. The 3D printed sensor system also includes a 3D printed sensor on a body of the 3D printed object. The 3D printed sensor includes a dielectric region disposed between electrodes. A capacitance of the dielectric region is indicative of an environmental condition of the 3D printed object. The 3D printed sensor system also includes a controller integrated with the body of the 3D printed object. The controller is to measure a capacitance of the 3D printed sensor.