公开(公告)号：US20220258416A1

公开(公告)日：2022-08-18

申请号：US17740029

申请日：2022-05-09

Applicant: Hewlett-Packard Development Company, L.P.

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

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B29C64/214 ,  B29C64/357 ,  B29C64/245 ,  B29C64/286 ,  B29C64/371

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：US20190054702A1

公开(公告)日：2019-02-21

申请号：US16077320

申请日：2017-01-18

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

Inventor： Aja HARTMAN ,  Lihua ZHAO

IPC: B29C64/393 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G01N25/72

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.

公开(公告)号：US20180320009A1

公开(公告)日：2018-11-08

申请号：US15764863

申请日：2016-01-27

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sivapackia GANAPATHIAPPAN ,  Howard S. TOM ,  Yan ZHAO ,  Kristopher J. ERICKSON ,  Krzysztof NAUKA ,  Lihua ZHAO

IPC: C09D11/322 ,  C09D11/023 ,  C09D11/101 ,  C09D11/037 ,  C09D11/102 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165

CPC classification number: C09D11/322 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/023 ,  C09D11/037 ,  C09D11/101 ,  C09D11/102 ,  C09D11/106 ,  C09D11/30 ,  C09D11/32 ,  C09D11/36

Abstract: The present disclosure is drawn to coalescent inks and material sets, such as for 3D printing. In one example, the coalescent ink can include a conjugated polymer, a colorant imparting a visible color to the coalescent ink, and an ink vehicle comprising a high boiling point co-solvent having a boiling point of 250° C. or greater. The high boiling point co-solvent can be present in an amount from about 1 wt % to about 4 wt % with respect to the coalescent ink.

公开(公告)号：US20230264415A1

公开(公告)日：2023-08-24

申请号：US18141830

申请日：2023-05-01

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kristopher ERICKSON ,  Jarrid WITTKOPF ,  Lihua ZHAO

IPC: B29C64/188 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/264 ,  B29C64/209 ,  B29C64/393 ,  B29C64/165

CPC classification number: B29C64/188 ,  B29C64/165 ,  B29C64/209 ,  B29C64/264 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29L2031/34

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：US20220314535A1

公开(公告)日：2022-10-06

申请号：US17843222

申请日：2022-06-17

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kristopher J. Erickson ,  Thomas C. ANTHONY ,  Lihua ZHAO

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/30 ,  B33Y40/20 ,  B29C71/00 ,  B29C71/02 ,  C23C18/16 ,  C25D5/56

Abstract: A device includes a coater, a dispenser, and a treatment portion. The coater is to coat, layer-by-layer, a build material relative to a build pad to form a 3D object. The dispenser is to at least dispense a fluid including a first at least potentially electrically conductive material in at least some selected locations of an external surface of the 3D object. The treatment portion is to treat the 3D object to substantially increase electrically conductivity on the external surface of the 3D object at the at least some selected locations.

公开(公告)号：US20190016043A1

公开(公告)日：2019-01-17

申请号：US16080233

申请日：2017-06-13

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

Inventor： Adekunle OLUBUMMO ,  Lihua ZHAO

IPC: B29C64/165 ,  B29C64/214 ,  B29C64/218

Abstract: Compositions and methods for 3D printing are described herein. In an example, a composition for 3D printing can comprise a build material comprising at least one polymer and at least one first electron donor compound; and a fusing agent comprising (i) a metal bis(dithiolene) complex, (ii) at least one surfactant, at least one second electron donor compound, or combinations thereof, (iii) a polar aprotic solvent, and (iv) water. The at least one first electron donor compound and the at least one second electron donor compound can be the same or different.

公开(公告)号：US20240278487A1

公开(公告)日：2024-08-22

申请号：US18565648

申请日：2021-06-03

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY , L.P. ,  NANYANG TECHNOLOGICAL UNIVERSITY

Inventor： Jiayao CHEN ,  Kun ZHOU ,  Lihua ZHAO

IPC: B29C64/165 ,  B29C64/188 ,  B29K77/00 ,  B29K105/00 ,  B29K105/12 ,  B29K477/00 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00

CPC classification number: B29C64/165 ,  B29C64/188 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B29K2077/00 ,  B29K2105/0005 ,  B29K2105/12 ,  B29K2105/251 ,  B29K2477/10

Abstract: A three-dimensional (3D) printing build material composition includes polyamide particles and a filler material consisting of aramid fibers having an aspect ratio ranging from about 0.1 mm/20 μm to about 1.2 mm/16 μm. The polyamide particles are present in an amount of at least 82 wt % based on a total weight of the build material composition, and the aramid fibers are present in an amount ranging from about 2 wt % to about 18 wt % based on the total weight of the build material composition.

公开(公告)号：US20230373157A1

公开(公告)日：2023-11-23

申请号：US18228526

申请日：2023-07-31

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

Inventor： Yan ZHAO ,  Kristopher J. ERICKSON ,  Aja HARTMAN ,  Lihua ZHAO ,  Sterling CHAFFINS ,  Kevin P. DEKAM

IPC: B29C64/165 ,  B33Y10/00 ,  B29C64/112 ,  B33Y70/10 ,  B33Y70/00 ,  B29K77/00 ,  B29K105/16 ,  B29K505/14 ,  B29K105/00 ,  B29C64/20 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29K507/04

CPC classification number: B29C64/165 ,  B33Y10/00 ,  B29C64/112 ,  B33Y70/10 ,  B33Y70/00 ,  B29K2077/00 ,  B29K2105/162 ,  B29K2505/14 ,  B29K2995/0005 ,  B29K2105/0023 ,  B29C64/20 ,  B29C64/393 ,  B29K2105/005 ,  B33Y30/00 ,  B33Y50/02 ,  B29K2105/0032 ,  B29K2507/04

Abstract: In an example method for forming three-dimensional (3D) printed electronic parts, a build material is applied. An electronic agent is selectively applied in a plurality of passes on a portion of the build material. A fusing agent is also selectively applied on the portion of the build material. The build material is exposed to radiation in a plurality of heating events. During at least one of the plurality of heating events, the portion of the build material in contact with the fusing agent fuses to form a region of a layer. The region of the layer exhibits an electronic property. An order of the plurality of passes, the selective application of the fusing agent, and the plurality of heating events is controlled to control a mechanical property of the layer and the electronic property of the region.

公开(公告)号：US20230234298A1

公开(公告)日：2023-07-27

申请号：US18127365

申请日：2023-03-28

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Aja HARTMAN ,  Lihua ZHAO

IPC: B29C64/393 ,  B29C64/165 ,  G01N25/72 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  G01N21/00

CPC classification number: B29C64/393 ,  B29C64/165 ,  G01N25/72 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  G01N21/00

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.

公开(公告)号：US20230067362A1

公开(公告)日：2023-03-02

申请号：US17799719

申请日：2021-03-15

Applicant: Hewlett-Packard Development Company, L.P.

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

IPC: B29C64/30 ,  B33Y10/00 ,  B33Y40/20 ,  B29C64/165

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.