公开(公告)号：US10889057B2

公开(公告)日：2021-01-12

申请号：US16073262

申请日：2016-05-12

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

Inventor： Kristopher J. Erickson ,  Howard S Tom ,  Lihua Zhao ,  Ali Emamjomeh

IPC: B29C64/165 ,  C08K3/01 ,  C08K3/04 ,  B33Y30/00 ,  B33Y70/00 ,  B33Y10/00 ,  B29K105/00

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.

公开(公告)号：US20210001545A1

公开(公告)日：2021-01-07

申请号：US17031526

申请日：2020-09-24

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

Inventor： Lihua Zhao ,  Yan Zhao ,  Hou T. Ng

IPC: B29C64/153 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/165 ,  B33Y50/02

Abstract: In an example implementation, a method of printing a multi-structured three-dimensional (3D) object includes forming a layer of sinterable material. The method includes processing a first portion of the sinterable material using a first set of processing parameters and processing a second portion of the sinterable material using a second set of processing parameters. The processed first and second portions form, respectively, parts of a first and second structure of a multi-structured 3D object.

公开(公告)号：US10766246B2

公开(公告)日：2020-09-08

申请号：US15518477

申请日：2014-12-15

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

Inventor： Krzysztof Nauka ,  Sivapackia Ganapathiappan ,  Lihua Zhao ,  Howard S. Tom ,  Yan Zhao ,  Hou T. Ng

IPC: B29C64/10 ,  B33Y50/02 ,  B33Y10/00 ,  B29C70/68 ,  B29C64/165 ,  B29C64/153 ,  B29C64/386 ,  B33Y30/00 ,  B29K77/00

Abstract: In one example, a non-transitory processor readable medium with instructions thereon that when executed cause an additive manufacturing machine to partially or completely bury a part in layers of molten build material.

公开(公告)号：US10731044B2

公开(公告)日：2020-08-04

申请号：US15507584

申请日：2014-09-26

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

Inventor： Sivapackia Ganapathiappan ,  Howard S. Tom ,  Lihua Zhao ,  Krzysztof Nauka ,  Yan Zhao ,  Hou T. Ng ,  Keshava A. Prasad

IPC: C09D11/037 ,  C09D11/50 ,  B33Y70/00 ,  C09D11/033 ,  B29C67/00 ,  B33Y10/00 ,  C09D11/328 ,  C09D11/322 ,  B29C64/165

Abstract: The present disclosure is drawn to coalescent inks and material sets for 3D printing. The coalescent ink can include a water-soluble near-infrared dye having a peak absorption wavelength from 800 nm to 1400 nm. The coalescent ink can also contain water.

公开(公告)号：US10556386B2

公开(公告)日：2020-02-11

申请号：US15567551

申请日：2015-07-30

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

Inventor： Yan Zhao ,  Jun Zeng ,  Wei Huang ,  Lihua Zhao ,  Eric G. Hanson

IPC: B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/165 ,  B29C64/153 ,  B29C64/295 ,  B29C64/393 ,  B29C65/14

Abstract: In one example, a method for printing a three-dimensional (3D) object is described. The method may include a processor depositing a layer of a sinterable material on a support member, and preheating the layer of the sinterable material using a moveable radiation source. The method may further include the processor depositing a fusing agent on an imaged area of the layer of the sinterable material and fusing the imaged area of the layer of the sinterable material using the moveable radiation source.

公开(公告)号：US20190147585A1

公开(公告)日：2019-05-16

申请号：US16098061

申请日：2016-07-29

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

Inventor： Aja Hartman ,  Lihua Zhao

IPC: G06T7/00 ,  G01N21/88 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02

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.

公开(公告)号：US20190143605A1

公开(公告)日：2019-05-16

申请号：US16098106

申请日：2016-07-21

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

Inventor： Wei Huang ,  Lihua Zhao ,  Gary J. Dispoto

IPC: B29C64/393 ,  B29C64/153 ,  B33Y30/00 ,  B33Y70/00 ,  B33Y50/02

Abstract: A 3D object is additively formed via arranging non-conductive material relative to a receiving surface. During additive formation of the 3D object, a conductive channel is formed as part of the 3D object. In some instances, non-destructive fracture sensing is performed via measurement of an electrical parameter of the conductive channel.

公开(公告)号：US20190030801A1

公开(公告)日：2019-01-31

申请号：US16073262

申请日：2016-05-12

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

Inventor： Kristopher J. Erickson ,  Howard S Tom ,  Lihua Zhao ,  Ali Emamjomeh

IPC: B29C64/165 ,  C08K3/01 ,  C08K3/04

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.

公开(公告)号：US20180133975A1

公开(公告)日：2018-05-17

申请号：US15567551

申请日：2015-07-30

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

Inventor： Yan Zhao ,  Jun Zeng ,  Wei Huang ,  Lihua Zhao ,  Eric G. Hanson

IPC: B29C65/14 ,  B29C64/295 ,  B29C64/165 ,  B29C64/393

Abstract: In one example, a method for printing a three-dimensional (3D) object is described. The method may include a processor depositing a layer of a sinterable material on a support member, and preheating the layer of the sinterable material using a moveable radiation source. The method may further include the processor depositing a fusing agent on an imaged area of the layer of the sinterable material and fusing the imaged area of the layer of the sinterable material using the moveable radiation source.

公开(公告)号：US20170305066A1

公开(公告)日：2017-10-26

申请号：US15513483

申请日：2014-09-26

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

Inventor： Krzysztof Nauka ,  Sivapackia Ganapathiappan ,  Lihua Zhao ,  Howard S. Tom ,  Yan Zhao ,  Hou T. Ng ,  James Elmer Abbott, Jr. ,  Alexander Govyadinov ,  Vladek Kasperchik

IPC: B29C64/264 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/393

CPC classification number: B29C64/264 ,  B29C64/165 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

Abstract: In one example, a non-transitory processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to expose build material to a light source emitting monochromatic light within a band of wavelengths that includes a peak light absorption of a liquid coalescing agent to be dispensed on to the build material.