公开(公告)号：US11504914B2

公开(公告)日：2022-11-22

申请号：US16608220

申请日：2018-06-04

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

Inventor： Xin Cheng ,  Vanessa Verzwyvelt ,  Arthur H. Barnes ,  Michael Crockett ,  Jake Wright ,  Morgan T. Schramm

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

Abstract: A system determines an object part density relative to a build region in a layer of build material used in an additive manufacturing machine, the object part density based on a relative portion of the build region where an energy absorbing agent is applied. The system controls a thermal characteristic of the build region in the layer of build material based on the determined object part density.

公开(公告)号：US20200233400A1

公开(公告)日：2020-07-23

申请号：US16605230

申请日：2017-10-14

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

Inventor： Jake Wright ,  Matthew A Shepherd

IPC: G05B19/4093 ,  B33Y50/00 ,  B29C64/386

Abstract: In an example implementation, a method of processing a 3D object model includes receiving render data of a 2D slice of a 3D object model and generating distance values indicating how far away voxels in the 2D slice are from a nearest edge of the 3D object model. The method also includes detecting a feature of the 3D object model from the distance values, and generating modified render data to be subsequently used in a 3D printing system to produce the feature in a 3D part.

公开(公告)号：US20190134896A1

公开(公告)日：2019-05-09

申请号：US16097822

申请日：2016-07-20

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

Inventor： Hector Lebron ,  Jake Wright ,  Alexey S. Kabalnov

IPC: B29C64/165 ,  B29C64/393

Abstract: In an example implementation, a method of printing a three-dimensional (3D) object includes, applying a layer of build powder onto a printing platform and depositing a deliberate micropattern of liquid agent onto the powder within a macropattern that defines a cross-section of a 3D object to be printed. The method includes forming a microstructure from the deliberate micropattern by applying fusing energy to the powder, the microstructure comprising fused areas and sintered areas between the fused areas.

公开(公告)号：US11367245B2

公开(公告)日：2022-06-21

申请号：US16077774

申请日：2017-07-10

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

Inventor： Matthew A Shepherd ,  Jake Wright ,  Hector Jose Lebron ,  Vanessa Verzwyvelt ,  Morgan T Schramm

IPC: G06T15/00 ,  G06T15/08 ,  B33Y50/02

Abstract: In an example a method includes identifying, by a processor, in a data model of at least a portion of a three-dimensional object, an object property associated with a location in the three-dimensional object. A data model of a virtual build volume comprising at least a portion of the three-dimensional object may be generated in which an association with an object property is dispersed beyond the location.

公开(公告)号：US20220143927A1

公开(公告)日：2022-05-12

申请号：US17579845

申请日：2022-01-20

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

Inventor： Vanessa Verzwyvelt ,  Matthew A. Shepherd ,  Arthur H. Barnes ,  Wesley R. Schalk ,  Hector Jose Lebron ,  Jake Wright

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/295 ,  B29C64/205

Abstract: A control system for a three-dimensional printer includes an energy component interface, an agent depositing component interface, and control logic. The control logic controls the operation of an energy component through the energy component interface and an agent depositing component through the agent depositing component, in forming an output object that is specified in a print job. Additionally, in some examples, the control logic can implement a plurality of modes. Each mode, when selected modulate one or more operational parameters of a least one of the energy component or agent depositing component.

公开(公告)号：US11214001B2

公开(公告)日：2022-01-04

申请号：US16075705

申请日：2017-07-10

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

Inventor： Vanessa Verzwyvelt ,  Matthew A. Shepherd ,  Jake Wright ,  Hector Lebron ,  Morgan T. Schramm

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/295 ,  B29C64/291

Abstract: In an example, a method includes providing a build material. Print agent comprising colorant may be applied to a first portion of the build material to be fused in additive manufacturing, wherein the print agent is applied according to a target color for the first portion. A combination of a fusion inhibiting agent and colorant may be applied to a second portion of the build material, wherein the print agent is applied according to the target color of the first portion and the second portion is adjacent to the first portion. The method may further include heating the build material by exposing the build material to radiation so as to cause fusing of the first portion.

公开(公告)号：US10682810B2

公开(公告)日：2020-06-16

申请号：US16051361

申请日：2018-07-31

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

Inventor： Stephen G. Rudisill ,  Vladek Kasperchik ,  Alexey S. Kabalnov ,  Shannon Reuben Woodruff ,  Thomas M. Sabo ,  Jake Wright ,  Hector Lebron ,  Vanessa Verzwyvelt ,  Morgan T. Schramm ,  Matthew A. Shepherd

IPC: B29C67/00 ,  B29C64/165 ,  C09D11/322 ,  C09D1/00 ,  C09D11/101 ,  C09D11/328 ,  B22F1/00 ,  B82B3/00 ,  B33Y70/00 ,  B33Y10/00

Abstract: In an example of a three-dimensional printing method, a polymeric build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric build material. The fusing agent includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and an aqueous vehicle. The polymeric build material is exposed to electromagnetic radiation to fuse the portion of the polymeric build material in contact with the fusing agent to form a layer.

公开(公告)号：US11279091B2

公开(公告)日：2022-03-22

申请号：US16075706

申请日：2017-07-10

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

Inventor： Hector Lebron ,  Jake Wright ,  Morgan T. Schramm ,  Matthew A. Shepherd

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/153 ,  B22F10/00 ,  B28B1/00 ,  B28B17/00 ,  B22F10/10

Abstract: In an example, a method includes forming a layer of build material, processing a first portion of the build material by distributing a print agent using a first distribution pattern, the first distribution pattern having a first print agent dispersion characteristic and processing a second portion of the build material by distributing a print agent using a second distribution pattern, the second distribution pattern having a second print agent dispersion characteristic. The method may further include heating the build material by exposing the layer of build material to radiation so as to cause fusing of the first and second portion.

公开(公告)号：US20210362410A1

公开(公告)日：2021-11-25

申请号：US17395002

申请日：2021-08-05

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

Inventor： Stephen G. Rudisill ,  Alexey S. Kabalnov ,  Keshava A. Prasad ,  Sivapackia Ganapathiappan ,  Jake Wright ,  Vladek Kasperchik

IPC: B29C64/188 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/165 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/264 ,  B29C64/112 ,  B29C64/393

Abstract: In a three-dimensional printing method example, a polymeric or polymeric composite build material is applied. A fusing agent is applied on at least a portion of the build material. The fusing agent includes an aqueous or non-aqueous vehicle and an inorganic pigment dispersed in the aqueous or non-aqueous vehicle, wherein the inorganic pigment is selected from the group consisting of lanthanum hexaboride, tungsten bronzes, indium tin oxide, aluminum zinc oxide, ruthenium oxide, silver, gold, platinum, iron pyroxenes, modified iron phosphates (AxFeyPO4), modified copper pyrophosphates (AxCuyP2O7), and combinations thereof. The build material is exposed to electromagnetic radiation, thereby fusing the portion of the build material in contact with the fusing agent to form a layer.

公开(公告)号：US11110653B2

公开(公告)日：2021-09-07

申请号：US15763223

申请日：2015-10-23

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

Inventor： Stephen G. Rudisill ,  Alexey S. Kabalnov ,  Keshava A. Prasad ,  Sivapackia Ganapathiappan ,  Jake Wright ,  Vladek Kasperchik

IPC: B29C64/188 ,  B33Y10/00 ,  B29C64/165 ,  B33Y70/00 ,  B29C64/264 ,  B29C64/112 ,  B29K77/00 ,  B33Y50/02 ,  B33Y30/00 ,  B29C64/393

Abstract: In a three-dimensional printing method example, a polymeric or polymeric composite build material is applied. A fusing agent is applied on at least a portion of the build material. The fusing agent includes an aqueous or non-aqueous vehicle and a plasmonic resonance absorber having absorption at wavelengths ranging from 800 nm to 4000 nm and having transparency at wavelengths ranging from 400 nm to 780 nm dispersed in the aqueous or non-aqueous vehicle. The build material is exposed to electromagnetic radiation, thereby fusing the portion of the build material in contact with the fusing agent to form a layer.