公开(公告)号：US20170246811A1

公开(公告)日：2017-08-31

申请号：US15511906

申请日：2014-10-08

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

Inventor： David H. Donovan ,  Jacob Tyler Wright

IPC: B29C67/00 ,  B33Y50/02 ,  G05B19/4099 ,  H04N1/405

CPC classification number: G05B19/4099 ,  B29C64/386 ,  B33Y50/02 ,  G05B2219/49023 ,  H04N1/405

Abstract: A method of forming a three-dimensional object includes non-deterministically generating halftone data for portions of a slice of three-dimensional model data of the three-dimensional object that overlap with a previous slice. The non-deterministically generating halftone data may comprise using randomized initialization for each slice of a three-dimensional object.

公开(公告)号：US20250034333A1

公开(公告)日：2025-01-30

申请号：US18907012

申请日：2024-10-04

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

Inventor： Ali Emamjomeh ,  Shannon Reuben Woodruff ,  Kenneth Flack ,  Greg S. Long ,  Katrina Donovan ,  Erica Fung ,  Jacob Tyler Wright ,  James W. Stasiak

IPC: C08G65/00 ,  B29C64/165 ,  B29C64/194 ,  B29C64/264 ,  B29K75/00 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/00 ,  B33Y70/10 ,  B33Y80/00 ,  C08F14/26 ,  C08G77/46 ,  C08L27/18 ,  C08L77/00 ,  C09D11/037 ,  C09D11/101 ,  C09D11/102 ,  C09D11/106 ,  C09D11/322 ,  C09D11/38

Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline thermoplastic polymer having a surface energy density greater than 41 mN/m. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline thermoplastic polymer in the at least the portion.

公开(公告)号：US12110362B2

公开(公告)日：2024-10-08

申请号：US16756391

申请日：2018-09-07

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

Inventor： Ali Emamjomeh ,  Shannon Reuben Woodruff ,  Kenneth Flack ,  Greg S Long ,  Katrina Donovan ,  Erica Fung ,  Jacob Tyler Wright ,  James W Stasiak

IPC: C08G65/00 ,  B29C64/165 ,  B29C64/194 ,  B29C64/264 ,  B29K75/00 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/00 ,  B33Y70/10 ,  B33Y80/00 ,  C08F14/26 ,  C08G77/46 ,  C08L27/18 ,  C08L77/00 ,  C09D11/037 ,  C09D11/101 ,  C09D11/102 ,  C09D11/106 ,  C09D11/322 ,  C09D11/38

CPC classification number: C08G65/007 ,  B29C64/165 ,  B29C64/194 ,  B29C64/264 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/00 ,  C08F14/26 ,  C08G77/46 ,  C08L27/18 ,  C08L77/00 ,  C09D11/037 ,  C09D11/101 ,  C09D11/102 ,  C09D11/106 ,  C09D11/322 ,  C09D11/38 ,  B29K2075/00 ,  B29K2995/0021 ,  B29K2995/004 ,  B33Y70/10 ,  B33Y80/00 ,  C08L2205/06

Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline thermoplastic polymer having a surface energy density greater than 41 mN/m. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline thermoplastic polymer in the at least the portion.

公开(公告)号：US11299644B2

公开(公告)日：2022-04-12

申请号：US16488646

申请日：2017-11-30

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

Inventor： Carolin Fleischmann ,  Shannon Reuben Woodruff ,  Jacob Tyler Wright ,  Geoffrey Schmid

IPC: C09D11/38 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165 ,  C08G77/46 ,  C08L27/18 ,  C08L77/00 ,  C09D11/102 ,  C09D11/106 ,  B29C64/264 ,  B29C64/194 ,  B33Y40/10 ,  C09D11/037 ,  C09D11/101 ,  C09D11/322 ,  C08F14/26 ,  C08G65/00 ,  B29K75/00 ,  B33Y80/00

Abstract: An example of an anti-coalescing agent for a three-dimensional (3D) printing process includes a vehicle and an anti-coalescing polymer dispersed in the vehicle. The vehicle includes a co-solvent, a surfactant, a humectant, and water. The anti-coalescing polymer has a mean particle size ranging from about 50 nm to about 195 nm, and the anti-coalescing polymer is to coat polymeric build material particles to prevent the polymeric build material particles from coalescing during electromagnetic radiation exposure of the 3D printing process.

公开(公告)号：US20210291440A1

公开(公告)日：2021-09-23

申请号：US16488646

申请日：2017-11-30

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

Inventor： Carolin Fleischmann ,  Shannon Reuben Woodruff ,  Jacob Tyler Wright ,  Geoffrey Schmid

IPC: B29C64/165 ,  C08G65/00 ,  C08F14/26 ,  B29C64/194 ,  B29C64/264

Abstract: An example of an anti-coalescing agent for a three-dimensional (3D) printing process includes a vehicle and an anti-coalescing polymer dispersed in the vehicle. The vehicle includes a co-solvent, a surfactant, a humectant, and water. The anti-coalescing polymer has a mean particle size ranging from about 50 nm to about 195 nm, and the anti-coalescing polymer is to coat polymeric build material particles to prevent the polymeric build material particles from coalescing during electromagnetic radiation exposure of the 3D printing process.

公开(公告)号：US10564629B2

公开(公告)日：2020-02-18

申请号：US15511906

申请日：2014-10-08

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

Inventor： David H. Donovan ,  Jacob Tyler Wright

IPC: G06T15/00 ,  G05B19/4099 ,  H04N1/405 ,  B33Y50/02 ,  B29C64/386

Abstract: A method of forming a three-dimensional object includes non-deterministically generating halftone data for portions of a slice of three-dimensional model data of the three-dimensional object that overlap with a previous slice. The non-deterministically generating halftone data may comprise using randomized initialization for each slice of a three-dimensional object.