公开(公告)号：US12187873B2

公开(公告)日：2025-01-07

申请号：US18482339

申请日：2023-10-06

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

Inventor： Shannon Reuben Woodruff ,  Stephen G. Rudisill ,  Erica Fung ,  Rachael Donovan

IPC: B29C64/165 ,  B33Y70/00 ,  C08K5/06 ,  B29K77/00 ,  B29K105/00 ,  B33Y10/00

Abstract: An example of a multi-fluid kit for three-dimensional (3D) printing includes an elasticity agent to be applied to at least a portion of a build material composition during 3D printing and a fusing agent to be applied to the at least the portion of the build material composition during 3D printing. The elasticity agent includes a plasticizer having: a formula (I): wherein n is an integer ranging from 3 to 8; or a formula (II): wherein m is an integer ranging from 3 to 8. The fusing agent includes an energy absorber.

公开(公告)号：US11426931B2

公开(公告)日：2022-08-30

申请号：US16605546

申请日：2018-07-31

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

Inventor： Kenneth Flack ,  Erica Fung ,  Carolin Fleischmann ,  Jesiska Tandy ,  Carmina Querol Esparch ,  Greg S. Long ,  Ali Emamjomeh ,  Shannon Reuben Woodruff ,  Rachael Donovan

IPC: B33Y70/00 ,  B29C64/165 ,  B33Y10/00 ,  B29K23/00 ,  B29K77/00 ,  B29K105/00

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 or amorphous thermoplastic polymer having a predicted total dimension change during 3D printing ranging from about −4% to about 9%. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline or amorphous thermoplastic polymer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber has absorption at wavelengths ranging from 800 nm to 4000 nm and has transparency at wavelengths ranging from 400 nm to 780 nm.

公开(公告)号：US11780988B2

公开(公告)日：2023-10-10

申请号：US17047181

申请日：2018-10-24

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

Inventor： Shannon Reuben Woodruff ,  Stephen G. Rudisill ,  Erica Fung ,  Rachael Donovan

IPC: B29C64/165 ,  C08K5/06 ,  B33Y70/00 ,  B33Y10/00 ,  B29K77/00 ,  B29K105/00

CPC classification number: C08K5/06 ,  B33Y70/00 ,  B29C64/165 ,  B29K2077/00 ,  B29K2105/0032 ,  B29K2105/0038 ,  B33Y10/00

Abstract: An example of a multi-fluid kit for three-dimensional (3D) printing includes an elasticity agent to be applied to at least a portion of a build material composition during 3D printing and a fusing agent to be applied to the at least the portion of the build material composition during 3D printing. The elasticity agent includes a plasticizer having: a formula (I): wherein n is an integer ranging from 3 to 8; or a formula (II): wherein m is an integer ranging from 3 to 8. The fusing agent includes an energy absorber.

公开(公告)号：US11628619B2

公开(公告)日：2023-04-18

申请号：US17864903

申请日：2022-07-14

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

Inventor： Kenneth Flack ,  Erica Fung ,  Carolin Fleischmann ,  Jesiska Tandy ,  Carmina Querol Esparch ,  Greg S. Long ,  Ali Emamjomeh ,  Shannon Reuben Woodruff ,  Rachael Donovan

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  B29K23/00 ,  B29K77/00 ,  B29K105/00

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 or amorphous thermoplastic polymer having a predicted total dimension change during 3D printing ranging from about −4% to about 9%. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline or amorphous thermoplastic polymer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber has absorption at wavelengths ranging from 800 nm to 4000 nm and has transparency at wavelengths ranging from 400 nm to 780 nm.

公开(公告)号：US20220064461A1

公开(公告)日：2022-03-03

申请号：US16605352

申请日：2018-06-19

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

Inventor： Erica Fung ,  Carolin Fleischmann ,  Jesiska Tandy ,  Carmina Querol Esparch ,  Greg S. Long ,  Ali Emamjomeh ,  Shannon Reuben Woodruff ,  Rachael Donovan ,  Kenneth Flack

IPC: C09D11/102 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165 ,  C09D11/037 ,  C09D11/033

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 polyamide having a melt enthalpy ranging from greater than 5 J/g to less than 150 J/g. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the polyamide in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber is 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.

公开(公告)号：US20210402697A1

公开(公告)日：2021-12-30

申请号：US16605224

申请日：2018-04-30

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

Inventor： Erica Fung ,  Jesiska Tandy ,  Yi Feng ,  Alay Yemane ,  Allen Jin

IPC: B29C64/357 ,  B29C64/153 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

Abstract: In some examples, a method measures values of a property of a build material aged in a heated environment, and computes, using a predictive model for each of a plurality of recyclability ratios, output values of the property over a plurality of generations of the build material, each recyclability ratio of the plurality of recyclability ratios representing relative amounts of fresh build material and used build material. The method further includes presenting the output values of the property over the plurality of generations to enable selection of a recyclability ratio to use in building a part using the build material.

公开(公告)号：US20220111587A1

公开(公告)日：2022-04-14

申请号：US17561059

申请日：2021-12-23

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

Inventor： Shannon Reuben Woodruff ,  Ali Emamjomeh ,  Yi Feng ,  Erica Fung ,  Carolin Fleischmann ,  Geoffrey Schmid

IPC: B29C64/165 ,  B33Y70/00 ,  B33Y10/00 ,  B29K67/00 ,  B29K77/00

Abstract: This disclosure relates to a material set including a build material for 3-D printing including particles of a polymer comprising polymer chains having at least one reactive group that is protected with a protecting group. The material set further includes an inkjet composition including a de-protecting agent for removal of the protecting group, and a liquid carrier.

公开(公告)号：US20210403749A1

公开(公告)日：2021-12-30

申请号：US16605391

申请日：2018-06-18

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

Inventor： Erica Fung ,  Carolin Fleischmann ,  Jasiska Tandy ,  Carmina Querol Esparch ,  Greg S. Long ,  Ali Emamjomeh ,  Shannon Reuben Woodruff ,  Rachael Donovan ,  Kenneth Flack

IPC: C09D177/00 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D175/04

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 thermoplastic elastomer having: an avalanche angle ranging from about 49 degrees to about 59 degrees; a break energy ranging from about 55 kJ/kg to about 78 kJ/kg; and an avalanche energy ranging from about 10 kJ/kg to about 27 kJ/kg. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the thermoplastic elastomer in the at least the portion.

公开(公告)号：US20210339467A1

公开(公告)日：2021-11-04

申请号：US16603970

申请日：2018-06-18

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

Inventor： Carolin Fleischmann ,  Erica Fung ,  Jesiska Tandy ,  Carmina Querol Esparch ,  Greg S. Long ,  Ali Emamjomeh ,  Shannon Reuben Woodruff ,  Rachael Donovan ,  Kenneth Flack

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

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 thermoplastic elastomer having a melt enthalpy ranging from greater than 5 J/g to about 177 J/g. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the thermoplastic elastomer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber is 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.

公开(公告)号：US20210269620A1

公开(公告)日：2021-09-02

申请号：US17047181

申请日：2018-10-24

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

Inventor： Sharon Reuben Woodruff ,  Stephen G. Rudisill ,  Erica Fung ,  Rachael Donovan

IPC: C08K5/06 ,  B33Y70/00

Abstract: An example of a multi-fluid kit for three-dimensional (3D) printing includes an elasticity agent to be applied to at least a portion of a build material composition during 3D printing and a fusing agent to be applied to the at least the portion of the build material composition during 3D printing. The elasticity agent includes a plasticizer having: a formula (I): wherein n is an integer ranging from 3 to 8; or a formula (II): wherein m is an integer ranging from 3 to 8. The fusing agent includes an energy absorber.