公开(公告)号：US11739214B2

公开(公告)日：2023-08-29

申请号：US17837232

申请日：2022-06-10

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

Inventor： Carolin Fleischmann ,  Rachael Donovan ,  Shannon Reuben Woodruff ,  Yi Feng

IPC: B33Y70/00 ,  C08L77/04 ,  B33Y10/00 ,  B29C64/165 ,  C09D11/102 ,  C09D11/30 ,  B29K77/00

CPC classification number: C08L77/04 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/102 ,  C09D11/30 ,  B29K2077/00

Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.

公开(公告)号：US20220339862A1

公开(公告)日：2022-10-27

申请号：US17859922

申请日：2022-07-07

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

Inventor： Carolin Fleischmann ,  Hector Lebron ,  Yi Feng ,  Jesiska Tandy ,  Alay Yemane ,  Ali Emamjomeh

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/322 ,  C09D11/324

Abstract: The present disclosure relates to a composition for printing a three-dimensional object. The composition comprises composite particles comprising a thermoplastic polymer and a colour-masking pigment. The colour-masking pigment is encapsulated by the thermoplastic polymer and is present in an amount of from about 1.5 to less than about 6 wt % of the total weight of the composite particles.

公开(公告)号：US20220315779A1

公开(公告)日：2022-10-06

申请号：US17837232

申请日：2022-06-10

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

Inventor： Carolin Fleischmann ,  Rachael Donovan ,  Shannon Reuben Woodruff ,  Yi Feng

IPC: C09D11/102 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165 ,  C09D11/30

Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.

公开(公告)号：US11235521B2

公开(公告)日：2022-02-01

申请号：US16077752

申请日：2017-07-14

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 method of 3-D printing comprising: applying a layer of build material onto a print platform, wherein the build material comprises particles of a polymer comprising polymer chains having at least one reactive group that is protected with a protecting group; printing a de-protecting agent at selected locations on the layer of build material; and coalescing particles of the polymer at the printed locations on the layer of build material to form a coalesced polymer layer.

公开(公告)号：US20210292579A1

公开(公告)日：2021-09-23

申请号：US16490917

申请日：2017-11-17

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

Inventor： Carolin Fleischmann ,  Rachael Donovan ,  Shannon Reuben Woodruff ,  Yi Feng

IPC: C09D11/102 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/30

Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.

公开(公告)号：US10717232B2

公开(公告)日：2020-07-21

申请号：US16073278

申请日：2016-05-13

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

Inventor： Yi Feng ,  Erica Montei Fung ,  Michael A. Novick

IPC: B29C64/165 ,  B33Y70/00 ,  B29C64/20 ,  B33Y10/00 ,  C08K3/04 ,  B33Y30/00 ,  B33Y80/00 ,  B29C64/357 ,  B29K77/00 ,  B29K105/00

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing, 3-dimensional printing systems, and 3-dimensional printed parts. A material set can include a polyamide polymer powder having an average particle size from 20 μm to 120 μm and a fusing agent. The polyamide-11 can have a solution viscosity from 1.5 to 1.75 at room temperature, and may increase by no more than 5% after exposure to 180° C. for 20 hours. The fusing agent can include an energy absorber capable of absorbing electromagnetic radiation to produce heat.

公开(公告)号：US10167404B2

公开(公告)日：2019-01-01

申请号：US15690004

申请日：2017-08-29

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

Inventor： Yi Feng ,  Yubai Bi ,  Daniel Vincent Keane ,  Ali Emamjomeh

IPC: C09D11/54 ,  C09D11/326 ,  C09D11/101 ,  C09D11/40 ,  B41M5/00 ,  B41M7/00 ,  C09D11/102 ,  B41J11/00 ,  C09D11/36

Abstract: A fixable, UV curable ink includes an aqueous ink vehicle including water and a co-solvent, a pigment, and a dispersant. A polyurethane polymer dispersion is suspended as droplets within the aqueous ink vehicle. The polyurethane polymer dispersion includes a polyurethane polymer selected from the group consisting of a polyether-based polyurethane, a polyester-based polyurethane, a polycarbonate-based polyurethane, and mixtures thereof. The polyurethane polymer has i) an acid number ranging from 0 mg/g to less than 20 mg/g and ii) a glass transition temperature of less than 0° C. A water soluble or water dispersible photoinitiator is present in the fixable, UV curable ink. A base may be included in an amount sufficient to adjust a pH of the UV curable ink so that it ranges from 7.5 to 9.5. An additive may be included and selected from the group consisting of a biocide, a non-ionic surfactant, an anti-kogation agent, a buffer, and combinations thereof.

公开(公告)号：US09777179B2

公开(公告)日：2017-10-03

申请号：US15103297

申请日：2014-01-28

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

Inventor： Yi Feng ,  Yubai Bi ,  Daniel Vincent Keane ,  Ali Emamjomeh

IPC: C09D11/54 ,  C09D11/326 ,  C09D11/36 ,  B41J11/00 ,  C09D11/102 ,  B41M7/00 ,  B41M5/00 ,  C09D11/40 ,  C09D11/101

CPC classification number: C09D11/54 ,  B41J11/0015 ,  B41M5/0017 ,  B41M7/0081 ,  C09D11/101 ,  C09D11/102 ,  C09D11/326 ,  C09D11/36 ,  C09D11/40

Abstract: An ink set includes a pre-treatment fixing fluid including at least two metal salts and a fixable, ultraviolet (UV) curable ink. The UV curable ink includes an aqueous ink vehicle, a pigment dispersed in the aqueous ink vehicle, and a dispersant. A polyurethane polymer dispersion is suspended as droplets within the aqueous ink vehicle. The polyurethane polymer dispersion includes a polyurethane polymer selected from the group consisting of a polyether-based polyurethane, a polyester-based polyurethane, a polycarbonate-based polyurethane, and mixtures thereof. The polyurethane polymer has i) an acid number ranging from 0 mg/g to less than 20 mg/g and ii) a glass transition temperature of less than 0 C. A water soluble or water dispersible photoinitiator is present in the pre-treatment fixing fluid or in the fixable, UV curable ink.