公开(公告)号：US20250066583A9

公开(公告)日：2025-02-27

申请号：US17298637

申请日：2020-04-24

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Krzysztof Nauka ,  Vladek P. Kasperchik

IPC: C08K5/25 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/10 ,  C08K3/22 ,  C08L77/02

Abstract: An example of an ultraviolet (UV) light fusing agent for three-dimensional (3D) printing includes a vehicle and a multi-functional antioxidant and UV light absorber dispersed in the vehicle. The vehicle includes water and a water miscible or water soluble organic solvent. The multi-functional antioxidant and UV light absorber includes a metal oxide particle that is to absorb UV radiation having a wavelength within a range from about 330 nm to about 405 nm and a passivating agent complexed with at least a portion of a surface of the metal oxide.

公开(公告)号：US12227659B2

公开(公告)日：2025-02-18

申请号：US17298923

申请日：2019-06-10

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Stephen G. Rudisill ,  Alexey S. Kabalnov

IPC: C09D11/38 ,  B29C64/165 ,  B29K77/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y70/10 ,  C08K3/26 ,  C08L77/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/104 ,  C09D11/107 ,  C09D11/108 ,  C09D11/324

Abstract: The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.

公开(公告)号：US20250018649A1

公开(公告)日：2025-01-16

申请号：US18713978

申请日：2021-12-03

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Alay Yemane ,  Greg Scott Long

IPC: B29C64/30 ,  B29C64/295 ,  B29C71/00 ,  B29C71/02 ,  B29K77/00 ,  B33Y40/20

Abstract: Examples of the present disclosure are directed toward methods and system for reducing surface roughness of a cured three-dimensional (3D) printed object using a localized heat source. An example method includes applying a liquid solvent to the cured 3D printed object and heating the cured 3D printed object with the liquid solvent applied thereto to a temperature below a melting point of the cured 3D printed object using a localized heat source to reduce a surface roughness of the cured 3D printed object as compared to the cured 3D printed object prior to the application of heat.

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：US20240399672A1

公开(公告)日：2024-12-05

申请号：US18697694

申请日：2021-10-12

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff

IPC: B29C65/48 ,  B29K77/00 ,  B29K105/00 ,  B29L31/50 ,  B33Y10/00 ,  B33Y40/20

Abstract: In an example method, benzyl alcohol is applied to a surface of a first polyamide-based 3D object, a surface of a second polyamide-based 3D object, or both the surface of the firs polyamide-based 3D object and the surface of the second polyamide-based 3D object. Each of the first and second polyamide-based 3D objects is independently selected from the group consisting of a second polyamide 3D object and a polyamide elastomer 3D object. The first polyamide-based 3D object has a different chemical composition than the second polyamide-based 3D object. After the benzyl alcohol is applied, the surface of the first polyamide-based 3D object is directly contacted with the surface of the second polyamide-based 3D object. While the surfaces are in contact, the first polyamide-based 3D object and the second polyamide-based 3D object are exposed to a predetermined temperature for a predetermined time to weld the surfaces together.

公开(公告)号：US12091566B2

公开(公告)日：2024-09-17

申请号：US17799699

申请日：2020-03-04

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Jacob Wright ,  Graciela Emma Negri Jimenez

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/106 ,  C09D11/322 ,  C09D11/38 ,  B29K105/00 ,  B29K105/24

CPC classification number: C09D11/38 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/106 ,  C09D11/322 ,  B29K2105/0032 ,  B29K2105/24 ,  B29K2105/251

Abstract: This disclosure describes hydrogel three-dimensional printing kits, methods of three-dimensional printing hydrogels, and hydrogel three-dimensional printing systems. In one example, a hydrogel three-dimensional printing kit can include a particulate build material, a crosslinking agent, a whitening agent, and a coloring agent. The particulate build material can include a polyhydroxylated swellable polymer. The crosslinking agent can include water and a crosslinker that is reactive with hydroxyl groups of the polyhydroxylated swellable polymer to crosslink the polyhydroxylated swellable polymer. The whitening agent can include water and a dispersed white pigment. The coloring agent can include water and a colorant.

公开(公告)号：US12070899B2

公开(公告)日：2024-08-27

申请号：US17637658

申请日：2019-10-23

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

Inventor： Shannon Reuben Woodruff ,  Emre Hiro Discekici ,  Graciela Emma Negri Jimenez ,  Alay Yemane

IPC: B29C64/165 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B29K105/00 ,  B29K505/08

CPC classification number: B29C64/165 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B29K2105/0032 ,  B29K2105/005 ,  B29K2105/251 ,  B29K2505/08

Abstract: This disclosure describes three-dimensional printing kits, methods of making three-dimensional printed objects, and systems for three-dimensional printing. In one example, a three-dimensional printing kit can include a powder bed material and a fusing agent to selectively apply to the powder bed material. The powder bed material can include polymer particles and a redox-active inorganic salt mixed with the polymer particles. The fusing agent can include water and an electromagnetic radiation absorber, wherein the electromagnetic radiation absorber absorbs electromagnetic radiation energy and converts the electromagnetic radiation energy to heat.

公开(公告)号：US20240240050A1

公开(公告)日：2024-07-18

申请号：US18289817

申请日：2021-06-02

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

Inventor： Emre Hiro Discekici ,  Greg Scott Long ,  Dennis J. Schissler ,  Shannon Reuben Woodruff

IPC: C09D177/04 ,  B29C64/165 ,  B29K21/00 ,  B29K23/00 ,  B29K77/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08K3/04 ,  C08K5/21 ,  C09D7/61 ,  C09D7/63

CPC classification number: C09D177/04 ,  B33Y70/00 ,  C09D7/61 ,  C09D7/63 ,  B29C64/165 ,  B29K2021/003 ,  B29K2023/12 ,  B29K2077/00 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y30/00 ,  C08K3/04 ,  C08K5/21

Abstract: A three-dimensional printing kit can include a polymer build material and a fusing agent. The polymer build material can include from about 80 wt % to about 100 wt % polymeric particles. The fusing agent can include an aqueous liquid vehicle, an electromagnetic radiation absorber to absorb radiation energy and convert the radiation energy to heat, and an endothermic decomposition compound that can undergo thermal decomposition at a temperature ranging from about 60° C. to about 400° C.

公开(公告)号：US20230050446A1

公开(公告)日：2023-02-16

申请号：US17788350

申请日：2020-01-09

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

Inventor： Emre Hiro Discekici ,  Graciela Emma Negri Jimenez ,  Shannon Reuben Woodruff ,  Jason Christopher Butler

IPC: B29C64/165

Abstract: The present disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of making three-dimensional printed objects. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and an antioxidant agent. The fusing agent can include water and an electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The antioxidant agent can include water and a dispersion of a secondary antioxidant.

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.