公开(公告)号：US20220274327A1

公开(公告)日：2022-09-01

申请号：US17637473

申请日：2019-10-22

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

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

IPC: B29C64/165 ,  B29C64/295

Abstract: A multi-fluid kits for three-dimensional printing can include a fusing agent and a tinted anti-coalescing agent. The fusing agent can include water and an electromagnetic radiation absorber that absorbs radiation energy and converts the radiation energy to heat. The tinted anti-coalescing agent can include an aqueous liquid vehicle, a colored dye dissolved in the aqueous liquid vehicle, and a polyelectrolyte. The polyelectrolyte can have a weight average molecular weight from about 1,000 Mw to about 8,000 Mw, the polyelectrolyte can be water-absorbent at a water to polyelectrolyte weight ratio from about 2:1 to about 1,000:1, and about 90 wt % to 100 wt % of the polyelectrolyte can be dissolved in the aqueous liquid vehicle.

公开(公告)号：US11384241B2

公开(公告)日：2022-07-12

申请号：US16499510

申请日：2018-01-26

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

Inventor： Graciela Emma Negri Jimenez ,  Alexey S Kabalnov ,  Jacob Wright

IPC: B33Y10/00 ,  B29C64/165 ,  B33Y80/00 ,  C08L77/06 ,  B33Y70/00 ,  B29K77/00 ,  B29K105/00

Abstract: According to examples described herein, methods, compositions, and parts comprising an antistatic agent are described. According to one example, a method of three-dimensional printing can comprise: (i) a layer of build material being deposited; (ii) a first fusing agent being selectively applied on the build material, wherein the first fusing agent can comprise at least one first antistatic agent; and (iii) repetition of (i) and (ii) at least once to form a core of a three-dimensional part.

公开(公告)号：US12251874B2

公开(公告)日：2025-03-18

申请号：US17293266

申请日：2019-07-15

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

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

IPC: B29C64/165 ,  B22F10/14 ,  B29C64/153 ,  B33Y10/00 ,  B33Y70/00 ,  B29K105/00

Abstract: This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent, a first reactive agent, and a second reactive 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 first reactive agent can include water and a dissolved first pigment reactant. The second reactive agent can include water and a dissolved second pigment reactant. The second pigment reactant can be reactive with the first pigment reactant to form a water-insoluble pigment.

公开(公告)号：US12240169B2

公开(公告)日：2025-03-04

申请号：US17777802

申请日：2019-12-13

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

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

IPC: B29C64/165 ,  B29C64/188 ,  B29C64/30 ,  B29C64/357 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  B33Y99/00 ,  C09D11/322 ,  C09D11/38 ,  C09D11/40 ,  C09D11/50 ,  G01N21/78 ,  G01N21/91 ,  G01N21/94 ,  B29K77/00 ,  B29K105/00

Abstract: This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of testing powder bed material for contamination. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detector solution. The fusing agent can include water, an electromagnetic radiation absorber, and a first pigment reactant. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The detector solution can include water and a second pigment reactant. The second pigment reactant can be reactive with the first pigment reactant to form a colored pigment.

公开(公告)号：US12023861B2

公开(公告)日：2024-07-02

申请号：US17298643

申请日：2019-09-18

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

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

IPC: B29C71/02 ,  B29C64/165 ,  B29C64/188 ,  B29C71/04 ,  B33Y10/00 ,  B33Y70/00

CPC classification number: B29C64/165 ,  B29C64/188 ,  B33Y10/00 ,  B33Y70/00 ,  B29K2995/0092

Abstract: In an example of a method for three-dimensional (3D) printing, a polymeric build material is applied to form a build material layer. A fusing agent is selectively applied, based on a 3D object model, onto the build material layer to form a patterned portion. A hydrophilic agent is selectively applied, based on the 3D object model, onto at least a portion of the patterned portion. The hydrophilic agent includes from 1 wt % to 12 wt % of a hydrophilic polymer dissolved in an aqueous liquid vehicle, wherein the hydrophilic polymer has a molar mass ranging from 1000 g/mol to 12,000 g/mol and is water-absorbent at a water to hydrophilic polymer weight ratio from 2:1 to 1000:1. The build material layer is exposed to energy to selectively coalesce the patterned portion and form a 3D object layer having a hydrophilic portion.

公开(公告)号：US11752692B2

公开(公告)日：2023-09-12

申请号：US17637478

申请日：2019-10-22

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

Inventor： Emre Hiro Discekici ,  Alexey S. Kabalnov ,  Graciela Emma Negri Jimenez ,  Shannon Reuben Woodruff

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B22F10/16 ,  B29K505/02 ,  B29K505/14 ,  B22F12/13 ,  B22F1/054

CPC classification number: B29C64/165 ,  B22F10/16 ,  B22F1/054 ,  B22F1/056 ,  B22F12/13 ,  B29K2505/02 ,  B29K2505/14 ,  B29K2995/0003 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B22F2999/00 ,  B22F1/054 ,  B22F10/10 ,  B22F2003/1052 ,  B22F2999/00 ,  B22F1/054 ,  B22F1/056 ,  B22F10/10 ,  B22F2003/1052

Abstract: This disclosure describes three-dimensional printing kits, methods, and systems for three-dimensional printing with phosphorescent pigments. In one example, a three-dimensional printing kit can include a powder bed material and a low-tint fusing agent. The powder bed material can include polymer particles and phosphorescent pigment particles mixed with the polymer particles. The low-tint fusing agent can include water and an electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the absorbed radiation energy to heat.

公开(公告)号：US20230219291A1

公开(公告)日：2023-07-13

申请号：US17997164

申请日：2020-04-30

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

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

IPC: B29C64/165 ,  B33Y70/00 ,  C09D11/328 ,  C09D11/38 ,  C09D11/023 ,  C09D11/037 ,  C09D11/033 ,  C09D11/106

CPC classification number: B29C64/165 ,  B33Y70/00 ,  C09D11/328 ,  C09D11/38 ,  C09D11/023 ,  C09D11/037 ,  C09D11/033 ,  C09D11/106 ,  B29K2105/24

Abstract: Hydrogel three-dimensional printing kits, methods of three-dimensional printing and three-dimensional printed hydro-gels are described. In one example, a three-dimensional printing kit can comprise a particulate build material, a crosslinking agent and a structural modifier. The particulate build material may comprise a polyhydroxylated polymer having hydroxyl groups. The crosslinking gent is for crosslinking the polyhydroxylated polymer by a reaction with the hydroxyl groups. The structural modifier can have a plurality of functional groups for forming a network within the hydrogel, and where the structural modifier may have a reactivity that is chemically orthogonal to the reaction with the hydroxyl groups for crosslinking the polyhydroxylated polymer.

公开(公告)号：US20220363923A1

公开(公告)日：2022-11-17

申请号：US17298811

申请日：2019-08-08

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

Inventor： Graciela Emma Negri Jimenez ,  Emre Hiro Discekici ,  Shannon Rueben Woodruff

IPC: C09D11/101 ,  C09D11/102 ,  C09D11/033 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165

Abstract: A multi-fluid kit for three-dimensional printing can include a fusing agent and a detailing agent. The fusing agent can include water and a radiation absorber. The radiation absorber absorbs radiation energy and converts the radiation energy to heat. The detailing agent includes a lipophilic phase discontinuously dispersed within an aqueous phase by a surfactant. The lipophilic phase includes an organosilane having a central silicon atom coupled to a C6 to C24 aliphatic or alicyclic hydrocarbon and multiple hydrolyzable groups. The organosilane is present in the detailing agent at from about 1 wt % to about 20 wt %.

公开(公告)号：US20220314534A1

公开(公告)日：2022-10-06

申请号：US17633641

申请日：2019-10-11

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

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

IPC: B29C64/165 ,  C09D11/107 ,  C09D11/102 ,  C09D11/023 ,  C09D183/04 ,  B33Y70/00 ,  B33Y10/00

Abstract: The present disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent, a hydrophobizing agent, and a hydrophilizing agent. The fusing agent can include water and an electromagnetic radiation absorber, wherein the electromagnetic radiation absorber absorbs radiation energy and converts the radiation energy to heat. The hydrophobizing agent can include water and a hydrophobic additive including a first polymer having a hydrophobic group, a monomer that is polymerizable to form a first polymer having a hydrophobic group, or a combination thereof. The hydrophilizing agent can include water and a hydrophilic additive including a second polymer having a hydrophilic group.

公开(公告)号：US20220267630A1

公开(公告)日：2022-08-25

申请号：US17629009

申请日：2019-09-06

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

Inventor： Erica Fung ,  Rachael Donovan ,  Jesiska Tandy ,  Shannon Reuben Woodruff ,  Emre Hiro Discekici ,  Graciela Emma Negri Jimenez ,  Alay Yemane

IPC: C09D11/50 ,  C09D11/322 ,  C09D11/328 ,  C09D11/102 ,  C09D11/037 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00

Abstract: 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 thermochromic additive. The thermochromic additive can be chemically stable at a melting point temperature of the polymer particles, and the thermochromic additive can exhibit a color change at a color transition temperature that is below the melting point of the polymer particles. The fusing agent can include water and a radiation absorber to absorb radiation energy and convert the radiation energy to heat.