公开(公告)号：US20220348731A1

公开(公告)日：2022-11-03

申请号：US17245501

申请日：2021-04-30

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

Inventor： Emre Discekici ,  Shannon R. Woodruff ,  Alay Yemane

IPC: C08J7/12 ,  C08K3/04 ,  B29C64/165 ,  B29C64/35 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00

Abstract: The present disclosure includes a three-dimensional printed object comprising a fusing agent, a polymeric build material and a treatment agent further comprising water or an aqueous solution of methyl 4-hydroxybenzoate. It further includes a method of enhancing mechanical properties of said three-dimensional printed article as well as a method of creating a treated three-dimensional printed object.

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：US20240246288A1

公开(公告)日：2024-07-25

申请号：US18289556

申请日：2021-05-10

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

Inventor： Emre Hiro Discekici ,  Geoffrey Schmid ,  Alay Yemane

IPC: B29C64/165 ,  B29C64/188 ,  B29C64/264 ,  B29C71/02 ,  B29K21/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

CPC classification number: B29C64/165 ,  B29C64/188 ,  B29C64/264 ,  B29C71/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20 ,  B29C2071/022 ,  B29K2021/003 ,  B29K2995/0094

Abstract: A three-dimensional printing system can include a build material including from about 95 wt % to 100 wt % of thermoplastic elastomer particles having a D50 particle size from about 2 μm to about 150 μm, and a printhead fluidly coupled to or fluidly coupleable to a fusing agent to selectively and iteratively eject the fusing agent onto successive placed individual layers thereof. The fusing agent can include water and a radiation absorber. The three-dimensional printing system can also include a radiant energy source positioned to expose the individual layers of the build material to radiation energy to selectively fuse the thermoplastic elastomer particles in contact with the radiation absorber to iteratively form a three-dimensional object including multiple layers of fused thermoplastic elastomer, and a heating device to heat the three-dimensional object to a temperature sufficient that layer-to-layer fusion at an interior location of the three-dimensional object is enhanced.

公开(公告)号：US20230081047A1

公开(公告)日：2023-03-16

申请号：US17799768

申请日：2020-03-11

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Mariya Gelman ,  Jesiska Tandy ,  Alay Yemane

IPC: C08K5/25 ,  B33Y70/00 ,  B29C64/165 ,  B29C64/357 ,  B33Y40/00 ,  B29C64/314 ,  B33Y10/00

Abstract: A three-dimensional printing kit can include a polymeric build material including from about 80 wt % to 100 wt % polymer particles having an average particle size from about 10 μm to about 150 μm and from about 0.01 wt % to about 2 wt % dihydrazide, and a fusing agent formulation including an aqueous liquid vehicle and a radiation absorber.

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.

公开(公告)号：US20220154023A1

公开(公告)日：2022-05-19

申请号：US17297073

申请日：2019-08-09

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Alay Yemane

IPC: C09D11/34 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B29C64/165 ,  B33Y40/10 ,  B29C64/314 ,  B29B7/90 ,  C09D11/037 ,  C09D11/102 ,  C09D11/322

Abstract: This disclosure describes three-dimensional printing kits, methods, and systems for three-dimensional printing with directionally-dependent reflective particles. 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 directionally-dependent reflective particles. The directionally-dependent reflective particles can be chemically and thermally stable at a melting point temperature 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.

公开(公告)号：US11833751B2

公开(公告)日：2023-12-05

申请号：US17294445

申请日：2019-06-10

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

Inventor： Jesiska Tandy ,  Stanley J. Kozmiski ,  Alay Yemane

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y30/00 ,  B29C64/264 ,  B29K105/00 ,  B29K309/08

CPC classification number: B29C64/165 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29K2105/005 ,  B29K2309/08 ,  B29K2995/0046 ,  B29K2995/0063 ,  B29K2995/0077 ,  B29K2995/0097

Abstract: A materials kit for 3D printing can include a powder bed material including from about 60 wt % to 100 wt % composite fibers having an average aspect ratio from about 3:1 to about 30:1 and a fusing agent including an energy absorber to absorb electromagnetic radiation to produce heat. The composite fibers can include glass fibers coated with an encapsulating polymer, wherein the glass fibers can be included at from about 5 wt % to about 40 wt % based on the total weight of the powder bed material.

公开(公告)号：US11679553B2

公开(公告)日：2023-06-20

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 ,  B33Y70/10

CPC classification number: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y70/10 ,  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：US20230139495A1

公开(公告)日：2023-05-04

申请号：US17910972

申请日：2020-04-03

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Alay Yemane

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

Abstract: A three-dimensional printing kit can include a powder bed material including from about 80 wt% to about 99.5 wt% thermoplastic elastomeric particles having a D50 particle size from about 2 µm to about 150 µm and from about 0.5 wt% to about 6 wt% C12-C24 straight-chain alkyl carboxylate. The three-dimensional printing kit can also include a fusing agent including water, organic co-solvent, and a radiation absorber to generate heat from absorbed electromagnetic radiation.

公开(公告)号：US20230020902A1

公开(公告)日：2023-01-19

申请号：US17786614

申请日：2020-01-10

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

Inventor： Emre Hiro Discekici ,  Carolin Fleischmann ,  Jesiska Tandy ,  Shannon Reuben Woodruff ,  Alay Yemane

IPC: C09D11/102 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y30/00 ,  B29C64/165 ,  C09D11/037 ,  C09D11/033

Abstract: A three-dimensional printing kit can include a fusing agent including water and a radiation absorber and a build material that can include from 95 wt % to 100 wt % of annealed polyether polyamide copolymer particles that can have a D50 particle size from about 2 μm to about 150 μm.