公开(公告)号：US20240042680A1

公开(公告)日：2024-02-08

申请号：US18379071

申请日：2023-10-11

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

Inventor： Paul Olubummo ,  Kristopher J. Erickson ,  Aja Hartman ,  Lihua Zhao

IPC: B29C64/124 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/314 ,  B29C64/165 ,  B29C64/218 ,  B33Y40/10

CPC classification number: B29C64/124 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/314 ,  B29C64/165 ,  B29C64/218 ,  B33Y40/10

Abstract: In an example, a three-dimensional (3D) printed part comprises a plurality of fused build material layers including exterior layers and interior layers. At least some of the interior layers include a composite portion having a miscible solid physically bonded to an amide functionality or an amine functionality of the build material. The miscible solid is a solid at a room temperature ranging from about 18° C. to about 25° C.

公开(公告)号：US11414561B2

公开(公告)日：2022-08-16

申请号：US16488662

申请日：2017-10-24

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

Inventor： Paul Olubummo ,  Lihua Zhao ,  Aja Hartman ,  Howard S. Tom

IPC: C09D11/38 ,  B33Y70/00 ,  B29C64/314 ,  B33Y40/10 ,  C07F15/04 ,  C09D11/033

Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.

公开(公告)号：US11008479B2

公开(公告)日：2021-05-18

申请号：US16076918

申请日：2017-02-06

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

Inventor： Paul Olubummo ,  Lihua Zhao ,  Kristopher J. Erickson ,  Howard S. Tom ,  Aja Hartman

IPC: C09D11/54 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/165 ,  B29C64/393 ,  C09D11/033 ,  C09D11/037 ,  C09D11/30 ,  B33Y50/02 ,  B33Y70/00 ,  B29C64/112 ,  B29C64/20 ,  C09D11/101 ,  C09D11/102 ,  C09D11/328 ,  C09D11/38

Abstract: An example of a fusing agent includes a tetraphenyldiamine-based dye, alkyldiphenyloxide disulfonate, 1-methyl-2-pyrrolidone, and a balance of water. The fusing agent excludes a strong reducing species. The fusing agent may be incorporated into a three-dimensional printing method or a three-dimensional printing system. In an example of the three-dimensional printing method, a polymeric or polymeric composite build material is applied. The fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The polymeric or polymeric composite build material is exposed to electromagnetic radiation to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer.

公开(公告)号：US11772163B2

公开(公告)日：2023-10-03

申请号：US16606885

申请日：2018-02-09

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

Inventor： Krzysztof Nauka ,  Paul Olubummo

IPC: B22F10/14 ,  B33Y10/00 ,  B33Y30/00 ,  B22F12/17 ,  B22F12/43 ,  B33Y70/10 ,  B22F10/34 ,  B22F1/052

CPC classification number: B22F10/14 ,  B22F10/34 ,  B22F12/17 ,  B22F12/43 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B22F1/052 ,  B22F2304/05 ,  B22F2304/10 ,  B22F2998/10 ,  B22F10/14 ,  B22F3/10

Abstract: The present disclosure is drawn to a three-dimensional printing system can include a powder bed material, including from 80 wt % to 100 wt % metal particles having a D50 particle size distribution value ranging from 5 μm to 75 μm and a powder bed support substrate for receiving the powder bed material. The system can also include a fluid ejector operable to digitally deposit a thermally sensitive binder fluid onto a selected portion of the powder bed material on the powder bed support substrate. The thermally sensitive binder fluid can include water, a reducible metal compound, and a thermally activated reducing agent. A light source can also be present to generate a pulse energy sufficient to cause the thermally activated reducing agent to reduce the reducible metal compound and bind metal particles together to form a green three-dimensional part.

公开(公告)号：US11577454B2

公开(公告)日：2023-02-14

申请号：US16605140

申请日：2018-03-15

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

Inventor： Kristopher J. Erickson ,  Paul Olubummo ,  Aja Hartman ,  Lihua Zhao

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/291 ,  C08K3/04 ,  B29K105/00

Abstract: A three-dimensional printing system can include polymeric build material and jettable fluid(s). The polymeric build material can have an average particle size from 20 μm to 150 μm, a first melt viscosity, and a melting temperature from 75° C. to 350° C. In one example, the jettable fluid can include water, from 0.1 wt % to 10 wt % of electromagnetic radiation absorber, and from 10 wt % to 35 wt % of an organic solvent plasticizer. Contacting a first portion of a layer of the polymeric build material with the jettable fluid can provide an organic solvent plasticizer loading from 2 wt % to 10 wt % based on the polymeric build material content. The first melt viscosity of the polymeric build material at the first portion can be reduced and the melting temperature of the polymeric build material at the first portion can be decreased by 3° C. to 15° C.

公开(公告)号：US11801631B2

公开(公告)日：2023-10-31

申请号：US16080221

申请日：2017-06-28

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

Inventor： Paul Olubummo ,  Kristopher J. Erickson ,  Aja Hartman ,  Lihua Zhao

IPC: B29C64/124 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/314 ,  B29C64/165 ,  B29C64/218 ,  B33Y40/10

CPC classification number: B29C64/124 ,  B29C64/165 ,  B29C64/218 ,  B29C64/314 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y70/00

Abstract: In an example, a three-dimensional (3D) printed part comprises a plurality of fused build material layers including exterior layers and interior layers. At least some of the interior layers include a composite portion having a miscible solid physically bonded to an amide functionality or an amine functionality of the build material. The miscible solid is a solid at a room temperature ranging from about 18° C. to about 25° C.

公开(公告)号：US11760894B2

公开(公告)日：2023-09-19

申请号：US17859850

申请日：2022-07-07

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

Inventor： Paul Olubummo ,  Lihua Zhao ,  Aja Hartman ,  Howard S. Tom

IPC: C09D11/38 ,  B33Y70/00 ,  B29C64/314 ,  B33Y40/10 ,  C07F15/04 ,  C09D11/033

CPC classification number: C09D11/38 ,  B29C64/314 ,  B33Y40/10 ,  B33Y70/00 ,  C07F15/045 ,  C09D11/033

Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.

公开(公告)号：US20220372316A1

公开(公告)日：2022-11-24

申请号：US17859850

申请日：2022-07-07

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

Inventor： Paul Olubummo ,  Lihua Zhao ,  Aja Hartman ,  Howard S. Tom

IPC: C09D11/38 ,  B33Y70/00 ,  B29C64/314 ,  B33Y40/10 ,  C07F15/04 ,  C09D11/033

Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.

公开(公告)号：US20210323066A1

公开(公告)日：2021-10-21

申请号：US16603366

申请日：2018-06-05

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

Inventor： Paul Olubummo

IPC: B22F10/14 ,  B22F1/00 ,  B22F12/43 ,  B22F12/53 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

Abstract: A material set can include a binder fluid and a powder bed material. The binder fluid can include an iron oxide nanoparticle, a dispersing ligand, a reducing agent, and an aqueous liquid vehicle. The powder bed material can include from 80 wt % to 100 wt % metal particles that can have a D50 particle size distribution value ranging from 5 μm to 75 μm.

公开(公告)号：US20210284858A1

公开(公告)日：2021-09-16

申请号：US16488662

申请日：2017-10-24

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

Inventor： Paul Olubummo ,  Lihua Zhao ,  Aja Hartman ,  Howard S. Tom

IPC: C09D11/38 ,  C09D11/033 ,  C07F15/04 ,  B33Y70/00 ,  B33Y40/10 ,  B29C64/314

Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.