公开(公告)号：US20190382429A1

公开(公告)日：2019-12-19

申请号：US16475534

申请日：2017-04-17

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

Inventor： Adekunle Olubummo ,  Aja Hartman ,  Lihua Zhao

IPC: C07F15/04 ,  B33Y70/00 ,  B29C64/165 ,  B33Y10/00

Abstract: Fusing agent(s) are described herein. In an example, a fusing agent can comprise a metal bis(dithiolene) complex, at least one electron donor compound, a polar aprotic solvent, and water. In some examples, the at least one electron donor compound can comprise at least one hindered amine light stabilizer compound. In some examples, the polar aprotic solvent can be selected from the group consisting of 1-methyl-2-pyrrolidone, 2-pyrrolidone, 1-(2-hydroxyethyl)-2-pyrrolidone, dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and a combination thereof.

公开(公告)号：US12145315B2

公开(公告)日：2024-11-19

申请号：US17779729

申请日：2019-12-11

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

Inventor： Aja Hartman ,  John Samuel Dilip Jangam ,  Wei Huang ,  Thomas Craig Anthony ,  Gary J Dispoto ,  Lihua Zhao

IPC: B29C64/264 ,  B29C64/153 ,  B29C64/255 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10

Abstract: The present disclosure relates to a three-dimensional printing kit comprising: a powder bed material comprising polymer particles; a fusing agent comprising a radiation absorber and a liquid carrier; and a magnetic marking agent comprising magnetic nanoparticles, a humectant and a liquid carrier, wherein the concentration of magnetic nanoparticles is 5 to 70 weight % based on the total weight of the magnetic agent. The present disclosure also relates to a method of three-dimensional (3D) printing a 3D printed object. The method comprises: selectively applying a magnetic marking agent onto powder bed material, wherein the powder bed material comprises polymer particles, and wherein the magnetic marking agent comprises magnetic nanoparticles and a liquid carrier; selectively fusing the powder bed material, such that the magnetic nanoparticles are incorporated in the 3D printed object in a predetermined arrangement that forms a detectable marker in the 3D printed object.

公开(公告)号：US12103073B2

公开(公告)日：2024-10-01

申请号：US17311421

申请日：2019-10-11

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

Inventor： Aja Hartman ,  John Samuel Dilip Jangam ,  Lihua Zhao

IPC: B22F10/14 ,  B22F1/00 ,  B22F1/10 ,  B22F1/105 ,  B22F3/10 ,  B33Y10/00 ,  B33Y70/00

CPC classification number: B22F10/14 ,  B22F1/09 ,  B22F1/105 ,  B22F3/1017 ,  B22F1/10 ,  B22F2201/013 ,  B22F2207/20 ,  B22F2999/00 ,  B33Y10/00 ,  B33Y70/00

Abstract: A kit for three-dimensional printing a metal object is described. The kit comprises a build material and a shaping composition. The build material comprises metallic particles. The shaping composition comprises a metallic mixture for forming an intermetallic compound with the metallic particles and/or that is exothermically reactive.

公开(公告)号：US20240116242A1

公开(公告)日：2024-04-11

申请号：US18527120

申请日：2023-12-01

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

Inventor： Adekunle Olubummo ,  Lihua Zhao ,  Aja Hartman

IPC: B29C64/165 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08K5/17 ,  C08L63/00 ,  C08L77/04

CPC classification number: B29C64/165 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08K5/17 ,  C08L63/00 ,  C08L77/04 ,  B29K2063/00

Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition, an epoxy agent to be applied to at least a portion of the 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 build material composition includes a polyamide having an amino functional group. The epoxy agent includes an epoxy having an epoxide functional group to react with the amino functional group of the polyamide in the at least the portion. The fusing agent includes an energy absorber.

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：US11760010B2

公开(公告)日：2023-09-19

申请号：US17561425

申请日：2021-12-23

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

Inventor： Yan Zhao ,  Kristopher J. Erickson ,  Aja Hartman ,  Lihua Zhao ,  Sterling Chaffins ,  Kevin P. DeKam

IPC: B29C64/165 ,  B33Y10/00 ,  B29C64/112 ,  B29C64/393 ,  B33Y70/10 ,  B33Y70/00 ,  B33Y30/00 ,  B29C64/20 ,  B33Y50/02 ,  B29K77/00 ,  B29K105/00 ,  B29K105/16 ,  B29K505/14 ,  B29K507/04

CPC classification number: B29C64/165 ,  B29C64/112 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y70/10 ,  B29C64/20 ,  B29C64/393 ,  B29K2077/00 ,  B29K2105/005 ,  B29K2105/0023 ,  B29K2105/0032 ,  B29K2105/162 ,  B29K2505/14 ,  B29K2507/04 ,  B29K2995/0005 ,  B33Y30/00 ,  B33Y50/02

Abstract: In an example method for forming three-dimensional (3D) printed electronic parts, a build material is applied. An electronic agent is selectively applied in a plurality of passes on a portion of the build material. A fusing agent is also selectively applied on the portion of the build material. The build material is exposed to radiation in a plurality of heating events. During at least one of the plurality of heating events, the portion of the build material in contact with the fusing agent fuses to form a region of a layer. The region of the layer exhibits an electronic property. An order of the plurality of passes, the selective application of the fusing agent, and the plurality of heating events is controlled to control a mechanical property of the layer and the electronic property of the region.

公开(公告)号：US20230101544A1

公开(公告)日：2023-03-30

申请号：US18072530

申请日：2022-11-30

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

Inventor： Aja Hartman ,  Krzysztof Nauka ,  Lihua Zhao

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/209 ,  B29C64/393

Abstract: According to an example, a three-dimensional (3D) printer may include a delivery device to deposit a light absorbing agent onto selected areas of a layer of build material particles, in which the light absorbing agent absorbs light having wavelengths that are around the ultraviolet wavelength range. The 3D printer may also include a light source to apply light onto the selectively deposited light absorbing agent and the layer of the build material particles, in which the light absorbing agent absorbs light around the ultraviolet wavelength range from the applied light and becomes heated to a temperature that causes the build material particles upon which the light absorbing agent has been deposited to melt and to fuse together following cessation of the application of the light.

公开(公告)号：US11591494B2

公开(公告)日：2023-02-28

申请号：US17052603

申请日：2019-03-18

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

Inventor： Adekunle Olubummo ,  Kyle Wycoff ,  Aja Hartman ,  Lihua Zhao

IPC: B33Y80/00 ,  C09D177/02 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165 ,  C08K3/04 ,  C08K5/00 ,  C09D7/63 ,  C08L77/02 ,  B29K63/00 ,  B29K101/12 ,  B29K105/16

Abstract: The present disclosure is drawn to 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 first reactive agent can include a first liquid vehicle and an epoxy compound having multiple epoxide groups. The second reactive agent can include a second liquid vehicle and an amine compound having multiple amino groups.

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.