公开(公告)号：US11292189B2

公开(公告)日：2022-04-05

申请号：US16488715

申请日：2017-11-17

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

Inventor： Andrew Van Brocklin ,  Kevin P. DeKam ,  Vladek Kasperchik ,  Johnathon Holroyd ,  Douglas Pederson ,  Sterling Chaffins

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

Abstract: In an example of a method for three-dimensional (3D) printing, a polymeric or polymeric composite build material is applied. A dielectric agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The dielectric agent includes a dielectric material having an effective relative permittivity (εr) value ranging from 1.1 to about 10,000. A fusing agent is selectively applied on the at least the portion of the polymeric or polymeric composite build material, and the polymeric or polymeric composite build material is exposed to radiation to fuse the at least the portion of the polymeric or polymeric composite build material to form a region of a layer of a 3D part. The region exhibits a dielectric property, a piezoelectric property, or a combination thereof.

公开(公告)号：US11167482B2

公开(公告)日：2021-11-09

申请号：US17047455

申请日：2018-10-19

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

Inventor： Sterling Chaffins ,  David Tucker ,  Kevin P. DeKam ,  David C. Woodlock ,  Lee Dockstader

IPC: B29C64/188 ,  B29C64/165 ,  B33Y40/20 ,  C25D5/56 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153 ,  B33Y30/00 ,  B29K105/00

Abstract: The present disclosure is drawn to 3D printing kits and methods of making 3D printed articles. In one example, a 3D printing kit can include a powder bed material, a fusible fluid, and an activator fluid. The powder bed material can include polymer particles. The fusible fluid can include a radiation absorber. The fusible fluid can be to selectively apply to the powder bed material. The activator fluid can include a non-conductive electroless metal plating activator. The activator fluid can also be to selectively apply to the powder bed material.

公开(公告)号：US11090862B2

公开(公告)日：2021-08-17

申请号：US16066809

申请日：2016-04-15

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam ,  Cassady Sparks Roop

IPC: B29C64/153 ,  G01B1/00 ,  G01B7/16 ,  B29C64/307 ,  B29C64/295 ,  G01L1/22

Abstract: A strain sensor can include a resistor, a first electrical contact at a first end of the resistor, and a second electrical contact at a second end of the resistor. The resistor can be formed of a matrix of sintered elemental transition metal particles interlocked with a matrix of fused thermoplastic polymer particles.

公开(公告)号：US20210229358A1

公开(公告)日：2021-07-29

申请号：US17233020

申请日：2021-04-16

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam

IPC: B29C64/30 ,  B33Y80/00 ,  B29C64/165 ,  B33Y40/10 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153 ,  H05K1/09 ,  H05K3/10

Abstract: In a three-dimensional printing method example, a pre-treatment coating is formed on a part precursor by applying and drying, alternatingly: a polycation solution including a chloride ion and a polyanion solution including a sodium ion to form at least two layers. An ink is selectively deposited on the pre-treatment coating.

公开(公告)号：US11001000B2

公开(公告)日：2021-05-11

申请号：US15763231

申请日：2015-10-21

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam

IPC: B05D1/02 ,  B05D1/04 ,  B05D1/18 ,  B29C71/02 ,  B29C71/04 ,  C08J7/04 ,  C09D11/00 ,  C09D11/02 ,  C09D11/03 ,  C09D11/033 ,  C09D11/037 ,  C09D11/10 ,  C09D11/101 ,  C09D11/30 ,  C09D11/32 ,  C09D11/322 ,  C09D11/328 ,  B29C64/30 ,  B33Y80/00 ,  B29C64/165 ,  B33Y40/10 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153 ,  H05K1/09 ,  H05K3/10 ,  B05D7/00 ,  B29K77/00

Abstract: In a three-dimensional printing method example, a pre-treatment coating is formed on a part precursor by applying and drying, alternatingly: a polycation solution including a chloride ion and a polyanion solution including a sodium ion to form at least two layers. An ink is selectively deposited on the pre-treatment coating.

公开(公告)号：US20190134898A1

公开(公告)日：2019-05-09

申请号：US16098082

申请日：2016-07-27

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 ,  B29C64/112 ,  B29C64/393 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00

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：US20190126541A1

公开(公告)日：2019-05-02

申请号：US16073585

申请日：2016-04-20

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam ,  Cassady S. Roop ,  Bret McHuron-Guss

IPC: B29C64/165 ,  B29C64/20 ,  B33Y30/00 ,  B33Y70/00 ,  B33Y80/00

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing, 3-dimensional printing systems, and 3-dimensional printed parts. A material set can include a thermoplastic polymer powder having an average particle size from 20 μm to 100 μm, an x-ray contrast ink including a jettable x-ray contrast agent, and a fusing ink. The fusing ink can include a fusing agent capable of absorbing electromagnetic radiation to produce heat.

公开(公告)号：US20180272607A1

公开(公告)日：2018-09-27

申请号：US15763231

申请日：2015-10-21

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam

IPC: B29C64/30 ,  B29C64/153 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  H05K3/10 ,  H05K1/09

CPC classification number: B29C64/30 ,  B29C64/153 ,  B29C64/165 ,  B29K2077/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  H05K1/092 ,  H05K3/10

Abstract: In a three-dimensional printing method example, a pre-treatment coating is formed on a part precursor by applying and drying, alternatingly: a polycation solution including a chloride ion and a polyanion solution including a sodium ion to form at least two layers. An ink is selectively deposited on the pre-treatment coating.

公开(公告)号：US12214549B2

公开(公告)日：2025-02-04

申请号：US18349102

申请日：2023-07-07

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

Inventor： Kevin P. DeKam ,  Sterling Chaffins ,  Cassady Sparks Roop

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D5/23

Abstract: The present disclosure is drawn to 3D printing kits, multi-fluid kits for 3D printing, and methods of making 3D printed articles. In one example, a 3D printing kit can include a powder bed material, a fusible fluid, and a magnetic fluid. The powder bed material can include polymer particles. The fusible fluid can include water and a radiation absorber. The fusible fluid can be to selectively apply to the powder bed material. The magnetic fluid can include magnetic particles, and the magnetic fluid can be to selectively apply to the powder bed material.

公开(公告)号：US20220402205A1

公开(公告)日：2022-12-22

申请号：US17891922

申请日：2022-08-19

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

Inventor： Garry Hinch ,  Kevin P. DeKam ,  Sterling Chaffins ,  James William Stasiak

IPC: B29C64/165 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00 ,  B29C67/00 ,  B33Y70/10

Abstract: A 3-dimensional printed part can include a part body including a first matrix of fusing agent and thermoplastic polymer powder, a security feature including a second matrix of fusing agent, thermoplastic polymer powder, and photoluminescent agent, and a masking feature including a third matrix of fusing agent and thermoplastic polymer powder. The security feature can be positioned beneath and visible through the masking feature upon photoluminescent emission of the security feature.