公开(公告)号：US12138860B2

公开(公告)日：2024-11-12

申请号：US17288550

申请日：2019-04-29

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

Inventor： Sterling Chaffins ,  Thomas A. Saksa ,  Kevin P. DeKam ,  Juan Sebastian Ramirez ,  Dale Peterson ,  Jami Ryan Barone

IPC: B29C64/295 ,  B22F1/054 ,  B22F1/10 ,  B29C64/165 ,  B29C64/268 ,  B33Y70/10 ,  B33Y10/00 ,  B33Y30/00

Abstract: Methods and systems for making three-dimensional printed articles. In one example, a method of making a three-dimensional article can include printing a conductive element including a composite of a conductive material and a polymeric build material; printing an adjacent portion in contact with the conductive element, where the adjacent portion includes a nonconductive polymeric build material; and heating the conductive element by running an electric current through the conductive element, and thereby heating the adjacent portion to a temperature sufficient to change a physical property of the nonconductive polymeric build material of the adjacent portion.

公开(公告)号：US20230303884A1

公开(公告)日：2023-09-28

申请号：US18327778

申请日：2023-06-01

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam ,  Michael G. Monroe

IPC: C09D11/54 ,  C09D11/52 ,  B33Y30/00 ,  C09D11/40 ,  B29C64/165 ,  C09D11/32 ,  B33Y70/10 ,  B33Y40/10 ,  B29C64/112 ,  B29C64/20 ,  C09D11/037 ,  C09D11/322

CPC classification number: C09D11/54 ,  C09D11/52 ,  B33Y30/00 ,  C09D11/40 ,  B29C64/165 ,  C09D11/32 ,  B33Y70/10 ,  B33Y40/10 ,  B29C64/112 ,  B29C64/20 ,  C09D11/037 ,  C09D11/322 ,  B29K2101/12

Abstract: A method for forming parts with electrically conductive features includes applying a layer of thermoplastic polymer powder particles in a powder bed and selectively applying an aqueous pretreat composition including a metal chloride salt on a portion of the layer. A conductive fusing ink including transition metal particles and a dispersing agent is selectively applied onto the applied aqueous pretreat composition on the portion of the layer, wherein the dispersing agent binds to, and passivates surfaces of the transition metal particles. The layer is exposed to electromagnetic radiation to fuse the thermoplastic polymer powder particles in the portion of the layer and sinter the transition metal particles, thereby forming a conductive feature.

公开(公告)号：US11712845B2

公开(公告)日：2023-08-01

申请号：US17047729

申请日：2018-10-16

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

CPC classification number: 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：US20210179878A1

公开(公告)日：2021-06-17

申请号：US16074235

申请日：2016-04-28

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

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

IPC: C09D11/50 ,  C09D11/54 ,  C09D11/322 ,  C09D11/102 ,  C09D11/037 ,  B33Y30/00 ,  B29C64/165 ,  B33Y80/00 ,  B33Y70/00 ,  B29C64/112

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, a photoluminescent ink including a photoluminescent 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：US20190152137A1

公开(公告)日：2019-05-23

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 ,  G01L1/22 ,  B29C64/307 ,  B29C64/295

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：US20190010348A1

公开(公告)日：2019-01-10

申请号：US16064492

申请日：2016-04-15

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam ,  Michael G. Monroe

IPC: C09D11/54 ,  B29C64/165 ,  B29C64/112 ,  B29C64/20 ,  B33Y30/00 ,  B33Y70/00 ,  C09D11/40 ,  C09D11/52 ,  C09D11/322 ,  C09D11/037

Abstract: The present disclosure is drawn to ink sets, material sets, and 3-dimensional printing systems. An ink set can include a pretreat composition that includes a metal chloride salt, a conductive fusing ink including a transition metal, and a second fusing ink. The second fusing ink can include a fusing agent capable of absorbing electromagnetic radiation to produce heat.

公开(公告)号：US20230347586A1

公开(公告)日：2023-11-02

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 ,  B33Y70/00 ,  C09D5/23 ,  B33Y10/00

CPC classification number: 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：US20220063189A1

公开(公告)日：2022-03-03

申请号：US17288550

申请日：2019-04-29

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

Inventor： Sterling Chaffins ,  Thomas A. Saksa ,  Kevin P. DeKam ,  Juan Sebastian Ramirez ,  Dale Peterson ,  Jami Ryan Barone

IPC: B29C64/165 ,  B29C64/295 ,  B29C64/268

Abstract: Methods and systems for making three-dimensional printed articles. In one example, a method of making a three-dimensional article can include printing a conductive element including a composite of a conductive material and a polymeric build material; printing an adjacent portion in contact with the conductive element, where the adjacent portion includes a nonconductive polymeric build material; and heating the conductive element by running an electric current through the conductive element, and thereby heating the adjacent portion to a temperature sufficient to change a physical property of the nonconductive polymeric build material of the adjacent portion.

公开(公告)号：US10926464B2

公开(公告)日：2021-02-23

申请号：US16064994

申请日：2016-04-15

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam

IPC: B29C64/209 ,  B33Y70/00 ,  B33Y30/00 ,  B33Y80/00 ,  B29C64/165 ,  C09D11/54 ,  B29C64/264 ,  B22F3/00

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing. The material set can include a thermoplastic polymer powder having an average particle size from 20 μm to 100 μm, a conductive fusing ink comprising a transition metal, and second fusing ink. The second fusing ink can include a fusing agent capable of absorbing electromagnetic radiation to produce heat. The second fusing ink can provide a lower conductivity than the conductive fusing ink when printed on the thermoplastic polymer powder.

公开(公告)号：US10294381B2

公开(公告)日：2019-05-21

申请号：US15308708

申请日：2014-06-04

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

Inventor： Sterling Chaffins ,  Kevin P. DeKam ,  Jayprakash C. Bhatt ,  Larrie Deardurff ,  Cory J. Ruud ,  Matthew Thornberry

IPC: B41J2/01 ,  C09D11/38 ,  C09D11/322

Abstract: The present disclosure is drawn to a pigment-based inkjet ink and methods. The inkjet ink includes water; from 2 wt % to 9 wt % pigment solids; from 0.05 wt % to 2 wt % of an acetylenic diol non-ionic surfactant; from 0.05 wt % to 2 wt % of a second surfactant. The second surfactant can be a polysorbate having at least 50% lipophilic oleic acid groups and having an HLB value of less than 15, or a C12-C18 polyoxyethylene glycol ether having an ethylene oxide number less than 20, or a perfluoropolyether including a polyethylene glycol primary alcohol or diol. The inkjet ink also includes from 5 wt % to 50 wt % of an organic solvent system comprising triethylene glycol and a cyclic amide.