公开(公告)号：US20180126631A1

公开(公告)日：2018-05-10

申请号：US15568979

申请日：2015-07-23

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

Inventor： Krzysztof Nauka ,  Howard S. Tom ,  Kristopher J. Erickson ,  Lihua Zhao ,  Sivapackia Ganapathiappan

IPC: B29C64/153 ,  B33Y70/00 ,  C08K3/22 ,  C08K5/00 ,  C08L101/12 ,  C08L77/02 ,  C08L71/12

CPC classification number: B29C64/153 ,  B33Y70/00 ,  C08K3/20 ,  C08K3/22 ,  C08K3/30 ,  C08K3/32 ,  C08K5/00 ,  C08K5/0091 ,  C08K2003/2248 ,  C08K2201/005 ,  C08L71/12 ,  C08L77/02 ,  C08L101/00 ,  C08L101/12

Abstract: A three-dimensional printing build material composition includes a polymer particle, and a radiation absorbing additive mixed with the polymer particle. The radiation absorbing additive has a particle size ranging from about 1 μm to about 100 μm, and the radiation absorbing additive is to absorb incident radiation having wavelengths ranging from 700 nm to 10 μm.

公开(公告)号：US20240359402A1

公开(公告)日：2024-10-31

申请号：US18768861

申请日：2024-07-10

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

Inventor： Kristopher J. Erickson ,  Melanie M. Gottwals ,  Ingeborg Tastl ,  Aja Hartman ,  Adekunle Olubummo

IPC: B29C64/165 ,  B29C35/08 ,  B29K77/00 ,  B33Y10/00 ,  B33Y70/00 ,  C09D7/48 ,  C09D7/63 ,  C09D177/02

CPC classification number: B29C64/165 ,  B29C35/0805 ,  B33Y10/00 ,  B33Y70/00 ,  C09D7/48 ,  C09D7/63 ,  C09D177/02 ,  B29C2035/0822 ,  B29C2035/0827 ,  B29K2077/00

Abstract: A three-dimensional printing method can include iteratively applying polymer build material as individual layers; based on a three-dimensional object model, selectively jetting an electromagnetic radiation absorber and a translucency-modulating plasticizer onto individual layers of the polymer build material; and exposing the powder bed to electromagnetic energy to selectively fuse portions of individual layers of the polymer build material together to form a three-dimensional object. The polymer build material can include from about 60 wt % to 100 wt % polymeric particles having an average particle size from about 10 μm to about 150 μm and a degree of crystallinity from about 2% to about 60%, to a powder bed. At the locations where the polymer build material includes jetted translucency-modulating plasticizer, the three-dimensional object can exhibit an optical transmittance from about 5% to about 80%.

公开(公告)号：US11969945B2

公开(公告)日：2024-04-30

申请号：US17414803

申请日：2019-06-18

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

Inventor： Kristopher J. Erickson ,  Jarrid Wittkopf ,  Rafael Ballagas ,  David Wayne George ,  Lihua Zhao ,  William J. Allen

IPC: B29C64/379 ,  B29C64/393 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y40/20 ,  B33Y50/00 ,  B33Y50/02 ,  G06K19/06 ,  G06K19/07 ,  G06K19/077

CPC classification number: B29C64/379 ,  B29C64/393 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y50/02 ,  G06K19/0723 ,  G06K19/07758

Abstract: In one example in accordance with the present disclosure, a system is described. The system includes a reader to 1) read an identifier from a three-dimensional (3D) System printed object that includes a storage element and 2) read a location of the 3D printed object within a build material bed. An extractor of the system extracts, based on the identifier, a post processing operation to execute on the 3D printed object. A controller of the system controls a post processing operation based on extracted post processing operation information and the location.

公开(公告)号：US11911825B2

公开(公告)日：2024-02-27

申请号：US16606310

申请日：2018-03-13

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

Inventor： Kristopher J. Erickson ,  David George ,  Sterling Chaffins ,  Lihua Zhao

IPC: B29C64/165 ,  B22F7/08 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/194 ,  B29C64/112 ,  H05K1/18 ,  H05K3/28 ,  H05K3/32 ,  H05K3/46 ,  B29K105/16 ,  B29L31/34

CPC classification number: B22F7/08 ,  B29C64/112 ,  B29C64/165 ,  B29C64/194 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  H05K1/186 ,  H05K3/284 ,  H05K3/32 ,  H05K3/4664 ,  B29K2105/162 ,  B29K2995/0005 ,  B29L2031/3425 ,  H05K2201/10022 ,  H05K2201/10628 ,  H05K2203/1131 ,  B22F2999/00 ,  B22F1/10 ,  B22F10/20

Abstract: In an example, a method is described that includes building a first layer of a three-dimensional heterogeneous object in a first plurality of passes of an additive manufacturing system. An electronic component is inserted directly into the first layer. The electronic component is then fused to the first layer in a second plurality of passes of the additive manufacturing system.

公开(公告)号：US11845128B2

公开(公告)日：2023-12-19

申请号：US16605423

申请日：2018-06-08

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

Inventor： John Samuel Dilip Jangam ,  Thomas Anthony ,  Krzysztof Nauka ,  Kristopher J. Erickson

IPC: B33Y70/10 ,  B22F9/04 ,  B22F1/05 ,  B22F1/142 ,  B33Y70/00 ,  B22F10/14 ,  B33Y10/00 ,  B29C64/165

CPC classification number: B22F10/14 ,  B22F1/05 ,  B22F1/142 ,  B22F9/04 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y70/10 ,  B22F2009/043 ,  B22F2304/10 ,  B29C64/165 ,  B22F2999/00 ,  B22F1/142 ,  B22F2207/11 ,  B22F2009/043 ,  B22F1/05 ,  B22F2998/10 ,  B22F10/14 ,  B22F9/18 ,  B22F3/10

Abstract: A powder bed material can include from 80 wt % to 100 wt % metal particles having a D50 particle size distribution value from 4 μm to 150 μm. From 10 wt % to 100 wt % of the metal particles can be surface-activated metal particles having in intact inner volume and an outer volume with structural defects. The structural defects can exhibit an average surface grain density of 50,000 to 5,000,000 per mm2.

公开(公告)号：US20230347585A1

公开(公告)日：2023-11-02

申请号：US18132352

申请日：2023-04-07

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

Inventor： Krzysztof Nauka ,  Howard S. Tom ,  Kristopher J. Erickson ,  Lihua Zhao ,  Sivapackia Ganapathiappan

IPC: B29C64/165 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/153 ,  B29C64/194 ,  B33Y70/10 ,  B33Y50/02 ,  B29C64/264 ,  B29C64/112 ,  B29C64/393 ,  B29C64/218 ,  B29C35/08

CPC classification number: B29C64/165 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/153 ,  B29C64/194 ,  B33Y70/10 ,  B33Y50/02 ,  B29C64/264 ,  B29C64/112 ,  B29C64/393 ,  B29C64/218 ,  B29C35/0805 ,  B29C2035/0822 ,  B29K2077/00

Abstract: A three-dimensional (3D) printing method includes applying a build material composition having a polymer particle and a radiation absorbing additive mixed with the polymer particle, the radiation absorbing additive being selected from the group consisting of inorganic near-infrared absorbers, organic near-infrared absorbers, and combinations thereof. The build material composition is preheated to a temperature below the melting temperature of the polymer particle by exposing the build material composition to radiation, the radiation absorbing additive increasing radiation absorption and accelerating the pre-heating of the build material composition. A fusing agent is selectively applied on at least a portion of the build material composition. The method further includes exposing the build material composition to radiation, whereby at least the polymer particle in the at least the portion of the build material composition in contact with the fusing agent at least partially fuses.

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：US11511479B2

公开(公告)日：2022-11-29

申请号：US16076369

申请日：2017-07-10

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

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

IPC: B29C64/393 ,  B29C64/112 ,  B29C64/165 ,  B29C64/205 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A device includes a carriage movable relative to a build pad along a bi-directional travel path and supporting at least a radiation source and an applicator to selectively apply a plurality of fluid agents, including first fluid agents to affect a first material property. A timing and order of operation of the radiation source and the applicator, with the carriage, is to maintain first and second portions of a 3D object under formation within at least one selectable temperature range despite a first total volume of the first fluid agents for application onto the first portion of the 3D object being substantially greater than a second total volume of second fluid agents for application onto the second portion of the 3D object.

公开(公告)号：US20220355543A1

公开(公告)日：2022-11-10

申请号：US17298898

申请日：2019-07-15

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

Inventor： Kristopher J. Erickson ,  Melanie M. Gottwals ,  Ingeborg Tastl ,  Aja Hartman ,  Adekunle Olubummo

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D177/02 ,  C09D7/48 ,  C09D7/63

Abstract: A three-dimensional printing method can include iteratively applying polymer build material as individual layers; based on a three-dimensional object model, selectively jetting an electromagnetic radiation absorber and a translucency-modulating plasticizer onto individual layers of the polymer build material; and exposing the powder bed to electromagnetic energy to selectively fuse portions of individual layers of the polymer build material together to form a three-dimensional object. The polymer build material can include from about 60 wt % to 100 wt % polymeric particles having an average particle size from about 10 ?m to about 150 ?m and a degree of crystallinity from about 2% to about 60%, to a powder bed. At the locations where the polymer build material includes jetted translucency-modulating plasticizer, the three-dimensional object can exhibit an optical transmittance from about 5% to about 80%.

公开(公告)号：US20220314535A1

公开(公告)日：2022-10-06

申请号：US17843222

申请日：2022-06-17

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

Inventor： Kristopher J. Erickson ,  Thomas C. ANTHONY ,  Lihua ZHAO

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/30 ,  B33Y40/20 ,  B29C71/00 ,  B29C71/02 ,  C23C18/16 ,  C25D5/56

Abstract: A device includes a coater, a dispenser, and a treatment portion. The coater is to coat, layer-by-layer, a build material relative to a build pad to form a 3D object. The dispenser is to at least dispense a fluid including a first at least potentially electrically conductive material in at least some selected locations of an external surface of the 3D object. The treatment portion is to treat the 3D object to substantially increase electrically conductivity on the external surface of the 3D object at the at least some selected locations.