公开(公告)号：US20240286344A1

公开(公告)日：2024-08-29

申请号：US18571707

申请日：2021-06-24

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

Inventor： Kyle Wycoff ,  Adekunle Olubummo ,  Krzysztof Nauka ,  Aja Hartman ,  Michelle Niu ,  Emre Hiro Discekici

IPC: B29C64/165 ,  B29C64/188 ,  B29C64/264 ,  B29K21/00 ,  B29K77/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08K5/3492

CPC classification number: B29C64/165 ,  B29C64/188 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08K5/3492 ,  B29K2021/003 ,  B29K2077/00 ,  B29K2105/251 ,  B29K2995/002 ,  B29K2995/0026 ,  B29K2995/0029

Abstract: A fusing agent for three-dimensional printing can include from about 0.5 wt % to about 6 wt % triazine radiation absorber; from about 40 wt % to about 90 wt % organic cosolvent; from about 0.4 wt % to about 4 wt % of a surfactant selected from a polyethylene sorbitol ester, a polyoxyethylene lauryl ether, or a mixture thereof; and water.

公开(公告)号：US12036734B2

公开(公告)日：2024-07-16

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: B29C64/264 ,  B29C35/08 ,  B29C64/165 ,  B29C64/336 ,  B29C71/04 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  C09D7/48 ,  C09D7/63 ,  C09D177/02 ,  B29K77/00

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 ?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：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：US11673332B2

公开(公告)日：2023-06-13

申请号：US17256676

申请日：2019-03-15

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

Inventor： Aja Hartman ,  Lihua Zhao ,  David Woodlock ,  Lee Dockstader

IPC: G05B19/4099 ,  B29C64/386 ,  B33Y50/00 ,  B22F10/80 ,  G06F30/10 ,  G06F113/10

CPC classification number: B29C64/386 ,  B22F10/80 ,  B33Y50/00 ,  G05B19/4099 ,  G05B2219/35012 ,  G05B2219/45028 ,  G06F30/10 ,  G06F2113/10

Abstract: In an example, a method includes operating, by a processor, on object model data. The object model data describes at least part of an object to be generated in additive manufacturing. The method also includes determining, by a processor, pattern data. The pattern data comprising areas of variable reflectance intended to be formed on a portion of the object. The method includes determining, by a processor, object generation instructions to apply a fusing agent to at least part of a layer of build material corresponding to the portion of the object in a density corresponding to the reflectance of the generated pattern data.

公开(公告)号：US20220226892A1

公开(公告)日：2022-07-21

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: B22F1/00 ,  B22F10/14 ,  B22F3/10 ,  B22F1/105

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：US11383435B2

公开(公告)日：2022-07-12

申请号：US17047723

申请日：2019-04-29

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

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

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/268 ,  C08K5/17 ,  C08L63/00 ,  C08L77/04 ,  B29K63/00 ,  B29K77/00 ,  B29K105/00 ,  B29K105/24

Abstract: In an example of a method for three-dimensional (3D) printing, a build material composition is applied to form a build material layer. The build material composition includes a polyamide. The polyamide is selectively melted, based on a 3D object model, in at least a portion of the build material layer to form a molten portion including molten polyamide. An epoxy agent is selectively applied, based on the 3D object model, on the molten portion of the build material layer. The epoxy agent includes a polyfunctional epoxy, which crosslinks the molten polyamide in the molten portion.

公开(公告)号：US20210299967A1

公开(公告)日：2021-09-30

申请号：US17236698

申请日：2021-04-21

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

Inventor： Aja Hartman ,  Lihua Zhao

IPC: B29C64/393 ,  B29C64/165 ,  G01N25/72 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  G01N21/00

Abstract: In one example, an additive manufacturing process includes: making an object slice by slice, including dispensing a first quantity of each of multiple liquid functional agents on to a layer of fusable build material and then irradiating the layer of build material; while making the object, identifying a deviant region in a slice; and dispensing a second quantity different from the first quantity of at least one of the functional agents into a location corresponding to the deviant region.

公开(公告)号：US20190147585A1

公开(公告)日：2019-05-16

申请号：US16098061

申请日：2016-07-29

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

Inventor： Aja Hartman ,  Lihua Zhao

IPC: G06T7/00 ,  G01N21/88 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02

Abstract: According to an example, an apparatus may include an image capture device, a controller, and a computer readable storage medium. The computer readable storage medium may include instructions that may cause the controller to receive, from the image capture device, an image of a testing agent deposited in a testing pattern onto a layer of build materials, in which the layer of build materials is to form a section of a three-dimensional printed part. The instructions may also cause the controller to determine a condition of the deposited testing pattern in the received image, wherein the determined condition is to be used to determine a quality level of the layer of build materials based upon the determined condition.

公开(公告)号：US20230203306A1

公开(公告)日：2023-06-29

申请号：US18113024

申请日：2023-02-22

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

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

IPC: B33Y10/00 ,  B29C64/165 ,  C09D7/63 ,  C08L77/02 ,  C08K5/00 ,  C08K3/04 ,  B33Y70/00 ,  C09D177/02 ,  B29K63/00 ,  B29K105/16 ,  B22F1/054 ,  B33Y80/00 ,  B29K101/12

CPC classification number: B33Y10/00 ,  B29C64/165 ,  C09D7/63 ,  C08L77/02 ,  C08K5/0091 ,  C08K3/04 ,  B33Y70/00 ,  C09D177/02 ,  B29K2063/00 ,  B29K2105/16 ,  B22F1/054 ,  B33Y80/00 ,  B29K2101/12

Abstract: The present disclosure is drawn to multi-fluid kits for three-dimensional to 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：US11524452B2

公开(公告)日：2022-12-13

申请号：US16074276

申请日：2016-10-31

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.