公开(公告)号：US20210197503A1

公开(公告)日：2021-07-01

申请号：US16075671

申请日：2017-02-28

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

Inventor： Krzysztof NAUKA ,  Andrew E. FITZHUGH ,  Lihua ZHAO

IPC: B29C71/04 ,  B29C64/118 ,  B29C64/30 ,  B29C35/08 ,  B29C59/16

Abstract: According to examples, an apparatus includes a processor and a memory on which is stored machine readable instructions. The instructions may cause the processor to identify an intended surface property level for a surface of a three-dimensional (3D) object, determine an amount of radiation to be applied as a flash of radiation onto the surface to obtain the intended surface property level, and output the determined amount of radiation to be applied as a flash of radiation, in which a radiation source is to flash apply the determined amount of radiation onto the surface of the 3D object.

公开(公告)号：US20210197453A1

公开(公告)日：2021-07-01

申请号：US16075670

申请日：2017-04-05

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

Inventor： Krzysztof NAUKA ,  Chris Paul SCHODIN

IPC: B29C64/165 ,  B29C64/245 ,  B33Y10/00 ,  B33Y70/10 ,  B22F10/10 ,  B22F10/20 ,  B29C64/209 ,  B29C64/273

Abstract: A system may include a printhead for ejecting a first fluid including a polymer, the ejected first fluid forming a substrate with a thermal conductivity of less than 0.5 W/(m-K); a spreader to spread a layer of metal particulate on the substrate, wherein the printhead further ejects a second fluid, the ejected second fluid masking a portion of the layer of metal particulate on the substrate; and a pulse irradiation light source to fuse an unmasked portion of the layer of metal particulate.

公开(公告)号：US20210197285A1

公开(公告)日：2021-07-01

申请号：US16076370

申请日：2017-04-18

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

Inventor： Christopher Paul SCHODIN ,  Krzysztof NAUKA

IPC: B22F12/00 ,  B22F10/14 ,  B22F10/64 ,  B33Y10/00 ,  B33Y30/00

Abstract: According to examples, an apparatus may include a build platform and a chamber. The chamber may support a layer forming station including a spreading component to spread a layer of build material particles onto the build platform and an agent delivery component to apply fusing agent onto selected locations on the spread layer of build material particles and a heating station including a heating component to apply energy onto the spread layer of build material particles and the applied fusing agent, in which the heating station is separated from the layer forming station. The apparatus may also include an actuator to move the chamber with respect to the build platform or vice versa while maintaining the separation between the layer forming station and the heating station.

公开(公告)号：US20240383208A1

公开(公告)日：2024-11-21

申请号：US18693897

申请日：2021-09-21

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

Inventor： Krzysztof NAUKA ,  Michelle NIU

IPC: B29C64/393 ,  B22F10/14 ,  B22F10/37 ,  B22F12/60 ,  B28B1/00 ,  B28B17/00 ,  B29C64/165 ,  B29C64/194 ,  B29C64/214 ,  B29C64/218 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes a bed moveable in a vertical direction. The bed is to receive a build material that is to form a three-dimensional (3D) printed object. The additive manufacturing system also includes a build material depositor to deposit the build material on the bed and a build material spreader to traverse across the bed to spread the build material. The additive manufacturing system also includes a solidification system to selectively solidify a layer of build material. The additive manufacturing system also includes a controller. The controller is to lower the bed by a first amount in preparation for receiving build material and iteratively raise the bed in increments in between passes of the build material spreader across the bed, wherein an increment is a portion of the first amount.

公开(公告)号：US20240367384A1

公开(公告)日：2024-11-07

申请号：US18686070

申请日：2021-08-23

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

Inventor： Krzysztof NAUKA

IPC: B29C64/393 ,  B22F10/14 ,  B22F10/36 ,  B22F12/90 ,  B28B1/00 ,  B28B17/00 ,  B29C64/165 ,  B29C64/209 ,  B29C64/295 ,  B29K21/00 ,  B29K71/00 ,  B29K77/00 ,  B29K105/08 ,  B29K307/04 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes an agent distribution device to selectively deposit an agent onto a layer of build material to form a layer of a three-dimensional (3D) object. The additive manufacturing system also includes a carriage to transport the agent distribution device across the layer of build material. The additive manufacturing system also includes an array of build material thermal sensors disposed on the carriage and facing the layer of build material. Each build material thermal sensor is to measure a temperature of the layer of build material in a particular region. A controller adjusts additive manufacturing based on an output of an associated build material thermal sensor.

公开(公告)号：US20210187834A1

公开(公告)日：2021-06-24

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 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/209 ,  B33Y30/00

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：US20170274593A1

公开(公告)日：2017-09-28

申请号：US15518477

申请日：2014-12-15

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

Inventor： Krzysztof NAUKA ,  Sivapackia GANAPATHIAPPAN ,  Lihua ZHAO ,  Howard S. TOM ,  Yan ZHAO ,  Hou T. NG

IPC: B29C67/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00

Abstract: In one example, a non-transitory processor readable medium with instructions thereon that when executed cause an additive manufacturing machine to partially or completely bury a part in layers of molten build material.

公开(公告)号：US20250153436A1

公开(公告)日：2025-05-15

申请号：US18834824

申请日：2022-02-02

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

Inventor： Krzysztof NAUKA ,  Aja HARTMAN

IPC: B29C64/282 ,  B29C64/165 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes a build material deposition device to deposit a layer of a powder build material. The additive manufacturing system includes a fusing agent deposition device to deposit a fusing agent on a first portion of the layer that is to form a 3D object and a fusing energy source to deliver energy absorbed by the fusing agent to heat the first portion to a melting temperature of the powder build material. The additive manufacturing system also includes a warming energy source to deliver energy absorbed by a second portion of the layer to a temperature below the melting temperature. In this example, the second portion includes a warming agent and the fusing energy source and the warming energy source have different emission spectra.

公开(公告)号：US20230391006A1

公开(公告)日：2023-12-07

申请号：US18031826

申请日：2020-10-16

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

Inventor： Krzysztof NAUKA ,  Esteve COMAS CESPEDES

IPC: B29C64/291 ,  B29C64/165 ,  B29C64/282

CPC classification number: B29C64/291 ,  B29C64/165 ,  B29C64/282 ,  B33Y30/00

Abstract: An additive manufacturing method includes: selecting one of a plurality of irradiation modules based on a selected module having a wavelength band tuned for absorption by a fusing agent to be used to form an object by additive manufacture; plugging the selected module into a socket over the build platform; supporting successive, stacked layers of the object being formed on the build platform; using a liquid dispenser mounted on the carriage, selectively dispensing the fusing agent into an uppermost layer of build material in a pattern corresponding to a layer of the object being formed; and fusing the build material by exposing the fusing agent to a first wavelength band from a first irradiation source in the selected module.

公开(公告)号：US20190039136A1

公开(公告)日：2019-02-07

申请号：US16074564

申请日：2016-10-31

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

Inventor： Krzysztof NAUKA

IPC: B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342

Abstract: According to an example, an apparatus may include a processor and a memory on which is stored instructions. The instructions may cause the processor to control at least one energy source to apply energy at a certain low energy level onto a layer of metallic particles, in which the metallic particles have micron-level dimensions, and in which application of the certain low energy level may sinter the metallic particles and may cause formation of physical connections between adjacent ones of the metallic particles. The instructions may also cause the processor to control the at least one energy source to apply energy at a certain high energy level onto the layer of metallic particles, in which application of the certain high energy level energy may melt and fuse the sintered metallic particles.