公开(公告)号：US20240300169A1

公开(公告)日：2024-09-12

申请号：US18280638

申请日：2021-03-12

申请人： Hewlett-Packard Development Company, L.P.

发明人： Emre Hiro DISCEKICI ,  Dennis J. SCHISSLER ,  Shannon Reuben WOODRUFF

IPC分类号： B29C64/165 ,  B29C64/291 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00

CPC分类号： B29C64/165 ,  B29C64/291 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00

摘要： The present disclosure provides methods of three-dimensional printing, including iteratively applying individual build material layers of polymer particles having a D50 particle size from about 20 μm to about 150 μm to a build material, and based on a three-dimensional object model, selectively applying a fusing agent onto the individual build material layers to form individually patterned object layers of the three-dimensional object and selectively applying a pore-promoting agent onto the individual build material layers at a discrete location of the individually patterned object layers to form a pore-generating region therein. The method also includes exposing the build material to electromagnetic energy to provide selective heat fusing of the polymer particles and to generate and displace molten polymer leaving a localized void having a void size from about 1 mm to about 20 mm.

公开(公告)号：US12076926B2

公开(公告)日：2024-09-03

申请号：US17547004

申请日：2021-12-09

申请人： Raven Space Systems, Inc.

发明人： Blake Herren ,  Ryan J. Cowdrey ,  John F. Gerling

IPC分类号： B29C64/291 ,  B29C64/165 ,  B29C64/209 ,  B29C64/336 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/10 ,  B29C64/106 ,  B29C64/295 ,  B29K63/00 ,  B29K307/04

CPC分类号： B29C64/291 ,  B29C64/165 ,  B29C64/209 ,  B29C64/336 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/10 ,  B29C64/106 ,  B29C64/295 ,  B29K2063/00 ,  B29K2307/04

摘要： Systems and methods for three-dimensional printing using microwave assisted deposition are disclosed herein. An example device includes a reservoir of carbonaceous nanocomposite thermoset, a microwave resonance cavity that cures the carbonaceous nanocomposite thermoset, and a sensor to measure the extrusion temperature of the resin when curing the carbonaceous nanocomposite thermoset at the point of deposition during extrusion-based 3D printing.

公开(公告)号：US20240157631A1

公开(公告)日：2024-05-16

申请号：US18280871

申请日：2021-03-12

申请人： Hewlett-Packard Development Company, L.P.

发明人： Emre Hiro DISCEKICI ,  Shannon Reuben WOODRUFF ,  Dennis J. SCHISSLER ,  Graciela Emma NEGRI JIMENEZ

IPC分类号： B29C64/118 ,  B29C44/34 ,  B29C64/291 ,  B29C64/295 ,  B33Y10/00 ,  B33Y70/10

CPC分类号： B29C64/118 ,  B29C44/348 ,  B29C64/291 ,  B29C64/295 ,  B33Y10/00 ,  B33Y70/10

摘要： The present disclosure includes a multi-fluid kit for three-dimensional printing. The multi-fluid kit can include a fusing agent comprising water and a radiation absorber that absorbs radiation energy and converts the radiation energy to heat, an acidic agent having a pH from about pH 1 to about pH 6.9 that includes water and an acidic component, and a pore-promoting agent including water and a pore-promoting compound. The pore-promoting compound can chemically react with the acidic component to generate a gas, and can be selected from sodium bicarbonate, potassium bicarbonate, or a combination thereof.

公开(公告)号：US11752687B2

公开(公告)日：2023-09-12

申请号：US16548412

申请日：2019-08-22

申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： Hyung Min Kim ,  Ki Joo Pahk ,  Byung Chul Lee ,  Inchan Youn

IPC分类号： B29C64/106 ,  B29C64/393 ,  B33Y50/02 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/291 ,  B29C64/282

CPC分类号： B29C64/106 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/282 ,  B29C64/291

摘要： According to an embodiment of the present disclosure, there is provided a completely new type of 3-dimensional (3D) printing method for producing an object by focusing ultrasound onto material that changes in state by stimulation to solidify it into a desired shape. The method for 3D printing according to an embodiment includes providing material which changes in state by stimulation, setting a target focal point in the material, focusing ultrasound onto the target focal point using at least one ultrasound transducer, and applying stimulation to the material using the focused ultrasound to induce a change in state of the material. According to the embodiments, it is possible to control the precision of the output by controlling the frequency of the ultrasound transducer or the size of the target focal point on system.

公开(公告)号：US11654629B2

公开(公告)日：2023-05-23

申请号：US17257342

申请日：2018-10-26

申请人： Hewlett-Packard Development Company, L.P.

发明人： Camilo Andres Moreno Cleves ,  Krzysztof Nauka

IPC分类号： B29C64/153 ,  B29C64/264 ,  B33Y30/00 ,  G02B5/10 ,  B29C64/291 ,  B33Y10/00 ,  B33Y50/02

CPC分类号： B29C64/291 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  G02B5/10 ,  B33Y50/02

摘要： In example implementations, a minor assembly for a three dimensional printer is provided. The minor assembly includes a first side and a second side. The first side is symmetrical to the second side and enclose a cylindrical light source. The first side and the second side each include a first curved reflective surface and a second curved reflective surface. An end of the first curved reflective surface and a beginning of the second curved reflective surface form an edge along a surface formed by the first curved reflective surface and the second curved reflective surface.

公开(公告)号：US11577454B2

公开(公告)日：2023-02-14

申请号：US16605140

申请日：2018-03-15

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Kristopher J. Erickson ,  Paul Olubummo ,  Aja Hartman ,  Lihua Zhao

IPC分类号： B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/291 ,  C08K3/04 ,  B29K105/00

摘要： 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：US11453166B2

公开(公告)日：2022-09-27

申请号：US16615107

申请日：2018-01-30

申请人： HUAIYIN INSTITUTE OF TECHNOLOGY

发明人： Yuwei Dong ,  Aihui Liu ,  Zhengbang Dong ,  Yingyu Wang ,  Wenjin Zhao ,  Kewei Wang ,  Jinlin Wan ,  Yingying Guan ,  Lechao Wang

IPC分类号： B29C64/291 ,  B29C71/04 ,  B29C64/241 ,  B29C64/30 ,  B33Y30/00 ,  B33Y40/20 ,  B29C35/08

摘要： The present invention discloses a UV curing apparatus for a 3D printing product, including a base. A tray is disposed above the base. The tray is horizontally and rotatably connected around a vertical rotating shaft on the base. A hood concentric with the tray is disposed on the base. The tray is located in the hood, and UV light tubes are arranged on an inner wall of the hood. The tray provides a driving force by means of a driving motor. The driving motor is fixed in the base. As can be seen from the foregoing structure, according to the UV curing apparatus for a 3D printing product in the present invention, a UV curing apparatus applicable to a 3D product is provided, and the surface of the 3D product can be automatically and uniformly subjected to UV curing.

公开(公告)号：US20220274326A1

公开(公告)日：2022-09-01

申请号：US17632476

申请日：2020-07-07

申请人： ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE

发明人： Paul Delrot ,  Damien Loterie ,  Christophe Moser

IPC分类号： B29C64/165 ,  B29C64/291 ,  B29C64/314 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/10

摘要： The present invention is related to a method and apparatus for the volumetric fabrication of three-dimensional objects or articles from photoresponsive materials loaded with scattering particles, by adjusting the refractive index of said photoresponsive material (12) so as to match the refractive index of said scattering particles (30), and/or using a light source emitting light of a wavelength longer than 630 nm, preferably in a range from 630 nm to 1050 nm, more preferably in a range from 650 nm to 900 nm.

公开(公告)号：US11196876B2

公开(公告)日：2021-12-07

申请号：US16549424

申请日：2019-08-23

申请人： Young Optics Inc.

发明人： Chao-Shun Chen ,  Chang-Chun Chen ,  Ming-Fu Hsu

IPC分类号： B29C64/00 ,  H04N1/00 ,  B33Y30/00 ,  B33Y50/02 ,  G06K15/02 ,  B29C64/393 ,  B29C64/291

摘要： The embodiment of the present invention provides a method for a 3-D projection printing system and a system thereof, more particularly to a system adopts both ways of look-up table and interpolation method to calibrate. The embodiment of the present invention provides a portable calibration fixture system and a flexible 3-D projection printing system in order to improve calibration precision, facilitate calibration and printing operations, increase printing effect and save cost.

公开(公告)号：US11072112B2

公开(公告)日：2021-07-27

申请号：US16098072

申请日：2016-07-19

申请人： Hewlett-Packard Development Company, L.P.

发明人： Krzysztof Nauka ,  Howard S. Tom ,  Kristopher Li

IPC分类号： B29C64/129 ,  B33Y70/00 ,  B33Y10/00 ,  B29C64/112 ,  B29C64/165 ,  B29C64/393 ,  B29C64/295 ,  B29C64/264 ,  B33Y30/00 ,  B29C64/291 ,  B29C35/08

摘要： To additively manufacture a 3D object, a layer of material is deposited onto a receiving surface. Droplets are selective deposited onto first portions of the layer with at least some droplets including at least a first color agent. A gas discharge illuminant selectively induces a first amount of heating in the first portions of the layer substantially greater than a second amount of heating in second portions of the layer omitting the first color agent.