公开(公告)号：US20240359402A1

公开(公告)日：2024-10-31

申请号：US18768861

申请日：2024-07-10

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

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

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

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

摘要： 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：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：US11511479B2

公开(公告)日：2022-11-29

申请号：US16076369

申请日：2017-07-10

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

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

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

摘要： 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

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

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

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

摘要： 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：US20220072773A1

公开(公告)日：2022-03-10

申请号：US17414175

申请日：2019-05-28

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

发明人： Kristopher J. Erickson ,  Jarrid Wittkopf ,  Aja Hartman ,  Lihua Zhao

IPC分类号： B29C64/194 ,  B29C64/153 ,  B29C64/295 ,  B29C64/205 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y40/00

摘要： In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes a build material distributor to deposit layers of powdered build material onto a bed to form a three-dimensional (3D) printed object. The additive manufacturing system also includes a controller to interrupt printing of the 3D printed object and to resume printing of the 3D printed object. The additive manufacturing system also includes a heat source to, during an interruption in printing, maintain a temperature of a top surface of the powdered build material between a solidification temperature and a melting temperature for the build material.

公开(公告)号：US20220001596A1

公开(公告)日：2022-01-06

申请号：US17311978

申请日：2018-12-14

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

发明人： Aja Hartman ,  Alexandra Ju ,  Mary G. Baker ,  Lihua Zhao ,  Howard S. Tom ,  Melanie M. Gottwals ,  Ingeborg Tastl

IPC分类号： B29C64/106 ,  B29C64/209 ,  B29C64/307 ,  B33Y10/00 ,  B33Y30/00

摘要： A three-dimensional printing system includes a controller to instruct a fusing agent distributor to selectively apply a fusing agent to a first region of a layer of build material. The controller also determines a subset of voxels in the layer of build material to provide an opacifying agent based on an opacity value of an opacified region of an object to be generated and instructs an opacifying agent distributor to apply the opacifying agent to the determined subset of voxels.

公开(公告)号：US11104069B2

公开(公告)日：2021-08-31

申请号：US16072144

申请日：2016-05-05

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

发明人： Krzysztof Nauka ,  Vladek Kasperchik ,  Aja Hartman

IPC分类号： B29C64/188 ,  B33Y30/00 ,  B33Y40/00 ,  B23K26/354 ,  B23K26/00 ,  B23K26/352 ,  B29C71/02 ,  B29C71/04 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/153 ,  B29C64/393 ,  B23K103/00

摘要： According to an example, in a method, a radiation source that is to output radiation at a preset energy level onto a surface of a three-dimensional (3D) printed object may be activated. In addition, the radiation source may be deactivated after a predefined period of time sufficient to cause an outer portion of about a predetermined thickness of the surface of the 3D printed object to begin to melt to finish the surface of the 3D printed object.

公开(公告)号：US20190134898A1

公开(公告)日：2019-05-09

申请号：US16098082

申请日：2016-07-27

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

发明人： Yan Zhao ,  Kristopher J. Erickson ,  Aja Hartman ,  Lihua Zhao ,  Sterling Chaffins ,  Kevin P. DeKam

IPC分类号： B29C64/165 ,  B29C64/112 ,  B29C64/393 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00

摘要： In an example method for forming three-dimensional (3D) printed electronic parts, a build material is applied. An electronic agent is selectively applied in a plurality of passes on a portion of the build material. A fusing agent is also selectively applied on the portion of the build material. The build material is exposed to radiation in a plurality of heating events. During at least one of the plurality of heating events, the portion of the build material in contact with the fusing agent fuses to form a region of a layer. The region of the layer exhibits an electronic property. An order of the plurality of passes, the selective application of the fusing agent, and the plurality of heating events is controlled to control a mechanical property of the layer and the electronic property of the region.

公开(公告)号：US20240286345A1

公开(公告)日：2024-08-29

申请号：US18572099

申请日：2021-06-24

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

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

IPC分类号： B29C64/165 ,  B29C64/194 ,  B29C64/264 ,  B29K21/00 ,  B29K77/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00

CPC分类号： B29C64/165 ,  B29C64/194 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  B29C64/264 ,  B29K2021/003 ,  B29K2077/00 ,  B29K2105/251 ,  B29K2995/002 ,  B29K2995/0026 ,  B29K2995/0029

摘要： A three-dimensional printing kit can include a build material having from about 80 wt % to 100 wt % polymeric particles with a D50 particle size from about 10 μm to about 150 μm, and a fusing agent including from about 0.5 wt % to about 20 wt % benzotriazole radiation absorber solubilized in a liquid vehicle.

公开(公告)号：US20240286344A1

公开(公告)日：2024-08-29

申请号：US18571707

申请日：2021-06-24

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

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

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

CPC分类号： 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

摘要： 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.