公开(公告)号：US20190077080A1

公开(公告)日：2019-03-14

申请号：US16077753

申请日：2017-02-06

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

发明人： Yan ZHAO ,  Lihua ZHAO ,  Paul OLUBUMMO ,  Aja HARTMAN ,  Howard S. TOM

IPC分类号： B29C64/268 ,  B29C64/291 ,  B29C64/393 ,  C09D11/50

摘要： In an example of a three-dimensional (3D) printing method, a polymeric or polymeric composite build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The fusing agent includes a discolorable near-infrared absorbing dye, a thiol surfactant, a reducing agent, and a balance of water. Near-infrared radiation is applied to the polymeric or polymeric composite build material at a condition that maintains a temperature of the selectively applied fusing agent below a decomposition temperature of the fusing agent and that allows the discolorable near-infrared absorbing dye to harvest near-infrared radiation energy, in order to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer and to initiate discoloration of the discolorable near-infrared absorbing dye in the layer.

公开(公告)号：US20180111320A1

公开(公告)日：2018-04-26

申请号：US15565850

申请日：2015-06-02

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

发明人： Yan ZHAO ,  Hou T. NG ,  Alejandro Manuel DE PENA

IPC分类号： B29C64/386 ,  B33Y50/00 ,  G05B19/4099

摘要： In one implementation, a system comprising a target engine, a thermal engine, and a sacrificial object engine is described. The target engine is to identify a target region of a build bed of a print device where a target object is to be located. The thermal engine is to identify a temperature level of the target region. The sacrificial object engine is to identify an object location to place a sacrificial object in response to a determination that the temperature level of the target region is deficient to achieve a temperature threshold for production.

公开(公告)号：US20180133969A1

公开(公告)日：2018-05-17

申请号：US15564393

申请日：2015-07-31

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

发明人： Wei HUANG ,  Jun ZENG ,  Yan ZHAO ,  Scott WHITE ,  Sebastia CORTES I HERMS

IPC分类号： B29C64/386 ,  B29C64/171

CPC分类号： B29C64/386 ,  B29C64/171 ,  B33Y10/00 ,  B33Y50/00 ,  B33Y50/02 ,  G05B19/4099

摘要： According to an example, an arrangement of parts to be printed in a build envelope of a three dimensional (3D) printer may be determined through identification of a plurality of parts to be printed and generation of a respective virtual bounding box for each of the plurality of parts. In one example, a determination may be made that a total volume occupied by the generated virtual bounding boxes falls below a predetermined threshold of the build envelope volume and an arrangement of the virtual bounding boxes inside the build envelope that results in a total height of the virtual bounding boxes being minimized may be determined, to enhance efficiency in printing of the plurality of parts by the 3D printer.

公开(公告)号：US20180320009A1

公开(公告)日：2018-11-08

申请号：US15764863

申请日：2016-01-27

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

发明人： Sivapackia GANAPATHIAPPAN ,  Howard S. TOM ,  Yan ZHAO ,  Kristopher J. ERICKSON ,  Krzysztof NAUKA ,  Lihua ZHAO

IPC分类号： C09D11/322 ,  C09D11/023 ,  C09D11/101 ,  C09D11/037 ,  C09D11/102 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165

CPC分类号： C09D11/322 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/023 ,  C09D11/037 ,  C09D11/101 ,  C09D11/102 ,  C09D11/106 ,  C09D11/30 ,  C09D11/32 ,  C09D11/36

摘要： The present disclosure is drawn to coalescent inks and material sets, such as for 3D printing. In one example, the coalescent ink can include a conjugated polymer, a colorant imparting a visible color to the coalescent ink, and an ink vehicle comprising a high boiling point co-solvent having a boiling point of 250° C. or greater. The high boiling point co-solvent can be present in an amount from about 1 wt % to about 4 wt % with respect to the coalescent ink.

公开(公告)号：US20230373157A1

公开(公告)日：2023-11-23

申请号：US18228526

申请日：2023-07-31

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 ,  B33Y10/00 ,  B29C64/112 ,  B33Y70/10 ,  B33Y70/00 ,  B29K77/00 ,  B29K105/16 ,  B29K505/14 ,  B29K105/00 ,  B29C64/20 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29K507/04

CPC分类号： B29C64/165 ,  B33Y10/00 ,  B29C64/112 ,  B33Y70/10 ,  B33Y70/00 ,  B29K2077/00 ,  B29K2105/162 ,  B29K2505/14 ,  B29K2995/0005 ,  B29K2105/0023 ,  B29C64/20 ,  B29C64/393 ,  B29K2105/005 ,  B33Y30/00 ,  B33Y50/02 ,  B29K2105/0032 ,  B29K2507/04

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：US20190054699A1

公开(公告)日：2019-02-21

申请号：US15770476

申请日：2016-02-08

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

发明人： Yan ZHAO ,  Aja HARTMAN ,  Lihua ZHAO

IPC分类号： B29C64/393 ,  B33Y50/02 ,  B33Y40/00 ,  B29C64/165 ,  B33Y10/00

摘要： Examples include an apparatus for generating a three-dimensional object. The apparatus comprises at least one energy source, at least one build layer temperature sensor, and a controller. The controller is to control the at least one energy source to pre-fuse a portion of a build layer in a build area when a build layer temperature is less than a first temperature threshold. The controller is further to, after pre-fusing the portion of the build layer, control the at least one energy source to fuse the portion of the build layer in the build area when the build layer temperature is less than a second threshold.

公开(公告)号：US20170274593A1

公开(公告)日：2017-09-28

申请号：US15518477

申请日：2014-12-15

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

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

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

摘要： 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.