公开(公告)号：US11926101B2

公开(公告)日：2024-03-12

申请号：US17418791

申请日：2019-05-03

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

Inventor： Jacob Wright ,  Matthew A. Shepherd ,  Vanessa Verzwyvelt ,  Xin Cheng

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

CPC classification number: B29C64/393 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, may cause the processor to identify a property of a portion of a three-dimensional (3D) part to be fabricated and determine, based on the identified property, a thermal value associated with the portion. The instructions may also cause the processor to, based on the determined thermal value, determine a first agent composition to be used to fabricate the portion and determine a second agent composition to be used to fabricate a section external and adjacent to the portion, in which the first agent composition and the second agent composition may be determined to cause the portion and the external section to be fabricated to have the identified property while maintaining the external section separate from the portion.

公开(公告)号：US20230081448A1

公开(公告)日：2023-03-16

申请号：US17799699

申请日：2020-03-04

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Jacob Wright ,  Graciela Emma Negri Jimenez

IPC: C09D11/38 ,  B29C64/165 ,  B33Y70/00 ,  B33Y10/00 ,  C09D11/037 ,  C09D11/033 ,  C09D11/106 ,  C09D11/322

Abstract: This disclosure describes hydrogel three-dimensional printing kits, methods of three-dimensional printing hydrogels, and hydrogel three-dimensional printing systems. In one example, a hydrogel three-dimensional printing kit can include a particulate build material, a crosslinking agent, a whitening agent, and a coloring agent. The particulate build material can include a polyhydroxylated swellable polymer. The crosslinking agent can include water and a crosslinker that is reactive with hydroxyl groups of the polyhydroxylated swellable polymer to crosslink the polyhydroxylated swellable polymer. The whitening agent can include water and a dispersed white pigment. The coloring agent can include water and a colorant.

公开(公告)号：US20220097309A1

公开(公告)日：2022-03-31

申请号：US17418791

申请日：2019-05-03

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

Inventor： Jacob Wright ,  Matthew A. Shepherd ,  Vanessa Verzwyvelt ,  Xin Cheng

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

Abstract: According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, may cause the processor to identify a property of a portion of a three-dimensional (3D) part to be fabricated and determine, based on the identified property, a thermal value associated with the portion. The instructions may also cause the processor to, based on the determined thermal value, determine a first agent composition to be used to fabricate the portion and determine a second agent composition to be used to fabricate a section external and adjacent to the portion, in which the first agent composition and the second agent composition may be determined to cause the portion and the external section to be fabricated to have the identified property while maintaining the external section separate from the portion.

公开(公告)号：US12091566B2

公开(公告)日：2024-09-17

申请号：US17799699

申请日：2020-03-04

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Jacob Wright ,  Graciela Emma Negri Jimenez

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/106 ,  C09D11/322 ,  C09D11/38 ,  B29K105/00 ,  B29K105/24

CPC classification number: C09D11/38 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/106 ,  C09D11/322 ,  B29K2105/0032 ,  B29K2105/24 ,  B29K2105/251

Abstract: This disclosure describes hydrogel three-dimensional printing kits, methods of three-dimensional printing hydrogels, and hydrogel three-dimensional printing systems. In one example, a hydrogel three-dimensional printing kit can include a particulate build material, a crosslinking agent, a whitening agent, and a coloring agent. The particulate build material can include a polyhydroxylated swellable polymer. The crosslinking agent can include water and a crosslinker that is reactive with hydroxyl groups of the polyhydroxylated swellable polymer to crosslink the polyhydroxylated swellable polymer. The whitening agent can include water and a dispersed white pigment. The coloring agent can include water and a colorant.

公开(公告)号：US11939484B2

公开(公告)日：2024-03-26

申请号：US17298927

申请日：2019-06-10

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

Inventor： Graciela E. Negri Jimenez ,  Michael A. Novick ,  Tienteh Chen ,  Jacob Wright

IPC: C09D11/54 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C08K5/5415 ,  C09D11/102 ,  B29K83/00

CPC classification number: C09D11/54 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C08K5/5415 ,  C09D11/102 ,  B29K2083/00

Abstract: A multi-fluid kit for three-dimensional printing can include a fusing agent with water and a radiation absorber, and a detailing agent. The radiation absorber can absorb radiation energy and converts the radiation energy to heat. The detailing agent can include water and from about 0.1 wt % to about 20 wt % organosilanes based on a total weight of the detailing agent, wherein the organosilanes include an organosilane compound with a central silicon having both a water-solubilizing group and multiple hydrolyzable groups attached thereto.

公开(公告)号：US20220118709A1

公开(公告)日：2022-04-21

申请号：US17418790

申请日：2019-07-08

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

Inventor： Matthew A. Shepherd ,  Morgan T. Schramm ,  Vanessa Verzwyvelt ,  Dennis J Schissler ,  Xin Cheng ,  Jacob Wright

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/343 ,  B33Y50/02

Abstract: In an example, a method includes segmenting, using a processor, a virtual volume comprising a representation of at least a part of an object to be generated in additive manufacturing. The virtual volume may be segmented into a plurality of segments and the object may be intended to have a first color. Additive manufacturing control instructions may be determined for the segments. The additive manufacturing control instructions may comprise instructions for distributing the print agent composition and the additive manufacturing control instructions for each segment may be determined based on the thermal properties of a print agent composition intended to provide the first color to compensate for variations in object dimensions associated with the thermal properties.

公开(公告)号：US10759112B2

公开(公告)日：2020-09-01

申请号：US16074448

申请日：2017-08-30

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

Inventor： Stephen G. Rudisill ,  Alexey S. Kabalnov ,  Jacob Wright ,  Hector Jose Lebron

IPC: B27N3/02 ,  B29C64/165 ,  B33Y70/00 ,  B33Y10/00 ,  C09D11/322 ,  C09D11/328 ,  B82Y30/00 ,  B29C37/00 ,  B29C64/264 ,  B33Y80/00 ,  C09D11/324 ,  B29K105/00 ,  B29K509/00 ,  B29K33/04

Abstract: Disclosed herein is a three-dimensional printing method comprising: applying a build material; applying on, at least, a portion of the build material, a low tint fusing agent composition comprising metal oxide nanoparticles dispersed in a liquid vehicle; and exposing the build material to radiations to fuse the portion of the build material in contact with the low tint fusing agent composition in order to form a layer of a 3D object. Also disclosed herein is an article obtained according to the three-dimensional printing method described herein. Such articles comprises a core substrate made of a polymeric build material that has been fused with a core fusing agent composition; a first layer, applied on the surface of the core substrate, comprising a polymeric build material fused with a low tint fusing agent composition including metal oxide nanoparticles dispersed in a liquid vehicle; and a second layer, applied over the surface of the first layer, comprising a polymeric build material fused with a colored ink composition and a core fusing agent or with a low tint fusing agent composition colored ink composition.

公开(公告)号：US12240169B2

公开(公告)日：2025-03-04

申请号：US17777802

申请日：2019-12-13

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

Inventor： Emre Hiro Discekici ,  Graciela Emma Negri Jimenez ,  Shannon Reuben Woodruff ,  Alay Yemane ,  Jacob Wright

IPC: B29C64/165 ,  B29C64/188 ,  B29C64/30 ,  B29C64/357 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  B33Y99/00 ,  C09D11/322 ,  C09D11/38 ,  C09D11/40 ,  C09D11/50 ,  G01N21/78 ,  G01N21/91 ,  G01N21/94 ,  B29K77/00 ,  B29K105/00

Abstract: This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of testing powder bed material for contamination. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detector solution. The fusing agent can include water, an electromagnetic radiation absorber, and a first pigment reactant. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The detector solution can include water and a second pigment reactant. The second pigment reactant can be reactive with the first pigment reactant to form a colored pigment.

公开(公告)号：US20230219291A1

公开(公告)日：2023-07-13

申请号：US17997164

申请日：2020-04-30

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Graciela Emma Negri Jimenez ,  Carolin Fleischmann ,  Jacob Wright

IPC: B29C64/165 ,  B33Y70/00 ,  C09D11/328 ,  C09D11/38 ,  C09D11/023 ,  C09D11/037 ,  C09D11/033 ,  C09D11/106

CPC classification number: B29C64/165 ,  B33Y70/00 ,  C09D11/328 ,  C09D11/38 ,  C09D11/023 ,  C09D11/037 ,  C09D11/033 ,  C09D11/106 ,  B29K2105/24

Abstract: Hydrogel three-dimensional printing kits, methods of three-dimensional printing and three-dimensional printed hydro-gels are described. In one example, a three-dimensional printing kit can comprise a particulate build material, a crosslinking agent and a structural modifier. The particulate build material may comprise a polyhydroxylated polymer having hydroxyl groups. The crosslinking gent is for crosslinking the polyhydroxylated polymer by a reaction with the hydroxyl groups. The structural modifier can have a plurality of functional groups for forming a network within the hydrogel, and where the structural modifier may have a reactivity that is chemically orthogonal to the reaction with the hydroxyl groups for crosslinking the polyhydroxylated polymer.

公开(公告)号：US20220314534A1

公开(公告)日：2022-10-06

申请号：US17633641

申请日：2019-10-11

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

Inventor： Graciela Emma Negri Jimenez ,  Emre Hiro Discekici ,  Jacob Wright ,  Shannon Reuben Woodruff

IPC: B29C64/165 ,  C09D11/107 ,  C09D11/102 ,  C09D11/023 ,  C09D183/04 ,  B33Y70/00 ,  B33Y10/00

Abstract: The present disclosure describes multi-fluid kits for three-dimensional 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 hydrophobizing agent, and a hydrophilizing agent. The fusing agent can include water and an electromagnetic radiation absorber, wherein the electromagnetic radiation absorber absorbs radiation energy and converts the radiation energy to heat. The hydrophobizing agent can include water and a hydrophobic additive including a first polymer having a hydrophobic group, a monomer that is polymerizable to form a first polymer having a hydrophobic group, or a combination thereof. The hydrophilizing agent can include water and a hydrophilic additive including a second polymer having a hydrophilic group.