公开(公告)号：US11667766B2

公开(公告)日：2023-06-06

申请号：US16605274

申请日：2018-01-26

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

Inventor： Graciela Emma Negri Jimenez ,  Alexey S Kabalnov ,  Jacob Wright

IPC: C08K3/04 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/245 ,  B29C64/165 ,  C08J3/215 ,  C08K5/56 ,  B22F10/14 ,  B22F10/28 ,  B82Y40/00 ,  B22F12/13

CPC classification number: C08K3/04 ,  B22F10/14 ,  B22F10/28 ,  B29C64/165 ,  B29C64/245 ,  B33Y10/00 ,  B33Y70/00 ,  C08J3/215 ,  C08K5/56 ,  B22F12/13 ,  B82Y40/00 ,  C08J2477/12 ,  C08K2201/011 ,  C08K2201/017

Abstract: According to examples described herein, methods, compositions, and agents comprising an antistatic agent are described. According to one example, a fusing agent composition for three-dimensional printing can comprise: at least one antistatic agent in an amount of from about 0.01 wt % to about 20 wt % based on a total weight of the fusing agent composition, at least one near infrared absorbing compound, at least one surfactant, at least one organic solvent, and water.

公开(公告)号：US20230144669A1

公开(公告)日：2023-05-11

申请号：US17912617

申请日：2020-04-10

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

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

IPC: C08L101/14 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

CPC classification number: C08L101/14 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29K2105/0061

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 and an aqueous agent. The particulate build material can include from about 90 wt % to 100 wt % of a mixture of a powdered polyhydroxylated swellable polymer dry blended with powdered water-soluble crosslinker that is reactive with hydroxyl groups of the polyhydroxylated swellable polymer to crosslink the polyhydroxylated swellable polymer. The aqueous agent can include water and an organic co-solvent, and the aqueous agent may not include the crosslinker.

公开(公告)号：US20220274327A1

公开(公告)日：2022-09-01

申请号：US17637473

申请日：2019-10-22

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

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

IPC: B29C64/165 ,  B29C64/295

Abstract: A multi-fluid kits for three-dimensional printing can include a fusing agent and a tinted anti-coalescing agent. The fusing agent can include water and an electromagnetic radiation absorber that absorbs radiation energy and converts the radiation energy to heat. The tinted anti-coalescing agent can include an aqueous liquid vehicle, a colored dye dissolved in the aqueous liquid vehicle, and a polyelectrolyte. The polyelectrolyte can have a weight average molecular weight from about 1,000 Mw to about 8,000 Mw, the polyelectrolyte can be water-absorbent at a water to polyelectrolyte weight ratio from about 2:1 to about 1,000:1, and about 90 wt % to 100 wt % of the polyelectrolyte can be dissolved in the aqueous liquid vehicle.

公开(公告)号：US11384241B2

公开(公告)日：2022-07-12

申请号：US16499510

申请日：2018-01-26

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

Inventor： Graciela Emma Negri Jimenez ,  Alexey S Kabalnov ,  Jacob Wright

IPC: B33Y10/00 ,  B29C64/165 ,  B33Y80/00 ,  C08L77/06 ,  B33Y70/00 ,  B29K77/00 ,  B29K105/00

Abstract: According to examples described herein, methods, compositions, and parts comprising an antistatic agent are described. According to one example, a method of three-dimensional printing can comprise: (i) a layer of build material being deposited; (ii) a first fusing agent being selectively applied on the build material, wherein the first fusing agent can comprise at least one first antistatic agent; and (iii) repetition of (i) and (ii) at least once to form a core of a three-dimensional part.

公开(公告)号：US20220083023A1

公开(公告)日：2022-03-17

申请号：US17419032

申请日：2019-05-03

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

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

IPC: G05B19/4099

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 first orientation of a first surface portion of a three-dimensional (3D) model. The instructions may also cause the processor to, based on the identified first orientation of the first surface portion, determine a first thickness of a first section of a first geological region of the 3D model, the first section being adjacent to the first surface portion, in which a plurality of different orientations of 3D model surface portions are correlated to a plurality of different thicknesses. The instructions may further cause the processor to define the first section of the first geological region to have the determined first thickness.