公开(公告)号：US20210062025A1

公开(公告)日：2021-03-04

申请号：US16497520

申请日：2017-06-09

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

Inventor： Natalie Harvey ,  Jennifer Wu ,  Thomas W. BUTLER ,  Vladimir JAKUBEK

IPC: C09D11/324 ,  C09D11/102 ,  B41M5/00 ,  B41J2/175

Abstract: The present disclosure is drawn to an inkjet printing system including an ink composition and a microfluidic ejection assembly. The ink composition can include carbon black pigment, from 50 wt % to 80 wt % water, from 10 wt % to 40 wt % of an organic solvent system, and from 0.5 wt % to 6 wt % polyurethane. The microfluidic ejection assembly can include a drop generator for externally ejecting the ink composition, and a fluid pump for internally inducing microfluidic recirculation flow of the ink composition into the drop generator.

公开(公告)号：US20220119658A1

公开(公告)日：2022-04-21

申请号：US17294063

申请日：2019-06-07

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

Inventor： Natalie Harvey

IPC: C09D11/107 ,  B33Y10/00 ,  C09D11/033 ,  C09D11/322 ,  B33Y70/10 ,  B22F10/14 ,  B22F1/10 ,  C09D11/037

Abstract: The present disclosure relates to a binding agent for printing a 3D green body object. The binding agent includes from about 0.3 wt % to about 3 wt % adhesion promoter including an aromatic maleic anhydride-containing copolymer, from about 2 wt % to about 20 wt % a (meth)acrylic latex binder, from about 10 wt % to about 40 wt % solvent package including from about 3 wt % to about 40 wt % of a coalescing solvent, and from about 40 wt % to about 88 wt % water. The weight percentage ranges are based on total content of the binding agent.

公开(公告)号：US20180010003A1

公开(公告)日：2018-01-11

申请号：US15543434

申请日：2015-01-30

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

Inventor： Sundar Vasudevan ,  Natalie Harvey ,  Richard J. McManus ,  Vladimir Jakubek

IPC: C09D11/106 ,  C09D11/322 ,  C08F222/06 ,  B41J2/175 ,  C09D11/38 ,  C08F210/10 ,  C08K5/1515

CPC classification number: C09D11/106 ,  B41J2/17503 ,  C08F210/10 ,  C08F222/06 ,  C08F2500/09 ,  C08F2810/40 ,  C08K5/1515 ,  C09D11/30 ,  C09D11/322 ,  C09D11/38

Abstract: An ink composition includes water, a co-solvent, a colorant, and a modified polymer or copolymer additive. The modified polymer or copolymer additive is selected from the group consisting of i) a hydrolyzed poly(isobutylene-alt-maleic anhydride), ii) a hydrolyzed poly(maleic anhydride-alt-1-octadecene), and iii) a modified polymer or copolymer. The modified polymer or copolymer includes a repeating unit of a backbone chain, and a long chain pendant group attached to a carbon atom of the repeating unit. In the backbone chain, the long chain pendant group of the repeating unit is separated by fewer than 8 spacer carbon atoms from another long chain pendant group of an adjacent repeating unit.

公开(公告)号：US20230040170A1

公开(公告)日：2023-02-09

申请号：US17788364

申请日：2020-01-10

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

Inventor： Natalie Harvey ,  Vladek Kasperchik ,  Emily Register

IPC: C09D7/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B22F10/14 ,  C09D7/20 ,  C09D7/61

Abstract: A three-dimensional printing kit can include a wetting agent, a binding agent, and a particulate build material. The wetting agent an include water, from about 5 wt % to about 60 wt % organic co-solvent, and from about 0.1 wt % to about 10 wt% surfactant. The binding agent can include from about 2 wt % to about 25 wt % polymer binder and a liquid vehicle. The particulate build material can include from about 80 wt % to 100 wt % metal particles that can have a D50 particle size ranging from about 2 gm to about 150 μm.

公开(公告)号：US20220275204A1

公开(公告)日：2022-09-01

申请号：US17637595

申请日：2019-10-11

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

Inventor： Tienteh Chen ,  Natalie Harvey ,  Cory J. Ruud ,  Vladek Kasperchik

IPC: C08L71/02 ,  B22F10/14 ,  B22F1/103

Abstract: The present disclosure describes binder agents for printing three-dimensional green body objects, which can include water, an organic co-solvent, a nonionic surfactant, a dihydrazide compound, and latex particles. The nonionic surfactant can include two hydrophilic head groups and two hydrophobic tail groups per molecule.

公开(公告)号：US11279840B2

公开(公告)日：2022-03-22

申请号：US16497593

申请日：2017-05-24

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

Inventor： Thomas W. Butler ,  Natalie Harvey ,  Vladimir Jakubek

IPC: C09D11/38 ,  C09D11/102 ,  B41J2/17 ,  C09D11/324

Abstract: An ink composition can include carbon black pigment, from 50 wt % to 80 wt % water, from 15 wt % to 35 wt % organic solvent, from 0.25 wt % to 9 wt % free latex particles having an average particles size from 50 nm to 500 nm, from 0.1 wt % to 1 wt % C10 to C20 fatty acid, and lithium.

公开(公告)号：US10414928B2

公开(公告)日：2019-09-17

申请号：US15543434

申请日：2015-01-30

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

Inventor： Sundar Vasudevan ,  Natalie Harvey ,  Richard J. McManus ,  Vladimir Jakubek

IPC: B41J2/175 ,  C08F2/10 ,  C08F222/06 ,  C08K5/1515 ,  C09D11/106 ,  C09D11/322 ,  C09D11/38 ,  C09D11/30 ,  C08F210/10

Abstract: An ink composition includes water, a co-solvent, a colorant, and a modified polymer or copolymer additive. The modified polymer or copolymer additive is selected from the group consisting of i) a hydrolyzed poly(isobutylene-alt-maleic anhydride), ii) a hydrolyzed poly(maleic anhydride-alt-1-octadecene), and iii) a modified polymer or copolymer. The modified polymer or copolymer includes a repeating unit of a backbone chain, and a long chain pendant group attached to a carbon atom of the repeating unit. In the backbone chain, the long chain pendant group of the repeating unit is separated by fewer than 8 spacer carbon atoms from another long chain pendant group of an adjacent repeating unit.

公开(公告)号：US12172212B2

公开(公告)日：2024-12-24

申请号：US17298922

申请日：2019-06-07

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

Inventor： Natalie Harvey

IPC: C09D11/023 ,  B22F1/10 ,  B22F1/103 ,  B22F1/107 ,  B22F10/14 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/10 ,  C09D11/033 ,  C09D11/037 ,  C09D11/107 ,  C09D11/322

Abstract: The present disclosure relates to a binding agent for printing a 3D green body object. The binding agent includes from about 0.3 wt % to about 3 wt % multi-functional carboxylic acid having a weight average molecular weight range from about 100 MW to about 1,000 MW, from about 2 wt % to about 20 wt % a (meth)acrylic latex binder, from about 10 wt % to about 40 wt % solvent package including from about 3 wt % to about 40 wt % of a coalescing solvent, and from about 40 wt % to about 88 wt % water. The weight percentage ranges are based on total content of the binding agent.

公开(公告)号：US20220032373A1

公开(公告)日：2022-02-03

申请号：US17052561

申请日：2019-03-15

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

Inventor： Cory J. Ruud ,  Vladek Kasperchik ,  Natalie Harvey

IPC: B22F10/14 ,  C09D11/107 ,  C09D11/38

Abstract: Described herein are compositions, kits, methods, and systems for printing metal three-dimensional objects. In an example, described is a binding fluid composition for three-dimensional printing, the composition comprising: an aqueous liquid vehicle comprising at least one diol; and latex polymer particles dispersed in the aqueous liquid vehicle.

公开(公告)号：US11066566B2

公开(公告)日：2021-07-20

申请号：US16497520

申请日：2017-06-09

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

Inventor： Natalie Harvey ,  Jennifer Wu ,  Thomas W. Butler ,  Vladimir Jakubek

IPC: B41J2/175 ,  C09D11/324 ,  B41M5/00 ,  C09D11/102

Abstract: The present disclosure is drawn to an inkjet printing system including an ink composition and a microfluidic ejection assembly. The ink composition can include carbon black pigment, from 50 wt % to 80 wt % water, from 10 wt % to 40 wt % of an organic solvent system, and from 0.5 wt % to 6 wt % polyurethane. The microfluidic ejection assembly can include a drop generator for externally ejecting the ink composition, and a fluid pump for internally inducing microfluidic recirculation flow of the ink composition into the drop generator.