公开(公告)号：US10240059B2

公开(公告)日：2019-03-26

申请号：US15039816

申请日：2013-12-06

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

Inventor： Yan Zhao ,  Howard S. Tom ,  Hou T. Ng

IPC: C09D11/54 ,  B41M5/00 ,  B41M7/00 ,  C09D133/26 ,  C08F2/22 ,  B41J2/01 ,  C09D11/107 ,  C09D133/08 ,  C08F220/18

Abstract: A cationic latex fixative for ink applications is provided. The cationic latex fixative derived from a combination of a cationic monomer, a nonionic monomer that provides softness to the latex, and a nonionic monomer that provide stiffness to the latex. A method of manufacturing the fixative and a method of printing the fixative are also provided.

公开(公告)号：US20180072585A1

公开(公告)日：2018-03-15

申请号：US15816930

申请日：2017-11-17

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

Inventor： Yan Zhao ,  Howard S. Tom ,  Hou T. Ng

IPC: C01G23/053 ,  C09D17/00 ,  C09D11/322 ,  C09D11/102 ,  C09D11/023 ,  C09D7/12 ,  C09D5/02 ,  C09C1/36 ,  C09C1/00 ,  C08K3/22

CPC classification number: C01G23/053 ,  C01G23/0532 ,  C01P2004/01 ,  C01P2004/34 ,  C01P2004/62 ,  C01P2006/11 ,  C08K2003/2241 ,  C09C1/00 ,  C09C1/3676 ,  C09D5/028 ,  C09D7/61 ,  C09D11/023 ,  C09D11/102 ,  C09D11/322 ,  C09D17/00 ,  C09D17/008

Abstract: A method for manufacturing low effective density TiO2 includes providing a template having a surface. The template surface is coated with a titanium-containing compound that can be reduced to TiO2 at high temperature. The template is removed, thereby forming porous TiO2 particles. The effective density of the porous TiO2 particles is less than 4.

公开(公告)号：US20170305066A1

公开(公告)日：2017-10-26

申请号：US15513483

申请日：2014-09-26

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

Inventor： Krzysztof Nauka ,  Sivapackia Ganapathiappan ,  Lihua Zhao ,  Howard S. Tom ,  Yan Zhao ,  Hou T. Ng ,  James Elmer Abbott, Jr. ,  Alexander Govyadinov ,  Vladek Kasperchik

IPC: B29C64/264 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/393

CPC classification number: B29C64/264 ,  B29C64/165 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

Abstract: In one example, a non-transitory processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to expose build material to a light source emitting monochromatic light within a band of wavelengths that includes a peak light absorption of a liquid coalescing agent to be dispensed on to the build material.

公开(公告)号：US20170239889A1

公开(公告)日：2017-08-24

申请号：US15506572

申请日：2014-09-26

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

Inventor： Sivapackia Ganapathiappan ,  Howard S. Tom ,  Lihua Zhao ,  Krzysztof Nauka ,  Yan Zhao ,  Hou T. Ng

IPC: B29C67/00 ,  C09D11/102 ,  C09D11/037 ,  C09D11/033 ,  B33Y10/00 ,  B33Y70/00

Abstract: The present disclosure is drawn to coalescent inks and material sets for 3D printing. The coalescent ink can include an organic-soluble near-infrared dye having a peak absorption wavelength from 800 nm to 1400 nm. The coalescent ink can also in water and an organic co-solvent.

公开(公告)号：US09683113B2

公开(公告)日：2017-06-20

申请号：US13668510

申请日：2012-11-05

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

Inventor： Sivapackia Ganapathiappan ,  Hou T. Ng ,  Howard S. Tom

IPC: C09D11/322 ,  C08K9/10 ,  C09D7/12 ,  C09C1/46 ,  C09C1/48 ,  C09C3/10 ,  C09D11/324 ,  C09D11/326

CPC classification number: C09D7/1225 ,  C09C1/46 ,  C09C1/48 ,  C09C3/10 ,  C09D7/62 ,  C09D11/324 ,  C09D11/326

Abstract: Pigment particles containing a vinyl group are encapsulated by a cross-linked polymer, wherein the polymer has a dielectric constant of 2.8 or more. An inkjet ink containing the pigment particles is also described.

公开(公告)号：US20170029647A1

公开(公告)日：2017-02-02

申请号：US15039816

申请日：2013-12-06

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

Inventor： Yan Zhao ,  Howard S. Tom ,  Hou T. Ng

IPC: C09D11/54 ,  C09D133/08 ,  C09D11/107 ,  B41J2/01

CPC classification number: C09D11/54 ,  B41J2/01 ,  B41M5/0017 ,  B41M7/0018 ,  C08F2/22 ,  C08F220/18 ,  C09D11/107 ,  C09D133/08 ,  C09D133/26

Abstract: A cationic latex fixative for ink applications is provided. The cationic latex fixative derived from a combination of a cationic monomer, a nonionic monomer that provides softness to the latex, and a nonionic monomer that provide stiffness to the latex. A method of manufacturing the fixative and a method of printing the fixative are also provided.

Abstract translation: 提供了一种用于油墨应用的阳离子胶乳固定剂。 衍生自阳离子单体，为胶乳提供柔软性的非离子单体和为胶乳提供刚性的非离子单体的组合的阳离子胶乳固定剂。 还提供了制造固定剂的方法和印刷固定剂的方法。

公开(公告)号：US09394453B2

公开(公告)日：2016-07-19

申请号：US14892560

申请日：2013-05-30

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

Inventor： Hou T. Ng ,  Howard S. Tom

IPC: C09D11/322 ,  C09D11/38 ,  C09D11/106 ,  C09D121/02 ,  B41J2/21 ,  C08K3/26

CPC classification number: C09D11/322 ,  B41J2/211 ,  B41J2/2114 ,  B41J2/2117 ,  C08K3/26 ,  C08K2003/265 ,  C09D11/106 ,  C09D11/38 ,  C09D121/02

Abstract: A white inkjet ink includes an anionic surfactant having a molecular weight less than 10,000, a white pigment, a latex particle, and a balance of water. The white pigment has i) a density less than 3 g/cm3, and ii) a substantially constant particle size over a predetermined time period. The substantially constant particle size ranges from about 100 nm to about 300 nm.

Abstract translation: 白色喷墨油墨包括分子量小于10,000的阴离子表面活性剂，白色颜料，胶乳颗粒和余量的水。 白色颜料具有i）小于3g / cm 3的密度，和ii）在预定时间段内基本上恒定的粒径。 基本恒定的粒度范围为约100nm至约300nm。

公开(公告)号：US11673314B2

公开(公告)日：2023-06-13

申请号：US16253007

申请日：2019-01-21

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

Inventor： Krzysztof Nauka ,  Esteve Comas ,  Alejandro Manuel De Pena ,  Howard S. Tom ,  Hou T. Ng

IPC: B29C64/00 ,  B29C64/165 ,  B29C64/386 ,  B29C35/16 ,  B29C35/08 ,  B29C64/40 ,  B33Y30/00 ,  B33Y10/00

CPC classification number: B29C64/00 ,  B29C35/0805 ,  B29C35/16 ,  B29C64/165 ,  B29C64/386 ,  B29C64/40 ,  B29C2035/0822 ,  B29C2035/0838 ,  B29C2035/1616 ,  B33Y10/00 ,  B33Y30/00

Abstract: In one example, an apparatus for generating a three-dimensional object includes an energy source to apply energy to a layer of build material to cause a first portion of the layer to coalesce and solidify, an agent distributor to selectively deliver a cooling agent onto a second portion of the layer, and a controller to control the energy source to apply energy to the layer to cause the first portion to coalesce and solidify in a first pattern and to control the agent distributor to selectively deliver the cooling agent onto the second portion of the layer in a second pattern independent of the first pattern.

公开(公告)号：US20220362992A1

公开(公告)日：2022-11-17

申请号：US17878616

申请日：2022-08-01

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

Inventor： James Elmer Abbott, JR. ,  Alexander Govyadinov ,  Vladek Kasperchik ,  Krzysztof Nauka ,  Sivapackia Ganapathiappan ,  Lihua Zhao ,  Howard S. Tom ,  Yan Zhao ,  Hou T. Ng

IPC: B29C64/165 ,  B33Y30/00 ,  B29C64/291 ,  B29C64/277 ,  B29C64/264 ,  B29C64/268 ,  B29C35/08 ,  B29C67/00

Abstract: In one example, a lighting device for an additive manufacturing machine includes first light sources each to emit monochromatic light within a first band of wavelengths that includes a peak light absorption of a liquid coalescing agent and second light sources each to emit monochromatic light within a second band of wavelengths different from the first band of wavelengths. Each of the first light sources or each of multiple groups of the first light sources is individually addressable to emit monochromatic light independent of any other of the first light sources or of any other group of the first light sources and each of the second light sources or each of multiple groups of the second light sources is individually addressable to emit monochromatic light independent of any other of the second light sources or of any other group of the second light sources.

公开(公告)号：US11414561B2

公开(公告)日：2022-08-16

申请号：US16488662

申请日：2017-10-24

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

Inventor： Paul Olubummo ,  Lihua Zhao ,  Aja Hartman ,  Howard S. Tom

IPC: C09D11/38 ,  B33Y70/00 ,  B29C64/314 ,  B33Y40/10 ,  C07F15/04 ,  C09D11/033

Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.