公开(公告)号：US20180086933A1

公开(公告)日：2018-03-29

申请号：US15561712

申请日：2015-07-20

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

Inventor： Vladek Kasperchik ,  Paul Joseph Bruinsma ,  Thomas W. Butler

IPC: C09D11/54 ,  C09D11/38 ,  C09D11/326 ,  C09D11/106 ,  C09C3/06

CPC classification number: C09D11/54 ,  C01P2004/62 ,  C01P2004/64 ,  C09C1/00 ,  C09C1/043 ,  C09C1/3661 ,  C09C1/3669 ,  C09C1/3692 ,  C09C3/063 ,  C09D11/106 ,  C09D11/322 ,  C09D11/326 ,  C09D11/38

Abstract: The present disclosure provides an example where a non-Newtonian white ink can include an aqueous ink vehicle, from 5 wt % to 60 wt % of white colorant, and from 0.1 wt % to 5 wt % of amphoteric alumina particles dispersed in the aqueous ink vehicle. The white colorant can include white metal oxide pigment having an average particulate size from 100 nm to 2,000 nm, an alumina coating on the white metal oxide pigment forming an alumina-coated pigment, and a polymeric dispersant associated with a surface of the alumina-coated pigment. The amphoteric alumina particles can have an average particles size from 2 nm to less than 100 nm.

公开(公告)号：US20180002555A1

公开(公告)日：2018-01-04

申请号：US15544219

申请日：2015-04-27

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

Inventor： Vladek Kasperchik ,  Thomas W. Butler ,  Paul Joseph Bruinsma

IPC: C09D11/38 ,  C09D11/322 ,  C09D11/107

CPC classification number: C09D11/38 ,  C09D11/106 ,  C09D11/107 ,  C09D11/322 ,  C09D11/326 ,  C09D11/54

Abstract: The present disclosure provides a white ink including an aqueous ink vehicle, from 5 wt % to 50 wt % of a white metal oxide pigment having an average particulate size from 100 nm to 2,000 nm, from 0.1 wt % to 4 wt % of anionic oxide particulates having an average particulate size from 1 nm to 100 nm, from 2 wt % to 30 wt % of latex particulates having a glass transition temperature from 0 C to 130 C, and a non-ionic or predominantly non-ionic dispersant having an acid number not higher than 100 mg KOH/g based on dry polymer weight. The white metal oxide pigment and anionic oxide particulates are present in the white ink at a weight ratio from 5:1 to 200:1.

公开(公告)号：US20170362456A1

公开(公告)日：2017-12-21

申请号：US15544578

申请日：2015-05-29

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

Inventor： Paul Joseph Bruinsma ,  Vladek Kasperchik ,  Thomas W. Butler

IPC: C09D17/00 ,  C09C1/36 ,  C09D11/107 ,  C09D11/54 ,  C09D11/322

CPC classification number: C09D17/001 ,  C01P2004/62 ,  C01P2006/22 ,  C09C1/00 ,  C09C1/043 ,  C09C1/3607 ,  C09C1/3669 ,  C09C1/3676 ,  C09C3/00 ,  C09D11/102 ,  C09D11/107 ,  C09D11/322 ,  C09D11/40 ,  C09D11/54 ,  C09D17/008

Abstract: The present disclosure provides white pigment dispersions, which can include an aqueous liquid vehicle, and from 5 wt % to 70 wt % of a white metal oxide pigment dispersed by two co-dispersants. The metal oxide pigment can have an average particulate size from 100 nm to 1 μm, and the co-dispersants can include both i) a short-chain anionic dispersant having a weight average molecular weight ranging from 1,000 Mw to 30,000 Mw, and ii) a non-ionic or predominantly non-ionic dispersant.

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：US20170051169A1

公开(公告)日：2017-02-23

申请号：US15119230

申请日：2014-03-20

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

Inventor： Vladek Kasperchik ,  Phillip C. Cagle ,  David Michael Ingle ,  Paul Joseph Bruinsma

IPC: C09D11/322 ,  B41M7/00 ,  B41J11/00 ,  B41M5/00 ,  C09D11/10 ,  B41J2/01

CPC classification number: C09D11/322 ,  B41J2/01 ,  B41J11/002 ,  B41M3/00 ,  B41M5/0023 ,  B41M7/009 ,  C09D11/10

Abstract: The present disclosure provides a white ink comprising an aqueous ink vehicle, a white colorant, and latex particles. The colorant can consist essentially of metal oxide particles present at from 2 wt % to 50 wt %, can have an average particle size from 100 nm to 1000 nm, and can have a high refractive index from 1.8 to 2.8. The latex can be present in the ink at from 2 wt % to 20 wt %, can have a glass transition temperature from 0° C. to 130° C., and can have a low refractive index from 1.3 to 1.6. The metal oxide particles and latex particles can be present in the white ink at weight ratio is from 6:1 to 1:3.

Abstract translation: 本公开提供了一种包含水性墨水载体，白色着色剂和胶乳颗粒的白色墨水。 着色剂基本上可以以2重量％至50重量％存在的金属氧化物颗粒组成，其平均粒度可以为100nm至1000nm，并且可以具有1.8至2.8的高折射率。 胶乳可以以2重量％至20重量％存在于油墨中，可以具有0℃至130℃的玻璃化转变温度，并且可以具有1.3至1.6的低折射率。 金属氧化物颗粒和胶乳颗粒可以以6:1至1:3的重量比存在于白色油墨中。

公开(公告)号：US12042859B2

公开(公告)日：2024-07-23

申请号：US16605123

申请日：2018-04-12

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

Inventor： Tienteh Chen ,  Vladek Kasperchik

IPC: B22F1/10 ,  B22F1/05 ,  B22F1/102 ,  B22F1/16 ,  B22F10/10 ,  B22F10/14 ,  B22F10/73 ,  B29C64/165 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/10 ,  C08F2/22 ,  C08F212/08 ,  C08F220/14 ,  C08K3/11 ,  C09D11/037 ,  C09D11/322 ,  C09D11/38 ,  B22F10/28 ,  B82Y30/00

CPC classification number: B22F1/10 ,  B22F1/05 ,  B22F1/102 ,  B22F1/16 ,  B22F10/10 ,  B22F10/14 ,  B22F10/73 ,  B29C64/165 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/10 ,  C08F2/22 ,  C08F212/08 ,  C08F220/14 ,  C08K3/11 ,  C09D11/037 ,  C09D11/322 ,  C09D11/38 ,  B22F10/28 ,  B22F2304/10 ,  B22F2998/10 ,  B82Y30/00 ,  B22F2998/10 ,  B22F10/14 ,  B22F3/1021 ,  B22F2998/10 ,  B22F10/14 ,  B22F3/10

Abstract: An example of a composition includes a host metal present in an amount of at least about 90 wt % based on a total weight of the composition. A flow additive is also present in an amount of less than about 10 wt % based on the total weight of the composition. The flow additive consists of an organic particle having crosslinked polymer chains, a glass transition temperature (Tg) of at least 90° C., and a primary particle diameter of 100 nm or less.

公开(公告)号：US20240131781A1

公开(公告)日：2024-04-25

申请号：US18400914

申请日：2023-12-29

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

Inventor： Vladek Kasperchik ,  Krzysztof Nauka ,  David Michael Ingle

IPC: B29C64/165 ,  B22F10/14 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10

CPC classification number: B29C64/165 ,  B22F10/14 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B22F10/68 ,  B22F2201/01 ,  B22F2201/10

Abstract: Described herein are methods and systems for printing a three-dimensional object. In an example, a method for printing a three-dimensional object can comprise: (i) a metallic build material being applied; (ii) a binder fluid being applied on at least a portion of the metallic build material; (iii) the selectively applied binder fluid can be flash fused to bind the metallic build material and the selectively applied binder fluid by application of an energy flux having an energy density of from about 0.5 J/cm2 to about 20 J/cm2 for less than about 1 second. In the example, (i), (ii), and (iii) can be repeated at least one time to form the three-dimensional object. The binder fluid can comprise a liquid vehicle and polymer particles dispersed in the liquid vehicle

公开(公告)号：US11820906B2

公开(公告)日：2023-11-21

申请号：US17864075

申请日：2022-07-13

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

Inventor： Stephen G Rudisill ,  Vladek Kasperchik ,  Alexey S. Kabalnov ,  Shannon Reuben Woodruff ,  Thomas M. Sabo

IPC: C09D11/38 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09C3/08 ,  C09C1/00 ,  B82Y30/00

CPC classification number: C09D11/38 ,  B82Y30/00 ,  C09C1/00 ,  C09C3/08 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322

Abstract: An example of a dispersion includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and a balance of water. An example of a jettable composition includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, a surfactant, a co-solvent, and a balance of water. A method for improving the stabilization of a jettable composition includes incorporating a zwitterionic stabilizer in the jettable composition, which includes the cesium tungsten oxide nanoparticles, the surfactant, the co-solvent, and the balance of water.

公开(公告)号：US20230249258A1

公开(公告)日：2023-08-10

申请号：US18013450

申请日：2020-07-31

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

Inventor： Vladek Kasperchik ,  Jennifer L. Wu

IPC: B22F10/85 ,  B22F10/14 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B22F10/85 ,  B22F10/14 ,  B33Y30/00 ,  B33Y50/02

Abstract: According to examples, an apparatus may include a processor that may generate first print control data that may include instructions to deposit a binding liquid onto selected areas in an upper set of layers of build material particles. The processor may also determine areas in a lower set of layers of build material particles at which a non-binding liquid that does not include the binder to be deposited to define sections of a part enhancement section, the lower set of layers being within a predefined distance below the upper set of layers, in which the areas in the lower set of layers are based on the areas in the upper set of layers of build material particles at which the sections of the part are to be defined. The processor may further generate second print control data corresponding to the determined areas in the lower set of layers.

公开(公告)号：US20230219137A1

公开(公告)日：2023-07-13

申请号：US18125042

申请日：2023-03-22

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

Inventor： Mohammed S. Shaarawi ,  James McKinnell ,  Vladek Kasperchik ,  David A. Champion ,  Greg Scott Long

IPC: B22F10/14 ,  B29C64/165 ,  B22F10/64 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B33Y40/20

CPC classification number: B22F10/14 ,  B29C64/165 ,  B22F10/64 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10 ,  B33Y40/20

Abstract: In a three-dimensional printing method example, a liquid functional agent is selectively applied. The liquid functional agent includes an alloying agent. A metallic build material is applied. The liquid functional agent is selectively applied before the metallic build material, after the metallic build material, or both before and after the metallic build material. The liquid functional agent patterns the metallic build material to form a composite layer. At least some of the metallic build material is exposed to energy to melt the at least some of the metallic build material to form a layer. Upon contact or after energy exposure, the alloying agent and the build material alter a composition of the composite layer.