公开(公告)号：US11577316B2

公开(公告)日：2023-02-14

申请号：US16080879

申请日：2018-02-23

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

Inventor： Vladek Kasperchik ,  David Michael Ingle ,  Cory J. Ruud

IPC: B22F10/14 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00 ,  B22F3/10 ,  B29C64/371 ,  B29C64/165 ,  C22C1/04 ,  B29C64/295 ,  B22F5/08 ,  B22F10/10

Abstract: Described herein are compositions, methods, and systems for printing metal three-dimensional objects. In an example, described is a method of printing a three-dimensional object comprising: (i) depositing a metal powder build material, wherein the metal powder build material has an average particle size of from about 10 μm to about 250 μm; (ii) selectively applying a binder fluid on at least a portion of the metal powder build material, wherein the binder fluid comprises an aqueous liquid vehicle and latex polymer particles dispersed in the aqueous liquid vehicle; (iii) heating the selectively applied binder fluid on the metal powder build material to a temperature of from about 40° C. to about 180° C.; and (iv) repeating (i), (ii), and (iii) at least one time to form the three-dimensional object.

公开(公告)号：US20220348780A1

公开(公告)日：2022-11-03

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

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：US20220267620A1

公开(公告)日：2022-08-25

申请号：US17626988

申请日：2019-09-05

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

Inventor： Vladek Kasperchik ,  Jennifer Wu ,  Michael G. Monroe

IPC: C09D11/033 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y40/20 ,  B22F10/14 ,  B28B1/00 ,  C09D11/107 ,  C09D11/037 ,  C09D11/322

Abstract: A multi-fluid kit for three-dimensional printing can include a wetting agent and a binding agent. The wetting agent can include from 0 wt % to about 49.8 wt % water, from about 0.5 wt % to about 30 wt % film-forming organic solvent that can have a boiling point from greater than about 100° C. to about 350° C., and from about 30 wt % to about 99.5 wt % amphiphilic solvent that can have a boiling point from about 45° C. to less than about 100° C. The amphiphilic solvent can be water-miscible and can be present in the wetting agent at a greater concentration than the water and at a greater concentration than the film-forming solvent. The binding agent can include from about 2 wt % to about 30 wt % of a polymer binder dispersed in an aqueous liquid vehicle.

公开(公告)号：US20220186057A1

公开(公告)日：2022-06-16

申请号：US17312674

申请日：2019-07-17

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

Inventor： Krzysztof Nauka ,  Vladek Kasperchik

IPC: C09D11/322 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/291 ,  C01G23/08 ,  C09D11/037 ,  C09D11/102

Abstract: This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and systems for three-dimensional printing. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detailing agent. The fusing agent can include water and metal oxide nanoparticles dispersed therein. The metal oxide nanoparticles can be selected from titanium dioxide, zinc oxide, cerium oxide, indium tin oxide, or a combination thereof. The metal oxide nanoparticles can have an average particle size from about 2 nm to about 500 nm. The detailing agent can include a detailing compound.

公开(公告)号：US20220080508A1

公开(公告)日：2022-03-17

申请号：US17421572

申请日：2019-04-29

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

Inventor： David Champion ,  Daniel Mosher ,  Vladek Kasperchik

IPC: B22F10/85 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/165 ,  B29C64/393 ,  B22F10/14 ,  B28B1/00 ,  B28B17/00

Abstract: In an example implementation, a method of determining liquid agent amounts in 3D printing includes measuring density levels of a build material at locations across a build material layer and determining if the measured density levels vary from expected density levels. For locations where measured density levels vary from expected density levels, an adjusted liquid agent dose is determined, and for locations where measured density levels do not vary from expected density levels, an expected liquid agent dose is determined. The adjusted and expected liquid agent doses are deposited onto the layer at locations corresponding with the adjusted and expected liquid agent doses.

公开(公告)号：US20210402468A1

公开(公告)日：2021-12-30

申请号：US17052860

申请日：2019-03-15

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

Inventor： Vladek Kasperchik ,  Krzysztof Nauka ,  Mohammed S. Shaarawi

IPC: B22F1/00 ,  B22F10/28 ,  B22F10/10

Abstract: Described herein are kits, methods, and systems for printing metal three-dimensional objects. In an example, described is a kit for three-dimensional printing comprising: powdered metal build material; and a binding fluid comprising a liquid vehicle, metal or metal precursor particles, and latex polymer particles dispersed in the liquid vehicle, wherein the latex polymer particles have an average particle size of from about 10 nm to about 300 nm, and wherein the metal or metal precursor particles comprise metal nanoparticles, metal oxide nanoparticles, metal oxide nanoparticles and a reducing agent, or combinations thereof.

公开(公告)号：US20210362410A1

公开(公告)日：2021-11-25

申请号：US17395002

申请日：2021-08-05

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

Inventor： Stephen G. Rudisill ,  Alexey S. Kabalnov ,  Keshava A. Prasad ,  Sivapackia Ganapathiappan ,  Jake Wright ,  Vladek Kasperchik

IPC: B29C64/188 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/165 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/264 ,  B29C64/112 ,  B29C64/393

Abstract: In a three-dimensional printing method example, a polymeric or polymeric composite build material is applied. A fusing agent is applied on at least a portion of the build material. The fusing agent includes an aqueous or non-aqueous vehicle and an inorganic pigment dispersed in the aqueous or non-aqueous vehicle, wherein the inorganic pigment is selected from the group consisting of lanthanum hexaboride, tungsten bronzes, indium tin oxide, aluminum zinc oxide, ruthenium oxide, silver, gold, platinum, iron pyroxenes, modified iron phosphates (AxFeyPO4), modified copper pyrophosphates (AxCuyP2O7), and combinations thereof. The build material is exposed to electromagnetic radiation, thereby fusing the portion of the build material in contact with the fusing agent to form a layer.

公开(公告)号：US11167478B2

公开(公告)日：2021-11-09

申请号：US16095934

申请日：2016-07-20

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

Inventor： James Elmer Abbott, Jr. ,  Vladek Kasperchik ,  David A. Champion ,  James P. Shields

IPC: B29C64/165 ,  B29C64/40 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: The present disclosure is drawn to material sets, methods and printed articles and container supports. In one example, a material set can include a particulate fusible build material a particulate fusible build material having an average particle size ranging from about 0.01 μm to about 200 μm. The material set can also include a fusing ink including a fusing agent in a first liquid vehicle, wherein the fusing agent fuses the particulate fusible build material when exposed to electromagnetic energy or thermal energy. The material set can also include a binding ink including a binding agent in a second liquid vehicle, wherein the binding agent temporarily binds the particulate fusible build material when exposed to moderate temperatures ranging from ambient to 150° C.

公开(公告)号：US20210292584A1

公开(公告)日：2021-09-23

申请号：US16325454

申请日：2016-10-25

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

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

IPC: C09D11/38 ,  C09D11/322 ,  C09D11/037 ,  C09D11/033

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：US20210283834A1

公开(公告)日：2021-09-16

申请号：US16488715

申请日：2017-11-17

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

Inventor： Andrew Van Brocklin ,  Kevin P. DeKam ,  Vladek Kasperchik ,  Johnathon Holroyd ,  Douglas Pederson ,  Sterling Chaffins

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00

Abstract: In an example of a method for three-dimensional (3D) printing, a polymeric or polymeric composite build material is applied. A dielectric agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The dielectric agent includes a dielectric material having an effective relative permittivity (εr) value ranging from 1.1 to about 10,000. A fusing agent is selectively applied on the at least the portion of the polymeric or polymeric composite build material, and the polymeric or polymeric composite build material is exposed to radiation to fuse the at least the portion of the polymeric or polymeric composite build material to form a region of a layer of a 3D part. The region exhibits a dielectric property, a piezoelectric property, or a combination thereof.