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    THREE-DIMENSIONAL (3D) PRINTING
    1.
    发明申请
    THREE-DIMENSIONAL (3D) PRINTING 有权

    公开(公告)号：US20210197269A1

    公开(公告)日：2021-07-01

    申请号：US16077770

    申请日：2017-02-24

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

    Inventor： Vladek KASPERCHIK ,  Mohammed S. SHAARAWI ,  Michael G. MONROE ,  David Michael INGLE

    IPC: B22F10/14 ,  B33Y70/10 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/165 ,  B29C64/209 ,  B29C64/295 ,  B22F3/10

    Abstract: In a three-dimensional (3D) printing method example, a metallic build material is applied. A binder fluid is selectively applied on at least a portion of the metallic build material. The binder fluid includes a liquid vehicle and polymer particles dispersed in the liquid vehicle. The application of the metallic build material and the selective application of the binder fluid are repeated to create a patterned green part. The patterned green part is heated to at about a melting point of the polymer particles to activate the binder fluid and create a cured green part. The cured green part is heated to a thermal decomposition temperature of the polymer particles to create an at least substantially polymer-free gray part. The at least substantially polymer-free gray part is heated to a sintering temperature to form a metallic part.

    INKJET PRIMER FLUID
    2.
    发明申请
    INKJET PRIMER FLUID 有权

    公开(公告)号：US20210198511A1

    公开(公告)日：2021-07-01

    申请号：US16080252

    申请日：2017-02-24

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

    Inventor： Stephen G. RUDISILL ,  Alexey S. KABALNOV ,  Vladek KASPERCHIK

    IPC: C09D11/40 ,  C09D11/38 ,  B29C64/112 ,  B41M5/00

    Abstract: An example inkjet primer fluid includes an alkoxysilane, a surfactant, a co-solvent, and a balance of water; and is at least substantially colorless. In an example method, a primer fluid, including an alkoxysilane, a surfactant, a co-solvent, and a balance of water, is thermal inkjet printed from a thermal inkjet printhead to form a silicon dioxide film on a resistor. Then, a jettable composition, including suspended nanoparticles, is thermal inkjet printed from the thermal inkjet printhead. In another example method, suspended nanoparticles, an alkoxysilane, and a growth mediator are combined to form a mixture. The mixture is heated to a temperature ranging from about 60° C. to about 80° C. and stirred for about 12 hours to about 36 hours to form silicon dioxide coated, suspended nanoparticles. Then, a surfactant, a zwitterionic stabilizer, a co-solvent, and a balance of water are added to the mixture to form a stabilized, jettable composition.

    THREE-DIMENSIONAL PRINTING
    3.
    发明申请
    THREE-DIMENSIONAL PRINTING 有权

    公开(公告)号：US20210197280A1

    公开(公告)日：2021-07-01

    申请号：US16077772

    申请日：2017-10-12

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

    Inventor： Vladek KASPERCHIK ,  Mohammed S. SHAARAWI ,  James MCKINNELL

    IPC: B22F10/50 ,  B33Y70/10 ,  B29C64/165 ,  B33Y10/00 ,  B22F10/14 ,  B22F3/10

    Abstract: An example of a method, for three-dimensional (3D) printing, includes applying a build material and patterning at least a portion of the build material. The patterning includes selectively applying a wetting amount of a binder fluid on the at least the portion of the build material and subsequently selectively applying a remaining amount of the binder fluid on the at least the portion of the build material. An area density in grams per meter square meter (gsm) of the wetting amount ranges from about 2 times less to about 30 times less than area density in gsm of the remaining amount.

    THREE-DIMENSIONAL PRINTING
    4.
    发明申请
    THREE-DIMENSIONAL PRINTING 有权

    公开(公告)号：US20210205880A1

    公开(公告)日：2021-07-08

    申请号：US16081499

    申请日：2018-02-23

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

    Inventor： Vladek KASPERCHIK ,  David Michael INGLE ,  Cory J RUUD

    IPC: B22F1/00 ,  B33Y70/10 ,  C08L13/02 ,  C08K5/3415

    Abstract: Described herein are compositions, methods, and systems for printing metal three-dimensional objects. In an example, described is a composition for three-dimensional printing comprising: 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; and a binder fluid comprising: an aqueous liquid vehicle, and latex polymer particles dispersed in the aqueous liquid vehicle, wherein the latex polymer particles have an average particle size of from about 10 nm to about 300 nm.

    THREE-DIMENSIONAL (3D) PRINTING
    6.
    发明申请
    THREE-DIMENSIONAL (3D) PRINTING 有权

    公开(公告)号：US20210187612A1

    公开(公告)日：2021-06-24

    申请号：US16079359

    申请日：2017-07-06

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

    Inventor： Vladek KASPERCHIK ,  Krzysztof NAUKA ,  David Michael INGLE

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

    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

    THREE-DIMENSIONAL PRINTING
    10.
    发明申请
    THREE-DIMENSIONAL PRINTING 审中-公开

    公开(公告)号：US20190091766A1

    公开(公告)日：2019-03-28

    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: B22F3/00 ,  B22F3/10 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

    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.

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