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    Fluid sets for inkjet imaging
    123.
    发明授权
    Fluid sets for inkjet imaging 有权

    公开(公告)号：US10464341B2

    公开(公告)日：2019-11-05

    申请号：US15545057

    申请日：2015-04-27

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

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

    IPC: B41J2/21 ,  B41M5/00 ,  C09D11/10 ,  C09D11/322 ,  C09D11/54

    Abstract: The present disclosure is drawn to a fluid set for inkjet imaging which includes a white inkjet ink and a fixer fluid. The white ink can include 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, and from 0.1 wt % to 4 wt % of anionic oxide particulates having an average particulate size from 1 nm to 100 nm. The white ink can also include 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 fixer fluid can include an aqueous fixer vehicle and from 0.1 wt % to 25 wt % cationic polymer.

    Three-dimensional (3D) printing
    124.
    发明授权
    Three-dimensional (3D) printing 有权

    公开(公告)号：US10434709B2

    公开(公告)日：2019-10-08

    申请号：US15547007

    申请日：2015-04-27

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

    Inventor： Alexey S. Kabalnov ,  Jacob Tyler Wright ,  Vladek Kasperchik

    IPC: B29C64/165 ,  B29C64/112 ,  B29C64/291 ,  B33Y10/00 ,  B33Y30/00 ,  B41M3/00 ,  B41M5/00 ,  B29K77/00 ,  B33Y70/00

    Abstract: In a 3D printing method example, color is added to a part. A build material is applied, and is pre-heated to a temperature ranging from about 50 C to about 400 C. A black ink, including an infrared absorbing colorant, is selectively applied on at least a portion of the build material. A white ink, including a white colorant that is opaque in visible wavelengths and is transparent to infrared wavelengths, is selectively applied on the black ink. A colored ink, including a colorant having a color other than black or white, is selectively applied on the white ink. The build material and the applied inks are then exposed to infrared radiation. The black ink at least partially fuses the portion of the build material in contact therewith. At least some of the white colorant and the colorant are embedded in the at least partially fused portion at a surface thereof.

    Non-Newtonian inkjet inks
    125.
    发明授权
    Non-Newtonian inkjet inks 有权

    公开(公告)号：US10400122B2

    公开(公告)日：2019-09-03

    申请号：US15119087

    申请日：2014-03-06

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

    Inventor： Raymond Adamic ,  Vladek Kasperchik

    IPC: C09D11/38 ,  B41J2/01 ,  B41M5/00 ,  C09D11/322 ,  C09D11/36

    Abstract: The present disclosure provides non-Newtonian inkjet inks and related methods. In one example, a non-Newtonian inkjet ink include a dispersion of metal oxide particles in an amount ranging from 0.1% to 10% by weight based on the total weight of the non-Newtonian inkjet ink; a salt in an amount of 0.05% to 10% by weight based on the total weight of the non-Newtonian inkjet ink; and an organic solvent. Additionally, the metal oxide form a structured network in a presence of the salt and the inkjet ink have a dynamic viscosity ranging from 25 cps to 10,000 cps at shear rate of 5 s−1 and a dynamic viscosity ranging from 1 cps to 50 cps at a shear rate of 10,000 s−1.

    Fluid sets for inkjet imaging
    127.
    发明授权
    Fluid sets for inkjet imaging 有权

    公开(公告)号：US10273374B2

    公开(公告)日：2019-04-30

    申请号：US15544600

    申请日：2015-04-27

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

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

    IPC: C09D11/322 ,  C09D11/54 ,  B41M5/00 ,  B41J2/21 ,  C09D11/40 ,  C09D11/106 ,  B41J11/00 ,  B41M5/50 ,  B41M7/00

    Abstract: The present disclosure is drawn to fluid sets for inkjet imaging and can comprise a white ink and a fixer fluid. The white ink can include an aqueous ink vehicle, from 5 wt % to 50 wt % of a white metal oxide pigment, and from 0.02 wt % to 2 wt % of an anionic low molecular weight polymer. The white metal oxide pigment can have an average particulate size from 100 nm to 2,000 nm, and can be dispersed by 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 anionic low molecular weight polymer can have a weight average molecular weight of 3,000 Mw to 50,000 Mw and an acid number higher than 100 mg KOH/g based on dry polymer weight. The fixer fluid can include an aqueous fixer vehicle and from 0.1 wt % to 25 wt % cationic polymer.

    THREE-DIMENSIONAL PRINTING
    128.
    发明申请
    THREE-DIMENSIONAL PRINTING 审中-公开

    公开(公告)号：US20190111479A1

    公开(公告)日：2019-04-18

    申请号：US16125062

    申请日：2018-09-07

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

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

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

    Abstract: Described herein are compositions, kits, 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.

    MATERIAL SETS
    129.
    发明申请
    MATERIAL SETS 审中-公开

    公开(公告)号：US20190054691A1

    公开(公告)日：2019-02-21

    申请号：US16169443

    申请日：2018-10-24

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

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

    IPC: B29C64/165 ,  B22F1/00 ,  B29C64/40

    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 having an average particle size ranging from about 0.01 μm to about 200 μm, wherein the particulate fusible build material is a polymer powder, a metal composite powder, or a combination thereof. A fusing ink includes 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. A binding ink includes a binding agent in a second liquid vehicle, wherein the binding agent temporarily binds the fusible build material when exposed to moderate temperatures ranging from ambient to 150° C.

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