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    Applying electric fields to erase regions of a print medium
    22.
    发明授权
    Applying electric fields to erase regions of a print medium 有权
    施加电场以擦除打印介质的区域

    公开(公告)号：US09365051B2

    公开(公告)日：2016-06-14

    申请号：US14648088

    申请日：2012-11-30

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

    Inventor： Thomas A. Saksa ,  Raymond Adamic

    IPC: B41J2/015 ,  B41J11/00 ,  B41J29/26

    CPC classification number: B41J11/0015 ,  B41J29/26

    Abstract: In an embodiment, an ink erasing system includes an erase fluid dispenser to apply erase fluid to a surface of a print medium. The system includes a plurality of nonadjacent pairs of electrodes positioned across a width of the print medium. The system also includes a controller to direct the erase fluid dispenser to apply the erase fluid in an erase region on the print medium, and to alternately electrify the nonadjacent pairs of electrodes to generate a moving electric field through the erase region.

    Abstract translation: 在一个实施例中，墨擦除系统包括擦除流体分配器以将擦除流体施加到打印介质的表面。 该系统包括跨越打印介质的宽度定位的多个不相邻的电极对。 该系统还包括控制器，用于引导擦除流体分配器将擦除流体施加到打印介质上的擦除区域中，并交替地使不相邻的电极对通电，以通过擦除区域产生移动的电场。

    INKJET INK COMPOSITION
    23.
    发明申请
    INKJET INK COMPOSITION 有权

    公开(公告)号：US20210163769A1

    公开(公告)日：2021-06-03

    申请号：US16770714

    申请日：2018-04-12

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

    Inventor： Raymond Adamic ,  Goeun Sim

    IPC: C09D11/38 ,  C09D11/322 ,  C09D11/328 ,  C09D11/14 ,  C09D11/037 ,  C09D11/033 ,  B41M5/00

    Abstract: An inkjet ink composition includes cellulose nanocrystals and a metal oxide. The cellulose nanocrystals are present in the inkjet ink composition in an amount ranging from 0.5 wt % up to 2 wt %, based on a total weight of the inkjet ink composition, and the metal oxide is present in the inkjet ink composition in an amount ranging from 0.5 wt % up to 7 wt %, based on the total weight of the inkjet ink composition. The inkjet ink composition further includes a pigment, a polar solvent and a balance of water.

    Three-dimensional (3D) printing
    25.
    发明授权
    Three-dimensional (3D) printing 有权

    公开(公告)号：US11007710B2

    公开(公告)日：2021-05-18

    申请号：US15568969

    申请日：2015-07-24

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

    Inventor： James Elmer Abbott, Jr. ,  Raymond Adamic ,  David A. Champion

    IPC: B29C64/135 ,  B33Y70/00 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/165 ,  C09D11/322 ,  G03G15/22 ,  B22F10/10 ,  B29C64/112

    Abstract: In a 3D printing method, a first layer of a build material is applied. A part layer is patterned by selectively applying a penetrating liquid functional material (PLFM) on at least a portion of the first layer. The PLFM includes (in amounts by weight based on total wt % of the PLFM): from about 5%-15% of a first metal oxide nanoparticle having a particle size ranging from about 0.5 nm up to 10 nm, from about 0.25%-10% of a second metal oxide nanoparticle having at least one dimension greater than 10 nm, from about 1%-10% of an electromagnetic radiation absorber, from about 5%-50% of an organic solvent, a surfactant, and a balance of water. The first layer having the PLFM applied thereon is exposed to electromagnetic radiation, whereby the portion of the first layer at least partially fuses to form the part layer.

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