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    UV-curable inkjet inks
    51.
    发明授权
    UV-curable inkjet inks 有权

    公开(公告)号：US11001073B2

    公开(公告)日：2021-05-11

    申请号：US16617325

    申请日：2017-10-17

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

    Inventor： George Sarkisian ,  Zhang-Lin Zhou ,  Rodney David Stramel

    IPC: C09D11/101 ,  B41M5/00 ,  C09D11/102 ,  C09D11/322 ,  C09D11/54 ,  B41J2/21 ,  C08G18/08 ,  C08G18/24 ,  C08G18/28 ,  C08G18/67 ,  C08G18/72 ,  C08G18/73 ,  C08G18/75 ,  C08G18/76 ,  C08G18/81

    Abstract: The present disclosure is drawn to UV-curable inkjet inks, fluid sets, and printing systems. An example UV-curable inkjet ink can include water, a photo-initiator, from 8 wt % to 25 wt % organic co-solvent, and from 2 wt % to 20 wt % of a polyurethane. The polyurethane can include a polymer strand including a polymer backbone having two ends terminating at first and second capping units. The polymer backbone can be formed of polymerized monomers including a diisocyanate and a reactive diol selected from an acrylate-containing diol or a methacrylate-containing diol. The first capping unit can include an acrylate-containing monoalcohol, a methacrylate-containing monoalcohol, an allyl-containing monoalcohol, an allyl-containing monoamine, a styrene-containing monoalcohol, an acrylamide-containing monoalcohol, or a methacrylamide-containing monoalcohol reacted with an isocyanate group of the diisocyanate. The second capping unit can include 3-(cyclohexylamino)-1-propanesulfonic acid or 2-(cyclohexylamino)ethanesulfonic acid reacted with an isocyanate group of the diisocyanate.

    Inkjet printing
    54.
    发明授权
    Inkjet printing 有权

    公开(公告)号：US10723896B2

    公开(公告)日：2020-07-28

    申请号：US16331189

    申请日：2017-01-31

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

    Inventor： Zhang-Lin Zhou ,  Rodney David Stramel ,  Tao Chen ,  Bor-Jiunn Niu ,  Gregg A. Lane

    IPC: B41J11/02 ,  C09D11/101 ,  B41M5/00 ,  C09D11/38 ,  C09D11/54 ,  D06P5/30

    Abstract: The present disclosure relates to an inkjet printing process that comprises applying a radiation-curable primer composition onto a substrate to form a primer layer. The primer composition comprises a curable polyurethane dispersion, a photoinitiator and water. An inkjet ink composition is inkjet printed onto the primer layer as a printed inkjet ink layer. The inkjet ink composition comprises a colorant, a curable polyurethane dispersion, a photoinitiator and water. The curable polyurethane is dispersed in the inkjet ink composition in an amount of composition is 0.1 to 30 weight % of the inkjet ink composition. The printed inkjet ink layer is cured on the substrate by exposing both the primer layer and printed inkjet ink layer on the substrate to radiation.

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