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    COATED PRINT MEDIUM
    3.
    发明申请
    COATED PRINT MEDIUM 有权

    公开(公告)号：US20180229529A1

    公开(公告)日：2018-08-16

    申请号：US15951533

    申请日：2018-04-12

    申请人： Hewlett-Packard Development Company, L.P.

    发明人： Bor-Jiunn Niu ,  Silke Courtenay ,  John Gardner

    IPC分类号： B41M5/52

    摘要： The present disclosure is drawn to a coated print medium, a method of preparing a print medium, and a printing system. The coated print medium can comprise a substrate and a coating applied to the substrate. The coating can comprise, by dry weight percent, 5 wt % to 30 wt % of a polymeric binder, 20 wt % to 50 wt % of a cationic latex, 5 wt % to 15 wt % of a multivalent cationic salt, and 1 wt % to 20 wt % of an optical brightener; and 5 wt % to 20 wt % of a cationic polyamine.

    Pre-treatment coating compositions
    7.
    发明授权
    Pre-treatment coating compositions 有权

    公开(公告)号：US10759963B2

    公开(公告)日：2020-09-01

    申请号：US16073389

    申请日：2016-06-16

    申请人： Hewlett-Packard Development Company, L.P.

    发明人： Bor-Jiunn Niu ,  Jason Swei

    IPC分类号： C09D175/04 ,  C09D7/40 ,  C09D7/65 ,  C09D7/63 ,  B41M5/00 ,  C08L91/06 ,  C09D7/61 ,  C08K3/16

    摘要： The present disclosure provides pre-treatment compositions and related methods. As such, a pre-treatment coating composition can include an evaporable liquid vehicle and a pre-treatment coating matrix. The pre-treatment coating matrix can include from 5 wt % to 40 wt % multivalent metal salt, and from 5 wt % to 20 wt % polyurethane. The composition can further include from 10 wt % to 50 wt % high Tg latex having a Tg greater than 80° C., from 0.5 wt % to 20 wt % water soluble binder, and from 3 wt % to 20 wt % wax having a melting point greater than 120° C. The weight percentages of the pre-treatment coating matrix exclude the evaporable liquid vehicle content, and the weight ratio of the high Tg latex to polyurethane is from 1:1 to 5:1.