PRINTHEAD CAPPER
    3.
    发明申请
    PRINTHEAD CAPPER 审中-公开

    公开(公告)号:US20190061352A1

    公开(公告)日:2019-02-28

    申请号:US16110583

    申请日:2018-08-23

    IPC分类号: B41J2/165 B41J2/175

    摘要: A capper for an inkjet printhead has a perimeter seal for sealing engagement with a capping surface of the printhead. The perimeter seal is formed from an auxetic material having a negative Poisson's ratio. The capper is suitable for capping printheads having capping surfaces containing non-unformities. The capper is especially suitable for capping pagewide inkjet printheads.

    METHOD OF PRINTING ONTO CYLINDRICAL SURFACE
    8.
    发明申请

    公开(公告)号:US20190092008A1

    公开(公告)日:2019-03-28

    申请号:US16141864

    申请日:2018-09-25

    IPC分类号: B41J2/145

    摘要: A method of printing onto a surface of a cylinder having radius Rc using a stationary inkjet printhead. The method includes the steps of: rotating the cylinder at an angular velocity ωc of at least π radians per second; and ejecting ink droplets from the printhead at an ejection velocity in the range of 6 to 20 meters per second. The printhead has a print zone with a width Wp and first and second nozzle rows positioned distances d1 and d2 relative to a centerline of the print zone. The print zone and cylinder fulfil the relationship Wp/Rc≤0.2, and the first and second nozzle row ejects ink droplets at times T1 and T2, whereby T1=d1/Rcω; and T2=d2/Rcωc.