RECIRCULATION OF INK
    8.
    发明专利

    公开(公告)号:HK1205485A1

    公开(公告)日:2015-12-18

    申请号:HK15106006

    申请日:2015-06-24

    Abstract: An apparatus includes an inkjet assembly having inkjet nozzles through each of which ink flows at a nominal flow rate as it is ejected from the nozzle onto a substrate. Ink is held under a nominal negative pressure associated with a characteristic of a meniscus of the ink in the nozzle when ejection of ink from the nozzle is not occurring. The apparatus includes recirculation flow paths, each flow path having a nozzle end at which it opens into one of the nozzles and another location spaced from the nozzle end that is to be subjected to a recirculation pressure lower than the nominal negative pressure so that ink is recirculated from the nozzle through the flow path at a recirculation flow rate. Each recirculation flow path has a fluidic resistance between the nozzle end and the other location such that a recirculation pressure at the nozzle end of the flow path that results from the recirculation pressure applied at the other location of the flow path is small enough so that any reduction in flow rate below the nominal flow rate when ink is being ejected is less than a threshold, or a change in the nominal negative pressure when ink is not being ejected is less than a threshold, or both.

    FLUID DROPLET EJECTION DEVICES AND METHODS
    10.
    发明申请
    FLUID DROPLET EJECTION DEVICES AND METHODS 审中-公开
    流体滴管喷射装置和方法

    公开(公告)号:WO2007121120B1

    公开(公告)日:2008-10-30

    申请号:PCT/US2007066159

    申请日:2007-04-06

    Abstract: A method for driving a droplet ejection device (10) having an actuator (38), including applying a primary drive pulse (1701) to the actuator to case the droplet ejection device to eject a droplet of fluid in a jetting direction, and applying one or more secondary drive pulses (1702-1705) to the actuator which reduce a length of the droplet in the jetting direction without substantially changing a volume of the droplet.

    Abstract translation: 一种用于驱动具有致动器(38)的液滴喷射装置(10)的方法,包括向所述致动器施加主驱动脉冲(1701)以使所述液滴喷射装置在喷射方向上喷射流体液滴,并施加一个 或更多的辅助驱动脉冲(1702-1705),其减小了喷射方向上的液滴的长度,而基本上不改变液滴的体积。

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