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    • 9. 发明授权
    • Liquid dispenser including passive pre-stressed flexible membrane
    • 液体分配器包括被动预应力柔性膜
    • US08733903B2
    • 2014-05-27
    • US13552752
    • 2012-07-19
    • Zhanjun GaoYonglin Xie
    • Zhanjun GaoYonglin Xie
    • B41J2/05
    • B41J2/14064B41J2002/14177B41J2202/12
    • A liquid dispenser includes first and second liquid chambers. The second liquid chamber is in fluid communication with liquid supply and liquid return channels. A flexible membrane separates and fluidically seals the first and second liquid chambers from each other. The flexible membrane, residing in a first position, includes a residual compressive stress that exceeds an onset buckling stress of the flexible membrane. A heater, associated with the second liquid chamber, is selectively actuated to create a pressure pulse in a liquid that causes the flexible membrane to move from the first position to a second position to eject liquid through a nozzle of the first liquid chamber. In one embodiment, a liquid supply provides liquid that flows continuously from the liquid supply through the liquid supply channel through the second liquid chamber through the liquid return channel and back to the liquid supply during a drop dispensing operation.
    • 液体分配器包括第一和第二液体室。 第二液体室与液体供应和液体返回通道流体连通。 柔性膜将第一和第二液体室彼此分离并流体密封。 位于第一位置的柔性膜包括超过柔性膜的起始屈曲应力的残余压应力。 与第二液体室相关联的加热器被选择性地致动以在液体中产生压力脉冲,其使柔性膜从第一位置移动到第二位置,以将液体喷射通过第一液体室的喷嘴。 在一个实施例中,液体供应提供液体,其在液滴分配操作期间通过液体返回通道从液体供应通过液体供应通道连续流过第二液体室并返回到液体供应。
    • 10. 发明申请
    • LIQUID DISPENSER INCLUDING PASSIVE PRE-STRESSED FLEXIBLE MEMBRANE
    • 液体分配器,包括被动预应力柔性膜
    • US20140022308A1
    • 2014-01-23
    • US13552752
    • 2012-07-19
    • Zhanjun GaoYonglin Xie
    • Zhanjun GaoYonglin Xie
    • B41J2/04
    • B41J2/14064B41J2002/14177B41J2202/12
    • A liquid dispenser includes first and second liquid chambers. The second liquid chamber is in fluid communication with liquid supply and liquid return channels. A flexible membrane separates and fluidically seals the first and second liquid chambers from each other. The flexible membrane, residing in a first position, includes a residual compressive stress that exceeds an onset buckling stress of the flexible membrane. A heater, associated with the second liquid chamber, is selectively actuated to create a pressure pulse in a liquid that causes the flexible membrane to move from the first position to a second position to eject liquid through a nozzle of the first liquid chamber. In one embodiment, a liquid supply provides liquid that flows continuously from the liquid supply through the liquid supply channel through the second liquid chamber through the liquid return channel and back to the liquid supply during a drop dispensing operation.
    • 液体分配器包括第一和第二液体室。 第二液体室与液体供应和液体返回通道流体连通。 柔性膜将第一和第二液体室彼此分离并流体密封。 位于第一位置的柔性膜包括超过柔性膜的起始屈曲应力的残余压应力。 与第二液体室相关联的加热器被选择性地致动以在液体中产生压力脉冲,其使柔性膜从第一位置移动到第二位置,以将液体喷射通过第一液体室的喷嘴。 在一个实施例中,液体供应提供液体,其在液滴分配操作期间通过液体返回通道从液体供应通过液体供应通道连续流过第二液体室并返回到液体供应。