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    • 2. 发明申请
    • METHOD FOR DRIVING INK-JET HEAD
    • 用于驱动喷嘴头的方法
    • WO01032428A1
    • 2001-05-10
    • PCT/JP2000/000198
    • 2000-01-18
    • B41J2/045B41J2/14B41J2/055
    • B41J2/04516B41J2/04581B41J2/04588B41J2/14274
    • A method for driving an ink-jet head for ejecting an ink droplet at high speed with no satellite droplet. To drive an ink-jet head for ejecting an ink droplet, the driving voltage is lowered from the value of the initial state, and then sharply raised to change the meniscus to a convex state. Immediately after a main droplet is formed, the driving is stopped. Thereafter from this state, the driving voltage is lowered to move back the meniscus and thereby to prevent the ejection of a satellite droplet. Then the driving voltage is raised to return the meniscus to the initial state.
    • 一种用于驱动喷墨头的方法,用于在没有卫星液滴的情况下高速喷射墨滴。 为了驱动用于喷射墨滴的喷墨头,驱动电压从初始状态的值降低,然后急剧上升以将弯液面改变为凸状。 在主液滴形成之后立即停止驾驶。 此后,从该状态,驱动电压降低以向后移动弯月面,从而防止卫星液滴的喷射。 然后升高驱动电压使半月板恢复到初始状态。
    • 3. 发明申请
    • METHOD OF DRIVING INK JET TYPE RECORDING HEAD
    • 驱动喷嘴型记录头的方法
    • WO1997037852A1
    • 1997-10-16
    • PCT/JP1997001238
    • 1997-04-10
    • SEIKO EPSON CORPORATIONKITAHARA, TsuyoshiTANAKA, Ryoichi
    • SEIKO EPSON CORPORATION
    • B41J02/045
    • B41J2/04516B41J2/04581B41J2/04588
    • An ink jet type recording head including nozzle openings, a pressure generating chamber communicating with a common ink chamber via ink supply ports and having a Helmholtz resonant frequency having a period Tc, and a piezoelectric vibrator for expanding and contracting the pressure generating chamber can be driven at a high drive frequency by a method, which comprises a first step of expanding the pressure generating chamber, a second step of maintaining the expanded state, and a third step of contracting the pressure generating chamber placed in the expanded state to discharge ink droplets from the nozzle openings, and in which the duration of the second step is made at most half the period Tc of the Helmholtz resonant frequency to make oscillation of meniscus as small as possible to thereby prevent satellite due to reveral rising of meniscus and generation of ink mist and to shorten a dampening time of meniscus corresponding to the oscillation reduction.
    • 一种喷墨式记录头,包括喷嘴开口,通过供墨口与公共墨室连通并具有亥姆霍兹共振频率具有周期Tc的压力发生室和用于膨胀和收缩压力发生室的压电振动器可被驱动 通过一种方法在高驱动频率下,其包括使压力发生室膨胀的第一步骤,保持膨胀状态的第二步骤,以及将处于膨胀状态的压力发生室收缩的第三步骤,以将墨滴从 喷嘴开口,并且其中第二步骤的持续时间被制成亥姆霍兹共振频率的周期Tc的至多一半,以使得弯月面的振荡尽可能小,从而防止由于弯液面的再次升高引起的卫星和墨雾的产生 并缩短对应于振荡降低的弯液面的衰减时间。
    • 9. 发明申请
    • METHOD AND APPARATUS TO PROVIDE VARIABLE DROP SIZE EJECTION WITH LOW TAIL MASS DROPS
    • 提供具有低尾巴质量流量的可变尺寸喷射的方法和装置
    • WO2009143448A1
    • 2009-11-26
    • PCT/US2009/045017
    • 2009-05-22
    • FUJIFILM DIMATIX, INC.HASENBEIN, Robert
    • HASENBEIN, Robert
    • B41J2/07B41J29/393B41J2/01B41J2/015
    • B41J2/04596B41J2/04516B41J2/04581B41J2/04588B41J2/04595
    • Described herein is a method and apparatus for driving a drop ejection device to produce variable sized drops with multi-pulse waveforms. In one embodiment, a method for driving a drop ejection device having an actuator includes applying a multi-pulse waveform having at least one drive pulse and at least one break off pulse to the actuator. The method further includes building a drop of a fluid with the at least one drive pulse. The method further includes accelerating the break off of the drop with the at least one break off pulse. The method further includes causing the drop ejection device to eject the drop of a fluid in response to the pulses of the multi-pulse waveform. The break off pulse causes the break off of the drop formed by the at least one drive pulse in order to reduce the tail mass of the drop.
    • 这里描述了用于驱动液滴喷射装置以产生具有多脉冲波形的可变大小的液滴的方法和装置。 在一个实施例中,用于驱动具有致动器的液滴喷射装置的方法包括向致动器施加具有至少一个驱动脉冲和至少一个断开脉冲的多脉冲波形。 该方法还包括用至少一个驱动脉冲构建一滴流体。 该方法还包括用至少一个断开脉冲来加速液滴的断裂。 该方法还包括使滴液喷射装置响应多脉冲波形的脉冲喷射流体液滴。 断开脉冲导致由至少一个驱动脉冲形成的液滴的中断,以便减小液滴的尾部质量。