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    • 81. 发明授权
    • Drive method for an electrostatic ink jet head for eliminating residual
charge in the diaphragm
    • 用于消除隔膜中残留电荷的静电喷墨头的驱动方法
    • US5818473A
    • 1998-10-06
    • US749874
    • 1996-11-14
    • Masahiro FujiiHiroyuki IshikawaShigeo NojimaHiroyuki MaruyamaAtsushi Yamaji
    • Masahiro FujiiHiroyuki IshikawaShigeo NojimaHiroyuki MaruyamaAtsushi Yamaji
    • B41J2/045B41J2/14B41J2/04B41J2/095
    • B41J2/04541B41J2/04551B41J2/04578B41J2/04588B41J2/14314
    • A drive method of an ink-jet head is provided in which a diaphragm is deformed by means of electrostatic force to eject an ink droplet from a nozzle so as to prevent a residual charge from being created between a diaphragm and an individual electrode. The method has first and second drive modes. In a first drive mode a voltage of a first polarity is applied between a diaphragm of the inkjet head (common electrode) and an individual electrode to cause the diaphragm to be deformed and an ink droplet to be ejected from a nozzle. In the second drive mode a voltage of a second polarity opposite to the first polarity is applied between the diaphragm and the individual electrode to cause the diaphragm to be deformed and an ink droplet to be ejected from the nozzle at least once for each operation of ink droplet ejection performed in the first drive mode. According to this method, a residual charge created between the diaphragm and the electrode can be removed concurrently with performing the operation of ink droplet ejection by applying positive and negative drive voltage pulses.
    • 提供了一种喷墨头的驱动方法,其中隔膜通过静电力而变形以从喷嘴喷射墨滴,从而防止在隔膜和单独电极之间产生残余电荷。 该方法具有第一和第二驱动模式。 在第一驱动模式中,在喷墨头(公共电极)的隔膜和单独电极之间施加第一极性的电压,以使隔膜变形并从喷嘴喷出墨滴。 在第二驱动模式中,在隔膜和单独电极之间施加与第一极性相反的第二极性的电压,以使得隔膜变形,并且对于每个墨的操作,墨滴从喷嘴喷射至少一次 在第一驱动模式中执行液滴喷射。 根据该方法,通过施加正驱动电压脉冲和负驱动电压脉冲来执行墨滴喷射的操作,可以同时去除在膜片和电极之间产生的残留电荷。