发明名称 |
DRIVING METHOD FOR DROPLET SPRAYING DEVICE |
摘要 |
A droplet spraying device capable of increasing a liquid supply amount per unit time and ejecting liquid constantly without producing bubbles in the liquid in a pressurizing room. As shown by an elapsed time of voltage signals applied to a piezoelectric/electrostriction elements in a drive circuit, within fall times T3, T4 during which discharges with different discharge time constants are conducted sequentially, a first discharge time is set to be larger than a second discharge time and the liquid is sucked at a slow feed speed through introduction holes after ejection to thereby allow the liquid to uniformly flow in through a plurality of introduction holes without carrying bubbles into a liquid pressurizing room from a nozzle side. On the other hand, since a liquid started to move can be quickly sucked with a smaller second discharge time constant, the liquid can be supplied smoothly and a drive frequency time T5 can be shortened compared with a case where the liquid is sucked with the first time constant to the last, whereby a large amount of liquid per unit time can be ejected constantly. |
申请公布号 |
WO0058626(A1) |
申请公布日期 |
2000.10.05 |
申请号 |
WO2000JP02018 |
申请日期 |
2000.03.30 |
申请人 |
NGK INSULATORS, LTD.;OHNISHI, TAKAO;OHWADA, IWAO;HIROTA, TOSHIKAZU |
发明人 |
OHNISHI, TAKAO;OHWADA, IWAO;HIROTA, TOSHIKAZU |
分类号 |
B41J2/045;B41J2/14;F04B43/00;F04B43/04 |
主分类号 |
B41J2/045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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