| 摘要 |
The pressure generating actuator(PGA, 33) of the dual liquid crystal jetting system is provided to the jet ink by the pressure applied to the ink chamber(32). The valve(36) regulates the quantity of the ink jetted by switching it up and down. When the valve(36) is opened to regulate the quantity of ink jetted, the pressure generated by the PGA(33) by-passes through the valve(36) to return to the ink chamber(32). The pressure at the nozzle(35) drops lower than the minimum level required for the jetting ink. When the valve(36) is closed, the PGA(33) sucks in the ink from the ink chamber and ejects it through the nozzle.
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