| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jetting apparatus capable of automatically suppressing the deterioration of printing quality caused by the fluctuation of a liquid droplet ejecting weight owing to the secular deterioration of a piezoelectric element. SOLUTION: The liquid jetting apparatus comprises a liquid jetting apparatus body, a liquid jetting head II having the piezoelectric element 300 which induces pressure variation in a liquid flow path communicating with a nozzle opening 21 based on a driving signal to eject liquid droplets, and a control means 500 feeding the driving signal which drives the piezoelectric element 300, the control means 500 comprising an ejecting number of times counting means 510 for counting an ejecting number of times of the droplets, voltage correcting information 521 for correcting a voltage of the driving signal in accordance with the ejecting number of times, and a voltage correcting means 520 for correcting the voltage of the driving signal based on the ejecting number of times counted by the ejecting number of times counting means 510 and the voltage correcting information 521 to correct the liquid droplet weight. COPYRIGHT: (C)2009,JPO&INPIT
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