| 摘要 |
PROBLEM TO BE SOLVED: To make it easy to integrate a current amplification part for forming a drive signal for ejecting liquid droplets. SOLUTION: The liquid ejector includes a reference waveform voltage generation part, a first voltage generation part, a second voltage generation part, and an element. The reference waveform voltage generation part generates a reference waveform. The first voltage generation part generates a first voltage higher than the voltage of the reference waveform while varying depending on the reference waveform. The second voltage generation part generates a second voltage lower than the voltage of the reference waveform while varying depending on the reference waveform. The element has a first current amplification part using the first voltage and a second current amplification part using the second voltage, and generates a drive signal for ejecting a liquid droplet from a nozzle while current-amplifying the reference waveform. COPYRIGHT: (C)2009,JPO&INPIT
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