| 主权项 |
1. A piezoelectric printing apparatus, comprising:
a plurality of independently-controllable liquid ejection elements; and a corresponding plurality of Class-G voltage amplifiers, each amplifier adapted to receive an input waveform for a particular one of the liquid ejection elements and provide to the particular ejection element in response an amplified waveform drive signal that causes the particular ejection element to eject an intended quantity of liquid. |
