| 摘要 |
PROBLEM TO BE SOLVED: To provide an inkjet printer capable of decreasing consumption of electric power. SOLUTION: A charge origin electric potential preliminary adjustment waveform signal WCCOM for preliminarily adjusting an electric potential of a charge origin to a driving signal generating circuit 72 is formed, and a modulation signal CPWM for a charge origin electric potential pulse-modulated, is amplified in electric power by a pair of transistors 32 for a charge origin electric potential push-pull connected of a digital electric power amplifier 28 for the charge origin electric potential, and it is smoothed to output it to a collector of a transistor Tr1 for charging of the driving signal generating circuit 72. At the same time, a discharge origin electric potential preliminary adjustment waveform signal WDCOM for preliminarily adjusting an electric potential of a discharge origin from the driving signal generating circuit 72 is formed, and a modulation signal DPWM for a discharge origin electric potential pulse-modulated, is amplified in electric power by a pair of transistors 33 for discharge origin electric potential push-pull connected of a digital electric power amplifier 29 for the discharge origin electric potential, and it is smoothed to output it to a collector of a transistor Tr2 for discharging of the driving signal generating circuit 72. COPYRIGHT: (C)2011,JPO&INPIT
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