Patent ID: 9381738
Filing Date: 2016-07-05
CPC Classification: B41J,H01L,H03F

Claim Text:
1. A liquid jet apparatus comprising: a drive waveform generator adapted to generate a drive waveform signal; a modulator adapted to execute pulse modulation on the drive waveform signal; a digital power amplifier adapted to power-amplify the modulated signal, on which the pulse modulation is executed by the modulator; a low pass filter adapted to smooth the amplified digital signal obtained by the power-amplification of the digital power amplifier; and a modulation period modification circuit adapted to modify a modulation period of the pulse modulation of the modulator, wherein the modulation period modification circuit configured to modify a carrier frequency of a PWM modulated signal of the modulator in accordance with a gradient of a potential of the drive waveform signal.