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公开(公告)号：US09381738B2
公开(公告)日：2016-07-05
申请号：US14139554
申请日：2013-12-23
Applicant: SEIKO EPSON CORPORATION
Inventor： Noritaka Ide , Kunio Tabata , Atsushi Oshima , Shinichi Miyazaki , Hiroyuki Aizawa , Seiichi Taniguchi
CPC classification number: B41J2/04501 , B41J2/04508 , B41J2/04541 , B41J2/04581 , B41J2/04593 , B41J2/04596 , B41J2/07 , H01L41/042 , H03F3/2175
Abstract: A liquid jet apparatus according to the present invention includes 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, with a pair of switching elements push-pull coupled with each other, 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 based on data of the drive waveform signal.
Abstract translation: 根据本发明的液体喷射装置包括适于产生驱动波形信号的驱动波形发生器，适于对驱动波形信号执行脉冲调制的调制器，适于对已调制信号进行功率放大的数字功率放大器， 脉冲调制由调制器执行，一对开关元件彼此相互推挽，一个适合于平滑由数字功率放大器的功率放大而获得的放大数字信号的低通滤波器，以及调制周期 修改电路，其适于基于所述驱动波形信号的数据修改所述调制器的脉冲调制的调制周期。
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公开(公告)号：US08657399B2
公开(公告)日：2014-02-25
申请号：US13743169
申请日：2013-01-16
Applicant: Seiko Epson Corporation
Inventor： Noritaka Ide , Kunio Tabata , Atsushi Oshima , Shinichi Miyazaki , Hiroyuki Aizawa , Seiichi Taniguchi
CPC classification number: B41J2/04501 , B41J2/04508 , B41J2/04541 , B41J2/04581 , B41J2/04593 , B41J2/04596 , B41J2/07 , H01L41/042 , H03F3/2175
Abstract: A liquid jet apparatus according to the present invention includes 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, with a pair of switching elements push-pull coupled with each other, 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 based on data of the drive waveform signal.
Abstract translation: 根据本发明的液体喷射装置包括适于产生驱动波形信号的驱动波形发生器，适于对驱动波形信号执行脉冲调制的调制器，适于对已调制信号进行功率放大的数字功率放大器， 脉冲调制由调制器执行，一对开关元件彼此相互推挽，一个适合于平滑由数字功率放大器的功率放大而获得的放大数字信号的低通滤波器，以及调制周期 修改电路，其适于基于所述驱动波形信号的数据修改所述调制器的脉冲调制的调制周期。
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