发明授权
US09475283B2 Liquid discharging apparatus, head unit, capacitive load driving circuit, and control method of capacitive load driving circuit
有权
液体排放装置，头单元，容性负载驱动电路以及电容性负载驱动电路的控制方法
- 专利标题： Liquid discharging apparatus, head unit, capacitive load driving circuit, and control method of capacitive load driving circuit
- 专利标题（中）： 液体排放装置，头单元，容性负载驱动电路以及电容性负载驱动电路的控制方法
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申请号： US15001619申请日： 2016-01-20
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公开(公告)号： US09475283B2公开(公告)日： 2016-10-25
- 发明人: Takafumi Sano
- 申请人： Seiko Epson Corporation
- 申请人地址： JP
- 专利权人： Seiko Epson Corporation
- 当前专利权人： Seiko Epson Corporation
- 当前专利权人地址： JP
- 代理机构： Harness, Dickey & Pierce, P.L.C.
- 优先权： JP2015-028477 20150217
- 主分类号： B41J29/38
- IPC分类号： B41J29/38 ; B41J2/045
摘要：
A liquid discharging apparatus includes a modulation portion that generates a modulation signal obtained by pulse-modulating a source signal; an amplifier that includes a first gate driver generating a first amplification control signal based on the modulation signal, a second gate driver generating a second amplification control signal based on the modulation signal, a first transistor operating based on the first amplification control signal, a second transistor connected to the first transistor on a low-potential side in series and operating based on the second amplification control signal; an operation control portion that controls operations of the first gate driver and the second gate driver; a low-pass filter that generates a driving signal by demodulating an amplification modulation signal generated based on operations of the first transistor and the second transistor; and a piezoelectric element that is displaced by applying the driving signal.
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