Invention Grant
US09539804B2 Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving
有权
液体排放装置,头单元,电容性负载驱动电路,以及用于容性负载驱动的集成电路装置
- Patent Title: Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving
- Patent Title (中): 液体排放装置,头单元,电容性负载驱动电路,以及用于容性负载驱动的集成电路装置
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Application No.: US14950495Application Date: 2015-11-24
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Publication No.: US09539804B2Publication Date: 2017-01-10
- Inventor: Takafumi Sano
- Applicant: Seiko Epson Corporation
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2014-253381 20141215
- Main IPC: B41J2/045
- IPC: B41J2/045 ; B41J2/14

Abstract:
There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a gate driver which generates an amplification control signal based on the modulation signal; a boosting circuit which boosts and supplies a voltage to the gate driver; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the gate driver and the boosting circuit are electrically connected to a common ground terminal, and in which a wiring impedance between the ground terminal and the gate driver is smaller than a wiring impedance between the ground terminal and the boosting circuit.
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