A liquid jet apparatus according to the present invention includes a plurality of nozzles, an actuator provided for each nozzle and connected to the respective nozzle, and a drive unit for applying a drive signal to the actuator. The drive unit includes a drive waveform generator that generates a drive waveform signal for controlling the drive of the actuator, a modulator for performing a pulse modulation of the drive waveform signal to produce a modulated signal, a digital power amplifier for power amplifying the modulated signal to produce an amplified signal, a low-pass filter for smoothing the amplified signal and supplying the drive signal to the actuator, and a modulation signal correcting unit that corrects the modulated signal according to a power supply voltage of the digital power amplifier.

Claims

4 · 2 independent · depth 2

4 granted claims

›1.independentA liquid jet apparatus comprising:na plurality of nozzles;an actuator provided for each nozzle and connected to the respective nozzle; anda drive unit…+1

›3.independentA printing apparatus comprising:na feeding unit that feeds a print medium to the printing apparatus;a plurality of nozzles;an actuator provided for ea…+1

Classifications

5 codes

IPC · International Patent Classification

Section B — Performing operations; transporting

B41J29/38

Section H — Electricity

H03F3/38

USPC · US Patent Classification

347/10347/14330/10

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Pendency

2.1 y

771 days filing → grant

Office actions

non-final + final

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2 RCE

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Examiner

Shelby Fidler

art unit 2861 · TC 2800

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Citations: 135 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20100091059 A1	15 Apr 2010

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