Patent ID: 6502914
Filing Date: 2003-01-07
Classification: B41J

Abstract:
An ink-jet recording apparatus comprising:a recording head having a piezoelectric vibrator for expanding and contracting a pressure generating chamber connected to a nozzle opening; and drive signal generator for generating a drive signal to be applied to said piezoelectric vibrator so as to drive said piezoelectric vibrator; wherein said drive signal includes an expansion waveform element for changing a voltage so as to expand said pressure generating chamber, a contraction waveform element for changing a voltage so as to contract said pressure generating chamber expanded by said expansion waveform element and jet an ink drop from said nozzle opening, and a vibration damping waveform element which changes from a terminal voltage of said contraction waveform element to a vibration damping voltage so as to expand said pressure generating chamber contracted by said contraction waveform element in order to suppress a residual vibration of a meniscus of said pressure generating chamber after jetting said ink drop, wherein an initial voltage and a terminal voltage of said drive signal are equal to each other and equivalent to a standby voltage which is set as a voltage of said piezoelectric vibrator at a time of non-supply of said drive signal, and wherein said vibration damping voltage lies between said standby voltage and a maximum voltage of said drive signal.