Patent ID: 7735947
Filing Date: 2010-06-15
Classification: B41J

Abstract:
1. A droplet ejecting apparatus including a pressure chamber filled with a liquid and an electromechanical transducer which changes the pressure in said pressure chamber according to an applied voltage, the droplet ejecting apparatus comprising: a droplet ejecting head which ejects a droplet according to said pressure change; and an applying unit which applies the voltage including an ejecting pulse and a reverberation amplifying pulse to said electromechanical transducer, the ejecting pulse ejecting said droplet and having a pulse width set at substantially ½ of the resonance period of said pressure change, the reverberation amplifying pulse being applied to said electromechanical transducer after the ejecting pulse, an interval between said ejecting pulse and said reverberation amplifying pulse being set at substantially ½ of the resonance period of said pressure change, and the reverberation amplifying pulse amplifying the pressure change in the next cycle of said droplet ejecting head subsequent to the cycle of the pressure change generated by said ejecting pulse in said pressure chamber.