Patent ID: 7845749

Claim:
A liquid-ejecting apparatus comprising: a nozzle member having a nozzle for ejecting liquid therefrom; a liquid chamber formed corresponding to the nozzle; an element disposed within the liquid chamber for generating energy for ejecting liquid contained in the liquid chamber from the nozzle as a liquid-droplet group; and an electric circuit unit for generating a pulse signal for feeding said pulse signal to the element, wherein the ejection amount of each liquid droplet of the liquid-droplet group continuously ejected from the nozzle toward one landing point is fixed or approximated at a constant corresponding to a frequency band of the pulse signal of approximately 1 kHz to 10 kHz, and liquid is ejected by controlling a drive frequency of the pulse signal which can be set within the frequency band, wherein the element is for pushing and ejecting liquid from the nozzle by heating the liquid contained in the liquid chamber so as to generate bubbles.