INK JET RECORDING METHOD, INK JET RECORDING HEAD AND INK JET RECORDING

摘要

PROBLEM TO BE SOLVED: To simplify the driving method by modulating the driving frequency to jet a next ink at the timing when the liquid level of ink is projecting above the surface of ink jet port. SOLUTION: When a pulse is applied under steady state (a) prior to jetting, jetting of main droplet is started to bring about a state (b) prior to liquid separation and a main droplet is jetted through a jet port 8 to bring about a state (c) immediately preceding liquid separation which is followed by a state (d) where the liquid level receded back to the jet port and a state (e) where the liquid level bulges above the jet port before returning back to the steady state (f). The driving frequency is modulated to jet a next ink at the timing when the liquid level of ink is projecting above the surface of ink jet port. Consequently, a third convenient driving method for head other than temperature regulation and pulse width modulation, can be attained.