Patent ID: 7524025

Claim:
An inkjet printer having a liquid injecting head comprising: a liquid chamber filled with liquid and connected to a liquid storage tank; a capillary nozzle connected to said liquid chamber; a discharge unit comprising a piezoelectric element which deforms to pressurize the liquid filled in said liquid chamber to thereby eject the liquid through an outlet of said capillary nozzle toward an object to be printed, wherein the liquid is ejected substantially perpendicular to the object; a negative pressure generating unit comprising an air nozzle located at a position in a vicinity of said outlet of the capillary nozzle and thereby being enclosed in a same opening, and applying a negative pressure via air injection through the air nozzle initially in a same direction in which the liquid is ejected from said outlet of the capillary nozzle; and a control unit controlling both a timing of the air ejection through the air nozzle, and a timing of liquid ejection through said outlet of said capillary nozzle by the piezoelectric element, wherein said air nozzle discharges pressurized air in the direction in which the liquid is ejected.