INK DISCHARGING METHOD AND INKJET PRINTING HEAD ADOPTING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an ink discharging method, and an inkjet printing head adopting the same. SOLUTION: The ink discharging method has a stage in which ink is filled by a capillary force into a rear end of a nozzle surrounded by a hydrophilic membrane; a stage in which an electric field advancing to an outlet side of the nozzle is formed at a leading end of the nozzle surrounded by a hydrophobic membrane, and the surface tension of the ink is changed, whereby liquid droplets having a predetermined volume are separated from the ink and moved to the outlet side of the nozzle; and a stage in which the liquid droplets are discharged to the outside through the outlet of the nozzle. COPYRIGHT: (C)2004,JPO&NCIPI