Inkjet printhead

Abstract

Disclosed is an inkjet printhead. The inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method includes a printhead unit comprising a plurality of nozzles, a plurality of first electrodes formed inside the nozzle for each of the plurality of nozzles; a second electrode formed inside the printhead unit and receiving a voltage for ejecting the liquid solution by the electrohydrodynamic method, a voltage controller configured to apply a constant voltage to the second electrode, and a controller configured to control the first electrode to be grounded or be electrically disconnected from the ground, for each of the plurality of nozzles. The controller controls each nozzle individually to eject the liquid solution in such a manner that the liquid solution is not ejected upon the first electrode being grounded but ejected upon the first electrode being electrically disconnected from the ground.

Dependencies are inferred from the claim text.