HEAD ALIGNMENT APPARATUS FOR INK JET PRINTER FOR MANUFACTURE OF PLASMA DISPLAY PANEL, CAPABLE OF ALIGNING PRINT POSITION SUCH THAT DEPOSITION OPERATION STARTS AND ENDS AT THE SAME PRINT POSITION

摘要

PURPOSE: A head alignment apparatus is provided to achieve improved print quality by aligning the print position such that deposition operation starts and ends at the same print position in case of depositing phosphors or electrodes on a plasma display panel. CONSTITUTION: A head alignment apparatus comprises a plurality of heads(H1 to H7) having individually controllable nozzles, wherein the heads are arranged in a phase difference; a head driving unit(50) for individually controlling each of the heads; a position sensor(30) for sensing the relationship of positions between a plasma display panel(10) and the heads; and a head control unit(40) for judging positions of the plasma display panel and the heads in accordance with the signal output from the position sensor, and outputting a control signal to the head driving unit. The control signal is output in consideration of a preset phase delay time for starting or ending printing operation of heads and a preset print delay time for the nozzles of each of heads.