METHOD FOR DRIVING INK JET PRINTER HEAD CAPABLE OF REDUCING DAMAGE OF HEATER CAUSED BY BUBBLES

摘要

PURPOSE: A method for driving an ink jet printer head is provided to reduce a damage of a heater derived from bubbles and to expand life span of the ink jet printer head by improving a driving signal. CONSTITUTION: A method for driving an ink jet printer head includes a step of generating and expanding bubbles by heating ink stored in an ink chamber by periodically applying a driving signal(110) to a heater. Ink is exhausted from the ink chamber by an expanding power of the bubbles. The driving signal includes a first signal(110a) used for exhausting the ink and a second signal(110b) used for adjusting a movement of the bubbles. A voltage of the second signal(110b) is gradually reduced from a rear end of the first signal(110a) as time goes by. A voltage of the second signal(110b) is linearly or non-linearly reduced as time goes by.