In an ink-jet apparatus employing an ink-jet head having a plurality of
heaters corresponding to one ink ejection opening and performing printing
by ejecting an ink from the ink-jet head, timings of bubble forming are
mutually shifted at respective heaters of the plurality of heaters upon
application of respective pulses to the plurality of heaters and based on
information relating to an ink temperature of the ink-jet head. The
ejection amount can be controlled by forming bubbles in the ink to eject
the ink through the ink ejection opening.