In an ink jet head driving method, a first drive pulse signal is transmitted to a first actuator that is formed in a first ink chamber confronting a print area on a recording medium and from which ink is to be discharged. The first drive pulse signal comprises a reserve drive pulse signal transmitted to temporarily increase a volume of the ink chamber and a discharge drive pulse signal transmitted sequentially with the reserve drive pulse signal to temporarily reduce the volume of the ink chamber and thereby cause ink to be discharged from the first ink chamber. In synchronization with the reserve drive pulse signal, a second drive pulse signal is transmitted to a second actuator that is formed in a second ink chamber confronting a non-print area of the recording medium adjacent to the print area thereof and that is configured to discharge ink. The second drive pulse signal has one of a voltage value and a pulse width at which the volume of the second ink chamber is varied but does not cause ink to be discharged from the second ink chamber.