Patent ID: 8740332

Claim:
An inkjet head driving method for driving an inkjet head having a nozzle plate with a plurality of discharge nozzles and a property in which heat is generated during a plurality of drawing operations of a drawing process with the drawing operations being repeatedly performed with a predetermined drive cycle, with drive waveforms being applied to piezoelectric element sections connected to the discharge nozzles, respectively, based on drawing data in each of the drawing operations, the inkjet head driving method comprising: applying a discharge waveform, which is a first one of the drive waveforms that causes discharging of ink, to at least one driven nozzle among the discharge nozzles that discharges the ink based on the drawing data in one of the drawing operations after commencing the drawing process; and applying a non-discharge waveform, which is a second one of the drive waveforms that does not cause discharging of the ink, to at least one non-driven nozzle among the discharge nozzles that does not discharge the ink based on the drawing data in the one of the drawing operations after commencing the drawing process, the at least one non-driven nozzle being different from the at least one driven nozzle, the applying of the discharge waveform and the applying of the non-discharge waveform including applying the drive waveforms to the piezoelectric element sections so that a temperature fluctuation along the discharge nozzles on the nozzle plate of the inkjet head is suppressed during the one of the drawing operations.