Patent ID: 8016377

Claim:
An inkjet recording apparatus comprising a head which includes: a plurality of nozzles each of which jets ink containing spacer beads dispersed therein on a substrate; a plurality of pressure chambers respectively communicating with the plurality of nozzles; a plurality of electromechanical transducers, wherein a capacity of each pressure chamber is changeable by supplying a voltage pulse to corresponding ones of the plurality of electromechanical transducers, and wherein the ink is jettable from each nozzle by applying to the corresponding electromechanical transducers, the voltage pulse which includes a first pulse for increasing the capacity of the pressure chamber and then decreasing the capacity of the pressure chamber after a lapse of a predetermined time; and a drive signal generating section which generates the first pulse, wherein, when a half of an acoustic resonance period of a pressure wave in the pressure chambers is assumed as AL, a width of the first pulse is set to be at least twice of the AL and an even number of times of the AL, wherein the plurality of electromechanical transducers form partitions which separate adjacent pressure chambers and are made up of piezoelectric elements which deform in a shear mode when the voltage pulse is applied.