An ink-jet recording apparatus comprising: a recording head that includes a plurality of nozzles for discharging ink droplets, a pressure chamber communicating with each of the nozzles, and a pressure generating unit having a piezoelectric material sandwiched between two driving electrodes (36A, 36B) and operated by application of the driving waveform to each of the driving electrodes on the basis of each of a plurality of pieces of discharge data including discharge data for discharging relatively large ink droplet and discharge data for discharging a small ink droplet from the nozzle so as to change the capacity of the pressure chamber and to discharge ink in the pressure chamber from the nozzle; and a driving circuit that generates the driving waveform, wherein the driving waveform has a first driving waveform composed of non-GND waveform, a second driving waveform composed of a non-GND waveform different from the first driving waveform, and a third driving waveform composed of a GND waveform, and a driving voltage V1 of the first driving waveform and a driving voltage V2 of the second driving waveform is |V1| > |V2|; and the driving circuit selects at least the first driving waveform and the second driving waveform or only the first driving waveform at every predetermined time shorter than 1 pixel cycle in accordance with each of the pieces of the discharge data, applies this to one of the two driving electrodes (36A, 36B) of the pressure generating unit and also selects and applies only the second driving waveform to the other so as to operate the pressure generating unit by a differential waveform between the two driving electrodes (36A, 36B). a recording head that includes a plurality of nozzles for discharging ink droplets, a pressure chamber communicating with each of the nozzles, and a pressure generating unit having a piezoelectric material sandwiched between two driving electrodes (36A, 36B) and operated by application of the driving waveform to each of the driving electrodes on the basis of each of a plurality of pieces of discharge data including discharge data for discharging relatively large ink droplet and discharge data for discharging a small ink droplet from the nozzle so as to change the capacity of the pressure chamber and to discharge ink in the pressure chamber from the nozzle; and a driving circuit that generates the driving waveform, wherein the driving waveform has a first driving waveform composed of non-GND waveform, a second driving waveform composed of a non-GND waveform different from the first driving waveform, and a third driving waveform composed of a GND waveform, and a driving voltage V1 of the first driving waveform and a driving voltage V2 of the second driving waveform is |V1| > |V2|; and the driving circuit selects at least the first driving waveform and the second driving waveform or only the first driving waveform at every predetermined time shorter than 1 pixel cycle in accordance with each of the pieces of the discharge data, applies this to one of the two driving electrodes (36A, 36B) of the pressure generating unit and also selects and applies only the second driving waveform to the other so as to operate the pressure generating unit by a differential waveform between the two driving electrodes (36A, 36B).