Patent ID: 8348374

Claim:
An ink jet recording apparatus comprising: a plurality of partition walls which partition between a plurality of pressure chambers corresponding to and communicating with a plurality of ink ejection nozzles and can change the volumes of the pressure chambers in accordance with a drive signal supplied; a plurality of electrodes which are provided so as to correspond to the plurality of pressure chambers; and a drive signal generation portion which supplies drive signals to an electrode corresponding to a first pressure chamber which is to eject ink and an electrode corresponding to a second pressure chamber adjacent to the above first pressure chamber to generate a square-wave electric field pulse that is applied to a partition wall of the first pressure chamber which is to eject ink, wherein when ink is ejected from any one of the plurality of pressure chambers, the drive signal generation portion applies to a second partition wall adjacent to a first partition wall of a pressure chamber which is to eject ink, at a timing corresponding to an electric field pulse which is applied to the first partition wall, an electric field pulse having at least one square wave, which is in a direction opposite to that of the electric field pulse which is applied to the first partition wall and has a pulse width which is determined on the basis of the electric field pulse which is applied to the first partition wall of the pressure chamber which is to eject ink.