Patent attributes
An ink jet recording apparatus comprises an ink jet recording head in which a volume of a pressure chamber is caused to vary by deflecting actuators according to drive signals applied between an electrode relative to a pressure chamber from which ink is ejected and actuators relative to two pressure chambers sandwiching the former, and a drive signal generator that generates drive signals for operating the recording head in the four time-divisional drive method. The drive signal generator simultaneously supplies drive signals so that magnitudes of deflections of the outmost actuators 14f and 14i among four actuators disposed close around the pressure chamber 9g from which ink is not to be ejected at a timing when the ink ejection therefrom is enabled in the time divisional driving operation become substantially equal to magnitudes of deflections of the outmost actuators 14b and 14e among four actuators close around pressure chamber 9c from which ink is caused to be ejected, to electrodes relative to the outmost pressure chambers 9f and 9h among three pressure chambers closely disposed with the center on the pressure chamber 9g. Thus, variations in velocity and volume between ink droplets ejected that are caused due to cross-talk between pressure chambers can be reduced.
