Patent ID: 8827399
Filing Date: 2014-09-09
Classification: B41J

Abstract:
1. An inkjet recording apparatus comprising: a head body including plural pressure chambers to which ink is supplied and a piezoelectric member that is deformed according to an applied voltage to change volume of each of the plural pressure chambers; plural electrodes provided in the piezoelectric member to respectively correspond to the plural pressure chambers; a nozzle plate arranged to close the plural pressure chambers, plural nozzles respectively opened in the plural pressure chambers being provided in the nozzle plate; and a control section electrically connected to the plural electrodes, the control section applying, to the electrode corresponding to each of the pressure chambers, an ejection pulse that includes a first voltage change process for applying a voltage for increasing the volume of the pressure chamber and a second voltage change process for applying a voltage for reducing the volume of the pressure chamber, has width equal to or larger than 0.95 times and equal to or smaller than 1.05 times of a pressure propagation time in the pressure chamber, and ejects the ink from the nozzle, or a non-ejection pulse that has width equal to or larger than 0.2 times and equal to or smaller than 0.34 times of the width of the ejection pulse and stops the ink in the nozzle in order to suppress formation of satellite dots.