Patent ID: 8590995
Filing Date: 2013-11-26
Classification: B41J

Abstract:
1. A liquid ejecting apparatus comprising: a liquid ejecting head that has a nozzle for ejecting liquid, a pressure chamber in communication with the nozzle, and a pressure generator of deforming an operation surface for sealing an opening surface of the pressure chamber to induce pressure fluctuation in liquid within the pressure chamber and that ejects liquid from the nozzle by activation of the pressure generator; an activation signal generator that generates an activation signal for activating the pressure generator; and a select-and-supply unit that selects an activation pulse contained in an activation signal generated by the activation signal generator and that supplies the pulse to the pressure generator, wherein the pressure generator is configured such that, as an applied electric potential increases above a standard electric potential corresponding to a standard condition where a central portion of the operation surface is located inside of the pressure chamber from the opening surface of the pressure chamber, the central portion of the operation surface is displaced from the standard condition to further inside of the pressure chamber, and, as an applied electric potential decreases below the standard electric potential, the central portion of the operation surface is displaced from the standard condition to outside of the pressure chamber, wherein the activation signal generator includes in the activation signal an ejection activation pulse for ejecting liquid from the nozzle, and a non-ejection activation pulse for inducing pressure fluctuation in liquid within the pressure chamber of a level such that liquid is not ejected from the nozzle, wherein a minimum electric potential of the non-ejection activation pulse is no greater than a minimum electric potential of the ejection activation pulse, and wherein the select-and-supply unit supplies the ejection activation pulse to a pressure generator corresponding to an ejecting nozzle ejecting liquid, and supplies the non-ejection activation pulse at least to a pressure generator corresponding to a non-ejecting nozzle located adjacent to the ejecting nozzle.