LIQUID EJECTING APPARATUS, CONTROL METHOD OF LIQUID EJECTING HEAD, AND CONTROL METHOD OF LIQUID EJECTING APPARATUS

摘要

When a length of a central axis direction of a straight part is L [μm], and a floating speed of a bubble set according to a diameter d of a nozzle, a density ρ of ink, and the diameter r of the bubble is Vr [μm/s], a flushing process is performed by driving an actuator with a flushing pulse within (L+5)/Vr [s] after a nozzle surface is wiped with a wiper so as to perform an ejecting operation. The flushing pulse in the flushing process is preferably a driving waveform which does not actively draw a meniscus in the nozzle toward a pressure chamber side from the initial position, and makes the ink be ejected from the nozzle by extruding the meniscus toward an ejecting side.

主权项

1. A liquid ejecting apparatus comprising:
a liquid ejecting head that includes a pressure chamber communicating with a nozzle and an actuator generating a pressure fluctuation in liquid in the pressure chamber, and is capable of ejecting liquid from the nozzle by an operation of the actuator; and a wiper that wipes a nozzle surface of the liquid ejecting head on which the nozzle is formed, wherein the liquid ejecting apparatus is able to perform a maintenance process by driving the actuator with a driving waveform, wherein the nozzle includes a straight part having a constant inner diameter on at least an ejecting side opposite to the pressure chamber side, and wherein in the case of defining that a floating speed of a bubble set according to the inner diameter d of the second nozzle portion 37b, the density ρ of the ink, and the diameter r of the bubble B is Vr [μm/s] and a length of a central axial direction of the straight part is L [μm], the maintenance process is performed by driving the actuator with the driving waveform within (L+5)/Vr [s] after the nozzle surface is wiped by the wiper so as to perform an ejecting operation.