| 摘要 |
PROBLEM TO BE SOLVED: To suppress flying of droplets discharged from two or more outlets corresponding to one individual channel in a separating direction from each other.SOLUTION: A driving signal that satisfies 0.85 Ta≤T≤0.9 Ta or 1.2 Ta≤T in the case of p/D≤1.2 and 0.85 Ta≤T in the case of p/D>1.2 is supplied to an actuator, where p is a distance between the centers of two or more outlets constituting an outlet group in a discharge surface in which the outlets of a nozzle plate is opened, D is a diameter of the opening of a nozzle hole having two or more outlets constituting the outlet group at its tip in a surface opposite the discharge surface of the nozzle plate, Ta is a resonance period of an individual channel, and T is a cycle of a driving signal corresponding to one pixel. |
