Patent ID: 7815286
Filing Date: 2010-10-19
Classification: A62C,B41J

Abstract:
1. A mist ejection head comprising: a nozzle ejecting a liquid in a form of a mist; a liquid chamber connected to the nozzle; an ultrasonic wave generating element which is disposed on a side wall of the liquid chamber and which generates an ultrasonic wave in such a manner that the ultrasonic wave is applied to the liquid inside the liquid chamber; and a reflector having a reflecting surface which reflects the ultrasonic wave generated by the ultrasonic wave generating element in such a manner that the ultrasonic wave is directed toward a center of the liquid chamber and concentrated at a focal point situated in a vicinity of the nozzle inside the liquid chamber, wherein the liquid chamber has a cylindrical shape having an axis passing through the focal point, and the reflector has a protrusion shape having the reflecting surface formed by rotating, around the axis of the liquid chamber, a parabola having a central axis which is perpendicular to the axis of the liquid chamber.