Liquid-discharging head for producing toner

A liquid-discharging head including a reservoir for a spray liquid, a nozzle plate having a plurality of nozzles from which the spray liquid reserved in the reservoir can be discharged, and a vibration generating unit having a vibrating surface facing the nozzle plate, wherein the reservoir is divided into a plurality of liquid chambers, wherein the vibration generating unit has elongated convex portions in a plurality of rows, the elongated convex portions being made of a piezoelectric element, wherein each of the liquid chambers is provided so as to correspond to one of the elongated convex portions, and wherein the liquid-discharging head is used in a method for producing particles, and the method comprises periodically discharging liquid droplets of the spray liquid from the nozzles and solidifying the liquid droplets so as to form particles