Liquid droplet ejecting method, liquid droplet ejection apparatus, inkjet recording apparatus, production method of fine particles, fine particle production apparatus, and toner

摘要

A liquid droplet ejecting method for ejecting a liquid from at least one ejection hole to form the liquid into liquid droplets, the method including: applying a vibration to the liquid in a liquid column resonance-generating liquid chamber, in which the ejection hole is formed, to form a standing wave through liquid column resonance, and ejecting the liquid from the ejection hole, which is formed in a region corresponding to an antinode of the standing wave, to form the liquid into liquid droplets.

主权项

1. A liquid droplet ejecting method, the method comprising:
applying a vibration to a liquid in a liquid column resonance-generating liquid chamber, in which an ejection hole is formed, to form a standing wave through liquid column resonance;
wherein the vibration applied to the liquid has a frequency f satisfying Equation (2):
N×c/(4L)≦f≦N×c/(4Le)  (2);L represents a length of the liquid column resonance-generating liquid chamber in a longitudinal direction thereof;Le represents a distance between an end of the liquid column resonance-generating liquid chamber on a liquid feed path side and a center part of the ejection hole nearest to the end of the liquid column resonance-generating liquid chamber;c represents a sound speed of the liquid; andN is a natural number;and wherein the Le and L satisfy Le/L>0.6; and ejecting the liquid from the ejection hole, which is formed in a region corresponding to an antinode of the standing wave, to form liquid droplets.