US Patent 7128387 Droplet discharging device and manufacturing method of microcapsule

Provided is a droplet discharging device (1) enabling the manufacture and discharge of microcapsules. A solution (16) containing the core material and shell material of the microcapsule is temporarily stored within a discharge tank (11) to which is disposed the oscillating body (12) of the droplet discharging device(1), and microcapsules are formed within the solution by oscillating the oscillating body (12) at a high frequency f1 and levigating the core material. Thereafter, the oscillating body (12) is operated at a relatively low frequency f2 in which the solution is able to respond, the solution is pushed outside from the tank (11), small amounts of the solution containing the microcapsule are discharged from the discharge nozzle (13), and microcapsules are applied to the target body.