Application head and droplet applying apparatus

A droplet application apparatus comprising:

• at least one application head;
• and
• means of moving the application head, relative to an object to be coated, in X, Y, and Z directions that are different from each other, wherein the application head comprises:
• a liquid storage unit storing a liquid and having a predetermined pressure applied inside;
• a tip discharge opening discharging a droplet;
• a liquid passage from the liquid storage unit to the tip discharge opening;
• a storage-side valve inserted into the liquid passage;
• a discharge-side valve inserted in the liquid passage on a downstream side, relative to the storage-side valve;
• and
• a plunger sliding in a space in communication with an intermediate liquid passage between the storage-side valve and the discharge-side valve and changing volume of liquid in the intermediate liquid passage, wherein
• each of the storage-side valve and the discharge-side valve has a column-shaped part, includes a through-hole penetrating between outer circumferential surfaces of the column-shaped part, and is rotatable within a predetermined angular range, around a center axis of the column-shaped part, and
• each of the through-holes of the storage-side valve and the discharge-side valve communicates with the liquid passage on both sides at a predetermined rotational position and does not communicate with the liquid passage on both sides at rotational positions outside the predetermined rotational position.