Patent ID: 7980645

Claim:
A droplet applying apparatus comprising: a base having a mounting surface on which a substrate is to be mounted; a beam member which confronts the mounting surface and extends in one direction of the mounting surface and which is fitted to the base so as to be movable relative to the base in another direction of the mounting surface; a plurality of droplet ejecting sections which are removably fitted to the beam member and which eject and apply droplets from ejecting surfaces thereof to the substrate; reference members each of which is provided at a site of the beam member proximate to the ejecting surface of each droplet ejecting section and whose distance to the mounting surface is known; a distance measuring section which is fitted to the base so as to be movable relative to the beam member and which confronts the ejecting surface of each droplet ejecting section to measure a distance to the ejecting surface of the droplet ejecting section and moreover which confronts each reference member to measure a distance to the reference member; and a calculation section for, based on a distance between the ejecting surface of one of the droplet ejecting sections and the distance measuring section as well as a distance between one of the reference members proximate to the ejecting surface of the one droplet ejecting section and the distance measuring section, both measured by the distance measuring section, plus a known distance between the one reference member and the mounting surface, calculating a gap between the ejecting surface of the one droplet ejecting section and the mounting surface.