Nozzle bottom pool detection method and device

Abstract

Problem: To provide a technology that enables easy and highly-accurate determination on a pool that has occurred at a bottom end of a nozzle. Solution: Provided is a nozzle bottom pool detection method in a liquid material discharge device, the method including: a first process of moving a nozzle 103 to a sensing position above a sensing surface; a second process of moving the nozzle 103 downward until an interval between a bottom end of the nozzle 103 and the sensing surface 107a becomes equal to a predetermined sensing distance L and moving the nozzle 103 upward upon the interval reaching the predetermined sensing distance L; and a third process of detecting a pool at the bottom end of the nozzle 103 by a sensing device 104 sensing whether a liquid material adheres to the sensing surface 107a. Also provided is a detection device that executes the same method.

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