Paste applicator

摘要

A paste applicator for drawing a paste pattern on a substrate has X- and Y-axis tables, on which the substrate is mounted, and a paste reservoir tube, a nozzle, a nozzle support and an optical displacement meter all fixed to a Z-axis table in opposite relation to the substrate. The paste reservoir tube and the nozzle are communicated with each other by a horizontal portion of the nozzle support. The horizontal portion is extended to a position below the optical displacement meter so that the nozzle is located close to a measuring point of the optical displacement meter. This arrangement places the nozzle as close as possible to the measuring point of the optical displacement meter, whereby an error between data measured by the optical displacement meter and an actual nozzle-to-substrate gap is substantially eliminated to assure that the paste is applied to the substrate in a desired pattern and configuration.