Patent ID: 8131060

Claim:
A process control method for a surface mount line including a solder printer configured to print solder on a surface of a substrate, a solder print inspector configured to inspect the printed solder and outputting printing quality data, a mounter configured to mount components on the substrate with the solder printed, a mount inspector configured to inspect a state of the mounted components and outputting mounting quality data, a reflow furnace configured to heat the solder to solder the components to the substrate, and a soldering inspector configured to inspect a state of the soldering and outputting soldering pass/fail data, the process control method comprising: retrieving the printing quality data, the mounting quality data, and the soldering pass/fail data from a primary recorder with the printing quality data, the mounting quality data, and the soldering pass/fail data recorded therein, calculating representative data for each of the components from the printing quality data, and recording the representative data, the mounting quality data, and the soldering pass/fail data for each of the components in a secondary recorder; and determining whether the solder printer and the mounter need adjustment by using the data of the components with the soldering pass/fail data indicating conforming among the data recorded in the secondary recorder by a computer, wherein the printing quality data includes numerical data representing a shape of the solder printed on each electrode of the substrate, the representative data includes statistics obtained by aggregating the numerical data for each of the components, and the statistics includes an average and a standard deviation of the numerical data.