| 摘要 |
PROBLEM TO BE SOLVED: To provide a soldering method of printed board by which presence of a solder on a printed board can be easily identified. SOLUTION: In the method for soldering a thread solder to the printed board by melting by a soldering iron, after coloring the surface of the thread solder, before melting, with a dye melted in an alcohols solvent, the thread solder is soldered to the printed board, and the dye is, with a flux, scattered to the surface of the solder after soldering, to color the surface of the solder. COPYRIGHT: (C)2009,JPO&INPIT |
