| 摘要 |
PROBLEM TO BE SOLVED: To provide the forming/processing method of display in a printed board for maintaining security, by disabling the reading of display after manufacture without troubles in the manufacture process of the printed board by displaying information on components loaded on the printed board on the printed board. SOLUTION: Fine projecting and recessing parts are arranged on the surface of resist (c) applied to the printed board, and the display of a character and the like is formed. A coating (d) is given to the projecting and recessing parts (b), after the components are loaded. Thus, the surface is smoothed by burying the projecting and recessing parts, and the reading of display is disabled.
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