| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed circuit board using a material such as paper or phenol, which can improve the strength of a member such as a sacrificial board part by forming a silk screen printed pattern on it. SOLUTION: In a printed circuit board 1 which is made of a combination of a sacrificial board part 5 and a circuit board part 2, the board part 5 is provided to the circuit board part 2 on which an electronic part is to be mounted, through a cut part 9 provided between the board parts, the board part 5 is subjected to a silk screen printed pattern 7 or the like to reinforce the board part 5. The silk screen printed pattern formed on the board part 5 is provided with slits 8 at predetermined intervals to avoid influences caused by shrinkage of the pattern.
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