| 摘要 |
PROBLEM TO BE SOLVED: To perform inductance inspection of coil patterns formed, respectively, in a plurality of product areas accurately and efficiently.SOLUTION: A multiple piece printed wiring board 1A includes an insulation sheet 2 sectioned into a plurality of product areas P arranged in matrix, and a reinforcing area Q surrounding each product area P, a coil pattern 3 formed on the insulation sheet 2 in each product area P, a conductive reinforcing layer 4 formed on the insulation sheet 2 so as to cover the insulation sheet 2 in the reinforcing area Q, and eddy current interruption parts 5a, 5b from which the conductive reinforcing layer 4 is removed so that an eddy current induced in the conductive reinforcing layer 4 by a magnetic field generated in the coil pattern 3 does not flow around the product area P where the coil pattern 3 is formed. |
