| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface processing apparatus for realizing a corona discharge process with stable discharge, by solving difficulty of alignment between an electrode and a processing part by the corona discharge process. SOLUTION: In the surface processing apparatus 1, a corona discharging electrode 14 is put opposite to a processing face of a printed board 16, on which a hole 161a used for a via hole to be processed by the corona discharge is formed. The electrode 14 is composed of a bar-like metallic electrode 141, a first dielectric member 142 for covering the outer circumferential part of the metallic electrode 141 in an elongated direction, and second dielectric members 143a to 143c for covering part of the outer circumferential part of the first dielectric member 142 in the elongated direction. While the second dielectric members 143a to 143c are jointed to the part of the processing face other than the position of the hole 161a for the via hole, the corona discharging electrode 14 is shifted relatively to the printed board 16 to treat the processing surface by the corona discharge.
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