| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve rust-prevention by forming a plated layer while burring on an amputated edge face of a board comprising a plated steel plate. <P>SOLUTION: In a case body that houses an electronic apparatus in combination with a plurality of boards 14, in the board 14, a first plated layer 9 is prepared on one part of a steel plate 11 and a second plated layer 10 is prepared on the other part, and in edge faces which cut off the board 14 with predetermined dimension, a third plated layer 20 that is eroded by the first plated layer 9 on one edge face and a fourth plated layer 21 that is formed by folding back a burr 16 with the second plated layer 10 on the other edge face is disposed. <P>COPYRIGHT: (C)2011,JPO&INPIT |
