| 摘要 |
PROBLEM TO BE SOLVED: To provide an instrument case and an electronic instrument capable of keeping rigidity and not obstructing the detection of earth magnetism. SOLUTION: In a portable telephone 10 equipped therein with electronic parts 14, a substrate 15, and a bearing sensor 19, etc., electroless copper plating is applied to opposite surfaces of core sections (e.g. core 11a) of an upper case 11 and a lower case 12 constituting an instrument case 13 in the thickness of about 0.1μm. Further, copper electroplating is applied thereonto in the thickness of about 20μm, onto which phosphorus-nickel electroplating is applied with the content of nickel of from 83% to 90% in the thickness of about 5 to 7μm. COPYRIGHT: (C)2004,JPO
|
