| 摘要 |
PURPOSE:To eliminate the separation of a metallic layer from a substrate, by forming a metallic layer having high coupling force with an adhesive on a metallic film to which a recording track pattern is formed and then adhering the metallic layer to the substrate. CONSTITUTION:A metallic film 1 uses nickel, and a metallic layer 8 has high coupling force with nickel and high affinity to an adhesive 4. The film 1 is adhered to a substrate 3 with the adhesive 4 and via the layer 8. Copper is suited to the layer 8. It is effective to use zinc, tin, iron, brass, etc. in place of copper in terms of easiness of plating. Furthermore, a metallic oxide film is formed on the layer 8 to increase the coupling force. |
