| 摘要 |
PROBLEM TO BE SOLVED: To obtain an optical recording medium which has a reflection film having high reflectivity and excellent corrosion resistance and is low in cost by forming the reflection film of the optical recording medium provided with the reflection film on a substrate of a thin film having a compsn. formed by incorporating specific ratios of Ni and Fe into Cu. SOLUTION: A compact disk (CD-R) 1 which is one form of the optical recording media is formed by laminating a dyestuff film 4 as a recording layer, reflection film 3 and a protective film 5 in this order on the substrate 2 transparent to the light to be used. The reflection film 3 is formed of the thin film having the compsn. contg. 75 to 99atm.% more preferably 70 to 90atm.% Cu, 1 to 25atm.%, more preferably 5 to 20atm.% Ni and 0.1 to 5atm.% Fe. The total content of the Cu, Ni and Fe is preferably <=99.5atm.%. The reflection film 3 is formed by a sputtering method, etc., on the dyestuff film 4 and the film thickness thereof is preferably 50 to 150nm. |
