| 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 a specific ratio of In into Ag. 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 consisting of In-Ag 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. 0.1 to 20atm.% In and 80 to 99.9atm.% Ag, more preferably the thin film having the compsn. contg. 1 to 18atm.% In and 82 to 99atm.% Ag. The total content of the elements exclusive of the In and Ag is preferably <=0.5atm.%. 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. |
