| 摘要 |
PURPOSE:To prevent partial oxidation deterioration of a metallic thin film such as a reflecting film and to produce an optical recording medium having high reliability. CONSTITUTION:A phosphoric acid content in a UV curing resin layer laminated on a metallic thin film such as an Al reflecting film formed on a substrate is <=25ppm. A flucculated matter mixing the phosphoric acid and water is not present in this UV curing resin layer. |
