| 摘要 |
PURPOSE:To provide an optical recording medium generating a high reproduction output with high sensitivity in a wavelength range of semiconductor laser, by a method wherein recording layer in an optical recording medium is constitued of at least two layers of a thin organic film comprising a naphthoquinone dye as a main constituent and a metallic reflective film. CONSTITUTION:In the optical recording medium of the type in which a recording layer is provided on one side of a base and information is recorded and read by a laser beam, the recording layer is constituted of at least two layers of the thin organic film comprising a naphthoquinone dye of the formula (wherein each of R and R' is an auxochrome) as a main constituent and the metallic reflective film. Since the optical recording medium is provided with a multilayer construction by introducing the metallic layer having a high reflectance, when an organic dye is used for a hole-forming layer, a large optical gradation quantity can be obtained by such a construction that the reflectance is enhanced after forming holes. |
