| 摘要 |
PURPOSE:To obtain subject medium for an optical disk which has a high recording sensibility, and is excellent in reading signal S/N ratio and release characteristics from a stamper by providing, adjacent to a recording layer on a substrate, an intermediate layer consisting of high polymer which contains fluorine surfactant. CONSTITUTION:Between a substrate and a recording layer which enables writing and/or reading of informations with laser, an intermediate layer consisting of (B) high polymer (preferably thermoplastic resin, photo-setting resin) which contains (A) fluorine surfactant (for instance: the chemical compound etc, as expressed in the formula,) is provided adjacent to a recording layer on a substrate, and thus, subject medium is obtained. Additionally, it is recommended that the constituent (A) is contained within the range of 0.001-2% by weight against constitutent (B), and further, it is preferable to provide an undercoat layer which contains the constituent (A) between the intermediate layer and the substrate. |
