发明名称 OPTICAL RECORDING MEDIUM
摘要 PURPOSE:To prevent secular change, by providing an inorganic material film which prevents water from penetrating a light absorbing layer. CONSTITUTION:The light absorbing layer 2 and a heat shielding layer 6 are formed on a substrate 1. Preventive layers 7 and 7' made of inorganic material films are formed on the heat shielding layer 6 and under the substrate 1 respectively. The preventive layers 7 and 7' uses silicon oxide, silicon dioxide, magnesium fluoride, aluminum oxide, etc. A film having 500-5,000Angstrom thick is sufficient.
申请公布号 JPS58199449(A) 申请公布日期 1983.11.19
申请号 JP19820083484 申请日期 1982.05.18
申请人 NIPPON DENKI KK 发明人 OKADA MITSUYA
分类号 G11B7/24;G11B7/254;G11B7/257 主分类号 G11B7/24
代理机构 代理人
主权项
地址