发明名称 KOGAKUSHIKIJOHOKIROKUDEISUKU
摘要 PURPOSE:To obtain an optical disk which has no warp and can secure a satisfactory reflection factor by using a dielectric multi-layer film to a reflecting film. CONSTITUTION:The information is contained in the form of bits on a single side of a disk-shaped base board 1 and a dielectric multi-layer film is formed on the board 1 as a reflecting film 2. This film 2 has the increase of heat conductivity with use of a metal such as Al, etc. and can reflect the semiconductor laser light that is used for reading the information recorded on a disk. Thus the function of a reflecting film is attained and at the same time the warp of the disk can be prevented.
申请公布号 JP2639907(B2) 申请公布日期 1997.08.13
申请号 JP19850199866 申请日期 1985.09.10
申请人 SANYO DENKI KK 发明人 SAKAMOTO SADAO;UCHIHARA KAJI;OOTANI KEIICHI;NAGAYA NAOYUKI;HIGUCHI MASAHIRO
分类号 G11B7/24;G11B7/258 主分类号 G11B7/24
代理机构 代理人
主权项
地址