公开(公告)号：EP2437261A1

公开(公告)日：2012-04-04

申请号：EP10780212.6

申请日：2010-05-17

申请人： Sony Corporation ,  SONY DADC Corporation

发明人： SAKAMOTO, Tetsuhiro ,  NAKANO, Jun ,  ENDO, Takehide ,  OKAWA, Naoki

IPC分类号： G11B7/258 ,  G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/2585 ,  Y10T428/24545

摘要： [Object] To provide a durable read-only optical recording medium having less variances in characteristics of a metal reflective film due to a temporal change.
[Solving Means] Provided is a read-only optical recording medium (100) including: a substrate (101); an information recording surface onto which information is recorded by combining pits (P) and lands (L); and a metal reflective film (102) that is provided in contact with the information recording surface and represented by Al 100-x-z X x Z z , where x and z each represent an atomic%, X is constituted of an element including at least Ti, Z is constituted of an element including at least Fe, x is 1.0 to 3.0, and z is 0.05 to 1.0.

摘要翻译： 提供一种耐久的只读光学记录介质，其由于时间变化而具有较小的金属反射膜特性的变化。 [解决方案]提供了一种只读光学记录介质（100），包括：基板（101）; 信息记录表面，其中通过组合凹坑（P）和平台（L）而记录信息; 和与信息记录面接触并由Al 100-xz X x Z z表示的金属反射膜（102），其中x和z各自表示原子％，X由至少包含Ti Z由至少包含Fe，x为1.0〜3.0，z为0.05〜1.0的元素构成。