| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk having good environment resistance using a material made of silver (Ag), aluminum (Al) and oxygen (O) as a reflecting layer, and also to provide an optical disk drive using this optical disk. <P>SOLUTION: In the optical disk with an information recording layer in which information is recorded by a pit-form pattern, this information recording layer comprises three or more layers (layer L0, layer L1, layer L2...), and a reflection film used for layers except for a layer farthest from a light incident side is made of Al (aluminum), Ag (silver) and oxygen (O). <P>COPYRIGHT: (C)2009,JPO&INPIT |
