| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical information medium which surely records data even when output characteristic of a laser beam is unstable. <P>SOLUTION: The optical information medium has a recording layer 4 formed on a substrate 2 by including a first sub recording film 4a made of a first material primarily consisting of Si and a second sub recording film 4b formed in the vicinity of the first sub recording film 4a and made of a second material primarily consisting of Cu with added Sn, and to record (formation of recording section M) and reproduce data by radiating the laser beam L on the recording layer 4. <P>COPYRIGHT: (C)2009,JPO&INPIT |
