| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an information recording medium which has three or more recording layers and can record information on conditions suitable in each recording layer and to provide an information recording device. <P>SOLUTION: In the information recording medium having n recording layers (n≥3) mutually layered and each having a test recording zone for determining the recording power, when the n layers are counted from the one that is located most distant from the surface of the medium in which a laser beam is made incident, there is a bigger radial location difference between the outer peripheral end of the inner one of the test recording zones of ith and (i+1)th recording layers (where i is an integer that satisfies 2≤i≤n-1) and the inner peripheral end of the other outer test recording zone than between the outer peripheral end of the inner one of the test recording zones of jth and (j+1)th recording layers (where j is an integer that satisfies 1≤j≤i-1) and the inner peripheral end of the other outer test recording zone. <P>COPYRIGHT: (C)2011,JPO&INPIT |
