INFORMATION STORAGE MEDIUM AND REPRODUCTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an information recording medium which controls the optimal recording power without an influence of the optimal power control area on the other areas.

SOLUTION: The information recording medium includes at least one information recording layer including an optimal power control area for obtaining an optical recording condition. OPC (optimal power control) areas in adjacent information recording layers are disposed within different radiuses of the information recording medium. Accordingly, even when the information recording medium is made eccentric or has a manufacturing error, a recording property of the information recording medium is prevented from being degraded due to an influence of an OPC area in an information recording layer upon an OPC area in an adjacent information recording layer.

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