OPTICAL DISK, OPTICAL DISC DEVICE, OPTICAL DISK RECORDING METHOD AND OPTICAL DISK DRIVING METHOD

摘要

An optical disc is provided with a first recording layer (102) positioned in front and a second recording layer (103) positioned at rear when viewed from recording light, and records information by the recording light. The first and the second recording layers are provided with power adjusting areas (P1, P2) for adjusting optimum recording power for recording the information. At the time of performing the optimum recording power adjustment for the power adjusting area (P2) of the second recording layer, the power adjusting area of the first recording layer corresponding to the power adjusting area (P2) of the second recording layer used for the power adjustment and the limited areas (A1, A2) on the both sides of the power adjusting area of the first recording layer are provided as a prewrite area (PW). The limited areas (A1, A2) are provided by considering a shift quantity due to bonding and the diameter of the recording light. In an optical disc having a plurality of recording layers, stable test recording can be performed in a short time. ® KIPO & WIPO 2007