| 摘要 |
PROBLEM TO BE SOLVED: To prevent intersection of recording tracks even when a recording medium is replaced and a recording position is shifted due to tilting or eccentricity, in sequential recording using laser light for recording and reproducing and laser light for servo.SOLUTION: After sequential recording, a recording track for additional recording which gradually extends, until a separation distance in a track pitch direction from the recorded recording track reaches a separation distance twice or more the maximum number of shifted tracks, is formed during eject, following a sequentially recorded recording track. During additional recording, a recording track for starting additional recording is formed which gradually extends until a separation distance in a track pitch direction from the recorded recording track for additional recording reaches a separation distance twice or more the maximum number of shifted tracks, following the terminal end of the recording track for additional recording. |
