| 摘要 |
PROBLEM TO BE SOLVED: To align the position of each information recording area in optical information recording layers in a multilayered structure with high accuracy. SOLUTION: In this multilayered recording medium, at least a first and a second information recording layers 11, 12 are laminated. The substrate 1 on which at least one of the first and the second information recording layers 11, 12 is formed has a mark M for optical alignment in the area out of the information recording area so as to match the relation of position of each information recording area. |
