OPTICAL DISK AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical disk wherein a good push-pull tracking signal is obtained without forming any deep grooves or pits, and its manufacturing method. SOLUTION: After the formation of a reflection layer 102 on a base material 101 in which a groove is formed, a recording layer 103 is applied by a spin- coating method to bury the inside of the groove. Then, a thin transparent base material 104 is stuck to the side of a base material 1 on which recording/ reproducing light is made incident.