| 摘要 |
PURPOSE: To keep the fine appearance of an optical disk by making it impossible to see an adhesive through substrates after sticking to each other and to produce a disk using stuck thin substrates and making it easy to discriminate the kind of the disk. CONSTITUTION: A part of a metal mold is made finely rugged and the state of frosted glass is imparted to parts 35, 39 of substrates 31, 32 not coated with reflecting films. An adhesive is not seen through the substrates 31, 32 after sticking to each other at the frosted glass-like parts 35, 39. |
