| 摘要 |
PROBLEM TO BE SOLVED: To obtain an optical information medium which obviates the contamination of the recording surfaces of disks with an adhesive and the occurrence of the misalignment of a clamping pin position by the adhesion of the adhesive to center holes. SOLUTION: This optical information medium has a disk 1 formed with an information recording layer 2 on its one surface and another disk 5 stuck to the surface of the disk 1 formed with the information recording layer 2 via an adhesive 11. Margin regions (m) are formed at the circumferences of the center holes 4 of the disks 1, 5 and the adhesive 11 is not adhered thereto. The adhesive 11 is, therefore, not adhered to the peripheral surface of the center holes 4. The adhesive 11 does not infiltrate to the recording surface on the side opposite to the adhesive surfaces of the disks 1, 5 through the center holes at the time of applying the adhesive 11 on the disks 1, 5. |
