| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical information medium member with high impact resistance. high moisture resistance and without warpage and dissolving the problems by improving an adhesive are a information and inproving adhesion and sealing property in a In thicken medium sticking two sheets of disks. SOLUTION: The optical information medium is provided with the disk 5 forming a light interference layer 1 and a reflection layer 4 in at least one side surface of a planer translucent substrate 3 and another planer disk 6 stuck to the surface formed with the light interference layer 1 and the reflection layer 4 of the disk 5, and is constituted so that a signal is recorded by forming a pit bringing interference of light partially different from other parts to incident light and reflect light of reproducing laser light on the light interference layer 1 by the irradiation of a recording laser light from the translucent substrate 3 side. Margin parts a, b without forming the light interference layer 1 are provided on an outer perioheeal side and an inner peripheral side of a signal recording area c recording a signal on the disk 5, and the surface containing the margin parts a, b of the side provided with the light interference layer 1 of the disk 5 is stuck with another disk 6. The width of the margin parts a, b of the disk 5 are made 0.1mm or above. |
