| 摘要 |
PROBLEM TO BE SOLVED: To prevent the double reflection of printed matter so as to obtain visibility and to improve the adhesive power to stick disks to each other by forming a substrate not to be recorded with signals as the rough surface of an optical low-reflection surface. SOLUTION: The first optical disk substrate 11 has a rugged pattern surface 11A recorded with signals and a signal recording surface 11C formed with a first reflection film layer 11B. The second optical disk substrate 12 is the dummy substrate not to be recorded with the signals and has the matte surface 12C of the low-reflection surface having low optical reflectivity and the disk surface 12D printed with a disk label LA stated with the contents recorded in the disk. Next, the signal recording surface 11C of the optical disk substrate 11 and the rough surface 12C of the optical disk substrate 12 are stuck as sticking surfaces to each other by an adhesive 13, by which the laminated disk 10 is formed. As a result, the double reflection on the matter with which the printing region is printed is prevented and the visibility is obtd. The adhesive power for sticking the disks to each other is improved. |
