| 摘要 |
PURPOSE:To obtain an optical disk having a good productivity and a high reliability by providing as one body a disk supporting body on the center part of a disk substrate, and providing a recording layer on the disk substrate, based on the center part of this disk supporting body as a reference. CONSTITUTION:Two pieces of disks 4 ended a replica process are prepared, one disk 4 is placed on a base 17, and by inserting a positioning pin 18 through a center hole 8 of a hub 1, the disk 4 is positioned on the base 17. Subsequently, an inside periphery spacer 2 and an outside periphery spacer 3 applied an adhesive agent to the upper face and the lower face are placed on a prescribed position, and from on said spacer, the other disk 4 is placed through an adhesive agent 19, and also the positioning pin 18 is inserted through the center hole 8 of the hub 1 in the disk 4. In this way, the lower disk 4 and the upper disk 4 are superposed in a correct position, two pieces of disks 4 and the inside periphery spacer 2 and the outside periphery spacer 3 are stuck as one body, and an optical disk is obtained. |
