| 摘要 |
PURPOSE:To increase the adhesive strength of a hub and veneer by fitting a metal made hub to the inner peripheral part of the optical disk veneer sticking a recording film and forming the disk of a contact structure by laminating two sheets with the recording film face at the inner side. CONSTITUTION:An optical disk veneer 2-1 is formed by sticking the recording film varying the physical property by light on the light transmitting substrate having an uneven pattern on the surface. A metal made hub 1-1 is adhered on the inner peripheral part of this veneer 2-1, closely fitted by an adhesive 1-2 so as to laminate two sheets with the recording film face at the inner side and an optical disk 1 is formed. A step difference is provided on the hub 1-1 and since the inner side of the veneer 2-1 and the surface are closely fitted to the hub 1-1 by this step difference part, the adhesive area can be widened. The adhesion of the hub and veneer is thus strengthened and the attachment and detachment of a disk are facilitated because of the inner diameter part being made of a metal. |
