| 摘要 |
PURPOSE:To protect assuredly a loaded optical disk with a simple constitution, by applying a paint mixed with foams to the loading part of the optical disk. CONSTITUTION:A two-pack polyurethane resin paint 75 containing mainly urethane beads 74 expanded to balls of 20-60mu, for example, with proper elasticity is applied to the surface part of a member 73 of synthetic resin, etc. which form front and back holders 22 and 24 of a disk 45. When the disk 45 is loaded and unloaded between the holders 22 and 24, the beads 74 of the material 75 are crushed by the disk 45 if the disk 45 is brought into contact with the holders 22 and 24. Therefore the disk 45 is protected by the beads 74 and never damaged. |
