| 摘要 |
PURPOSE: An optical recorded medium is provided to prevent causes of a degradation by controlling thermal conductivities of a recording layer, and by manufacturing various reflective protecting layers capable of controlling recording sensitivities. CONSTITUTION: An optical recorded medium comprises a polycarbonate substrate(1a), a dielectric layer(2a), a recording layer(3a), a reflective protecting layer(7), and a protecting layer(6a). The polycarbonate substrate has a width of 0.6 millimeter or 1.2 millimeter. The dielectric layer protects the polycarbonate substrate. The recording layer is formed on the dielectric layer. The reflective protecting layer is formed on the recording layer. The protecting layer is formed on the reflective protecting layer. The recording layer records or plays back required information. The reflective layer reduces layers of the optical recorded medium. The protecting layer protects disk loss caused by external dust. |
