| 摘要 |
PURPOSE:To provide a phase change optical recording medium having satisfactory recording, vanishing and repeating characteristics. CONSTITUTION:This phase change optical recording medium has a protective layer 2, an optical recording layer 3 contg. at least silver, a protective layer 4 and a heat radiating layer 5 on a substrate 1. Each of the protective layers 2, 4 consists of two layers, the protective layers 2-2, 4-2 adjacent to the optical recording layer 3 are made of AlN, Si3N4, SiC, etc., and the outer protective layers 2-1, 4-1 are made of ZnS or ZnS-SiO2. |
