| 摘要 |
A phase−modulation type optical recording medium comprising at least one layer of recording film(4)and at least one layer of metal film(3)on a recesses−formed substrate(1),wherein at least one layer of constituent film constituting the recording film consists of an organic matter that absorbs and breaks down a laser beam to have its refractive index changed,and the width of a recess(2)is 0.10μm−0.21μm,whereby providing a WORM type,high−density−recording optical recording medium capable of producing a high reproducing output. |
