| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multilayer optical recording medium whose manufacturing method is relatively easy, and in which a reflectance change having good responsiveness is obtained and an intermediate reflective layer having a large reflectance changing width is provided, a multilayer optical recording medium with which multiple recording/reproducing can be performed with a single optical head, and its driving device. <P>SOLUTION: In the multilayer optical recording medium of a reproducing only type, a WORM (write once read many) type, and a rewritable type in which an information recording layer is laminated in a thickness direction, the material of the intermediate reflective layer is constituted of a material which is reversibly changeable between transparent and nontransparent states, and the driving device for this multilayer optical recording medium is provided. <P>COPYRIGHT: (C)2004,JPO |
