| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical recording medium which is relatively inexpensive, excellent in optical property, and improved in signal quality and production efficiency and to provide its manufacturing method. <P>SOLUTION: The optical recording medium which is formed with a plurality of layers of sheet-shape substrates in which recording layers are formed. The above sheet-shape substrate is characterized by containing at least two layers wherein one layer consists of materials with high light transmissivity compared with the layer of another side, and the layer of another side consists of materials with low glass transition point compared with the above layer. <P>COPYRIGHT: (C)2008,JPO&INPIT |
