| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical recording medium wherein satisfactory recording and reproducing characteristics can be obtained for a high-speed recording use. <P>SOLUTION: In the two-layer type optical recording medium 100 wherein a disk substrate (inverted laminate 11) formed by layering a reflection layer (1) 102 and a recording layer (1) 103 on a substrate (1) 101 and a disk substrate (regular laminate 12) formed by successively layering a recording layer (2) 108 and a reflection layer (2) 107 on a substrate (2) 109 are stuck to one another across a transparent resin layer 105, when optical information is recorded on the recording layer (1) 103 of the inverted laminate 11, excess deformation extending to an adjacent track is suppressed, crosstalk is reduced and satisfactory recording and reproducing characteristics can be obtained for the high speed recording use by regulating the product (E×t) of the elastic modulus (E) at 25±5°C and the thickness (t) of the transparent resin layer 105 in the range of 2.0×10<SP>4</SP>to 30.0×10<SP>4</SP>MPa μm. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
