| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain preferable tracking characteristics, to improve positional accuracy of an information recording part and to obtain preferable reproduced signal characteristics of recorded information. <P>SOLUTION: An optical information recording medium 12 comprises a substrate 60, a reflecting layer 62 which is disposed on one principal face of the substrate 60 and reflects recording laser light 20, a selective reflecting layer 70 which is disposed on the reflecting layer 62 and transmits access controlling laser light 28 but reflects the recording laser light 20, a recording layer 74 disposed on the selective reflecting layer 70 and allows the recording laser light 20 to record information, and an antireflection layer 66 which is disposed on the recording layer 74. The substrate 60 has positional information formed by prepits 78 which modulate and reflect the access controlling laser light 28 entering through the selective reflecting layer 70. <P>COPYRIGHT: (C)2007,JPO&INPIT |
