| 摘要 |
<P>PROBLEM TO BE SOLVED: To prerecord identification information while effectively utilizing a recording area, for example, in a multilayer information recording medium. <P>SOLUTION: This information recording medium is provided with a plurality of recording layers (L0 layer and L1 layer) for respectively recording a plurality of pieces of record information, and a first recording layer (L0 layer) located at the nearest side seen from a side at which laser beams are irradiated has an identification information recording area (NBCA(narrow barcode cutting area)) where identification information (for example, media ID) for identifying the information recording medium is prerecorded in advance. <P>COPYRIGHT: (C)2007,JPO&INPIT |
