| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical information recording medium for reproducing high quality management information of a L1 layer in a double layer (L0 layer and L1 layer) optical information recording medium including organic dye material of Low to High characteristic. <P>SOLUTION: High quality reproducing characteristic of an emboss signal is obtained by irradiating, with a blue laser of direct current power, the emboss pit area of the L1 layer including the organic dye in which optical reflectance of recording mark part increases much more than the optical reflectance of the double layer optical information recording medium 100 before irradiation to lower the light absorption of the organic dye in advance, and making the optical reflectance of the exclusive reproducing area b1 of the L1 layer larger than the optical reflectance of a mirror part m of the same layer. <P>COPYRIGHT: (C)2007,JPO&INPIT |
