| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optically recording medium, especially an optically recording medium capable of recording and regenerating with a blue laser beam which is a visible laser beam, to provide a new indole derivative, and to provide the optically recording medium which uses the indole derivative and can well record and regenerate with a laser beam having a wavelength of 300 to 900 nm. <P>SOLUTION: This optically recording medium contains one or more 2-(3H-indol-yl)-1,3-dione derivatives in at least one recording layers. <P>COPYRIGHT: (C)2007,JPO&INPIT |
