| 摘要 |
PURPOSE:To improve the rate of erasure and jitter characteristics by forming a laminated body consisting of at least a transparent substrate, a 1st dielectric layer, a recording layer, a 2nd dielectric layer, a high refractive index layer and a light absorbing layer. CONSTITUTION:In this optical recording medium, the quantity of light absorbed in the recording layer in an amorphous state is reduced and can be made equal to or larger than that in a crystalline state by newly disposing a laminated part consisting of a high refractive index layer and a light absorbing layer in place of the conventional reflecting layer. As a result, difference in temp. rise at the time of recording is reduced, the deformation of recording marks and a shift of formation positions can be suppressed and erasing characteristics and jitter characteristics can be imporved. Even after recording and erasure are repeated many times, action is stable and the deterioration of the characteristics and the occurrence of defects are hardly caused. |
