| 摘要 |
PURPOSE:To improve repeatability of a medium for overwriting by selecting one element from the group IVa and group VIa in the periodical table or one compd. of those elements for an adhesion layer of the optical recording layer. CONSTITUTION:On a transparent substrate, there are successively formed a lower protective layer 2, lower adhesion layer 3, optical recording layer 4, upper adhesion layer 5, upper protective layer 6, and UV curing resin layer 7. The adhesion layer consists of one element selected from the group IVa or group VIa in the periodical table or one compd. of these elements. By this constitution, deterioration of characteristics due to material transfer in the optical recording layer 4 can be prevented when overwriting is repeated, and thus, repeatability of the medium can be improved. |
