| 摘要 |
PURPOSE:To hold a stable characteristic extending over a long period of time by forming at least a part of an auxiliary layer by a metallic plate which is made to adhere by an adhesive layer and an adhesive layer, in an optical recording element formed by laminating an optical recording layer and an auxiliary layer. CONSTITUTION:An optical magnetic material such as FeTbGd, etc. or an optical recording material such as tellurium oxide, etc. is made to form a film as a recording layer 22a on a substrate 21a consisting of glass, etc. by means of vapor-deposition, etc. Subsequently, an adhesive layer 23a is provided, and a metallic plate 24a is made to adhere in the final process. In this case, the adhesive layer 23a is provided for the purpose of prevention of oxidation of the recording layer and adherence with the metallic plate, and for instance, it consists of a hardening type adhesive agent, a hot melt adhesive agent, a tacky agent, etc. Also, the metallic plate 24a is a plate which has sufficient breaking strength itself, and especially a substance whose ductility is high, for instance, Al, phosphor bronze, Fe, etc. are desirable. Also, in case of a constitution which is provided with other auxiliary layer in conformity with a recording and reproducing device to be used, and covers both surfaces with a recording layer, a metal protecting layer to which a metallic plate is made to adhere can be applied. |
