| 摘要 |
PURPOSE:To prevent deterioration in an information signal by a change in the temp. in a drive and to improve the reliability of information recording and reproducing by constituting at least either of transparent substrates of a format forming part and supporting part. CONSTITUTION:The epoxy supporting part 1 and the preformat forming part 3 are integrated by a UV adhesive agent 2. The preformat forming part 3 is formed by injection molding of PMMA. A composite silicon nitride/aluminum nitride layer 4, a magneto-optical recording layer 5 consisting of TbFeCo, a UV adhesive agent 6 and an epoxy substrate 7 having a smooth surface are successively formed thereon. The optical recording medium which is sufficiently practically usable against the change in the atmosphere temp. in the drive and is inexpensive is thereby obtd. |
