摘要 |
An object of this invention is to provide an information recording disk which allows a higher information recording density as compared with that of a conventional disk and a recorded information reproducing apparatus for reproducing information recorded therein. On the information recording disk, plurality of pits corresponding to information are formed, and furthermore a magnetic thin film is formed from soft magnetic material such as pure iron, silicon steel, permalloy, or Mn-Zn ferrite and so on.
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