Information recording disk and recorded information reproducing

Details Information recording disk and recorded information reproducing Information recording disk and recorded information reproducing

1993-05-24

1998-03-03

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 644, 428694R, 428694ML, 428694SC, 428694MT, 428694T, 428900, 428694TR, 428141, G11B 566

Patent

active

057231931

ABSTRACT:
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.

REFERENCES:
patent: 5008176 (1991-04-01), Kondo
patent: 5380573 (1995-01-01), Fukumoto
patent: 5419939 (1995-05-01), Arioka
patent: 5487926 (1996-01-01), Kuribayashi
patent: 5556681 (1996-09-01), Matsuzawa
patent: 5582896 (1996-12-01), Kuwamoto

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