198329 ⎘
Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups - or by different subgroups of group ; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording and a beam of light for reproducing, e.g. light-induced thermomagnetic recording, Kerr effect reproducing; Heads for reproducing
Sub-classes:Phase compensator for coupling an electromagnetic wave into an optical condenser
#2Electromagnetic field generating element, information recording/reproducing head and information recording/reproduction apparatus
#3Optical head and disk reproducing apparatus
#4Electromagnetic field generating element, information recording/reproducing head, and information recording/reproducing apparatus
#5Reproducing method of magneto-optical storage medium, and magneto-optical storage apparatus using the method
#6Magneto-optical recording medium and method of making the same and magneto-optical recording medium drive
#7Magneto-optical recording medium and magneto-optical recording device