198337 ⎘
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; Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position in view of the loading or unloading of the carrier
Concurrent modulation and frictional heating head disk contact detection
#2Information recording apparatus
#3Operating device, position-switching device, and magneto-optical recording/reproducing apparatus
#4Magnetic head device
#5Recorder/reproducer
#6Disc drive apparatus
#7Magneto-optical disc recording and/or reproducing device
#8System and method for detecting reader-writer offset in a heat-assisted magnetic recording head