Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics
 In a magneto-optical recording apparatus, in which light spots are sequentially formed on a magneto-optical disk at the timing of a predetermined reference clock signal while a modulating magnetic field, which is reversed in polarity as a function of record data in synchronism with the reference clock signals, is applied to the disk for magnetically recording the record data thereon; the timing of polarity reversal of the modulating magnetic field with respect to the reference clock signal is delayed as a function of the magnetic and/or temperature characteristics of the magneto-optical disk to permit a magnetized domain to be formed at the correct position with respect to the timing of the reference clock signal. The intensity and/or duration of intermittent energizing of the light beam is controlled as a function of the ambient temperature of the magneto-optical disk and/or the radial sweeping position of the light spot to permit each magnetized domain to be formed at the correct position with respect to the timing of the reference clock signal. 
Sony Corporation
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Goro Tetsuji Tetsu
Fujita Kawashima Watanabe