HOW TO MATCH DIRECT OVERWRITE MAGNETO-OPTICAL DISKS WITH HIGH DENSITY RECORDING TECHNIQUES

When mark edge: recording with the technique of thermal interference uniforming (TIU) is applied to direct overwrite (DOW) magneto-optical (MO) disks, the disks should be matched with this recording technique. In other words, the laser power recording condition should satisfy both the TIU condition and the DOW condition simultaneously. In order to examine the disk and drive matching, we have measured the temperature dependence of the recording properties of DOW-MO disk, for instance the recording laser power. When mismatched, either the disk or the drive should be retuned. The disk thermal properties may be changed for retuning. In the drive the laser power of the writing waveform may be changed for retuning. As a result of efficient matching, we report that a DOW-MO disk is matched well with the drive using TIU.