Abstract
Magneto-Optical (MO) recording on ultra thin discs with 92 μm thickness succeeded. Key technologies are a nano-imprint for embossing on the thin disc and aerodynamic stabilizer (ADS) for stable disc rotation. The ADS made the thin disc rotation stable by providing an air cushion between the glass stabilizer and thin disc. The ADS was also available for the thin disc with a magnetic flying head. Using TbFeCo film, the thin disc had almost the same performance as that of a normal disc with 1.2 mm thickness. Stacked Volumetric Optical Discs (SVOD) can enhance the volumetric capacity with a lot of thin discs stored in a compact cartridge. Because the 40 nm mark length recording corresponds to the 100 GB/disc with CD size which has already succeeded in MO recording, the combination of MO recording and SVOD with 100 thin discs will enable the possibility to provide a 10 TB cartridge capacity.
