Title :
Flexible magnetic disk image file system using perpendicular magnetic recording
Author :
Nakamura, Yoshihisa ; Yamamoto, Setsuo ; Sakata, Hiromi ; Iwasaki, Shun-ichi
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
9/1/1989 12:00:00 AM
Abstract :
The feasibility of applying perpendicular magnetic recording to a large-capacity image file system has been investigated experimentally. It is predicted that an areal density of 3.3 μm2/bit will be achieved for practical use at 100 kFRPI and 1950 TPI by introducing a sensitive single-pole perpendicular head with an Fe-Si/SiO2 multilayered main-pole film and a durable Co-Cr/Ni-Fe medium with high squareness. Guardbandless digital recording of still pictures was carried out using a flexible disk medium for which a durability over 10 million passes was ensured. It was confirmed that image data of 10 Mbytes can be recorded on one side of a 3.5-in. disk with bit error rate less than 1-10-5
Keywords :
floppy discs; magnetic recording; 10 MBytes; 3.5 in; CoCr-NiFe; FeSi-SiO2 multilayered main pole film; flexible magnetic disc image file system; guardbandless digital recording; image data; perpendicular magnetic recording; single-pole perpendicular head; Digital magnetic recording; Digital recording; Disk recording; File systems; Magnetic films; Magnetic heads; Magnetic materials; Magnetic recording; Perpendicular magnetic recording; Sputtering;
Journal_Title :
Magnetics, IEEE Transactions on
