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

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3372

Lastpage

3374

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42305

Filename

42305