Dynamic magnetic information storage or retrieval – Record medium – Disk
Patent
1988-03-31
1990-07-03
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record medium
Disk
G11B 582
Patent
active
049396145
ABSTRACT:
A magnetic disk medium in which texture working is performed on surfaces of a substrate or on surfaces of subbing films provided on the substrate to attain circumferential worked-traces so that the contact start stop area thereof is different from the recording/reproducing area thereof in roughness of the worked surfaces.
REFERENCES:
patent: 4419701 (1983-12-01), Harrison et al.
patent: 4488189 (1984-12-01), Axmear et al.
Arayashiki Masanori
Matsuoka Shinya
Ohura Masaki
Shirakura Takaaki
Yashiki Hiroshi
Hitachi , Ltd.
Wolff John H.
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