Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1990-12-27
1992-12-29
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360102, G11B 571
Patent
active
051756587
ABSTRACT:
A magnetic head slider having a protective coating on the rails thereof, the protective coating comprising a thin adhesion layer, a thin layer of amorphous hydrogenated carbon, and a thin masking layer. The protective coating is deposited on the air bearing surface of the slider after the thin film magnetic heads are lapped to a chosen dimension, but before the pattern of rails is produced on the air bearing surface. The protective coating protects the magnetic head during the rail fabrication process and in usage in a magnetic recording system protects the magnetic head from wear and corrosion damage.
REFERENCES:
patent: Re32464 (1987-07-01), Aine
patent: 3573768 (1971-04-01), Harris
patent: 4130847 (1978-12-01), Head et al.
patent: 4740853 (1988-04-01), Mukae et al.
"Sliders for Magnetic Heads of Surface-Hardened Silicon With Integrated Electronic Components", Kaus, et al. IBM Tech. Discl. Bulletin, vol. 25 No. 7A, Dec., 1982.
"Silicon Nitride Protection for Magnetic Heads", F. d'Heurle, et al., IBM Tech. Discl. Bulletin, vol. 19, No. 1, Jun., 1976.
Chang Henry C.
Chen Mao-Min
Horng Cheng T.
Schwenker Robert O.
International Buiness Machines Corporation
Murray Leslie G.
Schmid, Jr. Otto
Wolff John H.
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