Magnetic record member

Details Magnetic record member Magnetic record member

1978-07-13

1979-07-24

Steiner, Arthur J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

427131, 427132, 428652, 428928, B32B 1500

Patent

active

041623509

ABSTRACT:
The thin film magnetic medium of a magnetic disc, and the read/record head employed with the disc are both protected from abusive use and physical damage as well as chemical damage (including damage due to heat and/or humidity) by a polysilicate layer, formed upon the magnetic medium. Inexpensive methods of forming the protective film (which methods lend themselves to mass production) are described. These methods are a small fraction of the cost of present day techniques.

REFERENCES:
patent: 3476595 (1969-11-01), Nacci
patent: 3677843 (1970-02-01), Reiss
patent: 3993846 (1976-11-01), Higuchi et al.
patent: 4005242 (1977-01-01), Kopke et al.
patent: 4069360 (1978-01-01), Yanagisawa et al.
IBM Tech. Disc. Bull., vol. 15, No. 11 (3304) 4/73.

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