Process for manufacturing a magnetic record member

Details Process for manufacturing a magnetic record member Process for manufacturing a magnetic record member

1977-10-25

1979-05-15

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427131, 427132, 428900, H01F 1000

Patent

active

041548752

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: 4069360 (1978-01-01), Yanagisawa et al.

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