Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-12-26

1988-05-17

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of quartz or glass

427 39, 427128, 427131, 428426, 428446, 428457, 428694, 428611, 428678, 428900, 428928, G11B 5704

Patent

active

047450312

ABSTRACT:
In a magnetic recording medium of the hard disk type comprising a rigid substrate and a magnetic layer formed thereon, the substrate is plasma treated at frequencies in the range of 10 to 200 kHz in an inorganic gas containing O; N and H; and N, H and O.

REFERENCES:
patent: 4250225 (1981-02-01), Shirahata
patent: 4419381 (1983-12-01), Yamazaki
patent: 4419404 (1983-12-01), Arai
patent: 4526806 (1985-07-01), Haque
patent: 4543268 (1985-09-01), Sidney
patent: 4548864 (1985-10-01), Nakayama
patent: 4551778 (1985-11-01), Arai
patent: 4565734 (1986-01-01), Arai
patent: 4575475 (1986-03-01), Nakayama
patent: 4582746 (1986-04-01), Shirahata
patent: 4594262 (1986-06-01), Kreil
patent: 4699847 (1987-10-01), Nakayama

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