Magnetic recording medium and method for producing the same

Details Magnetic recording medium and method for producing the same Magnetic recording medium and method for producing the same

1993-11-10

1996-07-09

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428611, 428678, 428694TS, 428694TM, 428694TP, 428694TC, 428900, H01F 100, G11B 566, G11B 570

Patent

active

055343244

ABSTRACT:
A magnetic recording medium has a cobalt-based first magnetic layer and a cobalt-based second magnetic layer which are formed on a substrate of high polymer by vacuum evaporation. In order to have a high reproducing output and a high S/N ratio, the first magnetic layer has high oxygen density area which is arranged at a vicinity of the second magnetic layer, and the second magnetic layer has high oxygen density area which is arranged at a vicinity of the first magnetic layer.

REFERENCES:
patent: 4385098 (1983-05-01), Sugita et al.
patent: 4540600 (1985-09-01), Robayashi et al.
patent: 4770924 (1988-09-01), Takai et al.

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