Production process of perpendicular magnetic recording medium

Details Production process of perpendicular magnetic recording medium Production process of perpendicular magnetic recording medium

2006-03-16

2010-06-29

Chen, Bret (Department: 1792)

Coating processes

Direct application of electrical, magnetic, wave, or...

Plasma

C427S128000, C427S130000, C427S131000, C427S132000, C427S376600

Reexamination Certificate

active

07744966

ABSTRACT:
A production process of magnetic recording media is provided in which, when using an oxide magnetic material as a perpendicular magnetic recording layer and forming a carbon protective layer using a plasma CVD method, stripping of the carbon protective layer and separation of a lubrication layer can be prevented, and satisfactory recording and reproduction characteristics can be obtained. In the production process of magnetic recording media, the magnetic recording media consists of, at least, a substrate1on which are provided a perpendicular magnetic recording layer and a carbon protective layer, in which the perpendicular magnetic recording layer consists of magnetic material containing a Co alloy and oxide material; the method includes a perpendicular magnetic recording layer formation process of forming the perpendicular magnetic recording layer on the substrate1, a heating process of using a heating portion28to heat the substrate1on which the perpendicular magnetic recording layer has been formed, and a protective layer formation process of using a plasma CVD method to form a carbon protective layer on the substrate1on which the perpendicular magnetic recording layer has been formed.

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