Method for manufacturing magnetic recording medium

Details Method for manufacturing magnetic recording medium Method for manufacturing magnetic recording medium

2007-06-05

2007-06-05

Kim, Paul D. (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603130, C029S603150, C029S603180, C360S077080, C360S135000, C427S127000, C427S128000

Reexamination Certificate

active

10972325

ABSTRACT:
A method for manufacturing a magnetic recording medium that has a sufficiently flat surface and includes a recording layer having a concavo-convex pattern that provides favorable accuracy of recording and reproduction. The manufacturing method includes the steps of: forming a lower non-magnetic film over a recording layer having a concavo-convex pattern; and forming an upper non-magnetic film on the lower non-magnetic film to fill concave portions34of the concavo-convex pattern. A bias power is applied to an object to be processed at least in the step of forming the upper non-magnetic film, and no bias power or a smaller bias power than the bias power applied in the step of forming the upper non-magnetic film is applied in the formation of the lower non-magnetic film.

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