Method for manufacturing a magnetic recording medium

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

2007-07-24

2007-07-24

Olsen, Allen (Department: 1763)

Etching a substrate: processes

Forming or treating article containing magnetically...

C216S038000, C216S066000, C216S072000

Reexamination Certificate

active

11050769

ABSTRACT:
A method for manufacturing a magnetic recording medium is provided, which can efficiently manufacture a magnetic recording medium that includes a recording layer formed in a concavo-convex pattern, has a sufficiently flat surface, and provides good recording and reproduction precision. The method includes: a non-magnetic material filling step of depositing a non-magnetic material over a recording layer formed in a predetermined concavo-convex pattern over a substrate, thereby filling a concave portion of the concavo-convex pattern with the non-magnetic material; and a flattening step of removing the excess part of the non-magnetic material above the recording layer by ion beam etching to flatten the surfaces of the non-magnetic layer and the recording layer.

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