Magnetic disk having CSS area with concave and convex portions a

Details Magnetic disk having CSS area with concave and convex portions a Magnetic disk having CSS area with concave and convex portions a

1997-03-18

1999-07-27

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record medium

Disk

428694TR, G11B 572

Patent

active

059300914

ABSTRACT:
In order to provide a magnetic disk apparatus and a magnetic disk which is excellent in reliability and durability, and which enables high density recording, respectively, this invention provides a method for forming fine concave and convex portions (uneven area) on the magnetic disk by coating masking material particles only in the CSS area on the magnetic disk, etching the magnetic disk, and removing the masking material particles.

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