Magnetic recording medium and magnetic recording/reproducing...

Details Magnetic recording medium and magnetic recording/reproducing... Magnetic recording medium and magnetic recording/reproducing...

2006-01-19

2009-06-02

Rickman, Holly (Department: 1794)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C360S131000

Reexamination Certificate

active

07541106

ABSTRACT:
A magnetic recording medium is provided that includes a recording layer having recording elements formed as convex portions and a filling material filled within the concave portions between the recording elements. The medium is highly reliable and has a surface less liable to damages when a magnetic head contacts the surface, so that good recording/reproducing characteristics are ensured. The magnetic recording medium includes a recording layer formed in a predetermined concavo-convex pattern over a substrate and having recording elements formed as convex portions in the concavo-convex pattern and a filling material filled within the concave portions between the recording elements. The filling material is substantially composed of Si and O, and the ratio of the number of O atoms to the number of Si atoms is equal to or more than 1.5 and less than 2.

REFERENCES:
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patent: A 2000-195042 (2000-07-01), None
patent: A-2004-164692 (2004-06-01), None

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