Master for printing servo patterns

Details Master for printing servo patterns Master for printing servo patterns

2005-04-01

2009-11-17

Rickman, Holly (Department: 1794)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S830000

Reexamination Certificate

active

07618721

ABSTRACT:
A master is provided for use in a magnetic printing process. Illustratively, the master is used for printing servo patterns on a magnetic recording medium. The master includes a substrate on which a magnetic underlayer material is disposed. A second magnetic material is disposed over the magnetic underlayer material so as to form a plurality of teeth adapted for use in the magnetic printing process. The teeth may be formed in the second material by an additive or subtractive process. Further, the dimensions of the teeth may be selected to optimize use of the master in a magnetic printing process on perpendicular media.

REFERENCES:
patent: 5796533 (1998-08-01), Kitaori et al.
patent: 6347016 (2002-02-01), Ishida et al.
patent: 7028743 (2006-04-01), Wang et al.
patent: 7036209 (2006-05-01), Wago et al.
patent: 7097924 (2006-08-01), Haginoya et al.
patent: 2003/0113583 (2003-06-01), Nishikawa et al.
patent: WO 98/03972 (1998-01-01), None

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