Glass substrate and thermal-assisted magnetic recording disk

Details Glass substrate and thermal-assisted magnetic recording disk Glass substrate and thermal-assisted magnetic recording disk

2011-07-05

2011-07-05

Bernatz, Kevin M. (Department: 1785)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S826000, C428S848000, C428S846900, C360S059000

Reexamination Certificate

active

07972715

ABSTRACT:
A plurality of recording magnetization portions is arranged in a concentric manner around a center of a glass substrate. A plurality of non-magnetization portion having a thermal conductivity lower than that of the recording magnetization portions is formed each between adjacent recording magnetization portions along a circumferential direction on a main surface of the glass substrate. A mean squared roughness of a surface of an area where each of the non-magnetization portions is formed is equal to or smaller than 1 nanometer.

REFERENCES:
patent: 7548398 (2009-06-01), Kamimura et al.
patent: 2002/0197437 (2002-12-01), Hashimoto et al.
patent: 2003/0113512 (2003-06-01), Watanabe et al.
patent: 2003/0194583 (2003-10-01), Miyamoto
patent: 2003/0211362 (2003-11-01), Ohno
patent: 2003/0211365 (2003-11-01), Hagan et al.
patent: 2004/0219353 (2004-11-01), Harasawa et al.
patent: 2005/0153104 (2005-07-01), Gillis et al.
patent: 2005/0202287 (2005-09-01), Lu et al.
patent: 2005/0214583 (2005-09-01), Ito et al.
patent: 2005/0223744 (2005-10-01), Horisaka et al.
patent: 2006/0292400 (2006-12-01), Suwa et al.
patent: 2007/0109678 (2007-05-01), Kamimura et al.
patent: 2008/0049359 (2008-02-01), Tsuchiyama et al.
patent: 2008/0090104 (2008-04-01), Sonobe et al.
patent: 2000-200414 (2000-07-01), None
patent: 2007-134004 (2007-05-01), None

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