Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2011-01-11
2011-01-11
Bernatz, Kevin M (Department: 1785)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C428S836200, C360S131000, C427S127000, C427S255190, C427S255290
Reexamination Certificate
active
07867638
ABSTRACT:
A magnetic-recording medium which is provided on a nonmagnetic substrate with at least an orientation-controlling layer for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate, and a protective layer. The perpendicularly magnetic layer includes two or more magnetic layers, at least one of the magnetic layers is a layer having Co as a main component and containing Pt as well and containing an oxide, and at least another of the magnetic layers is a layer having Co as a main component and containing Cr as well and containing no oxide.
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Iwasaki Takeshi
Kobayashi Kazuo
Maeda Tomoyuki
Nakamura Futoshi
Oikawa Soichi
Bernatz Kevin M
Kabushiki Kaisha Toshiba
Showa Denko K.K.
Sughrue & Mion, PLLC
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