Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2004-03-11
2008-10-14
Rickman, Holly (Department: 1794)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
Reexamination Certificate
active
07435489
ABSTRACT:
A magnetic recording medium is provided with an exchange layer structure, and a magnetic layer provided on the exchange layer structure. The exchange layer structure includes a ferromagnetic layer and a nonmagnetic coupling layer provided on the ferromagnetic layer, where the ferromagnetic layer and the magnetic layer are exchange-coupled and having mutually antiparallel magnetizations. The ferromagnetic layer and the magnetic layer satisfy a relationship Hc1′≧Hc2′, where Hc1′ denotes a dynamic coercivity of the ferromagnetic layer and Hc2′ denotes a dynamic coercivity of the magnetic layer.
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Okamoto Iwao
Umeda Hisashi
Fujitsu Limited
Greer Burns & Crain Ltd.
Rickman Holly
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