Thin-film magnetic head having a recording head portion...

Details Thin-film magnetic head having a recording head portion... Thin-film magnetic head having a recording head portion...

2011-01-18

2011-01-18

Watko, Julie Anne (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125190

Reexamination Certificate

active

07872831

ABSTRACT:
The invention provides a thin-film magnetic head wherein the combined release angle Φ for a dominant recording magnetic field generated from a magnetic pole layer toward a patterned media for the purpose of recording magnetic information is set to within an angle range of 35° to 65° with respect to a patterned media surface. It is thus possible to invert, with efficiency and reliability, the directions of magnetization of isolate bits lined up on the patterned media for high-density recording.

REFERENCES:
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patent: 2004/0240110 (2004-12-01), Matono
patent: 2005/0041337 (2005-02-01), Yazawa et al.
patent: 2005/0068671 (2005-03-01), Hsu et al.
patent: 2005/0280938 (2005-12-01), Sasaki et al.
patent: 11-296845 (1990-10-01), None
patent: 2002-109712 (2002-04-01), None
patent: 2004-303302 (2004-10-01), None
patent: 2005-71429 (2005-03-01), None
patent: 2006-4604 (2006-01-01), None

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