Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-09-15
2009-11-03
Evans, Jefferson (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125520, C360S125530
Reexamination Certificate
active
07612964
ABSTRACT:
A magnetic write head and method of manufacture thereof that has a first pole structure having a notched structure configured with a steep shoulder portion and a narrow vertical notch portion extending from the top of the steep shoulder portion. The write head also includes a second pole structure (P2) that has a very narrow width (track width) and that is self aligned with the narrow vertical notch structure of the first pole structure. The write head provides excellent magnetic properties including a very narrow track width and minimal side writing, while avoiding magnetic saturation of the poles.
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Bedell Daniel Wayne
Lam Hieu
Lee Kim Y.
Lo Jyh-Shuey
Evans Jefferson
Hitachi Global Storage Technologies - Netherlands B.V.
Zilka-Kotab, PC
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