Dynamic magnetic information storage or retrieval – Head – Head surface structure
Reexamination Certificate
2006-03-07
2006-03-07
Heinz, A. J. (Department: 2653)
Dynamic magnetic information storage or retrieval
Head
Head surface structure
Reexamination Certificate
active
07009810
ABSTRACT:
A thin film magnetic recording head utilizing a timing based servo pattern is fabricated using a focused ion beam (FIB). The recording head is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern, preferably a timing based pattern, is defined on the thin film and the FIB cuts a gap through the thin film based on that pattern. Once completed, the recording head is used to write a servo track onto magnetic tape. The timing based servo track then allows for the precise alignment of data read heads based on the positional information obtained by a servo read head which scans the continuously variable servo track.
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Advanced Research Corporation
Dorsey & Whitney LLP
Heinz A. J.
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