Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-05-10
2005-05-10
Tupper, Robert S. (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
06891697
ABSTRACT:
A magnetic head having at least a main pole having a profile on a magnetic head air bearing surface composed of a first portion having a length in a cross-track direction which continuously increases from a leading edge to a trailing edge, and a second portion located on the side of the trailing edge of the first portion. A length of the second portion in the cross-track direction at the trailing edge is substantially equal to a length in the cross-track direction at the point of contact between the first and second portions. A rate of change in the length of the second portion in the cross-track direction from the leading edge to the trailing edge is different from a rate of increase in the length of the first portion in the cross-track direction.
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patent: 6504675 (2003-01-01), Shukh et al.
patent: 6697221 (2004-02-01), Sato et al.
patent: 6710973 (2004-03-01), Okada et al.
patent: 6741421 (2004-05-01), Mochizuki et al.
patent: 2001-256605 (2001-09-01), None
patent: 2002-92821 (2002-03-01), None
“Drive Integration Challenges for Perpendicular Recording”, S. Lambert et al, Advanced Development Labs., Quantum Corp., Milpitas, CA, pp. 131-132, 2000.
Etoh Kimitoshi
Kawato Yoshiaki
Mochizuki Masafumi
Nakamura Atsushi
Nunokawa Isao
Antonelli Terry Stout & Kraus LLP
Hitachi , Ltd.
Tupper Robert S.
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