Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2006-05-09
2006-05-09
Cao, Allen (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07042682
ABSTRACT:
Conventional perpendicular writers that utilize an extended return pole are subject to large flux leakage. This problem has been reduced in the prior art by adding a downstream shield. This still leaves significant upstream leakage. This has now been eliminated by adding an upstream shield and then connecting the up and downstream shields by using side shields. The latter need not extend all the way from the downstream to the upstream shield in which case their thickness is increased relative to the full side shields.
REFERENCES:
patent: 4547824 (1985-10-01), Best et al.
patent: 4656546 (1987-04-01), Mallory
patent: 4881143 (1989-11-01), Bhattacharyya et al.
patent: 4935832 (1990-06-01), Das et al.
patent: 5003423 (1991-03-01), Imamura et al.
patent: 5075956 (1991-12-01), Das
patent: 5311387 (1994-05-01), Mallary
patent: 5515221 (1996-05-01), Gill et al.
patent: 5621592 (1997-04-01), Gill et al.
patent: 6842313 (2005-01-01), Mallary
patent: 2002/0071208 (2002-06-01), Batra et al.
patent: 2002/0176214 (2002-11-01), Shukh et al.
patent: 2004/0100737 (2004-05-01), Nakamoto et al.
patent: 2004/0212923 (2004-10-01), Taguchi
patent: 2005/0068669 (2005-03-01), Hsu et al.
patent: 2005/0068671 (2005-03-01), Hsu et al.
patent: 2005/0068678 (2005-03-01), Hsu et al.
patent: 2005/0141142 (2005-06-01), Mochizuki et al.
Guan Liji
Hu Hung Liang
Ju Kochan
Tang Yaw Shing
Ackerman Stephen B.
Cao Allen
Headway Technologies Inc.
Saile George O.
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