Multichannel thin-film magnetic head with dummy shields

Details Multichannel thin-film magnetic head with dummy shields Multichannel thin-film magnetic head with dummy shields

2011-03-22

2011-03-22

Blouin, Mark (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

07911743

ABSTRACT:
Provided is a multichannel thin-film magnetic head having a plurality of read head elements neighboring with each other, each of which includes shield layers having a desired stable magnetic-domain structure. The head comprises at least one read head part comprising a plurality of read head elements aligned in the track width direction, wherein each of the plurality of read head elements comprises a lower shield layer and an upper shield layer, and the at least one read head part comprises: a lower shield part comprising a plurality of the lower shield layers aligned in the track width direction; and an upper shield part comprising a plurality of the upper shield layers aligned in the track width direction, and wherein dummy shield layers are provided respectively on both sides of at least the lower shield part.

REFERENCES:
patent: 7486476 (2009-02-01), Biskeborn
patent: 7548397 (2009-06-01), Biskeborn et al.
patent: 7773347 (2010-08-01), Maejima et al.
patent: A 09-016910 (1997-01-01), None

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