Thin film magnetic head having multiple layered films...

Details Thin film magnetic head having multiple layered films... Thin film magnetic head having multiple layered films...

2005-05-24

2005-05-24

Heinz, A. J. (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Core

C029S603150

Reexamination Certificate

active

06898057

ABSTRACT:
The present invention is to provide a thin film magnetic head intended to increase precision of and to narrow a width which determines a track width of a write thin film magnetic head and to supply a stably high output substantially free from write blurring on a disk, and a method for manufacturing the same. The thin film magnetic head consisting of a magnetic circuit comprising a read head to read information, a lower magnetic film, a magnetic gap and an upper magnetic film formed with a magnetic gap between it and the lower magnetic film; and of a write head comprising a coil positioned between the upper magnetic film and the lower magnetic film and an insulating film for insulting the coil and the upper magnetic film from each other, wherein the upper magnetic film is configured of an upper first magnetic film, an upper second magnetic film and an upper third magnetic film, and the upper first magnetic film is connected to the upper third magnetic film via the upper second magnetic film.

REFERENCES:
patent: 6504677 (2003-01-01), Han et al.
patent: 6724572 (2004-04-01), Stoev et al.
patent: 6801407 (2004-10-01), Sasaki et al.
patent: 2002-8209 (2002-01-01), None

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