Thin film magnetic head

Details Thin film magnetic head Thin film magnetic head

G - Physics

11

B

352/29.02, 352/2

G11B 5/60 (2006.01) G11B 5/31 (2006.01)

Patent

CA 1147855

THIN FILM MAGNETIC HEAD ABSTRACT A thin film magnetic transducer comprises a non- magnetic substrate and a pair of magnetic pole pieces having different widths. The width of the first pole piece deposited on the substrate is greater than that of the second pole piece to prevent a problem asso- ciated with misregistration between the pole pieces, which may occur during manufacture. Such misregis- tration generally results in a "wraparound", so that the edge of the second pole piece would have an ex- tended portion forming an angle to the normal magnetic transitions created by the pole pieces. The width of the second pole piece is slightly less than the ef- fective width of the data track recorded on a magnetic medium, and the data track width is relatively in- dependent of the dimension of the first pole piece. SA978024

339631

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