Magnetic head core with special gap structure

Details Magnetic head core with special gap structure Magnetic head core with special gap structure

1990-10-05

1991-08-27

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Gap spacer

G11B 523

Patent

active

050438425

ABSTRACT:
A magnetic head core including two ferrite blocks which are bonded together so as to form a magnetic path and which includes respective two protrusions protruding from the opposed surfaces thereof. The protrusions have opposed end faces cooperating with each other to define a magnetic gap therebetween. The opposed surfaces of the two ferrite blocks cooperate with the two protrusions, to define two cutouts formed on opposite sides of the magnetic gap, such that a spacing provided between the opposed surfaces by each cutout is larger than an amount of the magnetic gap. The cutouts define an effective width of a track of the head core in which the magnetic gap is open. Each protrusion has two side surfaces inclined at an angle of 25.degree.-75.degree. with respect to its end face. Each cutout is defined by at least one pair of opposed ridges which are formed on the opposed surfaces of the two ferrite blocks, respectively, such that each ridge is disposed on each side of a corresponding one of the two protrusions.

REFERENCES:
patent: 3798758 (1974-03-01), Stamers et al.
patent: 4837922 (1989-06-01), Torin et al.

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