Composite magnetic head

Details Composite magnetic head Composite magnetic head

1989-10-10

1991-10-15

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Plural gaps

360125, G11B 5265

Patent

active

050579550

ABSTRACT:
A composite magnetic head having a recording/playback head and an erasing head combined in one unit through a nonmagnetic material is constructed such that at least one of two core halves constituting the erasing head adjacent to the recording and reproducing head is made of single crystal ferrite, a plane (100) of the single crystal ferrite is substantially parallel to a principal magnetic path-forming plane, and an angle .theta. between an orientation <100> existing in the plane (100) and an operating gap (magnetic gap)-forming plane is in the range of 10.degree.-40.degree. or 80.degree.-120.degree.. The composite magnetic head thus constructed can be made to have a reduced distance between magnetic gaps of both heads so as to be suited for being attached to the compact high-density recording and reproducing apparatus while eliminating crosstalk.

REFERENCES:
patent: 4246619 (1981-01-01), Hirai et al.
patent: 4316228 (1982-02-01), Fujiwara et al.
patent: 4439794 (1984-03-01), Shiroishi et al.
patent: 4571652 (1986-02-01), Fujiwara et al.
patent: 4604670 (1986-08-01), Visser
patent: 4731683 (1988-03-01), Otomo et al.
patent: 4939608 (1990-07-01), Okamura et al.
patent: 4941064 (1990-07-01), Tottori et al.

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