Multiple gap magnetic reading head

Details Multiple gap magnetic reading head Multiple gap magnetic reading head

1985-04-03

1987-05-26

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360121, G11B 525

Patent

active

046690158

ABSTRACT:
A magnetic transducing head (1), for scanning a magnetic recording medium (14) which comprises a magnetizable surface (16) for retaining information in the form of a previously determined information pattern which is characterized by a restricted wavelength band, has a transducing gap (10) which is filled by a spacer consisting of a number (.gtoreq.4) of layers (11) of a material of low magnetic permeability extending parallel to the core faces (6, 7) and forming sub-gaps, a layer (12) of higher permeability being interposed between every two successive layers (11) of low permeability. As a result of this the head (1) has a very high efficiency, while by adjusting in particular the spacings between the sub-gaps the head (1) can be given a desired band filter action.

REFERENCES:
patent: 2673896 (1954-03-01), Rettinger
patent: 3098126 (1963-07-01), Kaspaul
patent: 3143603 (1964-08-01), Widener
patent: 3485962 (1969-12-01), Barnes
patent: 3519763 (1970-07-01), Lode

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