Analog recording process of metal in gap head

Author

Kobayashi, H. ; Kawata, K. ; Yamamoto, H. ; Suehiro, Y. ; Hyohno, T.

Author_Institution

Mitsubishi Electr. Corp., Hyogo, Japan

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4891

Lastpage

4893

Abstract

The characteristics of two kinds of MIG (metal-in-gap) heads for analog recording were investigated. One is a single sided (SS) MIG head, which has a high Bs metal film only at the trailing edge. The other is a double-sided MIG head, which has high Bs films at both gap edges. The reproduced voltages of both MIG heads and ferrite heads were measured using three kinds of particulate tapes and one kind of evaporated tape. It was found that the SS MIG head operates as a variable gap length head. In the reproducing process, the SS MIG head has a narrow gap and excellent characteristics at high frequency. In the recording process, the SS MIG head works as a wide effective gap and has a sharp magnetic field at the trailing edge. Results were confirmed by numerical analyses and experiments

Keywords

magnetic heads; magnetic recording; magnetic thin film devices; analog recording; double-sided head; evaporated tape; frequency response; metal in gap head; particulate tapes; sharp magnetic field; single-sided head; trailing edge; variable gap length head; wide effective gap; Ferrite films; Frequency; Magnetic cores; Magnetic fields; Magnetic films; Magnetic heads; Magnetic recording; Numerical analysis; Video recording; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278690

Filename

278690