SE371906

A magnetic recording head is provided with a pair of pole tips separated by a high-reluctance gap, and the pole tips are coupled together by a low-reluctance path. The head is further provided with a third pole tip. A magnetic medium, such as a tape, is passed over the head in such a manner that any...

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Bibliographic Details
Main Authors BANGE D,US, MIYATA J,US, DONOHUE J,US
Format Patent
LanguageEnglish
Published 02.12.1974
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:A magnetic recording head is provided with a pair of pole tips separated by a high-reluctance gap, and the pole tips are coupled together by a low-reluctance path. The head is further provided with a third pole tip. A magnetic medium, such as a tape, is passed over the head in such a manner that any point on the medium passes over the gap and thereafter over the third pole tip. A pair of coils are wound around the low-reluctance coupling path, one of which is used to cause a magnetic field to exist in the gap and thereby be applied to the medium, and the other of which is used to detect any change in the direction of the magnetic field on the medium as it passes in the vicinity of the third pole tip. Means are further provided to determine whether the signal provided by the detecting coil corresponds to an expected signal.
Bibliography:Application Number: SE19710004843