Dynamic magnetic information storage or retrieval – Head – Gap spacer
Patent
1980-04-23
1982-11-09
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Head
Gap spacer
360123, G11B 525, G11B 520
Patent
active
043588069
ABSTRACT:
A number of blocks made of a high magnetic permeability material are arranged in parallel with a very fine pitch on a non-magnetic substrate. A number of pairs of electrodes are provided to interpose the blocks therebetween. The pairs of electrodes are electrically connected with each other. A magnetic recording layer is provided adjacent to the blocks so that a part thereof is magnetized when the block adjacent thereto is excited. A pair of metal styluses or the like are put into contact with the electrodes and an electric current modulated with information is caused to flow through the styluses to excite the block interposed therebetween and magnetize the magnetic recording layer adjacent thereto when recording information. When reproducing the recorded information, a pair of metal styluses are put into contact with the opposite ends of the block and an electric current is caused flow through the block. The recorded information is read in the form of variation in electric current flowing therethrough or voltage thereacross obtained as the styluses are moved with respect to the recording medium along the direction in which the blocks are arranged.
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Canney Vincent P.
Fuji Photo Film Co. , Ltd.
Razzano Pasquale A.
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