MAGNETO-RESISTANCE EFFECT TYPE PLAYBACK HEAD

MAGNETO-RESISTANCE EFFECT TYPE PLAYBACK HEAD

PURPOSE:To decrease off-track noises by regulating the shape of a shielding layer in such a manner that the magnetic flux from a medium does not intersect with MR elements and electrodes, thereby suppressing the induced electromotive force between the MR elements and the electrodes. CONSTITUTION:The...

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Hauptverfasser: MORIWAKI HIDETOSHI, SHINODA YASUSHI, SHIIKI KAZUO, KOYAMA NAOKI, YUHITO ISAMU
Format: Patent
Sprache:eng
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator MORIWAKI HIDETOSHI
SHINODA YASUSHI
SHIIKI KAZUO
KOYAMA NAOKI
YUHITO ISAMU
description PURPOSE:To decrease off-track noises by regulating the shape of a shielding layer in such a manner that the magnetic flux from a medium does not intersect with MR elements and electrodes, thereby suppressing the induced electromotive force between the MR elements and the electrodes. CONSTITUTION:The sizes a1 and l1, a2 and l2 of magnetic layers 2 and 3 for shielding are regulated like a1
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CONSTITUTION:The sizes a1 and l1, a2 and l2 of magnetic layers 2 and 3 for shielding are regulated like a1&lt;h, a2&lt;=h, by which the area of the opposite surface of two sheets of the shielding layers 2, 3 is narrowed and the larger magnetic resistance than the magnetic resistance of a conventional structure is resulted. The magnetic flux to return in two sheets of the shielding layers 2, 3 is decreased by this effect. The magnetic flux from the adjacent bits is absorbed by the magnetic material layer 2 or 3 for shielding and does not arrive at the MR elements if the l1 and l2 are set longer than b (max. bit length of the magnetic medium). The induced electromotive force of the MR element parts is prevented by regulating the shape of the shielding layers in this way. Thus, the off-track noises are decreased.</abstract><oa>free_for_read</oa></addata></record>
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title MAGNETO-RESISTANCE EFFECT TYPE PLAYBACK HEAD
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