PRODUCTION OF MAGNETIC DISK

PRODUCTION OF MAGNETIC DISK

PURPOSE:To obtain a magnetic disk having high durability and reliability by forming a 1st SiO2 layer by a sputtering method on a magnetic recording medium, forming the 2nd SiO2 layer by a soln. coating method on the 1st SiO2 layer, thereby providing a coating layer on said medium. CONSTITUTION:The c...

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Hauptverfasser: KUROSAI KAYOKO, MORITA TOMOJI, UMEZAKI MITSUMASA
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator KUROSAI KAYOKO
MORITA TOMOJI
UMEZAKI MITSUMASA
description PURPOSE:To obtain a magnetic disk having high durability and reliability by forming a 1st SiO2 layer by a sputtering method on a magnetic recording medium, forming the 2nd SiO2 layer by a soln. coating method on the 1st SiO2 layer, thereby providing a coating layer on said medium. CONSTITUTION:The coating layer is provided on the magnetic recording medium by forming the 1st SiO2 layer by the sputtering method on the magnetic recording medium and forming the 2nd SiO2 layer by the soln. coating method on the 1st SiO2 in the case of providing the magnetic recording medium on a nonmagnetic base and providing the coating layer on said magnetic recording medium. Namely, the magnetic disk has the 1st SiO2 layer 5 formed on, for example, a thin gamma-Fe2O3 layer 3 by the sputtering method and the 2nd SiO2 layer 6 formed on the 1st SiO2 layer 5 by the soln. coating method. The coating layer formed in such a manner plays the role of protecting the magnetic recording medium. Faults arising from head crush are thereby decreased and the magnetic disk having high durability and reliability is obtd.
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CONSTITUTION:The coating layer is provided on the magnetic recording medium by forming the 1st SiO2 layer by the sputtering method on the magnetic recording medium and forming the 2nd SiO2 layer by the soln. coating method on the 1st SiO2 in the case of providing the magnetic recording medium on a nonmagnetic base and providing the coating layer on said magnetic recording medium. Namely, the magnetic disk has the 1st SiO2 layer 5 formed on, for example, a thin gamma-Fe2O3 layer 3 by the sputtering method and the 2nd SiO2 layer 6 formed on the 1st SiO2 layer 5 by the soln. coating method. The coating layer formed in such a manner plays the role of protecting the magnetic recording medium. 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CONSTITUTION:The coating layer is provided on the magnetic recording medium by forming the 1st SiO2 layer by the sputtering method on the magnetic recording medium and forming the 2nd SiO2 layer by the soln. coating method on the 1st SiO2 in the case of providing the magnetic recording medium on a nonmagnetic base and providing the coating layer on said magnetic recording medium. Namely, the magnetic disk has the 1st SiO2 layer 5 formed on, for example, a thin gamma-Fe2O3 layer 3 by the sputtering method and the 2nd SiO2 layer 6 formed on the 1st SiO2 layer 5 by the soln. coating method. The coating layer formed in such a manner plays the role of protecting the magnetic recording medium. 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CONSTITUTION:The coating layer is provided on the magnetic recording medium by forming the 1st SiO2 layer by the sputtering method on the magnetic recording medium and forming the 2nd SiO2 layer by the soln. coating method on the 1st SiO2 in the case of providing the magnetic recording medium on a nonmagnetic base and providing the coating layer on said magnetic recording medium. Namely, the magnetic disk has the 1st SiO2 layer 5 formed on, for example, a thin gamma-Fe2O3 layer 3 by the sputtering method and the 2nd SiO2 layer 6 formed on the 1st SiO2 layer 5 by the soln. coating method. The coating layer formed in such a manner plays the role of protecting the magnetic recording medium. Faults arising from head crush are thereby decreased and the magnetic disk having high durability and reliability is obtd.</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 PRODUCTION OF MAGNETIC DISK
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