MAGNETIC RECORDING MEDIUM

A magnetic layer is formed on a non-magnetic substrate through a non-ferromagnetic layer. This non-ferromagnetic layer contains spherical, non-ferromagnetic fine granular iron oxide. Alternatively, it contains non-structural carbon having a mean grain size of 10 to 60 nm, a specific surface area of...

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Main Authors TAKASUGI, YASUFUMI, SAITOH, AKIRA, IKARASHI, TSUNEHIKO, MOTEGI, YUKO, AOYAMA, TSUTOMU, KUWAJIMA, TAKAYOSHI
Format Patent
LanguageEnglish
French
German
Published 20.11.1996
Edition5
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:A magnetic layer is formed on a non-magnetic substrate through a non-ferromagnetic layer. This non-ferromagnetic layer contains spherical, non-ferromagnetic fine granular iron oxide. Alternatively, it contains non-structural carbon having a mean grain size of 10 to 60 nm, a specific surface area of up to 150 cm /g by a BET method and a DBP oil absorption quantity of up to 100 ml/100 g in addition to, or in place of, this iron oxide. In this way, a magnetic recording medium having excellent surface property and electromagnetic conversion characteristics can be accomplished.
Bibliography:Application Number: EP19930921085