发明名称 MAGNETIC RECORDING MEDIUM
摘要 PURPOSE:To obtain a magnetic recording medium superior in electromagnetic characteristic and durability, by forming a resin coating film, which has recesses due to elution of needle-shaped inorganic matters, on a base and vapor-depositing a ferromagnetic metal onto this film from the oblique direction to form a magnetic film. CONSTITUTION:A resin coating film 2 which has recesses 3 due to elution of needle-shaped or flake-shaped inorganic matters is formed on a base 1, and a ferromagnetic metal or alloy is vapor-deposited in vacuum onto this film 2 from the oblique direction (for example, the direction of an angle alpha of incidence 70 deg.) to form a magnetic film 4. The magnetic film 4 has >=100Angstrom width in the recording direction and has >=3 partitions, which buffer the magnetic mutual function, within 10mu length. Iron oxide red, goethite, gamma-Fe2O3, or the like is used as said inorganic matters.
申请公布号 JPS57167125(A) 申请公布日期 1982.10.14
申请号 JP19810050775 申请日期 1981.04.03
申请人 HITACHI MAXELL KK 发明人 WAKAI KUNIO;OOIWA TSUNEMI;KITAGAMI OSAMU;NIIMI HIDEAKI
分类号 G11B5/66;G11B5/64;G11B5/738;G11B5/851 主分类号 G11B5/66
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