Magnetic recording medium
AssigneeTDK Corporation
InventorsMasatoshi Nakayama, Haruyuki Morita, Yuichi Kubota, Keiko Tsuchiya
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Abstract
In a magnetic recording medium comprising a base film and a magnetic layer formed on the base film, the base film has been plasma treated in an atmosphere consisting essentially of an inorganic gas containing N, H, and optionally O at frequencies in the range of 10 to 200 kHz. A perpendicular magnetizable metal thin film layer can be deposited on the plasma-treated surface of a resin substrate having a heat distortion temperature of at least 150.degree. C. without disturbance on the crystal structure of the layer.
Claims11
A magnetic recording medium comprising:
- a base film which has been plasma treated at a frequency of 10 kHz to 200 kHz in an atmosphere consisting essentially of an inorganic gas containing N and H, and;
- a magnetic layer formed on said base film.
A magnetic recording medium comprising:
- a base film which has been plasma treated at a frequency of 10 kHz to 200 kHz in an atmosphere consisting essentially of an inorganic gas containing N, H and O, and;
- a magnetic layer formed on said base film.
A magnetic recording medium comprising:
- a substrate formed of a resin having a heat distortion temperature of at least 150.degree. C. which has been plasma treated at a frequency of 10 kHz to 200 kHz in an atmosphere consisting essentially of an inorganic gas containing N, H or O, or mixtures thereof, and;
- a magnetic layer formed on said substrate.
Dependencies are inferred from the claim text.