Magnetic recording medium having improved running time and corro

Details Magnetic recording medium having improved running time and corro Magnetic recording medium having improved running time and corro

1994-04-12

1996-02-27

Kiliman, L.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428336, 428408, 428447, 428694T, 428694TP, 428694TC, 428694TZ, 428694TF, 428695, 428704, 428900, B32B 516, B32B 900, B32B 904, G11B 566

Patent

active

054947421

ABSTRACT:
A magnetic recording medium comprising a non-magnetic substrate, a ferromagnetic metal film formed on said non-magnetic substrate, a carbon film which is formed on said ferromagnetic metal film and in which a concentration of at least one element selected from the group consisting of silicon, phosphorus, sulfur, tin and indium is or concentrations of boron and at least one element selected from the group consisting of tin and indium are decreased in a depth direction from the surface of said carbon film, and a lubricant layer formed on said carbon film, which medium has improved running durability and corrosion resistance.

REFERENCES:
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patent: 4713288 (1987-12-01), Kokaku et al.
patent: 4761334 (1988-08-01), Sagoi et al.
patent: 4840843 (1989-06-01), Sano
patent: 4840844 (1989-06-01), Futamoto et al.
patent: 4880687 (1989-11-01), Yokoyama
patent: 4900622 (1990-02-01), Nakayama
patent: 5068152 (1991-11-01), Maro et al.
patent: 5275850 (1994-01-01), Kitoh
Mitsubishi Denki KK, Abstract of JP-90-181811, "Magnetic Recording Medium . . . ", 1990.
Fuji Photo Film KK, Abstract of JP-88-296651, "Magnetic Recording Medium . . . ", 1988.

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