Flexible magnetic recording medium comprising an underlying film

Details Flexible magnetic recording medium comprising an underlying film Flexible magnetic recording medium comprising an underlying film

1985-03-12

1987-04-14

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of metal

360131, 428611, 428694, 428900, 428928, G11B 724

Patent

active

046578196

ABSTRACT:
In a flexible magnetic recording medium comprising first and second films (11) and (12) successively formed on a substrate (10), the first film comprises an alloy of nickel and iron together with a magnetization adjusting component. An amount of the magnetization adjusting component is adjusted so that the first film has saturation magnetization less than or equal to 500 e.m.u./cc. The magnetization adjusting component may be either molybdenum or a combination of molybdenum and copper. The magnetization adjusting component may be between 12 and 50% by weight in the first film. Alternatively, the magnetization adjusting component may be titanium or silicon. The alloy may be Permalloy. The substrate may be a polyester film.

REFERENCES:
patent: 4210946 (1980-07-01), Iwasaki et al.
patent: 4232071 (1980-11-01), Terada et al.
patent: 4277809 (1981-07-01), Fisher et al.
patent: 4351010 (1982-09-01), Argi
patent: 4410603 (1983-10-01), Yamamori et al.
patent: 4548682 (1985-10-01), Yoshida et al.
patent: 4576876 (1986-03-01), Shiiki et al.

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