Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1981-03-23

1983-08-02

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428694, 428695, 428900, 428328, 75 05AA, 252 6255, 427132, 360134, B32B 702

Patent

active

043966683

ABSTRACT:
A magnetic recording medium obtained by coating a magnetic metallic powder with a binder on a non-magnetic substrate, wherein said magnetic metallic powder is mainly made of acicular particles obtained by a dry reduction process and said magnetic recording medium has a residual magnetic flux density of greater than 2,600 gauss, a coercive force of 1,300 to 1,800 Oe, a thickness of a magnetic layer of 1.5 to 3.5 .mu.m and a C/N ratio (carrier signal
oise level) in video band of greater than 4 dB of the C/N ratio of the standard video tape.

REFERENCES:
patent: 3925114 (1975-12-01), Takahashi et al.
patent: 4054530 (1977-10-01), Deffeyes
patent: 4069073 (1978-01-01), Tadokoro et al.
patent: 4091158 (1978-05-01), Kasuga et al.
patent: 4165232 (1979-08-01), Jaeckh et al.
patent: 4246316 (1981-01-01), Aonuma et al.
patent: 4273807 (1981-06-01), Berry
patent: 4295879 (1981-10-01), Steck et al.
patent: 4318757 (1982-03-01), Horimoto et al.

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