Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1999-11-03

2000-11-07

Kiliman, Leszek

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428328, 428329, 428331, 428336, 428694B, 428694BB, 428694BN, 428694BS, 428900, G11B 566

Patent

active

061434035

ABSTRACT:
A magnetic recording medium is disclosed, comprising a non-magnetic support having provided thereon at least a lower non-magnetic layer comprising a binder having dispersed therein a non-magnetic powder and an upper magnetic layer comprising a binder having dispersed therein a ferromagnetic powder which has been coated on said lower non-magnetic layer while the lower non-magnetic layer is wet, wherein the upper magnetic layer has an average dry thickness (d) of not more than 1.0 .mu.m and an average thickness variation (.sup..DELTA. d) at the interface between the upper magnetic layer and lower non-magnetic layer is not more than d/2. The magnetic recording medium exhibits excellent electromagnetic characteristics, running properties, and durability.

REFERENCES:
patent: 4567063 (1986-01-01), Miyoshi et al.
patent: 4578311 (1986-03-01), Ishikuro et al.
patent: 4598014 (1986-07-01), Miyoshi et al.
patent: 4663217 (1987-05-01), Yamaguchi et al.
patent: 4686139 (1987-08-01), Ryoke et al.
patent: 4693929 (1987-09-01), Ryoke et al.
patent: 4745017 (1988-05-01), Miyoshi et al.

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