Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1997-04-25

2000-02-01

Kiliman, Leszek

Coating processes

Magnetic base or coating

Magnetic coating

427129, 427130, 427131, 428141, 428323, 428336, 428694B, 428694BS, 428900, G11B 566

Patent

active

060200227

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 which has been coated on said lower non-magnetic layer while the lower non-magnetic layer is wet or in a dry state, wherein the coating solution for the lower non-magnetic layer having a thixotropic property and the lower non-magnetic layer containing either (a) an acicular inorganic powder having a Mohs hardness of 3 or more and a major axis length of 0.3 .mu.m or less or (b) a spherical inorganic powder other than carbon black having an average primary particle size of 0.08 .mu.m or less. The magnetic recording medium exhibits excellent electromagnetic characteristics, running properties, and durability.

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