Process for preparing a magnetic recording medium

Details Process for preparing a magnetic recording medium Process for preparing a magnetic recording medium

Filed on

1986-02-25

Date issued

1987-06-16

Examiner

Pianalto, Bernard D.

Patent Class

Coating processes

SubClass

Electrical product produced

SubSubClass

Integrated circuit, printed circuit, or circuit board

Other Related Categories

427 541, 427129, 427130, H01F 1002

Type

Patent

Status

active

Patent number

046735909

Description

ABSTRACT:
A process for preparing a magnetic recording medium is disclosed, which comprises (1) subjecting a surface of a non-magnetic support having a surface roughness of not less than 0.01 .mu.m to an abrasion treatment or a calendering treatment, (2) coating a layer containing a compound polymerizable by radiation exposure on the surface of non-magnetic support, (3) exposing the layer to radiation to polymerize and harden the same, and (4) providing a magnetic layer on the radiation exposed layer. The thus prepared magnetic recording medium is not accompanied by dropout due to "fish eyes" and is suitable for high density recording.

REFERENCES:
patent: 4247580 (1981-01-01), Chao
patent: 4468412 (1984-08-01), Fujii et al.
patent: 4468436 (1984-08-01), Okita et al.

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