Process for the preparation of magnetic recording medium

Details Process for the preparation of magnetic recording medium Process for the preparation of magnetic recording medium

1987-10-14

1989-12-19

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427131, B05D 512

Patent

active

048882127

ABSTRACT:
A process for the preparation of a magnetic recording medium comprises the steps of subjecting a magnetic recording layer coated on a nonmagnetic support to surface smoothening treatment, the magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, and then grinding both a surface of the magnetic recording layer and a surface of a back layer provided on the support using a specific grinder. The specific grinder is a fixed blade, a diamond wheel or a rotatable blade. A rotatable blade-grinder preferably employable for the grinding procedure comprises a rotatable body having a circular section and one or more blades provided on the periphery of the body.

REFERENCES:
patent: 2688567 (1954-09-01), Franck

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