Process for polishing the surfaces of magnetic storage disks

Details Process for polishing the surfaces of magnetic storage disks Process for polishing the surfaces of magnetic storage disks

1980-03-04

1985-12-10

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427128, H01F 1002

Patent

active

045579474

ABSTRACT:
A process for polishing the ground surfaces of magnetic storage disks which consist of a rigid substrate provided on both sides with a firmly adhering magnetic coating consisting of a magnetic material finely dispersed in an organic polymer and conventional additives, by pressing felt rings or felt disks against the moving magnetic storage disk, to the surface of which an aqueous emulsion containing butyl acetate with or without butane-1,4-diol is applied.

REFERENCES:
patent: 2913246 (1959-11-01), Hagopian
patent: 3398011 (1968-08-01), Neirotti et al.

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