Dustproof liner for a magnetic disc cartridge

Details Dustproof liner for a magnetic disc cartridge Dustproof liner for a magnetic disc cartridge

1986-05-27

1987-09-22

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

360128, G11B 2303

Patent

active

046959122

ABSTRACT:
A magnetic disc cartridge contains a pair of dust liners sandwiching the magnetic disc. Each liner has a double layer construction consisting of an outer layer and an inner layer. The outer layer is an unwoven cloth layer which has a high surface resistivity, which is electrostatically chargeable, and which attracts and absorbs dust particles, while the inner layer, which faces the disc, is apertured and is impregnated with a surface agent to produce a much lower surface resistivity to preclude a static charge, so that, during dynamic operation of the disc, the differential charge that exists in the inner/outer layers causes dust particles to pass through the apertured inner layer and become entrapped in the charged outer layer.

REFERENCES:
patent: 4223361 (1980-09-01), Zaitsu et al.
patent: 4251843 (1981-02-01), Masuyama et al.
patent: 4485421 (1984-11-01), Hoshino

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