Flexible magnetic disk and process for preparing the same

Details Flexible magnetic disk and process for preparing the same Flexible magnetic disk and process for preparing the same

1993-04-13

1995-10-03

Kiliman, L.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428323, 428328, 428332, 428336, 428694B, 428694BS, 428694BN, 428694BM, 428694BA, 428694BR, 360 9901, 360135, B32B 302, B32B 516, G11B 566

Patent

active

054550939

ABSTRACT:
A flexible magnetic disk is disclosed, which comprises a non-magnetic support having thereon a non-magnetic layer comprising mainly a non-magnetic powder and a binder resin, and a magnetic layer comprising mainly a ferromagnetic layer and a binder resin, in this order, wherein at least a part of the non-magnetic powder in the non-magnetic layer is an electrically conductive powder, and therein the product Et.sup.3 of Young's modulus (E) of the flexible magnetic disk and the cube of the thickness (t) thereof is 50 to 210 g.multidot.mm. The magnetic layer preferably has a thickness of not more than 0.5 .mu.m and the ferromagnetic powder preferably is ferromagnetic metallic powder or ferromagnetic hexagonal ferrite powder.

REFERENCES:
patent: 4646179 (1987-02-01), Nagashima et al.
patent: 4693934 (1987-09-01), Nishimatsu et al.
patent: 4780366 (1988-10-01), Nishimatsu et al.

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