Diskette having wear-resistant magnetizable layer

Details Diskette having wear-resistant magnetizable layer Diskette having wear-resistant magnetizable layer

G - Physics

11

B

352/30.01, 352/3

G11B 5/71 (2006.01) G11B 5/706 (2006.01) G11B 5/708 (2006.01)

Patent

CA 1241742

Abstract of the Disclosure Magnetizable layer of a diskette, as in the prior art, comprises acicular magnetizable particles and alpha-Fe2O3 particles dispersed in nonmagnetizable binder, The magnetizable layer of the novel diskette differs from prior diskettes in that the alpha-Fe2O3 particles are acicular and comprise from 2 to 7 weight percent of said layer. Preferably the alpha-Fe2O3 particles together with the other particles comprise from 69 to 73 percent by weight of the magnetizable layer. This allows the layer to be desirably smooth and also sufficiently porous to absorb a topical lubricant in an amount of at least 2 percent by weight of the layer. A preferred topical lubricant is a mixture of a long-chain fatty acid such as oleic acid and an ester of a long- chain fatty acid such as hexadecyl stearate.

489957

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