Magnetic recording medium and a method for manufacturing such me

Details Magnetic recording medium and a method for manufacturing such me Magnetic recording medium and a method for manufacturing such me

1993-11-02

1996-07-30

Kiliman, Leszek

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428694T, 428694TR, 428694ST, 428694SG, 428900, 427128, 427129, 360131, 360132, 360133, 360135, B32B 310, G11B 566, B05D 512

Patent

active

055409733

ABSTRACT:
A magnetic recording medium with improved friction and levitation characteristics and undiminished electromagnetic conversion characteristics, and a method for manufacturing such a medium, are disclosed. A magnetic recording disk substrate with Ni--P plated layers formed on both faces of an aluminum alloy substrate is given a texturing treatment using a grinding tape to form textures with a maximum cross angle within a range from 30.degree. to 50.degree., and then a slurry grinding treatment to remove irregular protrusions generated during the texturing process is applied using freely moving polycrystalline diamond abrasive grains with an average size of about 1 .mu.m or smaller.

REFERENCES:
patent: 5070425 (1991-12-01), Inumochi
patent: 5328740 (1994-07-01), Nakayama
patent: 5427833 (1995-06-01), Nakayama

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