Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1994-06-03
1995-12-26
Ahamd, Nasser
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
360135, 428163, 428164, 428409, 4284723, 428694TS, 428694TP, 428694TR, 428694SG, 428900, B05D 512, G11B 582
Patent
active
054786223
ABSTRACT:
A magnetic disk includes two kinds of texture lines formed on a substrate rendered to texturing, one kind being formed over the entire substrate and parallel with a circumference of the substrate and the other kind being formed such that a line tangent to the other texture intersects a line tangent to the one texture at an angle of 3 to 9 degrees. The other texture lines are yielded by processing the substrate with a polishing tape rocking the substrate radially thereof, and satisfying the floating characteristic of a magnetic head as being floated in a low degree, the contact-start-stop characteristic, and the attraction characteristic.
REFERENCES:
patent: 4973496 (1990-11-01), Kruger
patent: 5070425 (1991-12-01), Inumochi
patent: 5082709 (1992-01-01), Suzuki
patent: 5225955 (1993-07-01), Ito
Kodama Hirotsugu
Nakamura Kouichi
Noda Kyoji
Ahamd Nasser
Matsushita Electric - Industrial Co., Ltd.
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