Magnetic recording medium

Stock material or miscellaneous articles – Structurally defined web or sheet – Edge feature

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Details

360134, 427128, 427131, 428219, 428340, 428694, 428695, 428900, G11B 572

Patent

active

045527997

ABSTRACT:
A magnetic recording medium comprised of a non-magnetic support base having provided thereon a magnetic recording layer is disclosed. The medium also has position thereon a compound selected from the group consisting of carboxylic acids and carboxylic acid derivatives, the compound being present on an edge portion of the medium. The medium also includes an additional lubricant on the middle part of the medium, the additional lubricant being selected from the group consisting of alphatic acid esters, alphatic acids, silicons and phosphoric acid esters. By utilizing two different types of lubricants on different portions of the medium it is possible to obtain improved lubricating properties and thus improve runnability with respect to the operation of the magnetic recording medium.

REFERENCES:
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patent: 3042639 (1962-07-01), Adams
patent: 3347362 (1967-10-01), Rabuse
patent: 3387993 (1968-06-01), Flowers
patent: 3470021 (1969-09-01), Hendricx
patent: 3476596 (1969-11-01), Carroll
patent: 3625760 (1971-12-01), Slovinsky
patent: 3634253 (1972-01-01), Akashi
patent: 3833412 (1974-09-01), Akashi
patent: 4135031 (1979-01-01), Akoshi
patent: 4322474 (1982-03-01), Matsuura
patent: 4361621 (1982-11-01), Isobe
patent: 4407853 (1982-04-01), Okita

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