Stock material or miscellaneous articles – Structurally defined web or sheet – Edge feature
Patent
1984-04-23
1985-11-12
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Edge feature
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.
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Fujiyama Masaaki
Iida Shinobu
Ryoke Katsumi
Tadokoro Eiichi
Fuji Photo Film Co. , Ltd.
Robinson Ellis P.
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