Flexible magnetic disk sheet

Details Flexible magnetic disk sheet Flexible magnetic disk sheet

1984-07-23

1986-03-25

Robinson, Ellis P.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

360135, 427 44, 427 541, 427128, 427131, 428 64, 428336, 428137, 428195, 4284259, 428480, 428694, 428695, 428900, G11B 572

Patent

active

045782997

ABSTRACT:
A flexible magnetic disk sheet is described, including a central circular hole therein, having a protecting layer formed thereon using (a) a compound including one or more atomic group providing lubricity at at least one end of a main chain or a side chain of molecular of the compound and one or more ester bonds of acrylic acid or methacrylic acid at at least one end of a main chain or a side chain of molecule of the compound, and (b) an aromatic ketone, wherein said protective layer is formed on a surface portion surrounding the edge of the central circular hole of a flexible magnetic disk sheet.

REFERENCES:
patent: 3466156 (1969-09-01), Peters
patent: 3681225 (1972-08-01), Genma
patent: 4239828 (1980-12-01), Knope
patent: 4335183 (1982-06-01), Hosaka
patent: 4368239 (1983-01-01), Nakajima
patent: 4387114 (1983-06-01), Conner
patent: 4404247 (1983-09-01), Dominguez-Burguette
patent: 4434210 (1984-02-01), Nakajima

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