Super high density magnetic recording medium

Details Super high density magnetic recording medium Super high density magnetic recording medium

1982-08-30

1984-12-18

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

360134, 427128, 427132, 428141, 428145, 428149, 428152, 428201, 428447, 428450, 428457, 428480, 428481, 428483, 428694, 428900, H01F 1004, G11B 564, G11B 578

Patent

active

044891172

ABSTRACT:
A super high density magnetic recording medium is provided, which comprises a polyester film and a discontinuous film formed on at least one surface of the polyester film. The discontinuous film has a thickness of smaller than 500 angstroms and is composed mainly of a water-soluble polymer, a silane coupling agent, and if desired, a silicone resin. A high density magnetic recording medium is also provided, which comprises a ferromagnetic metal thin film formed on the discontinuous film layer of the polyester base film. The polyester base film is especially suitable for formation of a metallized video tape, and this tape is excellent in the slip characteristics and abrasion resistance and advantageous in that noises and drop-out are reduced.

REFERENCES:
patent: 4106948 (1978-08-01), Cooper
patent: 4233352 (1980-11-01), Ono
patent: 4367262 (1983-01-01), Vaughn

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