Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1992-12-23
1994-07-12
Sluby, P. C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428143, 428323, 428481, 428482, 428483, 428694SL, 428694SG, 428900, 428910, 427131, G11B 564, G11B 5704, B32B 516
Patent
active
053287452
ABSTRACT:
There is provided a polyester film useful for production of a magnetic recording medium excellent in runnability, electromagnetic conversion characteristics and storage stability. In the polyester film, a continuous thin film which contains a resin as a matrix and acts as a primer layer for a magnetic layer is coated on one surface of a support film composed of a polyester. According to one embodiment thereof, the surface of the continuous thin film has (A) small protuberances each containing particles with an average particle size of less than 0.06 micrometer as a nucleus and having a height of 13 nm or less, (B) large protuberances each containing particles with an average particle size of 0.06 micrometer or more as a nucleus and having a height of 30 nm or less, and (C) micro-protuberances composed of a matrix resin alone, the numbers, per mm.sup.2 of the film, of these protuberances satisfying the formulas,
REFERENCES:
patent: 3787327 (1974-01-01), Emrick
patent: 4548855 (1985-10-01), Ono et al.
patent: 4624892 (1986-11-01), Ishizaki et al.
patent: 4670319 (1987-06-01), Katoh et al.
patent: 5047278 (1991-09-01), Ono et al.
patent: 5181020 (1993-01-01), Furukawa et al.
Kurihara Hideshi
Miura Sadayoshi
Nagai Tsuyoshi
Osawa Toshifumi
Satoh Masahito
Sluby P. C.
Teijin Limited
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