Magnetic recording medium having improved running properties

Details Magnetic recording medium having improved running properties Magnetic recording medium having improved running properties

1984-04-13

1985-09-03

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

360134, 360135, 360136, 427128, 427131, 252 6254, 428336, 428694, 428695, 428900, G11B 570

Patent

active

045392579

ABSTRACT:
A magnetic recording medium comprised of a nonmagnetic support base having a magnetic layer provided thereon is disclosed. The magnetic layer includes ferromagnetic particles dispersed in a binder in combination with carbon black particles. The carbon black particles have an average primary particle size in the range of 30 m.mu. to 50 m.mu.. Further, the carbon black is capable of the adsorption of 120 ml or more of dibutyl phthalate per 100 g of carbon black. By utilizing the particular carbon black of the present invention it is possible to obtain a magnetic recording medium having improved running properties.

REFERENCES:
patent: 4091924 (1978-05-01), Newton
patent: 4132827 (1979-01-01), Mukaida
patent: 4275113 (1981-06-01), Saito
patent: 4337288 (1982-06-01), Takenaka
patent: 4415630 (1983-11-01), Kubota
patent: 4448842 (1984-05-01), Yamaguchi
patent: 4497864 (1985-02-01), Ryoke

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