Magnetic recording medium having a magnetic layer containing a f

Details Magnetic recording medium having a magnetic layer containing a f Magnetic recording medium having a magnetic layer containing a f

1989-12-14

1992-06-02

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428402, 428694, 428695, 428900, 252 6254, G11B 500

Patent

active

051185652

ABSTRACT:
A magnetic recording medium comprises a non-magnetic substrate and a magnetic recording layer provided on said substrate, comprising (a) 100 parts by weight of magnetic powder, (b) 5 to 15 parts by weight of a mixture of a fatty acid ester and a fatty acid in their weigh ratio of 60/40 to 95/5 and (c) 5 to 15 parts by weight of carbon black having an average diameter of a single particle in the range of 0.1 to 2.0 microns. The magnetic power has been preferably treated on the surface with (1) a phosphate or an alkenyl or alkyl succinic acid and (2) an organosilane compound having a hydrolyzable alkoxysilane group in a molecule.

REFERENCES:
patent: 4501795 (1985-02-01), Takeuchi et al.
patent: 4539257 (1985-09-01), Ryoke et al.
patent: 4546038 (1985-10-01), Yamaguchi et al.
patent: 4803133 (1989-02-01), Hirota et al.
patent: 4818606 (1989-04-01), Koyama et al.
Kokai-No. 62-287 420 to TDK Corp., Patent Abstracts of Japan, vol. 12, No. 178, May 26, 1988.
Kokai-No. 60-280 026 to Fuji Shashin Film K.K., Patent Abstracts of Japan, vol. 9, No. 151, Jun. 26, 1985.
Kokai-No. 61-20 221 to Konishiroku Shashin Kogoy K.K., Patent Abstracts of Japan, vol. 10, No. 169, Jun. 14, 1986.

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