Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1974-10-21
1978-09-26
Pianalto, Bernard D.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428323, 428328, 428329, 428331, 428900, H01f 1006
Patent
active
041171900
ABSTRACT:
By incorporating 5 to 15 parts by weight of a finely divided powder having high hardness and a particle size of less than 10.mu. with 100 parts by weight of graphite powder with 20 to 50 parts by weight of a binder in a graphite layer of a magnetic recording medium which comprises a support, a magnetizable layer and a graphite layer provided on the opposite side of the support from the magnetizable layer, a reduction in the abrasion and the destruction of the graphite layer during running can be reduced.
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patent: 3423233 (1969-01-01), Akashi et al.
patent: 3617378 (1971-11-01), Beck
patent: 3622386 (1971-11-01), Larsen
patent: 3630910 (1971-12-01), Akashi et al.
patent: 3687725 (1972-08-01), Hartmann et al.
patent: 3833412 (1974-09-01), Akashi
patent: 3843404 (1974-10-01), Haefele et al.
Friedman et al., IBM Tech. Dis. Bull., p. 779, vol. 9, No. 7, Dec. 1966.
Akashi Goro
Fujiyama Masaaki
Suzuki Osamu
Fuji Photo Film Co. , Ltd.
Pianalto Bernard D.
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