Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1983-06-17
1986-12-02
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
360131, 428694, 428900, G11B 572
Patent
active
046264698
ABSTRACT:
A magnetic recording material, which comprises a magnetic layer coated on a non-magnetic support is disclosed. The magnetic layer contains both carbon black fine powder having a mean primary grain size of less than 10 m.mu. and carbon black coarse powder having a mean primary grain size in the range of 50 to 120 m.mu. in a mixing ratio ranging from 95/5 to 5/95. The material is improved in both RF output and audio output.
REFERENCES:
patent: 3423233 (1969-01-01), Akashi et al.
patent: 4015042 (1977-03-01), Chassaigne
patent: 4135031 (1979-01-01), Akashi et al.
patent: 4320159 (1982-03-01), Ogawa et al.
Fujiyama Masaaki
Iida Shinobu
Masuyama Kenichi
Yamaguchi Nobutaka
Atkinson William M.
Fuji Photo Film Co. , Ltd.
Lesmes George F.
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