Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1982-03-09
1983-06-14
Pianalto, Bernard D.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428328, 428336, 428694, 428695, 428900, H01F 1002
Patent
active
043883605
ABSTRACT:
A magnetic recording medium is disclosed which is comprised of a nonmagnetic support base having a magnetic layer disposed on one surface. A back coating is disposed on the opposite surface of the support base in order to provide the magnetic recording medium with greater durability without increasing the coefficient of friction. The back coating is comprised of a binder having inorganic particles dispersed therein, the inorganic particles including SnO.sub.2 particles having an average size of about 0.01 to about 0.8.mu.. The back coating does not reduce the S/N ratio of the recording medium.
REFERENCES:
patent: 3687725 (1972-08-01), Hartmann et al.
Akashi Goro
Fujiyama Masaaki
Miyoshi Takahito
Okutu Toshimitu
Saida Takashi
Fuji Photo Film Company Limited
Pianalto Bernard D.
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