Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1985-09-20
1987-08-11
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428336, 428408, 428694, 428900, 427131, G11B 568, G11B 5708
Patent
active
046861394
ABSTRACT:
A magnetic recording medium is described, comprising a non-magnetic support having a magnetic layer and a backing layer which is provided on the surface of the support opposite to the magnetic layer, the backing layer containing (a) non-magnetic particles comprising carbon black having an average particle diameter of 0.1 to 1.0 .mu.m, (b) a binder comprising (i) a resin having 150 kg/cm.sup.2 or less of 100% modulus in an amount of at least 50 wt % based on the total amount of binder, and (ii) a diphenyl methane diisocyanate type hardening agent, with the amount of non-magnetic particles to total contained in the backing layer being 40 to 300 parts by weight of non-magnetic particles per 100 parts by weight of binder.
REFERENCES:
patent: 4439486 (1984-03-01), Yamada et al.
patent: 4525424 (1985-06-01), Bradshaw
patent: 4544601 (1985-10-01), Yamaguchi et al.
Hanai Kazuko
Kosha Hideaki
Ryoke Katsumi
Tadokoro Eiichi
Takahashi Masatoshi
Fuji Photo Film Co. , Ltd.
Thibodeau Paul J.
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