Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1988-04-19
1989-12-12
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428329, 428336, 428408, 428694, 428900, G11B 570
Patent
active
048867039
ABSTRACT:
A magnetic recording medium comprising a support having provided on one surface thereof a magnetic layer comprising a binder and ferromagnetic particles dispersed therein, and on the opposite surface thereof a backing layer comprising a binder and non-magnetic particles dispersed therein, wherein at least one of the binders comprises a vinyl chloride copolymer resin having a vinyl chloride unit content of about 70 wt % or more based on the total amount of the binder, a nitrogen content of about from 0.01 to 1 wt % based on the total amount of the binder, and a polymerization degree of about from 250 to 700; and the non-magnetic particles comprises fine carbon particles having a DBP oil absorption of about 150 ml/100 g or more.
REFERENCES:
patent: 4132827 (1979-01-01), Mukaida
patent: 4551386 (1985-11-01), Yamaguchi
patent: 4562117 (1985-12-01), Kikukawa
patent: 4629646 (1986-12-01), Ide
patent: 4634633 (1987-01-01), Ninomiya
patent: 4734330 (1988-03-01), Oiyama
patent: 4743501 (1988-05-01), Eguchi
Hasumi Kazuo
Kosha Hideaki
Okita Tsutomu
Ryoke Katsumi
Watanabe Hideomi
Fuji Photo Film Co. , Ltd.
Thibodeau Paul J.
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