Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1988-04-20

1989-09-12

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428329, 428900, G11B 564

Patent

active

048659240

ABSTRACT:
A magnetic recording medium comprises a nonmagnetic support, a first magnetic recording layer and a second magnetic recording layer, superposed in order, wherein each of binders contained in said first and second magnetic recording layers comprises a polymer, and the polymer contained in the second magnetic recording layer has a polymerization degree of not less than 250, said polymerization degree being more than that of the polymer contained in the first magnetic recording layer by at least as much as 20.

REFERENCES:
patent: 4246316 (1981-01-01), Aonuma
patent: 4265931 (1981-05-01), Tamai
patent: 4439795 (1984-03-01), Kitamoto
patent: 4511617 (1985-04-01), Hideyama

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