| 摘要 |
A wet-on-wet application process by means of an extrusion coater having at least two slot dies is described, the upper lip of the common outlet orifice of the slot dies being recessed relative to the lower lip and a right parallelepiped magnet whose upper edge is opposite the extruder orifice at a distance of, preferably, from 1 to 1.5 mm away being arranged on the other side of the nonmagnetic substrate and parallel to the latter, in which the uppermost layer contains magnetic pigments and has a layer thickness of more than 2.0 mu m while the lower layer is nonmagnetic, may contain a conductivity-increasing additive or nonmagnetic fillers and has a thickness of less than 0.5 mu m when dry. The magnetic recording medium has very good mechanical and electroacoustic properties, improved conductivity, very good adhesion, improved surface quality and a smaller number of dropouts.
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