The gas components in thermoplastic norbornene resin pellets are suppressed
below certain levels by drying the resin under vacuum or under the
ordinary pressure and under vacuum. A substrate for magnetic recording
media is manufactured by injection-molding the resin dried by the method
according to the invention. The magnetic recording medium, employing the
substrate manufactured according to the invention, includes at least a
magnetic layer, a protection layer on the magnetic layer and a liquid
lubricant layer on the protection layer. The magnetic recording medium is
manufactured by forming these layers, one after another, on the substrate
according to the invention.
