MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To provide adequate resilience and better mechanical strength, durability and runnability to a titled medium and to decrease powder dislodging by incorporating a urethane resin having a yield point in the prescribed layer provided on a base. CONSTITUTION:The layer contg. the urethane resin having the yield point as a binder resin is the BC layer 3 provided on the surface of the base 1 on the side opposite from a magnetic layer 2. The urethane resin having the yield point elongates extremely little even if said resin is stressed to the yield point and therefore the adequate hardness is provided to the base. The urethane resin does not break down and elongates with the stress beyond the yield point, thus said resin has the resilience and binding force as the binder resin. The mechanical strength of the magnetic recording medium is thus improved and the scratch owing to friction, etc. and powder dislodging, etc. during sliding contact are considerably decreased. The runnability is improved as well.