Magnetic recording medium

摘要

A magnetic recording medium is provided that includes a non-magnetic support and at least one magnetic layer provided on or above the non-magnetic support, the magnetic layer containing a ferromagnetic powder dispersed in a binder, the binder containing a polyurethane resin having a bridged hydrocarbon structure or a spiro structure, and the ferromagnetic powder containing an acicular ferromagnetic substance having a major axis length of 20 to 50 nm or a tabular ferromagnetic substance having a plate size of 10 to 50 nm. There is also provided the magnetic recording medium wherein it further includes a non-magnetic layer provided between the non-magnetic support and the magnetic layer, the non-magnetic layer containing a non-magnetic powder dispersed in a binder, and the binder of the non-magnetic layer containing a polyurethane resin having a bridged hydrocarbon structure or a spiro structure.