Magnetic recording/reproducing system comprising a glass substrate thin film magnetic disk and a flying magnetic head with defined spacing and surface roughness

摘要

A magnetic recording medium comprising a glass substrate and a magnetic thin film thereon is provided for use in a magnetic recording/reproducing system having a flying magnetic head. Floating performance is improved when the glass substrate has a surface roughness Rmax of 10-80 A and the magnetic thin film has a surface roughness Rmax of 50-150 ANGSTROM . Recording and reproducing information on a magnetic disk is carried out by driving the magnetic disk while keeping a magnetic head floating relative to the disk at a spacing therebetween of up to 0.2 mu m.