Patent ID: 6620532
Filing Date: 2003-09-16
Classification: G11B

Abstract:
A magnetic recording medium in which minimum magnetic reversal units with a nonmagnetic region intervening therebetween are arranged in a two-dimensional pattern to form substantially parallel recording tracks,a plurality of minimum magnetic reversal units are arranged at equal intervals in longitudinal and transverse directions of the recording tracks to construct a cluster, the clusters are arranged at equal intervals in the longitudinal and transverse directions of the recording tracks, each cluster has the same number of minimum magnetic reversal units arranged in the recording track longitudinal direction and the same number of minimum magnetic reversal units arranged in the recording track transverse direction, the center-to-center distance between two adjacent minimum magnetic reversal units in the recording track longitudinal direction is UL within the cluster and CL between adjacent clusters, satisfying CL/UL>1, and the center-to-center distance between two adjacent minimum magnetic reversal units in the recording track transverse direction is UW within the cluster and CW between adjacent clusters, satisfying CW/UW>1.