Patent ID: 7092210
Filing Date: 2006-08-15
Classification: G11B

Abstract:
1. A magnetic recording and reproduction method comprising recording or reproducing a track of a rotating flexible magnetic disk by means of a magnetic head, wherein the flexible magnetic disk comprises a support and a magnetic layer containing ferromagnetic powder and a binder; the track has a breadth of 2 μm or less; and a frictional force between the magnetic layer and the magnetic head at innermost peripheral area of a recording region of the flexible magnetic disk is 30 mN or less, a frictional force between the magnetic layer and the magnetic head at outermost peripheral area of a recording region of the flexible magnetic disk is 20 mN or less, and a ratio of the frictional force at the innermost peripheral area to the frictional force at the outermost peripheral area is from 1.3 to 4.0.