| abstract |
(57) [Abstract] [Purpose] The object is to provide a magnetic recording medium having a good electromagnetic conversion characteristic such as an overwrite characteristic, and to provide a distortion-free reproduction signal suitable for digital recording and to prevent the magnetic layer from falling off. To provide a non-existent magnetic recording medium. A plurality of at least two layers, in which a lower non-magnetic layer containing at least non-magnetic powder and a binder and an upper magnetic layer containing at least ferromagnetic powder and a binder are provided on a non-magnetic support, In the magnetic recording medium having the above, the average value d of the thickness of the upper magnetic layer is larger than 0.01 μm and 0.3. is less than μm, and the standard deviation σ of the thickness of the upper magnetic layer is And the average value d of the thickness of the upper magnetic layer is 0.05 ≦ σ / d In a magnetic recording medium characterized by a relationship of ≦ 0.5, preferably, the longest diameter a of the non-magnetic powder contained in the upper magnetic layer and the average thickness d of the upper magnetic layer are: A magnetic recording medium having a relationship of 0.1 ≦ a / d ≦ 5 or less. |