| 摘要 |
PURPOSE: A magnetic recording medium is provided to achieve improved electromagnetic properties in the entire recording wavelength range and to obtain good mechanical properties, while permitting the medium to be produced by a well-known technologies and avoiding the problem of head saturation. CONSTITUTION: A multilayer magnetic recording medium comprises, on a nonmagnetic substrate, at least one upper binder-containing magnetic recording layer which has a thickness of less than 0.5 mum and contains finely divided magnetic pigment having a coercive force Hc of 80-250 kA/m, and at least one lower binder-containing layer which contains an isotropic magnetically soft pigment which is selected from gamma-Fe2O3, Fe3O4 and a solid solution of these components, the coercive-force Hc of the lower layer being less than 4 kA/m and the anhysteretic susceptibility of the lower layer at 2 kA/m being greater than 7. |
