PURPOSE: To obtain a magnetic recording medium being excellent in a reproducing characteristic by using magnetic powder which is platy and of which the axis of easy magnetization is within a platy face, as the magnetic powder of a magnetic layer.
CONSTITUTION: The magnetic recording medium has a magnetic layer provided on a nonmagnetic substrate. Magnetic powder of which the main constituent is hexagonal platy iron obtained from ferrous sulfate by oxidation-reduction and others, of which the axis of easy magnetization is within a platy face and of which the thickness is about 0.003 to 0.1μm, the diameter about 0.03 to 0.5μm and the platy ratio about 3 to 20, for instance, is used as the magnetic powder of the magnetic layer. By these means, the magnetic recording medium being excellent in a reproducing characteristic and having a high performance is obtained.
| JPS6134915 | MANUFACTURE OF IRON OXIDE MAGNETIC FILM |
YOSHIDA OSAMU
MIZUNOYA HIROHIDE
SHIGA AKIRA
