PURPOSE: To efficiently obtain many sheets of the perpendicular magnetic recording medium which are small in size and have uniform magnetic characteristics by decreasing the handling and improving the efficiency of the film forming stage thereof at the time of forming soft magnetic films of a 1st layer on a non-magnetic substrate by an electroplating method relating to the process for production of the perpendicular magnetic recording medium having two- layered films to be used for a magnetic disk device.
CONSTITUTION: After the soft magnetic films 32 are formed on the surface of a nonmagnetic substrate 31 having the area of plural times the size of the recording medium to be formed, the nonmagnetic substrate 31 is cut and separated to a medium unit of a prescribed disk shape to form plural sheets of medium substrates 33. A stage for depositing and forming the perpendicular recording films on the soft magnetic films 32 of the respective medium substrates 33 separated in this stage is executed to form plural sheets of the perpendicular magnetic recording medium each having a two-layered film structure.
SHINOHARA MASAKI
ISHIDA SHOJI
SEKI KAZUYUKI
