Patent ID: 6747822
Filing Date: 2004-06-08
Classification: G11B

Abstract:
A method of magnetic transfer for a perpendicular magnetic recording medium comprising the steps of:initializing said magnetic recording medium by applying a magnetic field to said magnetic recording medium in a direction perpendicular to a surface of said magnetic recording medium so that a direction of magnetization of the surface of said magnetic recording medium is aligned in one direction, perpendicular to said magnetic recording medium; and magnetically transferring preformat information to a magnetic recording layer of said magnetic recording medium by applying an external magnetic field in a direction parallel to the surface of said magnetic recording medium to said magnetic recording medium and a master disk positioned in close contact with or in proximity to one surface of said magnetic recording medium; wherein said master disk has a non-magnetic substrate and a plurality of isolated linear regions composed of soft magnetic material on a surface of or in a surface portion of said non-magnetic substrate; said soft magnetic material having a pattern corresponding to said preformat information and being disclosed in the linear regions.