Patent ID: 7151641

Claim:
A method of producing a perpendicular magnetic recording medium having recorded data, the method comprising: preparing a magnetic transfer master medium comprising a non-magnetic substrate having a surface containing protrusion portions and depression portions, a first magnetic layer formed on said protrusion portions for transferring data, a second magnetic layer formed on said depression portions, said first and second magnetic layers are magnetically linked and the ratio of the thickness of said first magnetic layer to a width of said first magnetic layer is within a range of 0.8 to 3; preparing a slave medium comprising a non-magnetic support having a perpendicular magnetic recording layer thereon; bringing said first magnetic layer of said master medium into direct contact with said perpendicular magnetic recording layer of said slave medium to form a conjoined body; and applying to said conjoined body a transfer magnetic field which is perpendicular to said first magnetic layer of master medium so that substantially all magnetic flux generated by said magnetic field passes through said first magnetic layer and said second magnetic layer in a same direction as that of said transfer magnetic field, thereby obtaining said perpendicular magnetic recording medium having said recorded data.