A magnetic medium (25) comprising a substrate (14) formed with predetermined patterns, and magnetized magnetic substances (21) arranged in said substrate (14) in accordance with said predetermined patterns. A method of manufacturing a magnetic medium (25) with magnetised magnetic substances (21) arranged according to predetermined patterns, comprising the steps of arranging said magnetic substances (21) in a substrate (11) in accordance with said predetermined patterns, and magnetizing said magnetic substances (21). <IMAGE>
