| 摘要 |
<p>A data track (3) for sequential data on the storage medium (1) exhibits at least two types of area (7, 8), the properties of which, can be measured as impedance, differ from one another in terms of the magnetic permeability or the electrical conductivity of the material, and hence in the value of their magnetic or electrical impedance. For example one type of area (7) could be ferromagnetic or conductive and the other (8) non-ferromagnetic or less ferromagnetic or non- conductive or less conductive. The two cases could be combined. Between two differing areas (7, 8) there may be a gradual transition zone (9) in which the impedance varies continuously. The data track (3) can be covered by a coating layer (4), which is electrically conductive if the data track is readable on the basis of the magnetic impedance and ferromagnetic if the data track is readable on the basis of the electrical impedance. The data track (3) and the coating layer (4) can both be produced by application from at least one suspension on a substrate (2) of the storage medium (1). <IMAGE></p> |
