| http://www.w3.org/ns/prov#value | - Further, even if the magnetic head is not in contact with the magnetic recording medium, a flow of the above-mentioned pulse shape current to the magnetic head, when the magnetic head has hysteresis characteristics of such B-H curve as shown in FIG. 4, may magnetize this magnetic head and thus there is a possibility of deteriorating the electro-magnetic properties of the magnetic head.
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