| 摘要 |
<p>A reproduction head includes a lead element, a first and a second electrode arranged at both ends of the lead element, a grounding electrode arranged between the first and the second electrode, a first constant current circuit for flowing a first constant current between the first electrode and the grounding electrode, and a second constant current circuit for flowing a second constant current between the second electrode and the grounding electrode. The reproduction head further includes a calculation unit connected to the first and the second electrode for combining the output of the first electrode and the output of the second electrode, and a storage unit having a table relating a combined value calculated by the calculation unit to the relationship between the outputs of the first and the second electrode.</p> |
