In overwrite recording on thick recording media, recording dips or so-called "re-recording phenomena" have been observed. In this paper, the overwrite characteristics for thin recording media such as metal evaporated tape are reported. It was experimentally confirrmed that recording dips in over-write characteristics occur for thin media as well as for thick recording media, when some recording conditions were satisfied. To explain the characteristics, the effects of internal field and rotating vectorial head field are discussed.
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