Re-Recording Phenomena in Metal Evaporated Tape

Metal evaporated (ME) tape is regarded as the recording medium for next-generation VTRs with the greatest potential. Details of the recording mechanism of ME tape are, however, not yet clear. In particular, the re-recording effect in overwrite recording is as yet unclear, and no persuasive explanation is at hand. In this paper, the maximum output frequency response for different orientations, as well as the overwrite recording characteristics, are measured and discussed. The differences in frequency response for different orientations are explained by a recording model. The overwrite characteristics are similar to those of conventional videotape. In consideration of the squareness of ME tape, the contact printing model is employed to explain the re-recording phenomena.