Abstract
A new recording method to improve the r/w characteristics of Co-CoO obliquely evaporated tape was proposed. By using tail-off method in which the recording current was cut for a certain period and hence the timing of applying the reverse field was delayed, the carrier-to-noise ratio increased by 2 to 3 dB compared to the conventional method using rectangular wave current. The above improvement were due to the increase of carrier output and the decrease of media noise. The increase of carrier output should be explained by suppression of demagnetization caused by the trailing edge field. On the other hand, the decrease of media noise should be explained by the increase of the trailing edge field applied in hard axis that makes the width of domain narrower.
