抄録
With the recent increase in recording density of VTR, tape/head interface problems become more important. Magnetic recording characteristics such as drop out are greatly affected by dust and protrusion on tape. In this paper. we report on non-destructive detection of drop out using a system which measures tape/head contact condition. It has been experimentally found that the stretch of tape/head spacing was several hundred times with the height of protrusion, and that the coefficient of record/play back spacing loss was 100 dB.
