| 摘要 |
<p>PURPOSE:To obtain excellent contact of a tape with a head even at an inlet, an outlet of a drum by alleviating a friction between a fixed head drum of a VTR, a DAT (digital audio tape recorder) and the tape. CONSTITUTION:A head drum 10 generates an infinitesimal vibration on a surface by vibration generating means, and comprises a cutout 11 formed on an inner periphery of the drum 10. A through cutout is partly formed on the drum, and further a cutout (slit) in a direction of a rotary shaft is partly formed on an outer periphery of the drum.</p> |
