| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve precision in a signal pickup of a magnetic head by providing a fixed drum fixed to a main base, a rotary drum connected to a rotary shaft turnably supported to it, a magnetic head provided on the rotary drum and traveling and a vibration damp means provided on the fixed drum, being in contact with a traveling magnetic tape and damping vibration. SOLUTION: The vibration damp means 200 is composed of an elastic body such as a coil spring 210 provided on an opening part 132 formed on the fixed drum 130, and a vibration damp member 220 brought into contact with the magnetic tape 10 energized to the outside in the radial direction of the fixed drum 130 by the coil spring 210 and traveling. A contact surface with the magnetic tape 10 is formed circularly in a prescribed curvature, and the elastic force of the coil spring 210 is smaller than the tension of the magnetic tape 10, and is pressurized to the inside by the tension of the magnetic tape 10 to damp the vibration occurring due to high speed rotation and the contact of the magnetic tape 10 with the magnetic head 121.</p> |
