| 摘要 |
<p>PURPOSE:To reduce a head impact sound by suppressing tape vibration of a tape out side with simple constitution in a rotary head magnetic recording/ reproducing device. CONSTITUTION:A first minute protrusion 10 is arranged in the vicinity of the outside where a tape like recording medium 4 is detached from a fixed cylinder 3 and on the position close to the rotary head so as to slide contact to the tape like recording medium 4, and a second minute protrusion 11 is arranged on the position closed to a lead than the first minute protrusion 10 on the fixed cylinder, and the second minute protrusion 11 is formed at least two kinds of lead curves. Thus, a tape distortion causing a snap through phenomenon immediately before a magnetic head passes through the first minute protrusion is suppressed, and the tape vibration occurring due to the impact at the time is suppressed also, and the noise is reduced.</p> |
