| 摘要 |
<p>PURPOSE:To reduce the attenuation of vibration generated in a tape by providing an oil fence for preventing the leak of oil to the tape running face to the tape running face to the lower side of the side face of an impedance roller. CONSTITUTION:An oil fence 33 is inserted into the lower part of the side face of an impedance roller 30 by utilizing elasticity of the oil fence 33. This oil fense 33 has elasticity since its material is the felt, and by utilizing its elasticity, it is subjected to press fitting before a roller 31 is fitted to a shaft 21. Also, in order that the oil fence 33 can be inserted easily from the end face of the roller 31, the end face of the roller 31 is tapered 31b. In such a way, by enlarging rotational energy : E = Iw<2> of the impedance roller, the tape vibration attenuation effect is inlarged, and the fluctuation of a reproducing image, what is called a jitter, can be reduced.</p> |
