摘要 |
PURPOSE:To construct the whole belt drive device compactly and simplify the belt replacement works, wherein the belt drive device is such a one as capable of sensing and correcting eventual skewing automatically. CONSTITUTION:A transcription belt 4 is set over No.1-No.3 rollers 1, 2. 3 in such a way as capable of running. The two ends of No.1 and No.2 roller 1, 2 are supported by a pair of plates, while the two ends of the No.3 roller 3 are supported by a tension plate 7 which is installed outside of these plates 5 and arranged slidably relative to them. Between the tension plate 7 and No.3 roller 3, functional components are located so as to exert different functions such as correcting a skew, giving belt tension, and fitting and removing the belt. |