| 摘要 |
<p>PURPOSE:To provide the multistage recorder of a tachograph for preventing system errors from being generated even when variation is generated in original point position detection by a reflection type photointerrupter. CONSTITUTION:In this multistage recorder of the tachograph for which a recording mechanism 20 is operated by a pin 30 abutted on a cam plate 34 based on the rotation of the cam plate 34, a recording pen performs multistage recording on chart paper, at the time, a semicircular reflection plate 60 integrally rotated with the cam plate 34 is detected by a photosensor 56 and the original point position of recording is controlled, the positions 34a and 34a2 of rotation stoppers for preventing the overrun of the pin 30 provided on the cam plate 34 are set at the positions where the detection signals of the photosensor 56 are not switched between Low and Hi when the rotation of the cam plate 34 is stopped by the pin 30.</p> |
