| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for measuring a track deviation from a straight line capable of shifting the reference start position of on-off drive corresponding to the magnitude of the deviation in the objective interval by installing the feeder device of a light shutter blade at the position shifted by prescribed length. SOLUTION: In the device, a light emission means is arranged on an end of the track regarding the interval of the track, and on the other end of the interval of the track the light receiving means for outputting the receiving signal from the light emission means. At the mid-point of the track interval the feeder device for out-in driving in a direction perpendicular to the track is arranged, based on the out-in driving amount for cutting the light path from the light emission means to the light receiving means, the track deviation from the straight line measurement device is constituted for measuring the deviation from the straight line in the objective interval. A mounting device with a guide is provided for shifting to the position apart from the track position displaced by prescribed distance. COPYRIGHT: (C)2007,JPO&INPIT
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