| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of determining a tip tilting angle of a sheet-like member capable of determining not only the tilting direction of the sheet-like member but whether the tilting angle is proper or not, and to provide its apparatus. SOLUTION: The tip of a belt member 1 is sensed by a first sensor 11 and a second sensor 12 both arranged apart at a predetermined space in the widthwise direction in a transporting route. The tilting direction of the tip of the belt member 1 is determined by the sensing order of the first sensor 11 and the second sensor 12. It is determined whether the tip tilting angleθ1 is a proper tilting angle or not, the tip tilting angleθ1 calculated from the movement distance L1 from a time when one of the first sensor 11 and the second sensor 12 senses the tip of the belt member 1 to a time when the other sensor senses it and the distance L2 between sensing positions of the sensors 11 and 12. Accordingly it is possible to determine whether not only the tilting direction of the belt member 1 but the tilting angle are proper or not. COPYRIGHT: (C)2006,JPO&NCIPI
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