摘要 |
PROBLEM TO BE SOLVED: To provide an examining device and an examining method for readily examining the quality of a filter rod for a cigarette. SOLUTION: This apparatus for carrying out the examining method has a drum 6 with grooves for conveying filter rods F, a rod guide 10 for providing a rolling power to the filter rods F in the conveying process, and a light projector 26 and a light receiver 30 for detecting the presence or absence of the rolling of the filter rod F by the change of the projected diameter.
|