X-RAY FOREIGN MATTER DETECTOR

摘要

PROBLEM TO BE SOLVED: To provide an X-ray foreign matter detector capable of preventing deterioration in foreign matter detection performance by substantially matching the size and shape of an object to be inspected on two X-ray images obtained by an energy subtraction method.

SOLUTION: An X-ray foreign matter detector comprises: a support construction 100 for supporting an X-ray tube 31 in a manner adjustable to a position of a conveyance direction upstream side or a conveyance direction downstream side of a conveyance unit 2 on a plane surface parallel to a conveyance surface; an adjustment determination unit 81 for obtaining a first waveform and a second waveform that indicate shading changes in a conveyance direction of an object W to be inspected from a first X-ray image data and a second X-ray image data and for determining an adjustment direction of the X-ray tube 31 on the basis of a difference between the shape of the first waveform and the shape of the second waveform; and a display device 5 for displaying an adjustment direction determined by the adjustment determination unit 81.

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