| 摘要 |
PROBLEM TO BE SOLVED: To reduce X-rays leaking from a carrying-in port and a carrying-out port. SOLUTION: A product passage sensor 15 is installed in an inspection chamber 9, and an opening/closing control part 16 and an opening/closing mechanism 14 are installed in order to perform intermittence of the X-rays synchronously with the output from the sensor 15. Hereby, the X-rays are irradiated by opening the opening/closing mechanism 14 by the output from the sensor 15 only when an inspection object is on the X-ray irradiation position, and X-ray irradiation is blocked by closing the opening/closing mechanism 14 by the output from the sensor 15 when the inspection object is not on the X-ray irradiation position. COPYRIGHT: (C)2005,JPO&NCIPI
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