X-ray scanner for detecting plastic articles

Details X-ray scanner for detecting plastic articles X-ray scanner for detecting plastic articles

1987-05-22

1989-11-28

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 62, 378 69, 378 86, 378 90, G01V 2304

Patent

active

048842893

ABSTRACT:
An x-ray scanner for detecting plastic articles has an x-ray source which generates a fan-shaped x-ray beam through which an article to be examined is moved. A primary radiation detector array is disposed at a side of the article opposite to the x-ray source and functions to provide a normal x-ray image identifying metal articles. Additional detectors, which detect scatter radiation are disposed around the examination space at a distance from the primary radiation detector. The scatter radiation detectors detect scattered radiation characteristic of that produced by plastic articles. Signals from the scatter radiation detectors are processed, by which the presence of a plastic article can be identified.

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