Granule inspection apparatus
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United States of America Patent
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May 16, 1989
Grant Date -
N/A
app pub date -
Aug 25, 1987
filing date -
Nov 6, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A granule inspection apparatus comprising a pair of transparent rotating body installed in parallel at prescribed spacing, a granule falling passage being formed between mutually opposing surfaces of the rotating bodies, granules are fallen through this passage, falling granules are lighted by the reflection light source arranged on the side of one transparent rotating body and by the transmission light source arranged on the side of the other transparent rotating body, an image sensor is picked up the images of the lighted granules, presence of defectives is detected from image signals, a selector is driven to select non-defectives from defectives.
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