Classifying – separating – and assorting solids – Adhesion – Coated surface or mass
Patent
1976-06-23
1978-04-04
Reeves, Robert B.
Classifying, separating, and assorting solids
Adhesion
Coated surface or mass
209 75, 209 74M, 250223R, 356178, 356237, 198403, B07C 5342
Patent
active
040821889
ABSTRACT:
Method and apparatus for high-speed automatic inspection and processing of large numbers of solid discrete particular objects such as multicolored capsule dose forms in regard to color and/or defect detection, in which virtually all unacceptable material is isolated and an accurate running and total count of acceptable material is provided. The objects are transported in a number of channels past respective optical heads comprising an electro-optics system, the transport mechanism being arranged to provide signals representative of relative object location. One or more rotary transport drums communicating with the front end of the transport mechanism are also provided to enable additional viewing of the capsules in either or both "end-on" orientations, in order to effect a more complete body of information for defect detection. The electro-optics system is comprised operatively of separate color recognition and shape inspection subsystems. The color and shape signature information of an object is obtained by sampling photodetector outputs in dependence on the object position information from the transport mechanism and also the sensed specular peak by a computer-controlled arrangement. The signatures obtained are compared to stored reference signatures for color and shape, and output signals are developed from the comparison which are transmitted to a reject arrangement for isolating the unacceptble material.
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Grimmell William Charles
Kaetzel Gilbert Carl
Moran John Milton
Zanko George Michael
Gould George M.
Hoffmann-La Roche Inc.
Hopkins Mark L.
Reeves Robert B.
Rolla Joseph J.
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