Produce grading system using two visible and two invisible color

Details Produce grading system using two visible and two invisible color Produce grading system using two visible and two invisible color

1978-02-08

1980-05-27

Rolla, Joseph J.

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Condition responsive means controls separating means

209582, 209577, 356407, 250226, B07C 5342

Patent

active

042049504

ABSTRACT:
A produce grading system that detects the light reflectance from an object in four color bands. Two bands are in the visible range and two are in the invisible range. By comparing various color combinations the system looks for the presence of a desired color, an undesired color, and determines if the object is vegetable or nonvegetable matter.

REFERENCES:
patent: 4057146 (1977-11-01), Castaneda et al.
patent: 4095696 (1978-06-01), Sherwood
patent: 4105123 (1978-08-01), Irving et al.
patent: 4120402 (1978-10-01), Swanson

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