Around 1930, the idea of a machine able to sort by color was introduced in the US. By 1937, the first color sorting machine was made in England. The first color sorting machine was introduced to Japan in 1966 and the usage of these machines has since spread worldwide. Put simply, color sorting machines can detect and remove materials based on colors and visual elements not previously possible with conventional sorting machines.
Discolored or damaged rice and foreign substances could now be sorted out by these machines, thus the product quality significantly improved. Recently, due to traceability issues, farmers themselves have started to purchase rice color sorting machine due to the demand of consumers who prefer to purchase directly from farmers.
