Satake evolution optical sorting technology


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Optical sorting technology has become a long way since Satake introduced the first electric color sorter over 80 year ago.

Evolving sorting technology Satake

Hình 1: Evolving sorting technology Satake

About Satake

In 1896, the founder of the Satake Corporation, Riichi Satake, invented and began the production of Japan’s first power driven rice milling machine.

In the subsequent one hundred years, a succession of successful developments and a wealth of accumulated research and knowledge have made Satake the world leader in grain processing systems.

Satake produces a comprehensive range of individual machines, integrated systems and totally engineered solutions for the processing of rice, wheat and other grains.

The Company is proud of its tradition of innovation which ensures that Satake machines and systems are always at the forefront of technology.

Satake has achieved its position as the oldest, largest and most advanced company in its fields through its commitment to offering customers superb equipment, specially developed to meet their needs.

This driving principle has led directly to the prosperity of the Company.

We are most grateful to all our customers for their patronage which has allowed us to become known and respected in Japan and over 150 countries throughout the world.


Both the human eye and the evolution RGB detect color through three wavelengths (red, green and blue), allowing the sorter to match the eye’s ability to see true color.

The evolution RGB uses 16 million colors, high-resolution cameras and long lasting LED lighting to detect and remove defects.

It works like the human eye – the smallest color deviations are identified and rejected. It also uses size and shape sorting to remove challenging defects of the same color.

After extensive research and development by our engineering team, and listening to customer requirements, the evolution is now fully integrated with size and shape sorting technology.

The evolution is able to distinguish acceptable product from same-color reject contamination.

The proprietary, advanced alogrithm software and technology takes the industry-standard platform and extends it to the next level.

The majority of defects can be seen with the custom full-color RGB cameras, but for tough-to-see foreign material, the size and shape software provides additional assurance.

The evolution MIR (Multi-wavelength Infrared) optical sorter uses numerous bands of IR to detect to remove the highest level of foriegn material and other rejects that color and shape may not detect.

The MIR is an excellent choice for superior sorting performance from a high-level, high-capacity infrared sorting platform.

Evolution benefits:

Setting standard Satake

Hình 2: Setting standard Satake

  • The RGB full-color series is ideal for multiple colored applications or minor shade differences.

RGB color

  • The MIR sorter line is configured to remove defects in the tough to monitor IR wavelengths.


  • Combining both the full-color RGB and multi wavelength IR technology provides industry-standard detection.
  • Proprietary image capture processing software with ability to pinpoint defects and remove them accurately.
  • No lamp or optical filter change required during product changeover.
  • Improved high capacity material handling system, up to 50% more capacity.


  • High ejector density design for concentrating the rejected fraction.
  • Movable screen to observe the defect image data during product set up.

Technical specifications

  • “The evolution is the ideal platform and series of sorters for detecting and sorting/separating by subtle shade and color differences, speck defects, foreign material, insect damage, mold, decaying product, etc.”

Benefit evolving sorting technology Satake


Agriculture – Tree nuts, peanuts, edible beans, coffee beans, corn, maize, soybeans, pulses, vegetable seeds, plastics, wheat, barley, chickpeas, etc.
Bulk Solids – PET flakes, plastic regrind and flake, virgin and recycled plastics, pellets, metals, minerals and other bulk solids.

Typical sorting applications Satake

Evolution series: Sorting soybean for color and shape

A Satake applications engineer demonstrates how the Satake evolution RGB+Shape optical sorter handles incoming soybean product at 5,000 lbs/hr per chute inspecting each seed for color and shape variations.

Typical sorting shapes applications Satake

Evoltution series: Dark hilum detector on doy beans

A quick discussion and demonstation on how the Satake evolution RGB optical sorter (and other similar machines) detect the dark hilum spots on soybeans, and the challenge of fully viewing the product.

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