Industrial Automation
Industrial Automation
Aluminum vapor deposition prevents oxidation of glossy packaging. However, this process presents major challenges for packaging machine manufacturers, especially for convention systems that are unable to detect color marks on glossy packaging accurately in a consistent way. This increases maintenance effort and packaging wastage.
Highly-reflective glossy packaging
Detection of color mark on glossy packaging
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In Figure 1, the light intensity received by the sensor from the glossy packaging is too strong. Therefore, there is insufficient difference in incident levels to detect the color mark on the highly-reflective packaging. (A situation known as saturation)
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In Figure 2, the sensor is slightly tilted to avoid saturation, so as to detect the color mark on the packaging. If the sensor is tilted too much, color mark detection will become unstable and inaccurate.
OMRON’s new Color Mark Photoelectric Sensor (E3S-DC) and Color Fiber Amplifier Unit (E3NX-CA) ensure stable detection of aluminium vapor deposition on glossy packaging, when installed directly above packaging wraps.
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*With an emission beam that covers 60° area, the Fiber Unit is capable of stable color mark detection even of tilted glossy workpieces. It effectively receives diffusion light that carries color information, and does not receive much of the specular reflected light.
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