TAKEX SEEKA sensor, mark sensor was developed to detect a specific mark, change of color, or other process indication mark or bar. These units are used in the detection of labels on backgrounds, printing systems, etc where color and or height can influence the process operation. The optical axis match is easy, the detection accuracy is greater than the diffuse reflection type. These units are available in Red, Green, and Blue illumination and can be very color specific or general purpose, as needed. These sensors are primarily used in the Packaging, Labeling, Printing and textile industries, but can be used anywhere specific mark detection is needed.