The Smarteye Colormark II registration mark sensors combine unique colour perception ability with very high-speed response. Many important features have been incorporated into the design, to meet the increasing demand for precision registration control on today’s higher speed packaging machinery. It provides extended operating ranges, enhanced background suppression, and the elimination of saturation problems.
The specific task of a photoelectric registration mark detector is to respond to printed registration marks on packaging material as they pass through the sensor’s light beam. The output of the sensor must switch when the mark arrives precisely in position for the control function to occur. The resolution of the exact location of each passing registration mark is critical to ensure that the initiation of the electromechanical response triggered by the sensor is in synchronisation with the arrival of the mark.
High speed
The high-speed (50 microseconds) response time of the Smarteye Colormark II helps to ensure that the point of detection of the sensed mark will not shift as the velocity of the moving web varies from slow startup to maximum velocity.
High colour perception
Colour perception is a must for detecting registration marks printed in a wide variety of colors. The Smarteye Colormark II with different light sources detects the greatest variety of colour of marks on a wide variety of material.
Light sources
Select a white LED light source to detect a variety of marks. Select red, green or blue LED light sources in applications where the white light source fails to perform; for example a blue LED light source is recommended to detect pale yellow marks on a white background. Consult selection guidelines to help in specifying the correct Smarteye Colormark II to fit your sensing requirements.
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