Contrast (Color Mark) Sensors

Contrast sensors, also known as color mark sensors, are photoelectric sensors that determine contrast by sensing reflected white light or RGB light (red, green, blue) to detect the difference in the wavelength of the reflected light between the mark and the background. Contrast sensors are primarily used in packaging and printing machines to detect print marks, but are also well suited for any other application based on contrast and/or color differences. The contrast sensors from Datavision detect the slightest deviations in contrast features even at very high speeds.