Most types of optical discs are read out from one side and printed on the opposite side by offset, screen or pad printing. Printing process usually is controlled by an appropriate inspection system. dr. schwab offers a high-resolution print inspection, based on a 4 megapixel matrix camera.
FPI disc Print identifies all relevant printing defects, such as s stains, bumps, clouding, ghosting and even slight colour shifts. The system takes four records per disc: full reflection white light 90° inspection, plus diffuse illumination with red, green and blue LEDs, each one with excellent light distribution over the disc.