The AOI handling system is a compact unit with a broad range of test units. The ceramics are conveyed to the contacting station via an ionisation cleaning station. There, the resistance values of the substrates are tested with a rigid needle adapter.
The ceramics are subsequently conveyed to the three (optionally four) AOI (automatic optical inspection) stations and are examined for cracks, unevenness, faulty imprints, contamination, etc. The rejected ceramics are sent to a review station where the operator can examine and evaluate the defects on the monitor. If he is not sure about an imperfection, it can be conveyed to the microscope position and re-examined by eye. Ceramics that have been defined as poorly are marked with an ink pen accordingly.
