In my paper “Scanning Preservation Microfilms: Key Issues”, I have presented an OCR-research (Optical Character Recognition) that was initiated by the KB in March 2007. The goal of this research is to test the use of microfilms of newspapers as source material for a work process in which a digital derivative is the end product. For use on the internet, the OCR-quality of the digital derivative is very important. For this research, we have studied the relationship between the technical quality of the microfilms, the technical quality of the microfilm scanners and the final OCR accuracy.