Very annoying is are loud squeaking noises that occur when scanning certain types of paper. Amazon was so accommodating to me to deliver even after several months a replacement unit, in which the same noises also occur, however. The Canon support told me to procure at their own expense new pick rollers. In addition, the scanner the paper often absorbs only when you lift it slightly, otherwise no paper is detected in the document feeder.
Two stars only because the scan results are good, the scanning software is easy to use and the device is very compact. Nevertheless, the price-performance ratio in my opinion is wrong.
