Why can’t I scan both sides of a photo or document?

Plustek Original FAQ List

Since the Z300 is dedicated to photo scanning, we need to balance protecting your photos with keeping the price competitive. Scanning a stack of photos and documents at once would either increase the scanner’s cost or pose a risk of damaging your documents, especially old photos. To mitigate this risk, the final design supports scanning one photo or document at a time, with single-side scanning only.