Plustek escan A280 Enterprise User Manual page 62

This will allow documents being fed into the ADF one at a time and prevent paper-
feeding errors.
P D
LACING OCUMENTS
1. Load the documents, headfirst and face down, toward the center of the ADF
paper chute and all the way into the ADF until touching the bottom.
For single-sided scans, load the documents face down so that the side to be
scanned faces towards the paper chute.
For double-sided scans, load the desired page order of documents face down
so that the side to be scanned faces towards the paper chute.
2. If you need to scan longer documents, pull out the paper chute extension and
stacker to provide further support for the documents.
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