The main requirement when selecting a scanner for use with Paperless is that TWAIN Drivers must be available. You can typically verify if a scanner has TWAIN Drivers available by checking the manufacturer's Technical Specifications for the model being considered.
Most TWAIN-compliant scanners should work fine with Paperless. While we don't officially recommend any particular models, we have heard from customers who have had success with the following:
Fujitsu Fi Series
Canon imageFORMULA DR Series
Customers often ask us about the Fujitsu ScanSnap series. While they are cost-effective, the ScanSnap series does not have TWAIN Drivers available so they are not supported.
Other specifications to consider when deciding on a scanner:
Pages Per Minute or PPM (scanner speed)
Daily Duty Cycle (number of scans per day for which the scanner is rated)