Give preference to systems that can properly decolumnize documents with no operator intervention. Reading Both Sides Double-sided documents can pose a problem to some OCR products. However, if you need to scan both sides of the page, you may have to do one sheet at a time to get both sides in the proper order. Check for the ability to read double-sided documents by scanning all of one side, then all of the other side, ending up with the whole document in the right order. Reading at the Right Time Scanning long documents normally requires someone feeding in pages and waiting for both scanning and recognition to complete.
Most products scan a page, then recognize it, then scan another, and so forth.
Scanning is usually a matter of 3 to 11 seconds per page, depending on the scanner. Recognition can take considerably more time 50 to 60 seconds on a typical 2,000-character page. This ability may be called deferred processing, delayed recognition, batch processing, or some similar term. You can scan 100 pages, then go to lunch while recognition proceeds without further intervention. Check for deferred rocessing and choose a reliable, high-speed scanner that can keep up with your workload.