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Originally Posted by user
maybe printing the digital camera shoots and then scan them with a sheetfed scanner will be increase OCR accuracy and document quality?
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If you prefer to buy a camera instead of a house, you may use a Hasselblad or similar "space age" film camera, print the photo at 1200 dpi and scan it. Perhaps it can improve the rendering of 6 point and lower fonts in case you are trying to make a copy of a thumbnail size Bible. But you can use a digital Hasselblad H3D for that as well.
As you can read in my previous post, even the perfect copy of a Word document will give you some warnings/errors at the OCR stage. You can correct them manually and you can teach the OCR program to recognize most frequent warnings/errors correctly, if you ocr documents with a similar typeset.
Generally, I do not see a reason for you to concentrate on high-end cameras, scanners or expensive repro setups, unless you are in a business of printing, cartographic, geodetic, CAD or similar industry.
For a paperless office of any size a v-cradle, a proper lighting setup and a "descent" digital camera will do the job. The students can have their texbooks converted to Sony Reader in a matter of hours (copyright observed - it is different for different publications and countries) and after processing with pdflrf they are perfectly readable on a small and greyish Reader screen. The OCR and indexing will help you find any word or phrase if you store the textbooks in your laptop (unfortuntely, the Sony Reader will not allow you to search for text.