I used the ABBYY orc engine to digitize printed documents (idk why they couldn't just keep around the file used to print) and it was quite accurate. At worst one out of a couple hundred would have enough issues where readability was an issue.
Similar experience here, when building a mobile app that did OCR + translations.. As long as the source image was in decent shape, ABBYY did very well. It's also incredibly expensive.
