This discussion really belongs elsewhere on the site--I'm sure a moderator will move it soon. Look for a scanner with software that will:
- Convert negatives to positives,
- allow you to select areas within an overall large image as separate multiple scans, and
- comes with OCR software or can export to TIF format (and assuming your computer is some flavor of Windows, the built-in OCR tool will ddo the job for you)
I have an Epson V370 that does all of these. It's way outdated, but I'm sure there are good equivalents. when I do 1:1 scale book scans, I scan at 600 dpi. I'd recommend setting your scanner to either 300 or 600 * whatever scale your negative is smaller than the original text.