Emailing scanned documents

[king1]

for starters when they scan they are scanned as an image format, even if you choose PDF. That will explain the colour background

I usually just use the brother Control Center 4 for scanning (orange icon CC4), it has an OCR (optical character recognition) option that you could try to get the text only, but I have usually found that to mess up badly...

In the CC4 settings there are options to adjust the brightness of the scan and the contrast, contrast is the one you would need to reduce the background, not sure if Nuance has contrast controls...

HTH