Charles Kenyon shared this with us in microsoft.public.word.newusers:

Sorry. This isn't a Word issue but a scanner or an Adobe Acrobat
question. Don't have an opinion. You might try asking in a relevant
newsgroup.

Correct answer.

However, check the dpi settings on your scanner. A lower dpi setting
gives smaller files with lower quality. Try to find a balance between
file size and acceptable quality.

--
Amedee Van Gasse using XanaNews 1.17.4.1
If it has an "X" in the name, it must be Linux?