Canon PIXMA MP110 printer-scanner gave problems recently. Searching for the 2 original software drivers gave no luck. Searching again gave some hope of getting the scanner to work again.
Here are the 2 software drivers needed for it to work again. You have to install both, one at a time. Remove the obsolete problematic software first, then install the newly downloaded ones.
Software to download and install for Canon PIXMA MP110 to work again:
Canon PIXMA MP110 printer driver (for printing and for scanning)
https://www.canonprintersdrivers.com/canon-pixma-mp110/
MP Navigator (for Canon scanner function to work)
http://download.cnet.com/MP-Navigator-for-Windows/3001-2088_4-10973876.html