My Pixma MX925 prints from wireless laptop Win8.1 but won't scan. Only scans to desktop.

[MartinJH]

How can I set up my Canon Pixma MX925 to scan to wireless laptop running Windows 8.1, no problem in printing.

Desktop connected by ethernet prints and scans. Printer only offers option to scan to desktop. 

Have searched unsuccessfull to find answer.