Go to Menu -> Print
Choose the preffered mode for image scaling:
For printing via Android, a Printer Bridge is required. See the following links below for your printer:
Epson: https://play.google.com/store/apps/details?id=com.epson.mobilephone.android.epsonprintserviceplugin
HP: https://play.google.com/store/apps/details?id=com.hp.android.printservice
Canon: https://play.google.com/store/apps/details?id=jp.co.canon.android.printservice.plugin