The full version driver for these type of printer are no longer available as the printer which you are using is very old. In order to use the scan feature make sure that your printer is connected and it is printing and it will get installed after you plug in the USB cable .An icon will be formed in the printer page in the control panel , what you can do is right click on the printer and there you may find an option to scan.
or else go to ms paint and click on file and then click on from scanners and cameras.
hope you find a way of scanning after following these steps
printer worked OK in XP moved to Win 7 and now scanner does not work any ideas