My God, who saves the scans in PDF! I understand that all sorts of monstrous boxed packages to the scanners and offer it, but the effectiveness and convenience of this method is very small.
\rIn General, the main principle: no special software "to scan" by and large does not exist.
Take any image viewer/Converter or image editor and search for function to get images from the scanner (in English this is called "Acquire" or some "Import" in the Russian-speaking usually just "Scan", is often in the menu "File") through a standard TWAIN or WIA interface. Dialogue directly control the scanning process will be the same for your scanner model in all applications. TWAIN drivers along with a small graphical interface manufacturers to develop scanners and WIA provides a uniform interface (although often less functional than the more long-lived TWAIN), implemented directly in Windows.
To save the scanned pages, use the PNG format as the most common and effective.
Of free apps recommend first and foremost the viewer-Converter-organizer XnView
. The joy of scanning is the function of the batch storing and processing. If you ever seen ACDSee, this is able to in fact even more is that the functions of the image editing in it, only the simplest.
Among the free editors, you can highlight Paint.NET