Once there, you can edit and change the scanned image to heart's content. Scanning in text which can then be turned into text within your word processor.
All scanners work in much the same way.
A strong light is passed over the image. This process is repeated until the whole image is scanned. This is where the different types of scanner become important. This ensures a smooth, seamless movement and produces the best results. A hand held scanner relies on YOU to move the scanner head.