The different types of scanners include flatbed scanners, photo scanners, sheetfed scanners and portable scanners. Flatbed and sheetfed scanners are standard scanners, whereas photo and portable scanners are types of specialized scanners.
Flatbeds can function as standalone devices or can be integrated with other hardware, such as a photocopier, printer or fax machine. A flatbed scanner has a flat surface where the document to be scanned is placed.
Sheetfed scanners are smaller than flatbed scanners and function like printers or fax machines, where a document is fed into the scanner rather than placed on top.
Photo scanners are used to scan high quality photographs, whereas portable scanners are small-sized scanners that can be easily carried in a pocket or bag.