Document and Image Scanners
Scanners are perfect for sending a document by email (and have almost ended the age of the fax machine).
Generally there are two types of scanners: flatbeds and automatic document feeders (ADF). Flatbeds are generally cheaper, but can be labor intensive when scanning more than one page. ADF’s can also be one-sided or two-sided (simplex and duplex) for scanning both sides of a page, consider if what you scanned is printed both sides.
Other considerations include how fast it scans, maximum page width (can it handle bigger than standard A4), resolution (how clear the image is, especially important for images and signatures), and network connectivity (how many computers can use it).