 These need to be removed before the bulk scan begins, and are either scanned separately if they include worthwhile content, or are simply left out of the scan process.Software driven machines and robots have been developed to scan books without the need of unbinding them in order to preserve both the contents of the document and create a digital image archive of its current state.This recent trend has been due in part to ever improving imaging technologies that allow a high quality digital archive image to be captured with little or no damage to a rare or fragile book in a reasonably short period of time.