Editing Image scanner (section)

=== Flatbed ===<!-- [[Flatbed scanner]] redirects here -->
[[File:HP-Scanjet-IIC 05.jpg|thumb|A flatbed scanner ([[HP ScanJet|HP ScanJet IIC]]) with its lid closed]]
A flatbed scanner is a type of scanner that provides a glass bed ([[platen]]) on which the object to be scanned lies motionless. The scanning element moves vertically from under the glass, scanning either the entirety of the platen or a predetermined portion. The driver software for most flatbed scanners allows users to prescan their documents—in essence, to take a quick, low-resolution pass at a document in order to judge what area of the document should be scanned (if not the entirety of it), before scanning it at a higher resolution. Some flatbed scanners incorporate sheet-feeding mechanisms called [[automatic document feeder]]s (ADFs) that use the same scanning element as the flatbed portion.<ref>{{cite web | date=n.d. | url=https://www.pcmag.com/encyclopedia/term/flatbed-scanner | title=Definition of flatbed scanner | work=PC Magazine | publisher=Ziff-Davis | archiveurl=https://web.archive.org/web/20231209215942/https://www.pcmag.com/encyclopedia/term/flatbed-scanner | archivedate=December 9, 2023}}</ref><ref>{{cite book | last=Gookin | first=Dan | author-link=Dan Gookin | date=2013 | url=https://books.google.com/books?id=-H_6Ml7nnQAC | title=PCs for Dummies | publisher=Wiley | page=304 | edition=12th, ebook | isbn=9781118232613 | via=Google Books}}</ref>

This type of scanner is sometimes called a ''reflective scanner'', because it works by shining white light onto the object to be scanned and reading the intensity and color of light that is reflected from it, usually a line at a time. They are designed for scanning prints or other flat, opaque materials, but some have available transparency adapters, which—for a number of reasons—in most cases, are not very well suited to scanning film.<ref name="basics">{{cite web | url=http://www.dl-c.com/basics.pdf | title=Digital Image Basics | last=Sachs | first=J. | publisher=Digital Light & Color | date=February 1, 2001 | access-date=November 19, 2015 | url-status=dead | archive-url=https://web.archive.org/web/20151120202325/http://www.dl-c.com/basics.pdf | archive-date=November 20, 2015}}</ref>