The sheet-fed scanner scans both sides of a document as it moves through the machine. The scan head sits between the two trays, usually with two scan heads fixed in place. They have an input tray where you stack documents, and an output tray. Sheet-fed scanners aren’t all that different. The Brother ImageCenter ADS-2000e sheet-fed document scanner. Some flatbed scanners can perform duplex scanning, which scans the first side of the page, retracts the page back into the ADF feeder, turns it over, and scans the second side. All flatbed scanners, whether they have an ADF or not, have a hinged cover that you lift to place an original onto the glass platen.ĭocuments or photos remain stationary during the scanning process while a scan element moves down the page. The scanner automatically moves the pages onto the glass platen one-by-one for scanning. Some flatbed scanners include an Automatic Document Feeder (ADF), which lets you place a stack of same-size documents into the feeder. These scanners can be either stand-alone units or, more commonly, part of an MFP or All-in-One printer that provides printing, copying, and sometime fax capability in addition to scanning. Setting aside business-card scanners and specialty scanners for slides and photographic negatives, you’re left with two basic types of scanners: flatbed and sheet-fed.įlatbed scanners feature a glass scan platen, generally letter-sized or legal-sized, upon which you place the document to be scanned. No one scanner can address all scanning needs. While many documents already exist in digital form-think word processing, spreadsheets, and emails-plenty of paper documents, photos, and forms need to be converted so that they can be manipulated or stored digitally. The ability to create documents in a digital format lies at the heart of document management. And, because paper just won’t go away, document-management applications are increasingly popular. Pundits have written about the paperless office for years, but it has yet to appear.
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