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Reverse automatic document feeder A scanner with a duplexing automatic document feeder A Konica Minolta photocopier with an automatic document feeder in use. In multifunction or all-in-one printers, fax machines, photocopiers and scanners, an automatic document feeder or ADF is a feature which takes several pages and feeds the paper one page at a time into a scanner or copier, [1] allowing the ...
Duplex scanning document scanner (Fujitsu fi-5110C) Duplex scanning is usually implemented on multifunction printers using a Reversing Automatic Document Feeder (RADF), which removes, reverses, and re-feeds the document after scanning one side. Duplex scanning is achieved on scanners by either RADF or by single pass duplex scanning using two ...
Built in May 1927 by the Baldwin Locomotive Works (BLW), No. 3751 was BLW's and the Santa Fe Railway's first 4-8-4 type, costing $99,712.77. [3] Tests showed that the new locomotive was 20% more efficient and powerful than the 3700 class 4-8-2 Mountain types, which at the time were Santa Fe's most advanced steam locomotives. [3]