Automatic document feeder

Automatic Document Feeder ( DHS, also automatic document feeder or document feeder, english Automatic Document Feeder ADF) is used by copy or print devices and scanners to automatically scan a multiple -page document.

The Automatic Document Feeder attracts individual sheets from a stack of paper, leading them through the scanner and then throws it back out. The Platen cover this need not be opened and closed by either side, resulting in substantial time savings compared to manual scan over the placing originals on the exposure glass.

Depending on the equipment and later use ( multifunction printer for home use or large office copier ), the main chute of a DH between 30 and 75 sheets of.

Simple, single operating automatic document handler today are becoming less common, as they are replaced increasingly by both sides working DADF (English Duplex Automatic Document Feeder ) or RADF ( Reversing Automatic Document Feeder english ). These units can also scan the back ( RADF ) the originals in a single pass with two scanning units (DADF ) or by rotating the template after scanning the front side and thus capture templates on both sides

  • Printing machine technology
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