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Just 10 years ago, copiers used analog systems and were stand-alone devices that did one thing – made copies on paper. The "new generation of copiers," including all those manufactured today, uses digital technology, similar to that found in laser printers.
The older analog copiers produced a copy by scanning an image to an electrostatically charged photoconductive drum that transferred the toner to paper to make a print. Each time a new copy was made, the drum was cleaned and the previous image was erased.
However, in a digital copier, the scanned document is converted to a digital file and is temporarily stored in the copier until a copy is made. The image of the document may reside in the copier until it is overwritten or deleted from the copier memory or hard drive.
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