08-03-2008, 06:04 PM
Most current Xerox copiers, and this applies to many other makes, no longer have a lens used in the process at all. They use a scanner bar and turn the image into a digital format similar to any ordinary flat bed scanner. Some have a fixed scanner bar for the document feeder as well, the motion is supplied by the feeder. Depending on the programming used internally to create the printed image, distortion can occur. Especially if the speed/displacement of the moving bar is any different from what is programmed in. Sometimes this is intentional, to make copies detectably different. All this makes it easy for adding options such as fax, document scanning to save to computer, and various other image modification.
In any case, space-time's suggestion should work. But the problem does come up in copying other material that must be exact. For that there are specific models designed from the ground up to give accurate renderings in both dimensions.
In any case, space-time's suggestion should work. But the problem does come up in copying other material that must be exact. For that there are specific models designed from the ground up to give accurate renderings in both dimensions.