This system has solid-state optical document sensors, with auto size detection. Variable hold-down pressure handles virtually any document including flimsy tissues, creased maps, and thick cards. The side justified, straight through media path transports originals through the scanner at 0.1% +/- 1 pixel accuracy. Flexible document format up to 44" wide by unlimited length & 40" image width, which is ideal for most documents in the AEC, CAD, GIS, archive and reproduction markets. Documents are fed into the scanner from the front, side justified over a gently curved feed tray and detected by reliable, solid state optical sensors for optimum support and positioning of the original. Precision power rollers with 20 offset, dual independently suspended high grip contour rollers transport documents gently and accurately through the scanner. The standard hold down setting is pre-compressed for normal originals with gradually lower pressure settings available for high impact and scratch resistance-more than five times that of normal optical glass. Use Canon's large variety of media to make copies closely matching the original substrate.