scanner type: flatbed a3 colour image scanner sub-scanning method: movement of the carriage photoelectric device: 6 line alternated colour ccd (94,500 pixels) document size: 310 x 437mm light source: xenon gas fluorescent lamp optical res: main: 2400dpi (by 6 line ccd with 87840 pixels), sub: 4800dpi with micro step optical density: 3.8 dmax o/p res: 50dpi to 12,800dpi (in 1 dpi steps) zoom: 50% to 200% (in 1% steps) pixel depth: 48 bit internal, 24 bit external scan speed: reflective document (1200dpi)- 2.7 msec/line (line art), 8.0 msec/line (colour) reflective document (2400dpi)- 5.3 msec/line (line art), 16.0 msec/line (colour) brightness: 7 level i/face: usb 2.0, ieee 1394 dimensions: 656 x 458 x 158 mm (wxdxh) weight: approx 14.5 kg