This A4 duplex compact color image scanner features a USB 2.0 interface to expand the market for production scanning. With color and monochrome scanning speeds, you'll achieve up to 30 images per minute with excellent image quality. A color CCD censor charge-coupled device combines with a white cold cathode discharge lamp to provide you with 600dpi optical resolution. The integrated automatic document feeder holds a maximum of 50 sheets of A4 20lb. paper. Choose to print in simplex or duplex mode depending on your production needs. Image processing features include image emphasis, simplified DTC, error diffusion, dither, moire removal and non-dropout color generated by the driver.