Patent attributes
An image scanning device is provided with first and second sensors for scanning first and second surfaces of a sheet. The first sensor reads a monochromatic image, and the second sensor reads a color image. The image scanning device is further provided with a plurality of image processing systems. A switching system is provided which connects the input terminal of a predetermined one of the image processing systems with the output terminal of the first sensor when the double-side scanning operation is performed. A signal output from one of output terminals of the second sensor other than the terminal connected to the predetermined image processing system is used as an image signal representing the image of the second surface of the sheet when the double-side scanning operation is performed.
