An image reading system is disclosed that has an image information reading unit for reading optical information on a manuscript, and an image outputting unit for outputting the optical information read by the image information reading unit to a recording medium. The system includes an IC tag information reading unit for reading IC tag information held by an IC tag provided on the manuscript, an IC tag information outputting unit for outputting the IC tag information read by the IC tag information reading unit to the recording medium, a conversion unit for converting the IC tag information into coded image data, and a control unit for controlling outputting of the coded image data.