In a printing system, a print data generating unit generates first print data of an original image that includes a bar code storing a disposing position and a particular sub-image. The particular sub-image is disposed at the disposing position when the original image is read and processed. A first printing unit prints the original image on a first recording medium based on the first print data. A controller controls a reading unit to read the original image printed on the first recording medium and to retrieve the disposing position and the particular sub-image from the bar code. The controller generates second print data of a processed image in which the retrieved particular sub-image is disposed at the retrieved disposing position. The controller controls the second printing unit to print the processed image on a second recording medium based on the second print data.