When a printing mode is designated by user operation, an MFP embeds information specifying a storage location in designated stored image data and prints the resultant image data. When a user adds information in handwriting or the like to the above-described printing material, and the printing material after the information is added is scanned, the MFP specifies the storage location from the image data, which is scanned data, and replaces the image data in the above-described storage location by the scanned image data and registers the resultant image data. At the time of the above-described printing, even if the printing condition is set for the image data, the designation of the above-described printing mode allows the printing condition suitable for scanning the printing material to be set.