A portable terminal includes a storage circuit, a communication circuit, a reading instruction circuit, a target-selection accepting circuit, a scanned-image data acquiring circuit, and a combined image data generating circuit. The reading instruction circuit instructs the scanner to read the document image. The target-selection accepting circuit accepts selection of target image data from the image data inside the storage circuit. The scanned-image data acquiring circuit acquires the scanned-image data from the scanner. The scanned-image data is generated by the reading of the document image by the scanner. The combined image data generating circuit generates single combined image data with a plurality of pages by combining the scanned image data with the target image data, and acquires the combined image data instead of the scanned image data.