A color image scanning and printing device includes a scanning unit which scans an image of a plural number of pages, a conversion unit performing a conversion process by converting a scanned result scanned by the scanning unit into image data of each of a plurality of color components for printing one page as a unit, a printing unit which prints an image based on the converted image data of each of the color components, and a control unit which executes the conversion process by the conversion unit for a part of the color components of the scanned result of the image of the plural number of pages, prior to the conversion process by the conversion unit for remaining color components.