1. An image processing apparatus for generating image data having a plurality of image conditions from images read out via a scan device and for transmitting the image data to a first print device, the image processing apparatus comprising: a generation unit configured to generate image data items for sample printing based on the images read out via the scan device, the image data items corresponding to a plurality of image conditions; a division unit configured to divide each of the generated image data items for sample printing based on a number of image conditions supported by the first print device and a number of image attributes for sample printing; a selection unit configured to select an image area associated with each of the image attributes from the image data item corresponding to each of the image conditions; a combination unit configured to combine images in the selected image areas on a template having areas divided according to the image condition and the image attribute; and a control unit configured to control a second print device to print the template having the images combined thereon as the image data items for sample printing.