An image processing device which carries out processing for composing a
first image (a color patch image for printing simulation) and a second
image (a color patch image for printer management) with image data of a
print job, and printing-out. When image data is received from an image
processing terminal, image data of a first image and a second image are
generated by first and second image generating sections. A first image
composing section composes image data of an object of printing and first
image data. A color correcting section carries out color correction on
the composed image. A second image composing section composes the second
image and an image which has been composed by the first image composing
section and color corrected. In this way, appropriate printing simulation
using an output device such as a printer is possible.