An image processing device is structured such that it is possible to
simply and appropriately determine presence/absence of an image for which
overprinting has been designated, or the image. In a print server, when
an overprint warning function is set, detecting and extracting of an
image for which overprinting has been designated are carried out.
Thereafter, when the image for which overprinting has been designated is
detected, warning is given to a client terminal, and image processing and
printing processing for a corresponding image are set so as to clarify
the corresponding image. In this way, the image for which overprinting
has been designated can be correctly determined on a printed matter
outputted from a printer.