To facilitate per-page setting for data to be printed in an MFP, a PC controlling the MFP includes a print instruction accepting portion to accept data including pages and page setting information having, for each page, a parameter set for a page setting item which can be set per page, an HDD which stores in advance setting information in which a first parameter which can be set for the page setting item is associated with a second parameter which can be set for a subordinate item selected from option items which can be set for printing in the MFP, and a command generating portion to generate, for each page, a command to cause the MFP to perform printing, based on the first parameter set for the page setting item in the accepted page setting information and the second parameter associated with that first parameter by the stored setting information.