To obtain normal output by dividing requested print jobs and efficiently decentralizing and processing them on respective printers only by performing simple decentralized print instructing operation.

A decentralization control part 1304 spools data in specific file format according to a combination of printers for diving and outputting print jobs by as many as the printers. According to the data spooled by the spool means so that the print jobs are divided and outputted for printing on the printers, divided print data are generated and a transmission control part 1306 decentralizes and outputs the data to the respective printers through a network.