To provide a print system which can add a new print job without changing the schedule of existent print jobs and complete all the print jobs within a limited period.

This system comprises a print schedule table 403a which contains the print schedule, a print time computation part 403b which computes the print time needed to process a new print job, a print time limit computation part 403c which computes the print period wherein the job should be completed, a free time retrieval part 403d which retrieves a free time long enough to complete the job within the print period from the print schedule table, and a print job schedule registration part 403e which registers the job in the retrieved free time.