When an instruction to transfer a print job, which has been issued from a print data source to Device A, to Device B is made, a transfer request for the job is issued from Device A to Device B (1502). Device B then spools the transfer request in a print queue and issues a job data transmission request for the print job to Device A at a timing at which Device B can execute the transfer request (1503). In response to the transmission request, Device A transmits job data to Device B (1504), and Device B prints the job data (1505). Through this, an unnecessary transfer of job data from a device to another device can be eliminated, and thus throughput during transfer of job data is improved.