1. A push-type pull printing system comprising a server and an image forming apparatus, the server sending, to the image forming apparatus, a print job including print data and a print condition instruction command for the print data, and the image forming apparatus executing a print process based on the print job, the image forming apparatus comprising: an input receiver operable to receive an input of a print condition; a converter operable to convert the inputted print condition, before being transmitted to the server, to an instruction command whose description language is interpretable by the image forming apparatus; and a transmitter operable to transmit the converted instruction command to the server, and the server comprising: a job transmitter operable to receive, from the image forming apparatus, the converted instruction command, and to send, to the image forming apparatus, the print job including therein the received converted instruction command as the print condition instruction command.