To restrain useless delivery of a printing medium while rapidly printing a plurality of pages.

In printing an object page, when the continuous page number Nset of pages following the object page and having the same specification type as the object page is a value 1 or more (S110), standby conveyance processing of placing printing paper on standby in a conveying path is carried out (S140), and when the continuous page number Nset is a value 0 (S110), standby conveyance processing is not carried out (S180). In the former case, printing of a plurality of pages can thereby be speeded up, and in the latter case, the useless delivery of printing paper can be restrained.