US Patent 7360857 Ink jet printing apparatus and ink jet printing method

An ink jet printing apparatus is provided which prevents a jam and a head-medium rubbing during a double-sided printing and which can reduce a time required for the printing. The standby time from when the printing on the first print surface of a print medium is completed until the printing on the second print surface starts is set according to the amount of ink applied to a particular area in the first print surface of the print medium. After the set standby time elapses from the completion of the printing on the first print surface, an operation associated with the printing on the second print surface is started.