Patent ID: 7506947
Filing Date: 2009-03-24
Classification: B41J

Abstract:
1. An ink jet printing apparatus which can print an image on a print medium by performing a printing scan for printing the image on the print medium by ejecting ink from a print head having a plurality of ink ejection nozzles arranged in a predetermined direction during a scan of the print head in a direction crossing the predetermined direction, and a feeding operation for feeding the print medium in a direction different from the direction of the printing scan, the ink jet printing apparatus comprising: a platen that supports the print medium to be printed by the print head, wherein the platen is arranged in a position facing the print head and has an opening portion for receiving ink ejected beyond edge portions of the print medium; and a controller that causes the print head to eject the ink by using at least part of nozzles which face the opening portion without using nozzles which do not face the opening portion in all printing scans regardless of the image to be printed, if the print medium on which the image is to be printed is an irregular-shaped print medium.