Printing end of the printing paper to perform without soiling the platen

摘要

PROBLEM TO BE SOLVED: To perform printing to the end part of a printing paper without allowing ink droplet to impact on a platen.;SOLUTION: A region R delivering ink droplets for forming an image is set across the end of the printing paper P. Individual pixels of the outer upper end part Rfp set across the upper end Pf are recorded only by a nozzle opposing a downstream side channel part of the platen. In addition, the inner upper end part Rfq positioned on the downstream side of the outer upper end part Rfp is recorded only by the nozzle opposing the downstream side channel part. When dots are recorded, and even when the printing paper P is shifted from a position estimated, as far as the upper end of the printing paper P exists within the outer upper end part Rfp or the inner upper end part Rfq, there exists no possibility of making a margin on the end part of the printing paper, and allowing ink droplets to impact on the platen. These outer upper end part Rfp and inner upper end part Rfq are set so as to make the size in the sub-scanning direction to be approximately the same when the size and the material of the printing paper forming the image are the same even when recording density and recording system of the image are different.;COPYRIGHT: (C)2008,JPO&INPIT