Patent ID: 7052107
Filing Date: 2006-05-30
Classification: B41J

Abstract:
1. An ink jet printing apparatus to form an image by using a print head capable of ejecting ink from its ejection openings, the printing apparatus comprising: wiping means for wiping an ejection opening formed face of the print head in which the ejection openings are formed; preliminary ejection means for ejecting ink not contributing to an image forming from the ejection openings of the print head; and modifying means for changing, according to event history information of the print head, the number of ink droplets to be ejected by the preliminary ejection means following a wiping operation of the wiping means, wherein the event history information or the print head is a cumulative printed dot number representing a cumulative number of ink droplets ejected from the print head and wherein the modifying means increases the number of ink droplets to be ejected by the preliminary ejection means as the cumulative printed dot number increases.