Patent ID: 6827412
Filing Date: 2004-12-07
Classification: B41J

Abstract:
An ink jet printing apparatus for printing an image on a print medium by using a print head, wherein the print head can eject ink supplied from an ink tank, the ink jet printing apparatus comprising:ink consumption detection means for detecting an amount of ink consumed in the ink tank; ejection number detection means for detecting the number of ink ejections from the print head; ink droplet volume calculation means for calculating an ink droplet volume based on the number of ink ejections from the print head detected by the ejection number detection means and the ink consumption detected by the ink consumption detection means; and control means for changing processing associated with a printing operation according to the ink droplet volume calculated by the ink droplet volume calculation means, wherein the control means changes, based on the ink droplet volume calculated by the ink droplet volume calculation means, image processing parameters used to perform image processing on print data representing an image to be printed, and wherein the image processing parameters are parameters to correct a relation between the ink droplet volume and an output density.