Patent ID: 8579401
Filing Date: 2013-11-12
Classification: B41J

Abstract:
1. An inkjet printing system using a print head for ejecting a plurality of pigment inks, a first image improving liquid, and a second image improving liquid being more penetrative into a print medium than the first image improving liquid to print an image on the print medium, comprising: a setting unit configured to set, to each of a color mode for using the plurality of the pigment inks to print on the print medium based on color image data and a monochromatic mode for using the plurality of the pigment inks having the less kind in number than the color mode to print on the print medium based on an achromatic image data, a print duty of each of the first image improving liquid and the second image improving liquid to the print medium, wherein the setting unit sets the print duty of each of the first image improving liquid and the second image improving liquid in such a manner that a ratio of the print duty of the first image improving liquid to the print duty of the second image improving liquid is higher in the monochromatic mode than that in the color mode.