Patent ID: 8833898
Filing Date: 2014-09-16
Classification: B41J

Abstract:
1. An image forming apparatus in which an operation of reciprocal scans of a print head including a plurality of ejection ports for ejecting dots corresponding to at least two kinds of inks onto a print medium and an operation of conveying the print medium are repeatedly performed and in the meanwhile ink is ejected from the print head to the print medium for printing, where the dots ejected adjacently overlap each other in part, comprising: an input unit configured to input ejection data for ejecting the ink onto the print medium to form an image; a calculating unit configured to calculate an area ratio of each ink on the surface of the print medium based upon the ejection data; and a setting unit configured to set the ejection data based upon the calculated area ratio in such a manner that the area ratio is generally constant in the reciprocal scans.