Ink jet printing apparatus, ink jet printing method, data generating apparatus, and storage medium

摘要

The present invention provides an inkjet printing apparatus and an inkjet printing method for printing a high-definition image while improving glossiness of the image surface without causing complication and enlargement of the apparatus. A plurality of inks are ejected from first and second printing heads so that a weighted average of a printing rate for each scan regarding an ink having the highest lightness becomes the largest among the plurality of inks and so that a maximum value regarding the printing rate of the ink having the highest lightness becomes larger than those of other inks.

主权项

1. An inkjet printing apparatus for printing an image on a printing area of a printing medium by ejecting inks of a plurality of colors from a plurality of nozzles of a printing head during a plurality of scans of the printing head, the inks of the plurality of colors including a yellow ink, a first ink of a color different from that of the yellow ink, and a second ink having a substantially same hue as the first ink, a colorant concentration lower than that of the first ink, and a lightness higher than that of the yellow ink, the inkjet printing apparatus comprising:
a control unit configured to, in a case where the image is printed by a plurality of scans of the printing head onto the printing area of the printing medium, control the printing head to eject the inks of the plurality of colors so that a weighted average of a printing rate for each scan regarding the second ink becomes the largest, so that a maximum value of the printing rate for each scan regarding the second ink becomes larger than that of the inks of the plurality of colors other than the second ink, and so that a number of scans for ejecting the second ink onto the printing area is smaller than a number of scans for ejecting the inks of the plurality of colors other than the second ink onto the printing area.