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AssigneeCanon Kabushiki Kaisha
InventorsHirokazu Tanaka, Tetsuya Edamura, Toshiyuki Chikuma, Takatoshi Nakano, Wakako Yamamoto, Kiichiro Takahashi
Estimating the term…
An ink jet printing apparatus and printing method are provided that can, without the addition of a special structure, suppress density imbalance between the print images formed by ink ejected from each of the ejection ports formed on a print head. As for the plurality of ejection ports, one portion of them are established as multiple impact ejection ports that form multiply impacted pixels at which the number of times ink is impacted at the same area is greater than at other pixels of the print area. And, print control is carried out such that more multiply impacted pixels are printed at print areas printed using ejection ports at the ends of the print head than at print areas printed without using ejection ports at the ends of the print head.
An ink jet printing method for printing an image on a print medium by ejecting ink from a print head, on which a plurality of ejection ports are aligned, based on print permitting ratios which indicate whether or not ejection of ink is permitted, comprising the steps of:
An ink jet printing method for printing an image on a print medium by ejecting ink from a print head having a first ejection port array and a second ejection port array that ejects ink of the same color as the first ejection port array, the ejection port arrays being aligned in a scanning direction, based on print permitting ratios which indicate whether or not ejection of ink is permitted, comprising the steps of:
Dependencies are inferred from the claim text.