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AssigneeCanon Kabushiki Kaisha
InventorsTomomi Furuichi, Rie Takekoshi, Daigoro Kanematsu, Naoko Baba, Kazuo Suzuki, Mitsutoshi Nagamura
Estimating the term…
The image quality deterioration due to the collection of dots of low-lightness by the preliminary ejection is prevented, in the case of performing the ink ejection for preliminary ejection during the printing onto printing paper. More specifically, the preliminary ejection pattern is set as a pattern in which the distance between a cyan dot of relatively low-lightness and a magenta dot is longer than a distance between a yellow dot of relatively high-lightness and a cyan dot nearest the yellow dot among low-lightness colors. Closely forming dots of low-lightness that would be perceived as a group of collected dots can be prevented, thereby performing printing that will not deteriorate the printing quality due to the paper preliminary ejection.
An ink jet printing method that uses a printing head for ejecting a plurality of colors of ink on a printing medium to perform printing, in which the plurality of colors of ink are ejected on the printing medium for preliminary ejection in conjunction with ink ejection for the performance of printing, said method comprising:
An ink jet printing apparatus that uses a printing head for ejecting a plurality of colors of ink on a printing medium to perform printing, in which the plurality of colors of ink are ejected on the printing medium for preliminary ejection in conjunction with ink ejection for the performance of printing, said apparatus comprising:
Dependencies are inferred from the claim text.