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AssigneeCanon Kabushiki Kaisha
InventorsOsamu Iwasaki, Naoji Otsuka, Kiichiro Takahashi, Minoru Teshigawara
Estimating the term…
To reduce the number of simultaneously driven printing elements so that the instantaneously flowing current is restricted in a printing system for completing an image by repeating the printing scan a plurality of times in the same printing area while applying random mask thereto. For this purpose, a mask of a predetermined size is structured as a thinning pattern in which data are arranged randomly, the data being for determining whether or not the respective ink ejection openings in a printing head are to be driven when the printing head repeats the scan a plurality of times in the same printing area of a printing medium. When forming an image, the printing elements concerned with the printing operation in the same printing area are divided into a plurality of sections, and the thinning patterns complementary to each other are applied to the respective sections during the respective printing scans.
A printing apparatus using a printing head on which a plurality of printing elements are arranged, scanning said printing head in a direction different from the arranging direction of said plurality of printing elements relative to a printing medium, and forming an image on the same printing area on said printing medium by a plural times of the scans of said printing head, said apparatus comprising:
A printing method using a printing head on which a plurality of printing elements are arranged, scanning said printing head in a direction different from the arranging direction of said plurality of printing elements relative to a printing medium, and forming an image on the same printing area on said printing medium by a plural times of the scans of said printing head, said method comprising the steps of:
Dependencies are inferred from the claim text.