Printing apparatus and printing method
AssigneeCanon Kabushiki Kaisha
InventorsKouta Murasawa, Okinori Tsuchiya, Hiromitsu Yamaguchi, Hideki Kubo
Life of this patent
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Abstract
A printing apparatus comprises a decision unit configured to decide a ratio of ink application amounts of the fluorescent ink and the other ink respectively in each of the plurality of scans. The decision unit decides the ratio of the ink application amount of the fluorescent ink in each of the plurality of scans so that the amount of the coloring material of the fluorescent ink in a surface of an ink layer of the printing medium is less than the amount of the coloring material of the fluorescent ink in an inside of the ink layer of the printing medium.
Claims22
A printing apparatus comprising:
- a printing unit configured to print an image by having a nozzle array set in a conveyance direction of a printing medium and reciprocating in a scanning direction that intersects the conveyance direction of the printing medium to apply ink droplets onto the printing medium from nozzles,
- wherein the printing unit has a nozzle array corresponding to a fluorescent ink and a nozzle array corresponding to another ink different to the fluorescent ink;
- a print control unit configured to control a movement of the printing unit and conveyance of the printing medium so as to print an image by a plurality of scans of the printing unit;
- and
- a decision unit configured to decide ink application amount ratios of the fluorescent ink and the other ink respectively in each of the plurality of scans, wherein
- the print control unit, based on the ink application amount ratios decided by the decision unit, performs control of the movement of the printing unit and the conveyance of the printing medium, and
- the decision unit decides the ink application amount ratio of the fluorescent ink in each of the plurality of scans so that the amount of the coloring material of the fluorescent ink in a surface of an ink layer of the printing medium is less than the amount of the coloring material of the fluorescent ink in an inside of the ink layer.
A printing method, comprising:
- printing an image by having a nozzle array set in a conveyance direction of a printing medium and reciprocating in a scanning direction that intersects the conveyance direction of the printing medium to apply ink droplets onto the printing medium from nozzles;
- in order to print an image by a plurality of scans of a printing unit that has a nozzle array corresponding to a fluorescent ink and a nozzle array corresponding to another ink different to the fluorescent ink, controlling a movement of the printing unit and conveyance of the printing medium;
- and
- deciding ink application amount ratios of the fluorescent ink and the other ink respectively in each of the plurality of scans, wherein
- performing the control of the movement of the printing unit and the conveyance of the printing medium based on the decided ink application amount ratios,
- deciding the ink application amount ratio of the fluorescent ink in each of the plurality of scans so that the amount of the coloring material of the fluorescent ink in a surface of an ink layer of the printing medium is less than the amount of the coloring material of the fluorescent ink in an inside of the ink layer.
Dependencies are inferred from the claim text.