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US 2011/0084999 A1Published application
Inkjet print apparatus and inkjet print method
AssigneeCanon Kabushiki Kaisha
InventorsMasayuki Kyoshima, Masaki Oikawa, Keiji Tomizawa
Life of this patent
Estimating the term…
Abstract
An objective is to provide an inkjet print apparatus and an inkjet print method capable of a print without concentration unevenness. To achieve the objective, in a multiple-pass print using mask patterns each having low-print-percentage areas and high-print-percentage areas, the print-percentage difference between high-print-percentage areas and low-print-percentage areas is cancelled out in left-edge and right-edge parts of an image to be printed.
Claims5
An inkjet print apparatus comprising:
- a print device that performs a print by ejecting ink;
- a scanning device for causing the print device to scan a same print area a plurality of times;
- a thinning device that thins out binary image data for the same print area by using different mask patterns corresponding to the respective plurality of times of the scans of the same print area;
- and
- a print control device that completes the print on the same print area by printing thinned images on the same print area on the basis of binary image data sets obtained by the thinning device for the respective plurality of times of the scans, wherein
- each of the different mask patterns includes a first area and a second area, the first area having the binary image data thinned out at a relatively high percentage, the second area having the binary image data thinned out at a relatively low percentage, and
- a difference in print percentage between the first area and the second area in each of both edge parts of an image to be printed where the print head scans back is smaller than a difference in print percentage between the first area and the second area in a center part of the image.
4 more elements
An inkjet print method comprising:
- a print step of performing a print by ejecting ink from a print device;
- a scan step of causing the print device to scan a same print area a plurality of times;
- a thinning step of thinning out binary image data for the same print area by using different mask patterns corresponding to the respective plurality of times of the scans of the same print area;
- and
- a print control step of completing the print on the same print area by printing thinned images on the same print area on the basis of binary image data sets obtained by the thinning device for the respective plurality of times of the scans, wherein
- each of the different mask patterns includes a first area and a second area, the first area having the binary image data thinned out at a relatively high percentage, the second area having the binary image data thinned out at a relatively low percentage, and
- a difference in print percentage between the first area and the second area in each of both edge parts of an image to be printed where the print head scans back is smaller than a difference in print percentage between the first area and the second area in a center part of the image.
4 more elements
Dependencies are inferred from the claim text.