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US 9,308,741 B2Granted
Printing apparatus and printing method
AssigneeCanon Kabushiki Kaisha
InventorsSatoshi Wada, Yoshitomo Marumoto
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AssigneeCanon Kabushiki Kaisha
InventorsSatoshi Wada, Yoshitomo Marumoto
Estimating the term…
A printing apparatus includes: a print head for applying ink on a print medium; a print control unit configured to control the print head; a conveying unit; an obtaining unit configured to obtain information regarding a conveyance error of conveyance of the print medium in a conveying direction crossing a predetermined direction by the conveying unit with respect to each of a plurality of areas of the print medium that are in positions different from each other in the predetermined direction; and an adjusting unit configured to divide a predetermined area of the print medium in accordance with a conveyance error amount indicated by the information in each of the plurality of areas obtained by the obtaining unit into a plurality of correction areas, and to adjust the amount of ink to be applied onto each of the plurality of correction areas lining up in the predetermined direction.
A printing apparatus comprising:
A printing method in a printing apparatus including a print head for applying ink on a print medium, and a conveying unit configured to convey the print medium in a conveying direction crossing a predetermined direction, the printing method comprising the steps of:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding: alignment of dots
With means for effecting line or character spacing in either direction: with a reciprocating print head printing in both directions across the…
Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in…:…
Typewriters
About 7 years 10 months of term left · ends 15 Aug 2034 (estimated)
1. Field of the Invention
The present invention relates to a printing apparatus and a printing method, and in particular, to a printing apparatus and a printing method that suppress generation of density unevenness caused by an oblique motion of a print medium.
2. Description of the Related Art
FIG. 1 is a schematic top view showing the internal configuration of a printing apparatus;
FIG. 2 is a schematic side view showing the internal configuration of the printing apparatus;
FIG. 3 is a diagram explaining a multi-pass print;
Hereinafter, embodiments of the present invention will be in detail explained with reference to the accompanying drawings.
FIG. 1 is a schematic top view showing the internal configuration of a printing apparatus 20. FIG. 2 is a schematic side view showing the internal configuration of the printing apparatus 20. As shown in these figures, the printing apparatus 20 is provided with a sheet feeder 32, a conveying belt 1009, a carriage 2, measuring devices 701, 702, and the like.
Print mediums 8 are loaded on the sheet feeder 32. A pickup roller 31 is arranged in a position having the print medium 8 between the sheet feeder 32 and the pickup roller 31. The pickup roller 31 is rotated by a supply motor 35 to separate the print mediums 8 loaded on the sheet feeder 32 one by one, and the separated medium 8 is supplied in a conveying/sub scan direction (y direction in the figure). A sheet detector 33 shown in FIG. 1 detects the print medium 8 supplied from the sheet feeder 32.