Inkjet printing apparatus and printing method using adjustment pattern
AssigneeCanon Kabushiki Kaisha
InventorsYoshinori Nakajima, Keiji Kuriyama, Hidehiko Kanda, Takayuki Ushiyama, Naomi Yamamoto, Takeshi Yazawa, Akihiro Tomida
Life of this patent
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Abstract
A print position adjustment mode is performed with high accuracy while consumption of print media is saved. An inkjet printing apparatus prints an adjustment pattern including multiple patches for adjusting print positions of dots by a print head on a print medium. Patches set next to each other in a scanning direction are printed above platen ribs at intervals based on rib pitches at which the platen ribs are arranged.
Claims24
A printing apparatus comprising:
- a printing device including a plurality of printing elements to form dots on a print medium by applying ink droplets while scanning in a scanning direction;
- a conveyance member configured to convey a print medium in a conveyance direction crossing the scanning direction;
- and
- a plurality of platen ribs configured to be arranged on a conveyance route of a print medium at positions facing the printing device at predetermined pitches in the scanning direction and to support the print medium,
- wherein
- the printing device prints an adjustment pattern on a print medium in response to reception of an instruction to adjust print positions of ink droplets to be applied by the printing device, the adjustment pattern including a plurality of patches and being for use for adjustment, and
- wherein
- the printing device prints the adjustment pattern such that two or more patches are printed next to each other in the scanning direction in a neighboring area around a certain one of the plurality of platen ribs and that no patches are printed in a middle area between the certain platen rib and another platen rib next to the certain platen rib in the scanning direction.
A printing method for a printing apparatus including a printing device, conveying member and a plurality of platen ribs,
- wherein
- the printing device is configured to form dots on a print medium by applying ink droplets while scanning in a scanning direction,
- the conveying member is configured to convey a print medium in a conveyance direction crossing the scanning direction, and
- the plurality of platen ribs is arranged on a conveyance route of a print medium at positions facing the printing unit at predetermined pitches in the scanning direction and configured to support the print medium,
- the printing method comprising:
- receiving step of receiving an instruction to adjust print positions of ink droplets to be applied by the printing unit, and
- printing step of printing an adjustment pattern including a plurality of patches and being for use for the adjustment,
- wherein
- the adjustment pattern are printed such that two or more patches are printed next to each other in the scanning direction in a neighboring area around a certain one of the plurality of platen ribs and that no patches are printed in a middle area between the certain platen rib and another platen rib next to the certain platen rib in the scanning direction.
Dependencies are inferred from the claim text.