Printing device and printing method
AssigneeSeiko Epson Corporation
InventorYoshiaki Yamamoto
Life of this patent
Estimating the term…
Abstract
A printing device includes a control unit, and the print head including a first nozzle row, a second nozzle row, a third nozzle row, and a fourth nozzle row arrayed along a second direction. A test pattern is printed by a main scan and a sub-scan, and the control unit prints the test pattern so as to include a first line group, a second line group, a third line group, and a fourth line group, and prints the test pattern so that the first line group and the third line group and the second line group and the fourth line group are shifted from each other by a first distance shorter than the nozzle interval in the first direction, and the first line group and the third line group overlap and the second line group and the fourth line group overlap when viewed from the second direction.
Claims6
A printing device, comprising:
- a print head including a first nozzle row, a second nozzle row, a third nozzle row, and a fourth nozzle row which are nozzle rows including a plurality of nozzles configured to eject liquid and arrayed in a first direction at a predetermined nozzle interval, and are arranged along a second direction intersecting the first direction;
- a carriage provided with the print head and configured to reciprocate along the second direction;
- a moving unit configured to perform relative movement between a medium and the print head in the first direction;
- and
- a control unit configured to cause the print head to eject liquid from the plurality of nozzles to the medium to print a test pattern, wherein
- the test pattern is printed by a main scan by the print head ejecting liquid from the plurality of nozzles along with the movement of the carriage along the second direction and a sub-scan that is the relative movement in the first direction,
- the control unit is configured to print the test pattern so as to include a first line group formed by the first nozzle row, a second line group formed by the second nozzle row, a third line group formed by the third nozzle row, and a fourth line group formed by the fourth nozzle row which are line groups including a plurality of lines formed by liquid ejection from each of the plurality of nozzles of the nozzle rows, and
- the control unit is configured to print the test pattern by executing a first pass of the main scan in which the first line group and the third line group are formed and the second line group and the fourth line group are not formed, by executing the sub-scan by a first distance shorter than the nozzle interval subsequent to the executing of the first pass, and by executing a second pass of the main scan in which the second line group and the fourth line group are formed and the first line group and the third line group are not formed such that the first line group and the third line group are shifted from the second line group and the fourth line group in the first direction by the first distance shorter than the nozzle interval, and the first line group and the third line group overlap and the second line group and the fourth line group overlap when viewed from the second direction.
A printing method for printing a test pattern by causing a print head that includes nozzle rows including a plurality of nozzles configured to eject liquid and arrayed in a first direction at a predetermined nozzle interval, to eject liquid from the plurality of nozzles onto a medium,
- the print head including a first nozzle row, a second nozzle row, a third nozzle row, and a fourth nozzle row which are the nozzle rows and arranged along a second direction intersecting the first direction;
- the printing method comprising:
- a printing step of printing the test pattern by a main scan by the print head moving along the second direction and ejecting liquid from the plurality of nozzles and a sub-scan that is relative movement between the medium and the print head in the first direction;
- and
- the printing step including,
- printing the test pattern so as to include a first line group formed by the first nozzle row, a second line group formed by the second nozzle row, a third line group formed by the third nozzle row, and a fourth line group formed by the fourth nozzle row which are line groups including a plurality of lines formed by liquid ejection from each of the plurality of nozzles of the nozzle rows, and
- printing the test pattern by executing a first pass of the main scan in which the first line group and the third line group are formed and the second line group and the fourth line group are not formed, by executing the sub-scan by a first distance shorter than the nozzle interval subsequent to the executing of the first pass, and by executing a second pass of the main scan in which the second line group and the fourth line group are formed and the first line group and the third line group are not formed such that the first line group and the third line group are shifted from the second line group and the fourth line group in the first direction by the first distance shorter than the nozzle interval, and the first line group and the third line group overlap and the second line group and the fourth line group overlap when viewed from the second direction.
Dependencies are inferred from the claim text.