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US 2024/0190127 A1Published application
Printing device and printing method
AssigneeSeiko Epson Corporation
InventorKazuya TOSHIMA
Life of this patent
Estimating the term…
Abstract
A dot to be discharged by a first defective nozzle and a dot to be discharged by a second defective nozzle are determined to be adjacent to each other in a sub-scanning direction, the printing device replaces the position of the dot to be discharged by the first defective nozzle in a main scanning direction with the position of the dot to be discharged by the first normal nozzle in the main scanning direction and then converts the size of a dot adjacent in the sub-scanning direction to the dot to be discharged by the first defective nozzle or the dot to be discharged by the second defective nozzle into a larger size.
Claims5
A printing device comprising:
- a printing head including a nozzle row in which a plurality of nozzles each configured to discharge a dot of liquid to a medium are arranged in a sub-scanning direction, the printing head being configured to discharge the dot while moving in a main scanning direction intersecting the sub-scanning direction;
- a storage unit configured to store information about defective nozzles of the plurality of nozzles forming the nozzle row;
- and
- a control unit configured to control the printing head, wherein
- of raster lines having a length component in the main scanning direction, the raster line formed at the medium using two or more nozzles of the plurality of nozzles, the two or more nozzles including a first defective nozzle that is one of the defective nozzles and a first normal nozzle that is one of normal nozzles, the normal nozzles being included in the plurality of nozzles and not corresponding to the defective nozzles, is defined as a first raster line,
- the raster line formed at the medium using two or more nozzles of the plurality of nozzles, the two or more nozzles including a second defective nozzle that is one of the defective nozzles and a second normal nozzle that is one of the normal nozzles, is defined as a second raster line, and
- when the dot to be discharged by the first defective nozzle and the dot to be discharged by the second defective nozzle are determined to be adjacent to each other in the sub-scanning direction,
- the control unit performs first control of executing either control of replacing a position of the dot to be discharged by the first defective nozzle in the main scanning direction with a position of the dot to be discharged by the first normal nozzle in the main scanning direction and then converting a size of the dot adjacent in the sub-scanning direction to the dot to be discharged by the first defective nozzle or the dot to be discharged by the second defective nozzle into a larger size, or control of replacing a position of the dot to be discharged by the second defective nozzle in the main scanning direction with a position of the dot to be discharged by the second normal nozzle in the main scanning direction and then converting the size of the dot adjacent in the sub-scanning direction to the dot to be discharged by the first defective nozzle or the dot to be discharged by the second defective nozzle into a larger size.
5 more elements
A printing method comprising
- performing printing by controlling a printing head including a nozzle row in which a plurality of nozzles each configured to discharge a dot of liquid to a medium are arranged in a sub-scanning direction, the printing head being configured to discharge the dot while moving in a main scanning direction intersecting the sub-scanning direction, wherein
- of raster lines having a length component in the main scanning direction, the raster line formed at the medium using two or more nozzles of the plurality of nozzles, the two or more nozzles including a first defective nozzle that is one of defective nozzles of the plurality of nozzles forming the nozzle row and a first normal nozzle that is one of normal nozzles, the normal nozzles being included in the plurality of nozzles and not corresponding to the defective nozzles, is defined as a first raster line,
- the raster line formed at the medium using two or more nozzles of the plurality of nozzles, the two or more nozzles including a second defective nozzle that is one of the defective nozzles and a second normal nozzle that is one of the normal nozzles, is defined as a second raster line, and
- in the printing,
- when the dot to be discharged by the first defective nozzle and the dot to be discharged by the second defective nozzle are determined to be adjacent to each other in the sub-scanning direction,
- first control of executing either control of replacing a position of the dot to be discharged by the first defective nozzle in the main scanning direction with a position of the dot to be discharged by the first normal nozzle in the main scanning direction and then converting a size of the dot adjacent in the sub-scanning direction to the dot to be discharged by the first defective nozzle or the dot to be discharged by the second defective nozzle into a larger size, or control of replacing a position of the dot to be discharged by the second defective nozzle in the main scanning direction with a position of the dot to be discharged by the second normal nozzle in the main scanning direction and then converting the size of the dot adjacent in the sub-scanning direction to the dot to be discharged by the first defective nozzle or the dot to be discharged by the second defective nozzle into a larger size is performed.
3 more elements
Dependencies are inferred from the claim text.