Printing method, printing apparatus, and storage medium having program stored thereon

A printing apparatus, comprising:

• (A) a nozzle movement mechanism that moves a nozzle that ejects ink in a movement direction;
• (B) a transport mechanism that transports a medium in a transport direction that intersects the movement direction;
• and
• (C) a controller that
• controls a movement-and-ejection operation for ejecting ink while moving the nozzle and a transport operation for transporting the medium in the transport direction,
• corrects an ink ejection amount for a certain area based on a correction value for a first type row region, the certain area including a plurality of the first type row regions adjacent to each other in the transport direction, the first type row region being a region in which a dot row is formed in the movement direction by performing a predetermined number of times the movement-and-ejection operation, and
• corrects an ink ejection amount for another area located on the upstream side in the transport direction from the certain area, based on another correction value obtained by reducing a degree of the correction based on the correction value for the first type row region as a distance from the certain area increases, the other area including a plurality of second type row regions and a plurality of the first type row regions in the transport direction, the second type row region being a region in which a dot row is formed in the movement direction by performing the movement-and-ejection operation another predetermined number of times that is more than the predetermined number of times, a ratio of the second type row regions increasing as the distance from the certain area increases.

A storage medium having a program stored thereon, the program comprising:

• (A) code that causes a controller to control a movement-and-ejection operation and a transport operation, the movement-and-ejection operation being for ejecting ink while moving a nozzle in a movement direction, the transport operation being for transporting a medium in a transport direction that intersects the movement direction;
• (B) code that causes the controller to correct an ink ejection amount for a certain area based on a correction value for a first type row region, the certain area including a plurality of the first type row regions adjacent to each other in the transport direction, the first type row region being a region in which a dot row is formed in the movement direction by performing a predetermined number of times the movement-and-ejection operation;
• and
• (C) code that causes the controller to correct an ink ejection amount for another area located on the upstream side in the transport direction from the certain area, based on another correction value obtained by reducing a degree of the correction based on the correction value for the first type row region as a distance from the certain area increases, the other area including a plurality of second type row regions and a plurality of the first type row regions in the transport direction, the second type row region being a region in which a dot row is formed in the movement direction by performing the movement-and-ejection operation another predetermined number of times that is more than the predetermined number of times, a ratio of the second type row regions increasing as the distance from the certain area increases.