Control device and method for printing object image and additional image

A non-transitory computer readable storage medium storing a set of program instructions installed on and executed by a computer for controlling a printer,

• wherein the printer is configured to print a print image by alternatively performing partial printing and sheet conveying plural times, and comprises a conveyer configured to convey a sheet in a first direction in the sheet conveying and a print head having a plurality of nozzles each configured to eject a droplet of ink onto the sheet, the print head configured to print a part of the print image in the partial printing,
• the program instructions comprising:
• acquiring an object image data representing an object image and additional image data representing an additional image added to the object image;
• determining a first position of the object image and a second position of the additional image in an arrangement area including a first area and a second area positioned at positions different from each other in the first direction, the second area being a band-like area extending in a second direction crossing the first direction, the first area being an area where the sheet conveying including a first conveying is performed at least once when an image in the first area is printed, the second area being an area where the sheet conveying including a second conveying different from the first conveying is performed at least once when an image in the second area is printed, and printing an image in the second area taking time longer than that in the first area because of difference of the sheet conveying between in the first area and in the second area, wherein the second position of the additional image is determined such that the additional image has a first length in the first direction within the second area and the first length is minimized, where the first length is greater than or equal to zero;
• generating arrangement image data representing an arrangement image including the object image and the additional image by arranging the object image and the additional image respectively at the first position and the second position that are determined in the determining;
• and
• supplying, to the printer, print image data generated by using the arrangement image data.

A method for controlling a printer,

• wherein the printer is configured to print a print image by alternatively performing partial printing and sheet conveying plural times, and comprises a conveyer configured to convey a sheet in a first direction in the sheet conveying and a print head having a plurality of nozzles each configured to eject a droplet of ink onto the sheet, the print head configured to print a part of the print image in the partial printing,
• the method comprising:
• acquiring an object image data representing an object image and additional image data representing an additional image added to the object image;
• determining a first position of the object image and a second position of the additional image in an arrangement area including a first area and a second area positioned at positions different from each other in the first direction, the second area being a band-like area extending in a second direction crossing the first direction, the first area being an area where the sheet conveying including a first conveying is performed at least once when an image in the first area is printed, the second area being an area where the sheet conveying including a second conveying different from the first conveying is performed at least once when an image in the second area is printed, and printing an image in the second area taking time longer than that in the first area because of difference of the sheet conveying between in the first area and in the second area, wherein the second position of the additional image is determined such that the additional image has a first length in the first direction within the second area and the first length is minimized, where the first length is greater than or equal to zero;
• generating arrangement image data representing an arrangement image including the object image and the additional image by arranging the object image and the additional image respectively at the first position and the second position that are determined in the determining;
• and
• supplying, to the printer, print image data generated by using the arrangement image data.