Printing defvice, method for controlling printing device, and computer program

Abstract

A printing defvice, a method for controlling printing device, and a computer program. The printing device includes a nozzle row for chromatic ink comprising K nozzles, a nozzle row for achromatic ink comprising (nK) nozzles, and a control portion. In a color region, an image-forming operation is performed m times in which the movement direction of the nozzle rows switches alternately between forward and reverse directions, whereby a region of the image having a predetermined width is foamed along a first direction of an image. The image-forming operation performed m times includes the image-forming operation performed once in which both of the nozzle rows for chromatic ink and for achromatic ink are used, and the image-forming operation performed (m-1) times in which only the nozzle row for chromatic ink is used. In a monochrome region, the image-forming operation is performed once in which only the nozzle row for achromatic ink is used, whereby a region of the image having a predetermined width is formed. Therefore, the print period increase is suppressed and the print quality is enhanced.

Description

technical field [0001] The present invention relates to printing that ejects ink and forms an image on a printing medium. Background technique [0002] In recent years, printing devices that print images by ejecting ink from nozzles provided on the print head to form ink dots on a print medium while performing a main scan that reciprocates the print head have been popularized. In such a printing device, a technology is disclosed that utilizes a nozzle array for achromatic color that ejects achromatic ink (for example, black ink) and a nozzle row that ejects color ink (for example, cyan ink, magenta ink, yellow ink). The color nozzle row forms a chromatic region in a printed image, and the achromatic nozzle row only forms a black-and-white region in a printed image that does not contain a color (for example, refer to Patent Document 1). [0003] Patent Document 1: JP Unexamined Publication No. 2006-231930 [0004] In the prior art described above, there is room for improvem...

AI Technical Summary

Problems solved by technology

[0004] In the prior art described above, there is room for improvement in terms of both the improvement of the print quality and the suppression of the increase in the time required for the print process.

In particular, in the prior art described above, by suppressing the positional deviation along the main scanning direction of the line substantially parallel to the conveyance direction (sub-scanning direction) of the printing medium formed with the achromatic ink, the printing quality brought There is room for improvement in terms of both the improvement of the printing process and the suppression of the increase in the time required for printing processing.

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